residential/commercial generator sets literature/lit/tp6734.pdf · operation manual, spec sheet, or...

Residential/Commercial Generator Sets

Models:

14/20RES

14/20RESL

Controller:

RDC Residential Digital ControlDC Digital Control

Version 2.08 or higher

TP-6734 1/11b

Operation

Engine exhaust from this product contains chemicals

known to the State of California to cause cancer, birth

defects, or other reproductive harm.

WARNING

California Proposition 65

Product Identification Information

Product identification numbers determine service parts.

Record the product identification numbers in the spaces

below immediately after unpacking the products so that

the numbers are readily available for future reference.

Record field-installed kit numbers after installing the

kits.

Generator Set Identification Numbers

Record the product identification numbers from the

generator set nameplate(s).

Model Designation

Specification Number

Serial Number

Accessory Number Accessory Description

Controller Identification

Record the controller description from the generator set

operation manual, spec sheet, or sales invoice.

Controller Description

Engine Identification

Record the product identification information from the

engine nameplate.

Manufacturer

Model Designation

Serial Number

Table of Contents

TP-6734 1/11 Table of Contents

Product Identification Information 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Safety Precautions and Instructions 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Introduction 9. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Service Assistance 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 1 Descriptions and Service Views 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.1 Introduction 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.2 Engine 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.3 Alternator 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.4 Transfer Switch 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.5 Controllers 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.6 Accessories 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.6.1 Carburetor heater 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1.6.2 OnCuet Home Generator Management System 15. . . . . . . . . . . . . . . . . . . .

1.7 Service Views for Maintenance 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 2 Operation 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.1 Prestart Checklist 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.2 Exercising the Generator Set 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.3 RDC and DC Generator Set/ Transfer Switch Controllers 17. . . . . . . . . . . . . . . . . . .

2.4 Controller Power 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.5 Controller Firmware Version 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6 Controls and Indicators 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6.1 Controller Keypad 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6.2 LED Display 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.6.3 LED Indicators 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7 Generator Set Operation 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.1 Local Starting and Stopping 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.2 Engine Start Crank Cycle 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.3 Engine Cooldown 20. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.7.4 Automatic Operation with Model RRT Transfer Switch 20. . . . . . . . . . . . . .

2.7.5 Automatic Operation with Model RDT or RSB Transfer Switches 20. . . . .

2.8 Exercise 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.8.1 Unloaded Variable-Speed Exercise with Complete System Diagnostics 21

2.8.2 System Diagnostics 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.8.3 Loaded Exercise (with RRT only) 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.8.4 Power Failure During Exercise Cycle 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.8.5 Exerciser Reset 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.8.6 Exercise Disable 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.9 Test 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.9.1 Unloaded Test 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.9.2 Loaded Test (with RRT only) 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.9.3 Power Failure During Test Cycle 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.10 Faults 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.10.1 Warnings 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.10.2 Shutdowns 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.10.3 ATS Communication Errors 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.10.4 Resetting the Controller after a Fault Shutdown 26. . . . . . . . . . . . . . . . . . . .

2.10.5 Event History 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.11 Model RRT Transfer Switch Operation 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.11.1 Source Availability 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.11.2 ATS Control Sequence of Operation 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.11.3 Time Delays 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2.11.4 Load Control Time Delay 27. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Table of Contents, continued

TP-6734 1/11Table of Contents

Section 3 Scheduled Maintenance 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1 Scheduled Maintenance 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.1.1 Service Schedule, 14RES/RESL Models 30. . . . . . . . . . . . . . . . . . . . . . . . .

3.1.2 Service Schedule, 20RES/RESL Models 31. . . . . . . . . . . . . . . . . . . . . . . . .

3.2 Lubrication System 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.1 Low Oil Pressure Shutdown 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.2 Oil Check 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.3 Engine Oil Recommendation 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.4 Oil Change Procedure 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.2.5 Oil Cooler 20RES/RESL 33. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.3 Spark Plugs 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4 Air Cleaner Service 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.1 Air Cleaner, 14RES/RESL Models 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.4.2 Air Cleaner, 20RES/RESL Models 35. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.5 Cooling System 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.6 Exhaust System 36. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.7 Battery 37. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.8 Battery Charger 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.8.1 RES Battery Charger 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.9 Circuit Protection 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.9.1 Line Circuit Breaker 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.9.2 Fuses 39. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.10 Storage Procedure 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.10.1 Lubricating System 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.10.2 Fuel System 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.10.3 Cylinder Lubrication 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.10.4 Exterior Preparation 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3.10.5 Battery 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Section 4 Troubleshooting 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.1 Introduction 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.2 Controller Service Access 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.3 Generator Set Troubleshooting 41. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

4.4 Battery Charger Troubleshooting 43. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Appendix A Abbreviations 45. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

TP-6734 1/11 5Safety Precautions and Instructions

Safety Precautions and Instructions

IMPORTANT SAFETY INSTRUCTIONS.

Electromechanical equipment,including generator sets, transferswitches, switchgear, and

accessories, can cause bodily harmand pose life-threatening danger whenimproperly installed, operated, ormaintained. To prevent accidents beaware of potential dangers and actsafely. Read and follow all safety

precautions and instructions. SAVETHESE INSTRUCTIONS.

This manual has several types ofsafety precautions and instructions:Danger, Warning, Caution, and Notice.

DANGER

Danger indicates the presence of ahazard that will cause severepersonal injury, death, orsubstantial property damage.

WARNING

Warning indicates the presence of ahazard that can cause severepersonal injury, death, orsubstantial property damage.

CAUTION

Caution indicates the presence of ahazard that will or can cause minorpersonal injury or property damage.

NOTICE

Notice communicates installation,operation, or maintenance informationthat is safety related but not hazardrelated.

Safety decals affixed to the equipment

in prominent places alert the operatoror service technician to potentialhazards and explain how to act safely.The decals are shown throughout thispublication to improve operatorrecognition. Replace missing or

damaged decals.

Accidental Starting

Accidental starting.Can cause severe injury or death.

Disconnect the battery cables beforeworking on the generator set.

Remove the negative (--) lead firstwhen disconnecting the battery.Reconnect the negative (--) lead lastwhen reconnecting the battery.

WARNING

Disabling the generator set.Accidental starting can causesevere injury or death. Beforeworking on the generator set orconnected equipment, disable the

generator set as follows: (1) Move thegenerator set master switch to theOFFposition. (2) Disconnect the power tothe battery charger. (3) Remove thebattery cables, negative (--) lead first.Reconnect the negative (--) lead last

when reconnecting the battery. Followthese precautions to prevent starting ofthe generator set by an automatictransfer switch, remote start/stopswitch, or engine start command fromaremote computer.

Battery

Sulfuric acid in batteries.Can cause severe injury or death.

Wear protective goggles andclothing. Battery acid may cause

blindness and burn skin.

WARNING

Explosion.Can cause severe injury or death.Relays in the battery chargercause arcs or sparks.

Locate the battery in awell-ventilatedarea. Isolate thebattery charger fromexplosive fumes.

WARNING

Battery electrolyte is a dilutedsulfuric acid. Battery acid cancausesevere injuryordeath. Battery

acid can cause blindness and burnskin. Always wear splashproof safetygoggles, rubber gloves, and bootswhen servicing the battery. Do notopen a sealed battery or mutilate thebattery case. If battery acid splashes in

the eyes or on the skin, immediatelyflush the affected area for 15 minuteswith large quantities of clean water.Seek immediate medical aid in thecase of eye contact. Never add acid to

a battery after placing the battery inservice, as this may result inhazardous spattering of battery acid.

Battery acid cleanup. Battery acidcan cause severe injury or death.Battery acid is electrically conductive

and corrosive. Add 500 g (1 lb.) ofbicarbonate of soda (baking soda) to acontainer with 4 L (1 gal.) of water andmix the neutralizing solution. Pour theneutralizing solution on the spilledbattery acid and continue to add the

neutralizing solution to the spilledbattery acid until all evidence of achemical reaction (foaming) hasceased. Flush the resulting liquid withwater and dry the area.

TP-6734 1/116 Safety Precautions and Instructions

Battery gases. Explosion can causesevere injury or death. Battery gasescan cause an explosion. Do not smokeor permit flames or sparks to occur

near a battery at any time, particularlywhen it is charging. Do not dispose of abattery in a fire. To prevent burns andsparks that could cause an explosion,avoid touching the battery terminalswith tools or other metal objects.

Remove all jewelry before servicingthe equipment. Discharge staticelectricity from your body beforetouching batteries by first touching agrounded metal surface away from thebattery. To avoid sparks, do not disturb

the battery charger connections whilethe battery is charging. Always turn thebattery charger off beforedisconnecting the battery connections.Ventilate the compartments containingbatteries to prevent accumulation of

explosive gases.

Battery short circuits. Explosioncan cause severe injury or death.Short circuits can cause bodily injuryand/or equipment damage.Disconnect the battery before

generator set installation ormaintenance. Remove all jewelrybefore servicing the equipment. Usetools with insulated handles. Removethe negative (--) lead first when

disconnecting the battery. Reconnectthe negative (--) lead last whenreconnecting the battery. Neverconnect the negative (--) battery cableto the positive (+) connection terminalof the starter solenoid. Do not test the

battery condition by shorting theterminals together.

Engine Backfire/FlashFire

Fire.Can cause severe injury or death.

Do not smoke or permit flames orsparks near fuels or the fuel system.

WARNING

Servicing the air cleaner. A suddenbackfire can cause severe injury ordeath. Do not operate the generatorset with the air cleaner removed.

Servicing the fuel system. A flashfire can cause severe injury ordeath. Do not smoke or permit flamesor sparks near the carburetor, fuel line,fuel filter, fuel pump, or other potentialsources of spilled fuels or fuel vapors.

Catch fuels in an approved containerwhen removing the fuel line orcarburetor.

Combustible materials. A fire cancause severe injury or death.

Generator set engine fuels and fuelvapors are flammable and explosive.Handle these materials carefully tominimize the risk of fire or explosion.Equip the compartment or nearby areawith a fully charged fire extinguisher.

Select a fire extinguisher rated ABC orBC for electrical fires or asrecommended by the local fire code oran authorized agency. Train allpersonnel on fire extinguisheroperation and fire prevention

procedures.

Exhaust System

Carbon monoxide.Can cause severe nausea,fainting, or death.

The exhaust system must be

leakproof and routinely inspected.

WARNING

Generator set operation. Carbon

monoxide can cause severe

nausea, fainting, or death. Carbon

monoxide is an odorless, colorless,

tasteless, nonirritating gas that can

cause death if inhaled for even a short

time. Avoid breathing exhaust fumes

when working on or near the generator

set. Never operate the generator set

inside a building. Never operate the

generator set where exhaust gas could

seep inside or be drawn into a

potentially occupied building through

windows, air intake vents, or other

openings.

Carbon monoxide detectors.Carbonmonoxide can cause severenausea, fainting, or death. Installcarbon monoxide detectors on each

level of any building adjacent to thegenerator set. Locate the detectors toadequately warn the building’soccupants of the presence of carbonmonoxide. Keep the detectorsoperational at all times. Periodically

test and replace the carbon monoxidedetectors according to themanufacturer’s instructions.

Carbon monoxide symptoms.Carbonmonoxide can cause severe

nausea, fainting, or death. Carbonmonoxide is a poisonous gas presentin exhaust gases. Carbon monoxide isan odorless, colorless, tasteless,nonirritating gas that can cause death ifinhaled for even a short time. Carbon

monoxide poisoning symptomsinclude but are not limited to thefollowing:

� Light-headedness, dizziness� Physical fatigue, weakness in

joints and muscles

� Sleepiness, mental fatigue,inability to concentrateor speak clearly, blurred vision

� Stomachache, vomiting, nauseaIf experiencing any of these symptomsand carbon monoxide poisoning is

possible, seek fresh air immediatelyand remain active. Do not sit, lie down,or fall asleep. Alert others to thepossibility of carbon monoxidepoisoning. Seek medical attention ifthe condition of affected persons does

not improvewithinminutes of breathingfresh air.

TP-6734 1/11 7Safety Precautions and Instructions

Fuel System

Explosive fuel vapors.Can cause severe injury or death.

Use extreme care when handling,storing, and using fuels.

WARNING

The fuel system. Explosive fuelvapors can cause severe injury ordeath. Vaporized fuels are highlyexplosive. Use extreme care whenhandling and storing fuels. Store fuels

in a well-ventilated area away fromspark-producing equipment and out ofthe reach of children. Never add fuel tothe tank while the engine is runningbecause spilled fuel may ignite oncontact with hot parts or from sparks.

Do not smoke or permit flames orsparks to occur near sources of spilledfuel or fuel vapors. Keep the fuel linesand connections tight and in goodcondition. Do not replace flexible fuellines with rigid lines. Use flexible

sections to avoid fuel line breakagecaused by vibration. Do not operatethe generator set in the presence offuel leaks, fuel accumulation, orsparks. Repair fuel systems before

resuming generator set operation.

Gas fuel leaks. Explosive fuelvapors can cause severe injury ordeath. Fuel leakage can cause anexplosion. Check the LP vapor gas ornatural gas fuel system for leakage by

using a soap and water solution withthe fuel system test pressurized to6--8 ounces per square inch(10--14 inches water column). Do notuse a soap solution containing eitherammonia or chlorine because both

prevent bubble formation. Asuccessful test depends on the abilityof the solution to bubble.

Hazardous Noise

Hazardous noise.

Can cause hearing loss.

Never operate the generator set

without a muffler or with a faulty

exhaust system.

CAUTION

Engine noise. Hazardous noise cancause hearing loss. Generator setsnot equipped with sound enclosurescan produce noise levels greater than105 dBA. Prolonged exposure to

noise levels greater than 85 dBA cancause permanent hearing loss. Wearhearing protection when near anoperating generator set.

Hazardous Voltage/Moving Parts

Hazardous voltage.Can cause severe injury or death.

Operate the generator set only whenall guards and electrical enclosures

are in place.

Moving parts.

WARNING

Hazardous voltage.

Backfeed to the utility system can

cause property damage, severe

injury, or death.

If the generator set is used for

standby power, install an automatic

transfer switch to prevent inadvertent

interconnection of standby and

normal sources of supply.

WARNING

Welding the generator set.Can cause severe electricalequipment damage.

Never weld components of the

generator set without firstdisconnecting the battery, controllerwiring harness, and engineelectronic control module (ECM).

CAUTION

Grounding electrical equipment.Hazardous voltage can causesevere injury or death. Electrocutionis possible whenever electricity ispresent. Ensure you comply with all

applicable codes and standards.Electrically ground the generator set,transfer switch, and related equipmentand electrical circuits. Turn off themain circuit breakers of all power

sources before servicing theequipment. Never contact electricalleads or appliances when standing inwater or on wet ground because theseconditions increase the risk ofelectrocution.

Welding on the generator set. Cancause severe electrical equipmentdamage. Before welding on thegenerator set perform the followingsteps: (1) Remove the battery cables,negative (--) lead first. (2) Disconnect

all engine electronic control module(ECM) connectors. (3) Disconnect allgenerator set controller and voltageregulator circuit board connectors.(4) Disconnect the engine battery-charging alternator connections.

(5) Attach the weld ground connectionclose to the weld location.

Connecting the battery and thebattery charger. Hazardous voltagecan cause severe injury or death.Reconnect the battery correctly,

positive to positive and negative tonegative, to avoid electrical shock anddamage to the battery charger andbattery(ies). Have a qualifiedelectrician install the battery(ies).

TP-6734 1/118 Safety Precautions and Instructions

Short circuits. Hazardousvoltage/current can cause severeinjury or death. Short circuits cancause bodily injury and/or equipment

damage. Do not contact electricalconnections with tools or jewelry whilemaking adjustments or repairs.Remove all jewelry before servicingthe equipment.

Electrical backfeed to the utility.

Hazardous backfeed voltage cancause severe injury or death. Installa transfer switch in standby powerinstallations to prevent the connectionof standby and other sources of power.

Electrical backfeed into a utilityelectrical system can cause severeinjury or death to utility personnelworking on power lines.

Heavy Equipment

Unbalanced weight.

Improper lifting can cause severe

injury or death and equipment

damage.

Do not use lifting eyes.

Lift the generator set using lifting bars

inserted through the lifting holes on

the skid.

WARNING

Hot Parts

Hot engine and exhaust system.Can cause severe injury or death.

Do not work on the generator set untilit cools.

WARNING

Servicing the exhaust system. Hotparts can cause severe injury ordeath. Do not touch hot engine parts.The engine and exhaust systemcomponents become extremely hot

during operation.

Servicing the engine heater. Hotparts can cause minor personalinjuryorpropertydamage. Install theheater before connecting it to power.

Operating the heater beforeinstallation can cause burns andcomponent damage. Disconnectpower to the heater and allow it to coolbefore servicing the heater or nearbyparts.

Notice

NOTICE

Canadian installations only. Forstandby service connect the output ofthe generator set to a suitably ratedtransfer switch in accordance withCanadian Electrical Code, Part 1.

TP-6734 1/11 9Introduction

Introduction

This manual provides operation and maintenance

instructions for residential/commercial model

14/20RES and RESL generator sets equipped with

Residential Digital Control (RDC) or Digital Control (DC)

generator set/transfer switch controllers. The RDC and

DC controllers control the generator set and the optional

Model RRT transfer switch. See Figure 1.

This generator set is approved for use in stationary

applications in locations served by a reliable utility

power source. Have the generator set installed by an

authorized distributor/dealer or service technician.

Refer to TP-6733, Installation Manual, for installation

instructions.

Information in this publication represents data available

at the time of print. Kohler Co. reserves the right to

change this publication and the products represented

without notice and without any obligation or liability

whatsoever.

Read this manual and carefully follow all procedures

and safety precautions to ensure proper equipment

operation and to avoid bodily injury. Read and follow the

Safety Precautions and Instructions section at the

beginning of this manual. Keep this manual with the

equipment for future reference.

The equipment service requirements are very important

to safe and efficient operation. Inspect the parts often

and perform required service at the prescribed intervals.

Obtain service from an authorized service distributor/

dealer to keep equipment in top condition.

TP-6734

Figure 1 RES/RESL Generator Set and Optional

Model RRT Transfer Switch

List of Related Literature

Figure 2 identifies related literature available for the

generator sets covered in this manual. Only trained and

qualified personnel should install or service the

generator set.

Literature Type Part Number

14/20RES/RESL Generator Set

Installation Manual TP-6733

14/20RES/RESL Generator Set

Service Manual TP-6735

Figure 2 Related Literature

Nameplate

The following illustration shows a typical generator set

nameplate. Copy the model, serial, and specification

numbers from the nameplate into the spaces provided in

the product information section on the inside front cover

of this manual. See Section 1.7 for the nameplate

location.

GM12070

TP-6734 1/1110 Introduction

Emission Information

The Kohler� Model CH740 engine used on the

14RES/RESL generator set is certified to operate using

natural gas or propane fuel.

The Kohler Model CH1000 engine used on the

20RES/RESL generator set is certified to operate using

propane fuel. The CH1000 engine used on the

20RES/RESL may be operated on natural gas fuel

because it is excluded from the requirements of

40 CFR 1048 as a stationary engine.

The engine used in the Model 20RES/RESL generator

set is certified for emergency standby use only.

The Emission Compliance Period referred to on the

EmissionControl or Air Index label indicates the number

of operating hours for which the engine has been shown

to meet CARB or EPA emission requirements. Figure 3

provides the engine compliance period (in hours)

associated with the category descriptor, which may be

found on the certification label.

Emission Compliance Period

EPACategory C250 hours

Category B500 hours

Category A1000 hours

CARBModerate125 hours

Intermediate250 hours

Extended500 hours

Figure 3 Emission Compliance Period

Refer to the certification label for engine displacement.

The exhaust emission control system for the CH740

engines (14RES/RESL) is EM for U.S. EPA, California,

and Europe.

The exhaust emission control system for the CH1000

engine (20RES/RESL) is EM for U.S. EPA, California,

and Europe.

TP-6734 1/11 11Service Assistance

Service Assistance

For professional advice on generator set power

requirements and conscientious service, please contact

your nearest Kohler distributor or dealer.

� Consult the Yellow Pages under the heading

Generators—Electric.

� Visit the Kohler Power Systems website at

KohlerPower.com.

� Look at the labels and stickers on your Kohler product

or review the appropriate literature or documents

included with the product.

� Call toll free in the US and Canada 1-800-544-2444.

� Outside the US andCanada, call the nearest regional

office.

Headquarters Europe, Middle East, Africa

(EMEA)

Kohler Power Systems

3 rue de Brennus

93200 Saint Denis

France

Phone: (33) 1 49 178300

Fax: (33) 1 49 178301

Asia Pacific

Power Systems Asia Pacific Regional Office

Singapore, Republic of Singapore

Phone: (65) 6264-6422

Fax: (65) 6264-6455

China

North China Regional Office, Beijing

Phone: (86) 10 6518 7950

(86) 10 6518 7951

(86) 10 6518 7952

Fax: (86) 10 6518 7955

East China Regional Office, Shanghai

Phone: (86) 21 6288 0500

Fax: (86) 21 6288 0550

India, Bangladesh, Sri Lanka

India Regional Office

Bangalore, India

Phone: (91) 80 3366208

(91) 80 3366231

Fax: (91) 80 3315972

Japan, Korea

North Asia Regional Office

Tokyo, Japan

Phone: (813) 3440-4515

Fax: (813) 3440-2727

Latin America

Latin America Regional Office

Lakeland, Florida, USA

Phone: (863) 619-7568

Fax: (863) 701-7131

TP-6734 1/1112 Service Assistance

Notes

TP-6734 1/11 13Section 1 Descriptions and Service Views

Section 1 Descriptions and Service Views

1.1 Introduction

The generator set specification sheets provide specific

generator and engine information. Refer to the spec

sheet for data not supplied in this manual. Consult the

generator set servicemanual, engine operationmanual,

and engine service manual for additional specifications.

Obtain copies of the latest spec sheets, manuals,

diagrams, and drawings from your local distributor/

dealer.

1.2 Engine

The generator set has a four-cycle, twin cylinder, air-

cooled Kohler� engine. The engine operates on clean-

burning natural gas or propane (LP) vapor. Engine

features include:

� Efficient overhead valve design and full pressure

lubrication for maximum power, torque, and reliability

under all operating conditions.

� Dependable, maintenance-free electronic ignition.

� Precision-formulated cast iron construction of parts

subjected to the most wear and tear.

� Field-convertible multi-fuel systems that allow fuel

changeover from natural gas to LP vapor (and vice-

versa) while maintaining CARB emission

certification.

� Digital spark advance optimizes ignition timing for the

selected fuel.

1.3 Alternator

The generator uses Kohler’s unique PowerBoost�

voltage regulation system, which provides instant

response to load changes.

PowerBoost� ensures reliable motor starting and

consistent voltage levels. PowerBoost� utilizes a

voltage excitation system that employs a winding

independent of the main output windings to provide

excitation voltage.

1.4 Transfer Switch

The RDC and DC controllers are designed to interface

with and control the Kohler Model RRT Automatic

Transfer Switch (ATS).

If the power systemuses a transfer switch other than the

Kohler� Model RRT ATS, the RDC controller functions

as a generator set controller only. An ATS other than the

Model RRT must provide engine start contacts that

connect to the remote engine start leads on the

generator set.

1.5 Controllers

RDC (RES) DC (RESL)

Figure 1-1 Controllers

RES models are equipped with the Residential Digital

Control (RDC). RESL models use the Digital Control

(DC). See Figure 1-1.

TP-6734 1/1114 Section 1 Descriptions and Service Views

Controller Features

� Integrated control for the generator set and Kohler�

Model RRT transfer switch

� Automatic start with programmed cranking cycle

� Digital isochronous governor to maintain

steady-state speed at all loads

� Digital voltage regulation: ±1.5% RMS no-load to

full-load

� Smart engine cooldown senses engine temperature

� Master switch pushbuttons (Off, Auto, Run,

Exercise/down arrow)

� Off, Auto, and Run LED indicators

� LED display:

� Crank cycle status

� Setup information (RDC only)

� Firmware version

� Faults

� Event history

� Scrolling system status display when generator set is

running includes:

� Engine runtime hours

� Battery voltage

� Generator voltage

� Engine temperature

� Utility voltage*

� Membrane keypad for configuration and adjustment

(RDC only)

� Password-protected access to system

configuration and adjustment menus

� System voltage/frequency selection and engine

configuration

� Voltage, gain, and engine speed adjustment

� Selectable exercise and test modes:

� Weekly unloaded variable-speed exercise with

complete system diagnostics

� Weekly loaded full-speed exercise *

� Unloaded full-speed test

� Loaded full-speed test *

� Faults displayed:

� ATS communication error

� Auxiliary fault

� High battery voltage

� High engine temperature

� Internal faults

� Locked rotor

� Loss of AC sensing

� Low battery voltage

� Low cranking battery voltage

� Low oil pressure

� Overcrank

� Overfrequency

� Overspeed

� Overvoltage

� Speed sensor fault

� Underfrequency

� Underspeed

� Undervoltage

� Front-access mini USB connector for controller

firmware upgrade �

� Front access fuses and mini-breaker

� Remote two-wire start/stop capability for optional

connection of Model RDT or RSB transfer switches

� Load control output allows delayed start of large

motor loads *

� Generator output voltage and frequency sensing with

adjustable voltage pickup and dropout settings �

� Engine start and load transfer time delays*

(adjustable using Kohler� SiteTech� software �)

� Provides utility voltage sensing data and transfer

signals with the Model RRT transfer switch *

* Model RRT transfer switch required

� Requires Kohler� SiteTech� software, available only to Kohler authorized distributors and dealers

TP-6734 1/11 15Section 1 Descriptions and Service Views

1.6 Accessories

The following optional accessories are offered for the

RES and RESL generator sets.

1.6.1 Carburetor heater

An optional carburetor heater is recommended for

improved cold starting in locations where the ambient

temperature drops below 0�C (32�F). The carburetor

heater prevents condensation and carburetor icing. The

heater requires a continuous source of 120 VACpower.

See the generator set Installation manual for more

information.

1.6.2 OnCue� Home Generator

Management System

The Kohler� OnCue� Home Generator Management

System allows monitoring and control of your RES or

RESL generator set from a personal computer located

in your home or at other remote locations. OnCue� can

also be configured to send email or text message

notifications in the event of a generator set fault.

Note: Be sure to obtain the correct version of the

OnCue� kit for the RDC/DC controller.

OnCue� version 3.0 with the Ethernet option board is

required for RES/RESL generator sets equipped with

the RDC/DC controller. Earlier versions of the OnCue�

kit are not compatible with the RDC/DC controller.

TP-6734 1/1116 Section 1 Descriptions and Service Views

1.7 Service Views for Maintenance

25 12REAR VIEW

23

18

19

24

17

14

AIR INTAKE SIDE --PANELREMOVED TO SHOW DETAIL

1

23

10

4

9

11

ADV-7876

8

5

13

1. Muffler (located below cover plate)

2. Oil check dipstick3. Air cleaner

4. Oil filter

5. RDC or DC controller6. Fuses

7. USB connector (for firmware updates)

8. Line circuit breaker

9. Oil fill10. Oil drain valve

11. Exhaust outlet

12. Air intake13. Lifting holes

14. Field-connection terminal block location

15. Digital spark advance ignition (DSAI) leads16. Fuel solenoid valve

17. Oil drain hose

18. Engine starting battery location (battery purchased separately)19. Battery cables

20. Battery charger location (charger not shown)

21. 120 VAC receptacles for battery charger and optional carburetor

heater (not shown)22. Nameplate location

23. Gas regulator assembly

24. Fuel block or LP orifice location (inside hose fitting)25. Fuel inlet

12

FRONT VIEW

TOP VIEW -- ROOFREMOVED TO SHOW DETAIL

6, 7

15, 16

22

20, 21

10

Figure 1-2 Generator Set Components

TP-6734 1/11 17Section 2 Operation

Section 2 Operation

2.1 Prestart Checklist

To ensure continued satisfactory operation, perform the

following checks or inspections before or at each

startup, as designated, and at the intervals specified in

the service schedule. In addition, some checks require

verification after the unit starts.

Air Cleaner. Check for a clean and installed air cleaner

element to prevent unfiltered air from entering the

engine.

Air Inlets. Check for clean and unobstructed air inlets.

Battery. Check for tight battery connections. Consult

the battery manufacturer’s instructions regarding

battery care and maintenance.

Exhaust System. Check for exhaust leaks and

blockages. Check the muffler condition.

� Inspect the exhaust system components for cracks,

leaks, and corrosion. Check for tight exhaust system

connections.

� Check for corroded or brokenmetal parts and replace

them as needed.

� Check that the exhaust outlet is unobstructed.

Oil Level. Check the oil level before starting the

generator set and at the intervals given in Section 3,

Scheduled Maintenance. Maintain the oil level at or

near, not over, the full mark on the dipstick.

Operating Area. Check for obstructions that could

block the flow of cooling air. Keep the air intake area

clean. Do not leave rags, tools, or debris on or near the

generator set.

2.2 Exercising the Generator Set

Operate the generator set without load once each week

for 20minutes. Perform all of the prestart checks before

starting the exercise procedure. See Section 2.8 for

instructions to set the exerciser.

2.3 RDC and DC Generator Set/

Transfer Switch Controllers

Model RES generator sets are equipped with the

Residential Digital Control (RDC). Model RESL

generator sets are equipped with the Digital Control

(DC).

The RDC and DC control the power system generator

set and Model RRT automatic transfer switch (ATS) (if

equipped). The controller receives voltage sensing data

from theModel RRTATSand operates the generator set

and transfer switch to provide standby power when

utility power is lost.

2.4 Controller Power

The RDC and DC controllers are powered by the

generator set engine starting battery.

Note: The generator sets are equipped with factory-

installed battery chargers to prevent battery

discharge. The battery charger must be

connected to utility power.

2.5 Controller Firmware Version

The information in this manual applies to RDC and DC

controllers with firmware version number 2.08 or higher.

To check the firmware version number:

RDC controllers: Press and hold the Select button and

the up arrow button simultaneously for about 5 seconds,

until the firmware version number appears on the

controller display.

DC controllers: The firmware version number is

displayed during the first 2 seconds of the engine crank

cycle.

TP-6734 1/1118 Section 2 Operation

2.6 Controls and Indicators

Figure 2-1 illustrates the RDC and DC controller user

interfaces.

1. LED display

2. Up button (RDC only)3. Select button (RDC only)

4. Down/Exercise button (RDC)

5. Exercise button (DC)

6. Service access (see Section 4.2)

7. RUN button and LED8. AUTO button and LED

9. OFF button and LED

1

9

3

2

7

8

6

4

1

9

7

8

6

5

Residential Digital Controller (RDC) Digital Controller (DC)

Figure 2-1 RDC and DC Controls and Indicators

2.6.1 Controller Keypad

TheRun,Off, Auto, andDown arrowor Exercise buttons

control the generator set as described in Figure 2-2.

See Section 2.7 for operation instructions.

RDC controller only: The Select, Up, and Down

buttons on the controller keypad are used to adjust the

controller parameters. The system configuration and

performance is factory-set and should not require

changes under normal operating conditions. To prevent

inadvertent changes, a pass code is required to access

the controller parameter settings. Contact an

authorized distributor/dealer or service technician if

adjustments are required.

Button Button Function

RUN Starts the generator set. The engine starttime delay is ignored.

OFF Shuts down the generator set. Thecooldown time delay is ignored.

During the engine crank cycle, pressingOFF will stop the crank cycle.

Press and hold for 3 seconds to view eventhistory. See Section 2.10.5.

AUTO Places the generator set in Auto mode.See Figure 2-5.

DOWNarrow(RDC) orEXERCISE(DC)

Starts an unloaded exercise.

Press during test or exercise to changefrom unloaded to loaded (with RRT only).

Select RDC only. Used to change parametersettings. Password-protected. Contactyour distributor/dealer if necessary.UP arrow

Figure 2-2 Pushbutton Operation


2.6.2 LED Display

Figure 2-3 lists status messages that may be shown on

the controller’s LED display.

When the system is in AUTOand the generator set is not

running, the LED display shows the engine run time

hours. During cranking, the display showsCC1, CC2, or

CC3.

When the generator is running, the display steps

through the status messages shown in Figure 2-4, as

applicable. The generator set must be connected to a

Model RRT transfer switch for the utility voltage display.

When a fault or warning condition exists, the controller

will show the corresponding message. See Section

2.10 for more information on fault and warning codes.

Display Description

Blank (dark) Controller is off.

u#.# Controller software version number

XXX.X Engine hours to 999.9

XXXX Engine hours, 1000 to 9999

bXX.X Battery voltage

tXX.X Engine temperature

UXXX * Utility voltage

EXXX Generator voltage

tnLd * Test, no load

t Ld * Test, loaded

EnLd Exercise, no load

E Ld * Exercise, loaded

CC1, 2, or 3 Engine crank cycle 1, 2, or 3. Flashesduring crank pause.

Fault code Warning or fault. See Figure 2-8.

* Model RRT ATS is required for this display.

Figure 2-3 RDC Controller Display

� Generator set is running.

� Model RRT transfer switch is required for utility voltage

display.

� Display steps through the parameters in sequence for

2 seconds each.

tp6734

Engine RuntimeXXX.X or XXXX hours

Utility VoltageUXXX VAC

Engine TemperaturetXXX

Battery VoltagebXX.X VDC

Generator VoltageEXXX VAC

Test or exercise mode,if applicable.

tnLd, t LD, EnLd, or E Ld

Figure 2-4 Data Displays, Generator Running

2.6.3 LED Indicators

LEDs above the RUN, OFF, and AUTO buttons indicate

the mode of operation as shown in Figure 2-5.

Mode LED Indication Description

RUN RUN LED is on The generator set was started by pressing the RUN button. Generator set isrunning. Remote start and stop commands are ignored.

OFF OFF LED lights for 2seconds, then flashesevery 2 seconds.

The OFF button was pressed. Generator set and controller are off. Remotestart/stop commands have no effect. The exercise cycle will not run.

AUTO AUTO LED is on Automatic mode. Generator set will respond to engine start and stop commandsfrom the controller (for example, exercise start and stop commands) or an ATS.Time delays operate as described in Section 2.7.

Figure 2-5 Operation Modes and LED Indicators


2.7 Generator Set Operation

2.7.1 Local Starting and Stopping

Start

Press theRUNbutton to immediately start the generator

set. The engine start time delay will be ignored.

The controller attempts to start the generator set three

times. See Section 2.7.2, Engine Start Crank Cycle.

Stop

1. Run the generator set with no load for at least

2 minutes to ensure adequate engine cooldown.

2. Press the OFF button. The engine stops.

Also see Section 2.9, Test.

2.7.2 Engine Start Crank Cycle

The controller attempts to start the generator set three

times (three crank cycles, 15 seconds crank and

15 seconds off). See Figure 2-3 for display information

during the crank cycle. If the generator set does not start

in three attempts, the system shuts down on an

overcrank fault. See Section 2.10.

Pressing the OFF button during the crank cycle stops

the cranking. No other buttons are acknowledged

during the crank cycle.

2.7.3 Engine Cooldown

The engine cooldown time delay allows the engine to

run after the loads have been removed. COOL is

displayed on the controller during engine cooldown.

The engine cooldown time delay is set to 5 minutes. The

engine stops before the cooldown time delay expires if

the temperature drops below the cooled-down

temperature level, or if the temperature rises during the

cooldown cycle.

If a transfer switch other than theModel RRT is used, an

engine cooldown time delaymay be programmed on the

transfer switch. To allow the smart engine cooldown on

the RDC/DC controller to operate most efficiently, set

the cooldown time on the ATS controller to zero or the

minimum time allowed. Refer to the instructions

provided with the ATS for more information.

2.7.4 Automatic Operation with Model

RRT Transfer Switch

TheModel RRT transfer switch connects to theRDC/DC

controller through the ATS interface board on the

transfer switch. Also see Section 2.11, Model RRT

Transfer Switch Operation.

The controller must be in AUTOmode. Press the AUTO

button to put the controller into automatic mode.

Automatic Start

The RDC/DC controller receives utility source voltage

sensing data from the Model RRT transfer switch.

1. If the utility source voltage falls below an

acceptable level, the controller starts the engine

start time delay.

2. If the utility source is not restored before the time

delay expires, the generator set starts.

3. After the Normal-to-Emergency time delay, the

ATS is signaled to transfer the load to the

emergency source.

Automatic Stop with Engine Cooldown

1. When the utility source is restored, the

Emergency-to-Normal time delay starts.

2. When the Emergency-to-Normal time delay

expires, the load is transferred to the utility.

3. The generator set runs through the engine

cooldown cycle and then stops.

2.7.5 Automatic Operation with Model

RDT or RSB Transfer Switches

If a Kohler Model RDT or RSB transfer switch is used,

the engine start contacts from the ATS must be

connected to engine start leads 3 and 4 on the generator

set.

The controller must be in AUTO mode to respond to

remote start/stop signals from an ATS or remote switch.

Press the AUTO button to put the controller into

automatic mode.

Automatic Start

The engine start contacts on the ATS close to signal the

generator set to start, and remain closed while the

generator set is running.


Automatic Stop

Open the contact across engine start leads 3 and 4 to

signal the generator set to stop.

2.8 Exercise

TheRDC andDC controllers can be set to automatically

run the generator set at the same time and day each

week. Exercising the generator set weekly is required in

order to keep the engine and alternator in good

operating condition.

Follow the instructions in this section to start a 20-minute

exercise run and set the exerciser to run at the same

time every 7 days.

Note: RDC/DCcontrollerswith firmware version 2.08 or

higher support the unloaded variable-speed

exercise with Kohler Model RRT, RDT, and RSB

transfer switches.

Note: With the RDT and RSB transfer switches, it is

possible to have two exercise settings (one

unloaded exercise set at the generator set

controller, and another exercise set at the ATS

controller). If the exercise times overlap, the ATS

exercise setting takes priority.

Set the exercise at the RDC/DC controller or the ATS

controller as shown in Figure 2-6. If a Model RDT or

RSB transfer switch is used, refer to the instructions

providedwith the transfer switch to set an exercise at the

ATS, if desired.

Transfer

Switch

Model

Exercise

Unloaded

Variable

Speed

Unloaded

Full Speed

Loaded Full

Speed

RRT RDC/DC N/A RDC/DC

RDT RDC/DC ATS ATS

RSB RDC/DC ATS ATS

Figure 2-6 Setting the Exerciser

2.8.1 Unloaded Variable-Speed

Exercise with Complete System

Diagnostics

An unloaded exercise runs the generator set without

signalling the transfer switch to transfer the electrical

load from the utility source to the generator set. The

unloaded variable speed exercise runs at low speed for

15 minutes, then ramps up to full speed during the last 5

minutes.

The initial low-speed exercise allows generator set

operation at lower noise levels and fuel consumption

while properly warming up the engine for longer life and

better lubrication of critical components.

The full-speed portion of the exercise cycle provides the

best test of engine and alternator power backup

capability. Diagnostic tests at full speed can identify

potential problems with the power output and alert the

operator before an emergency event.

Procedure to Set Unloaded Variable-Speed

Exercise

1. Verify that the control is in the AUTOmode with the

AUTO LED ON and the Utility power available.

2. Press the down arrow button (RDC) or exercise

button (DC) to initiate the engine start signal.

3. The generator begins its crank cycles. During the

crank cycles CCn appears on the display. No

button presses are acknowledged during the crank

cycles.

4. The generator runs at low speed for 15 minutes.

EnLd appears on the display. The AUTO LED is

illuminated. The controller monitors the system

during the unloaded exercise as described in the

Section 2.8.2, System Diagnostics.

5. During the last 5 minutes, the engine ramps up to

full speed and then shuts down. Generator output

frequency and voltage diagnostics are active as

described in the Section 2.8.2, System

Diagnostics.

The exercise time is set to the time the down arrow or

exercise button is pressed. An unloaded

variable-speed exercise will occur at the same time

every seven days.

2.8.2 System Diagnostics

During the unloaded variable-speed exercise, the

controller monitors the following data. The controller

display indicates an unloaded exercise run (EnLd)

during the diagnostics, unless a fault is detected as

described below.

� ATS connection. The controller verifies that the

Model RRT ATS interface board, if connected,

remains connected. An ATS fault is displayed if the

connection is lost.

� Battery voltage. Battery voltage is checked before

exercise to verify engine starting capability. Battery

voltage provides a measurement of battery health. If

the controller detects low battery voltage, Lb (low

battery) or LCb (low charging battery) is displayed

and the exercise does not start.


� Engine speed. Engine speed is measured at low

speed and full speed. An overspeed (OS) or

underspeed (US) condition will result in a fault

condition and shutdown.

� Generator output frequency and voltage.

Operating the generator at full speed allows the

RDC/DC controller to check the output power for

correct voltage, frequency, and stability. When the

engine is running at full speed, the controller verifies

that the voltage and frequency are within acceptable

limits. UU (undervoltage), OU (overvoltage), UF

(underfrequency), orOF (overfrequency) is displayed

if the voltage or frequency is out of range.

� Oil pressure. Oil pressure is verified to ensure

proper lubrication of critical engine components.

Pressure is monitored at both low and full speeds. If

the oil pressure is low, LOP (low oil pressure) is

displayed and the generator set shuts down.

2.8.3 Loaded Exercise (with RRT only)

A loaded exercise starts the generator set, ramps up to

full speed, and then transfers the electrical load from the

utility source to the generator set. The load is

transferred back to the utility source before the

generator set shuts down.

Procedure to Set a Loaded Exercise

1. Verify that the control is in the AUTOmode with the

AUTO LED ON and the Utility power available.

2. Press the down arrow button (RDC) or the exercise

button (DC) to initiate the engine start signal.

3. The generator begins its crank cycles. During the

crank cycles CCn appears on the display. No

button presses are acknowledged during the crank

cycles.

4. When the generator is running, EnLd appears on

the display and the AUTO LED is illuminated. The

generator runs at low speed with no load.

5. Press the down arrow button (RDC) or exercise

button (DC) a second time. The generator ramps

up to normal operating speed (typically 3600 RPM)

and the ATS transfers the load.

6. E Ld appears on the display and the AUTO LED is

illuminated. The generator runs at normal

operating speed for twenty minutes with load.

7. After 20minutes, the ATS transfers the load back to

utility power. The engine runs for 5 minutes or until

cool, and then shuts down.

The exercise time is set to the time the down arrow

button (RDC) or exercise button (DC) was initially

pressed. A loaded, full-speed exercise will occur at the

same time every seven days.

Other transfer switches: For a loaded exercise with a

transfer switch other than a Kohler�Model RRT, refer to

the transfer switch operation manual.

2.8.4 Power Failure During Exercise

Cycle

If the utility power is lost during an unloaded exercise,

theATS transfers to the emergency source, the exercise

is ended and the control remains in the AUTO mode.

If the utility power is lost during a loaded exercise, the

exercise is ended. The ATS remains in the emergency

position and the control goes into the AUTO mode.

The generator set continues to run and supply power to

the load for the duration of the utility power outage.

WhenUtility power is restored, the ATSwill re-transfer to

the utility source through normal timing sequences.

2.8.5 Exerciser Reset

To reset the exerciser to run at a different day and/or

time, or to switch between a loaded and unloaded

exercise, follow the procedures above to start an

unloaded or loaded exercise on the desired time and

day. The previous exercise setting is replaced by the

new time, day, and loaded or unloaded condition.

2.8.6 Exercise Disable

Note: With the RDT and RSB transfer switches, it is

possible to have two exercise settings (one set at

the generator set controller, and one set at the

ATS controller). If the exercise times overlap, the

ATS exercise setting takes priority.

If a transfer switch other than theModel RRT is used and

the exerciser is set at the transfer switch controller, you

can disable the exercise on the RDC/DC controller.

To disable the exerciser on the RDC/DC controller,

press and hold the OFF and DOWN arrow or

EXERCISE buttons together for 3 seconds.


2.9 Test

An operator can use the buttons on the RDC/DC

controller to test the generator set operation. Follow the

instructions below to manually start and stop an

unloaded or loaded full-speed test.

2.9.1 Unloaded Test

An unloaded test runs the generator set at full speed

without signalling the transfer switch to transfer the

electrical load from the utility source to the generator set.

Procedure to Run an Unloaded Full-Speed Test

1. Press the RUN button to start an unloaded test.

The engine cranks and starts.

2. When the generator is running, tnLd appears on

the display and the RUN LED is illuminated. The

engine runs at normal operating speed (3600

RPM) during the test sequence.

3. There are two ways to end an unloaded test.

Perform a or b:

a. Press the AUTObutton to enter AUTOmode. If

utility is available, the generator set shuts down

through normal timing sequences.

b. Press the OFF button to shut down the

generator set. The cooldown time delay is

ignored.

Also see Section 2.7.1, Local Starting and Stopping.

Figure 2-7 describes the effect of pressing the buttons

during a test, with the engine running and no active

faults.

Button

Press Response

RUN Press RUN to start the test. Pressing againwhen the engine is running has no effect .

AUTO Puts the generator set into AUTO mode.Shuts down the engine through normaltiming sequences if utility is available.AUTO LED turns ON. RUN LED turns OFF.

OFF Ends the test and shuts down the generatorset. The cooldown time delay is ignored.The RUN LED turns OFF. The OFF LEDturns ON and then flashes every 2seconds.

DOWNarrow/EXERCISE

Press during the test to signal the ModelRRT ATS to transfer to the emergencysource. The display indicates a LoadedTest, t Ld.

Figure 2-7 Button Functions During Test

2.9.2 Loaded Test (with RRT only)

A loaded test starts the generator set and then signals

the Model RRT transfer switch to transfer the electrical

load from the utility source to the generator set. The load

is transferred back to the utility source before the

generator set shuts down.

Note: If a Model RDT or RSB transfer switch is used, a

loaded test cannot be initiated from the RDC or

DC controller. To run a loaded test, refer to the

instructions provided with the transfer switch.

Procedure to Run a Loaded Full-Speed Test

1. Press the RUN button to start an unloaded test as

described in Section 2.9.1. When the generator is

running, tnLd appears on the display.

2. Press the down arrow button (RDC) or the exercise

button (DC) to signal the ATS to transfer the load.

The display indicates a loaded test, t Ld.

3. To end the test, press the AUTO button to shut

down the generator set through normal timing

sequences. The generator set goes into Auto

mode. The load is transferred to utility power, if

available. The engine cooldown cycle runs before

the generator set engine stops.

Immediate Shutdown During a Loaded Test

Press the OFF button to shut the generator set down

immediately, if necessary. The cooldown time delay is

ignored, and the controller goes to OFF mode. The

controller signals the RRT transfer switch to transfer the

load back to utility power.

Note: Running the generator set with no load for at least

2 minutes is recommended to ensure adequate

engine cooldown. Use the OFF button to stop a

loaded test only if necessary.

2.9.3 Power Failure During Test Cycle

If the utility power is lost during an unloaded test, the

controller goes into the AUTO mode and the ATS

transfers to the emergency source.

If the utility power is lost during a loaded test, the

controller goes into the AUTO mode. The ATS remains

in the emergency position.

The generator set continues to run and supply power to

the load for the duration of the Utility power outage.

When Utility power is restored, the ATS re-transfers to

the utility source through normal timing sequences.


2.10 Faults

Fault conditions are shown in Figure 2-8. Fault

conditions are classified as warnings or shutdowns.

2.10.1 Warnings

The controller displays a fault code but the generator set

does not shut down on a warning. The controller resets

automatically after a warning condition is corrected.

2.10.2 Shutdowns

Under a fault shutdown condition, the generator set

shuts down automatically and the controller displays a

fault code. In some cases, the engine cooldown cycle

runs before the engine shuts down. See Figure 2-8.

Shutdown switches (such as the low oil pressure switch

or high engine temperature switch) on the generator set

will automatically reset when the problem is corrected.

However, the fault condition at the controller does not

clear until the controller is reset.

The generator set cannot be restarted until the fault

condition is corrected and the controller is reset. See

Section 2.10.4 to reset the controller after a fault

shutdown.

2.10.3 ATS Communication Errors

An ATS fault can be caused by two conditions.

� When a Model RRT transfer switch is used, an ATS

fault indicates that the connection to the interface

board on the transfer switch has been lost. The

generator set shuts down. Check the connection to

the ATS interface board.

� If an RRT transfer switch is connected after the

controller has powered up, the ATS warning is

displayed. To clear the fault, disconnect and then

reconnect battery power to the controller.

Code Fault

Warning (W) or

Shutdown (SD) Condition Check

AC Loss of ACsensing

W (1 sec.)

SD (3 sec.) *

Generator output AC sensing is lost.Starts 10 seconds after crankdisconnect.

Warning: after 1 second if no outputdetected after crank disconnect.

Shutdown: after 3 seconds if voltagewas present and then lost.

Contact an authorizeddistributor/dealer for service.

AF Auxiliary faultinput

SD * An optional customer-connected input isclosed.

Check customer-supplied equipment.

ATS ATScommunicationerror

SD * Shutdown if ATS interface connection islost. See Section 2.10.3.

Check connection to Model RRTtransfer switch interface board.

W Warning is displayed if RRT interfaceboard is connected after controller ispowered up. See Section 2.10.3.

Disconnect and then reconnectbattery power to controller.

Hb High batteryvoltage

W Engine starting battery voltage risesabove 125% of the battery voltagesetting for more than 10 seconds whenthe engine is running. Not operativeduring the engine crank cycle.

Clears when the battery voltage returnsto an acceptable level.

Check the battery rating andcondition.

Check the battery charger operation.

HE High enginetemperature

SD * Engine coolant temperature exceeds themaximum temperature for more than5 seconds. Function becomes activeafter crank disconnect.

Check for blocked air inlets andexhaust outlets.

Lb Low batteryvoltage

W Engine starting battery voltage fallsbelow the battery voltage setting(typically 12 volts) for more than 90seconds when the engine is not running.Not operative during the engine crankcycle.

Clears when the battery voltage returnsto an acceptable level.

Check the battery rating andcondition.

Check the battery charger operation.

Charge or replace the battery.

* Engine cooldown runs before shutting down.


Code Fault

Warning (W) or

Shutdown (SD) Condition Check

LCb Low crankingvoltage

W Battery voltage falls below 60% ofsystem battery voltage for more than 6seconds while the starter is engaged.

Charge or replace the battery.

LOP Low oilpressure

SD * The LOP switch indicates low oilpressure for more than 5 seconds.Function becomes active 30 secondsafter crank disconnect (30 secondinhibit).

Note: The low oil pressure shutdowndoes not protect against low oil level.Check the engine oil level regularly asrecommended in Section 3.

Check for leaks in the lubricationsystem.

Check the oil level and add oil if thelevel is low.

Lr Locked rotor SD No engine rotation is sensed duringcranking. Shuts down 3 seconds afterthe fault is detected.

Check the fuel supply, spark plug,and battery.

Check for loose connections.


LrC Loss of voltageregulatorcommunication

SD * No communication between controllerand voltage regulator.


OC Overcrank SD Three unsuccessful starting attempts. Check the fuel supply, spark plug,and battery.

Check for loose connections.


OF Overfrequency SD * Governed frequency exceeds 110% ofthe system’s frequency setpoint for morethan 5 seconds. Function becomesactive 10 seconds after engine start(10 second inhibit).


OS Overspeed SD * Engine speed exceeds 115% of thenormal running speed for more than0.3 seconds.


OU Overvoltage SD * Output voltage exceeds 120% of thesystem nominal voltage for more than2 seconds.


SS Speed sensorfailure

SD Engine speed sensor has failed. Contact an authorizeddistributor/dealer for service.

UF Underfrequency SD * Governed frequency falls below 90% ofthe system frequency setting for morethan 5 seconds, or 1 Hz below thesystem frequency setting for more than60 seconds.

Function becomes active 10 secondsafter engine start (10 second inhibit).

Reduce the load and restart thegenerator set.


US Underspeed SD * Engine speed drops below 85% of thenormal running speed for more than0.3 seconds.

Reduce the load.


UU Undervoltage SD * Output voltage falls below 80% of thenominal system voltage for more than10 seconds.

Reduce the load and restart thegenerator set.


* Engine cooldown runs before shutting down.

Figure 2-8 Controller Fault Codes


2.10.4 Resetting the Controller after a

Fault Shutdown

Always identify and correct the cause of a fault

shutdown before resetting the controller. Check the

fault code displayed on the controller and refer to

Figure 2-8 to identify and correct the fault condition

before proceeding. Contact an authorized

distributor/dealer for service, if necessary.

Procedure to Reset the Controller after a Fault

Shutdown

1. Press OFF to turn off the generator set.

2. Disconnect the generator set from the load using

the line circuit breaker or ATS. See the safety

precautions at the beginning of this manual before

proceeding.

3. Identify and correct the cause of the fault

shutdown. See the safety precautions at the

beginning of this manual before proceeding. Refer

to Section 4, Troubleshooting.

4. Start the generator set by pressing RUN. Check

the generator set operation to verify that the cause

of the shutdown has been corrected.

5. Press the OFF button to stop the generator set.

6. Reconnect the generator set to the load using the

line circuit breaker or ATS.

7. Press AUTO to put the generator set into automatic

mode.

2.10.5 Event History

The last ten controller faults can be viewed from the

controller display when the controller is off. Each event

is displayed with the fault code followed by the engine

hours at which time the event occurred. During event

history viewing, the OFF LED flashes once per second.

NIA (not in Auto) will be listed in the event history, but is

not displayed on the controller when active.

Procedure to View Event History

1. Press and hold the OFF button for 3 seconds. The

first event appears on the screen. The OFF LED

flashes once per second.

2. Press the OFF button to cycle through the engine

hours and subsequent events. After cycling

through all ten events, the control automatically

turns off. The OFF LED flashes once every 2

seconds.

To stop viewing the event history before the last event,

press the down arrow or exercise button. The controller

will turn off.


2.11 Model RRT Transfer Switch

Operation

The RDC/DC generator set/transfer switch controller

manages automatic transfer switch (ATS) functions

when connected to aKohler�ModelRRT transfer switch

through the ATS interface board.

2.11.1 Source Availability

The Model RRT transfer switch supplies voltage

sensing data to the RDC/DC controller through the ATS

interface board. If the source voltage falls below the

undervoltage dropout setting, the source is considered

to have failed. See Figure 2-9.

Item Setting

Accuracy ±5%

Undervoltage Dropout 90% of Pickup

Undervoltage Pickup 90% of Nominal

Figure 2-9 Voltage Sensing Parameters

2.11.2 ATS Control Sequence of

Operation

See Figure 2-10 for time delay settings.

Preferred Source Fails:

1. The load control contact opens.

2. The engine start time delay times out.

3. The generator set is signaled to start.

4. The generator starts and the emergency source

becomes available.

5. The normal-to-emergency time delay times out.

6. The transfer switch transfers to the emergency

source.

7. The load control contact time delay times out.

8. The load control contact closes.

Normal Source Returns:

1. The emergency-to-normal time delay times out.

2. The contactor transfers to the normal source.

3. The engine cooldown time delay times out.

4. The generator is signaled to stop.

2.11.3 Time Delays

Time delays are factory-set to the values shown in

Figure 2-10. An authorized distributor/dealer can adjust

time delays using a personal computer and Kohler�

SiteTech� software.

Time delays described in this section operate only when

the controller is connected to a Kohler� Model RRT

transfer switch.

The engine start and load transfer time delays prevent

engine start and load transfer caused by brief variations

in the utility power source.

2.11.4 Load Control Time Delay

The load control time delay allows delayed starting of

large motor loads (such as air conditioners), preventing

simultaneous starting of large motors after transfer to

the generator set. The load control time delay is fixed at

5 minutes. It is not adjustable.

The load must be connected to the load control output

on the interface board of the Model RRT transfer switch.

See the transfer switch operation and installation

manual for connection instructions.

Time Delay Setting Description

Engine Start 3 seconds Time delay after utility source is lost until the engine start cyclebegins. Guards against starting the generator set because of a briefchange in the utility source.

Transfer, Normal to Emergency 3 seconds Time delay after emergency source becomes available until transferto emergency source.

Transfer, Emergency to Normal 2 minutes Time delay after the utility source returns until transfer back to normal.Ensures that the the utility source is stable before transferring fromthe emergency source.

Load Control 5 minutes Allows delayed connection of selected loads to the generator set.Prevents simultaneous starting of large motors after transfer to theemergency source. Recommended for delayed starting of airconditioners.

Figure 2-10 Time Delays


Notes

TP-6734 1/11 29Section 3 Scheduled Maintenance

Section 3 Scheduled Maintenance

Accidental starting.Can cause severe injury or death.

Disconnect the battery cables beforeworking on the generator set.

Remove the negative (--) lead firstwhen disconnecting the battery.Reconnect the negative (--) lead lastwhen reconnecting the battery.

WARNING

Disabling the generator set. Accidental starting cancause severe injury or death. Before working on thegenerator set or connected equipment, disable the generatorset as follows: (1) Move thegenerator setmaster switch to theOFF position. (2) Disconnect the power to the battery

charger. (3) Remove the battery cables, negative (--) leadfirst. Reconnect the negative (--) lead last when reconnectingthebattery. Follow these precautions to prevent starting of thegenerator set by an automatic transfer switch, remotestart/stop switch, or engine start command from a remote

computer.

Hazardous voltage.Can cause severe injury or death.

Operate the generator set only whenall guards and electrical enclosures

are in place.

Moving parts.

WARNING

Hot engine and exhaust system.Can cause severe injury or death.

Do not work on the generator set untilit cools.

WARNING

Servicing the exhaust system. Hot parts can causesevere injury or death. Do not touch hot engine parts. Theengine and exhaust system components become extremelyhot during operation.

3.1 Scheduled Maintenance

Refer to the following service schedules and the runtime

hours displayed on the controller display to schedule

routine maintenance. Intervals are shown in hours of

operation and/or time intervals (i.e. weekly, monthly,

quarterly, etc.) Have an authorized distributor/dealer

service the generator set at the designated intervals in

the service schedule for the life of the generator set.

Service units subject to extremeweather, long operating

hours, or dusty or dirty conditions more frequently.

Contact an authorized distributor/dealer for parts.

TP-6734 1/1130 Section 3 Scheduled Maintenance

3.1.1 Service Schedule, 14RES/RESL Models

System Component or ProcedureSee

Section

Procedure

Frequency

VisuallyInspect Check Change Clean Test

Fuel

Flexible lines and connections X R Quarterly

Main tank supply level X Weekly

Fuel piping X Yearly

Lubrication 3.2

Oil levelX X

8 hours orbefore use

Crankcase breather hose X Yearly or 500 hours

Change oil X Yearly or 100 hours

Replace filter X Yearly or 200 hours

Cooling 3.5

Air ducts, louvers X X Yearly

Exhaust Line 3.6

Leakage X X Weekly

Insulation, fire hazards X Yearly

Obstructions or combustible materials near exhaustoutlet

X Weekly

DC Electrical System 3.7

Battery charger operation, charge rate (if equipped) X Monthly

Remove corrosion, clean and dry battery and rack X X Yearly

Clean and tighten battery terminals and inspectboots

X X Yearly

Battery electrolyte level and specific gravity * X Yearly

AC Electrical System

Tighten control and power wiring connections X Yearly

Remote control system, if equipped X Monthly

Visible wear or damage X Quarterly

Wire abrasions where subject to motion X X Six Months

Wire-cable insulation condition X 3 Years or 500 hours

Engine and Mounting

Visible wear or damage X Weekly

Air cleaner and precleaner service � 3.4 R Yearly or 100 hours

Spark plugs 3.3 X Yearly or 300 hours

Replace stepper motor coupling and bushing D 500 hours

Generator


Exercise generator set X Weekly

Brushes and collector ring D D Yearly

Measure and record resistance readings ofwindings with insulation tester (Megger�, withSCR assembly or rectifier and load leadsdisconnected) *

D 3 Years

General Condition of Equipment

Evidence of vibration, leakage, excessive noise,temperature, or deterioration

X X X Weekly

Interior of sound enclosure X X Quarterly

* Not necessary for maintenance-free batteries.

� Service more frequently under extremely dusty/dirty conditions.

Megger� is a registered trademark of Biddle Instruments.

X Action

D Authorized distributor/dealer onlyR Replace as necessary


3.1.2 Service Schedule, 20RES/RESL Models

System Component or ProcedureSee

Section

Procedure

Frequency

VisuallyInspect Check Change Clean Test

Fuel

Flexible lines and connections X R Quarterly

Main tank supply level X Weekly

Fuel piping X Yearly

Lubrication 3.2

Oil level X 8 hours orbefore each use

Change oil X Yearly or 150 hours

Replace filter X Yearly or 150 hours

Crankcase breather hose X Yearly or 500 hours

Oil cooler X X Yearly or 100 hours

Cooling 3.5

Air ducts, louvers X X Yearly

Exhaust System 3.6

Leakage X X Weekly

Insulation, fire hazards X Yearly

Obstructions or combustible materials nearexhaust outlet

XWeekly

DC Electrical System 3.7

Battery charger operation, charge rate X Monthly

Remove corrosion, clean and dry battery andrack

X XYearly

Clean and tighten battery terminals and inspectboots

X XYearly

Battery electrolyte level and specific gravity * X Yearly

AC Electrical System

Tighten control and power wiring connections X Yearly

Remote control system, if equipped X Monthly


Wire abrasions where subject to motion X X Six Months

Wire-cable insulation condition X 3 Years or 500 hours

Engine and Mounting

Visible wear or damage X Weekly

Air cleaner service � 3.4 150 300 Yearly or hours shown

Spark plugs 3.3 150 300 Yearly or hours shown

Replace stepper motor coupling and bushing D 500 hours

Generator


Exercise generator set W Weekly

Brushes and collector ring D D Yearly

Measure and record resistance readings ofwindings with insulation tester (Megger�, withSCR assembly or rectifier and load leadsdisconnected)

D 3 Years

General Condition of Equipment

Evidence of vibration, leakage, deterioration,unusual or excessive noise or temperature

X X X Weekly

Interior of sound enclosure X X Quarterly

* Not necessary for maintenance-free batteries.

� Service more frequently under extremely dusty/dirty conditions.

Megger� is a registered trademark of Biddle Instruments.

X Action

D Authorized distributor/dealer onlyR Replace as necessary

TP-6734 1/1132 Section 3 Scheduled Maintenance

3.2 Lubrication System

See the service schedules in Section 3.1 for oil change

and oil filter replacement intervals. See the service

views in Section 1.7 for the oil drain, oil check, oil fill, and

oil filter locations.

3.2.1 Low Oil Pressure Shutdown

The low oil pressure (LOP) shutdown feature protects

the engine against internal damage if the oil pressure

drops below a minimum pressure because of oil pump

failure or other malfunction.

Note: The LOP shutdown feature does not protect

against damage caused by operating when the

oil level is low; it is not a low oil level shutdown.

Check the oil level regularly, and add oil as

needed.

3.2.2 Oil Check

The generator set is shipped with oil. Before operating

the generator set, check the engine oil in the crankcase.

See Figure 3-1.

Maintain the oil level at or near, not over, the full mark on

the dipstick. Add 5W-30 synthetic oil when the oil level is

low.

Check the oil level before each use. For extended

operation, check the oil level every 8 hours. Do not

check the oil level when the generator set is running.

Shut down the generator set and wait several minutes

before checking the oil.

6515

Figure 3-1 Oil Check (typical)

3.2.3 Engine Oil Recommendation

Use 5W-30 API (American Petroleum Institute) Service

Class SG, SH, or SJ synthetic oil. Synthetic oil oxidizes

and thickens less than other oils and leaves the engine

intake valves and pistons cleaner.

3.2.4 Oil Change Procedure

Note: Dispose of all waste materials (engine oil, fuel,

filter, etc.) in an environmentally safe manner.

Drain the oil while it is still warm.

1. Drain the oil.

a. Press the OFF button on the generator set

controller.

b. Disconnect the power to the battery charger.

c. Disconnect the generator set engine starting

battery, negative (--) lead first.

d. Remove the housing side panel.

e. Clean the area around the dipstick and oil fill

cap.

f. Remove the oil drain hose from its retaining

clip. Remove the cap from the oil drain hose

and lower the hose into an oil collection

container.

g. Open the oil drain valve on the engine.

h. Remove the dipstick and oil fill cap. Allow time

for the engine oil to drain completely.

i. Close the oil drain valve. Replace the cap on

the oil drain hose. Replace the oil drain hose in

its retaining clip.

j. Replace the dipstick.

2. Replace the oil filter.

a. Clean the area around the oil filter. Remove the

oil filter by rotating it counterclockwise with an

oil filter wrench.

b. Clean the gasket sealing surface of the oil filter

adapter.

c. Apply a light coat of clean oil to the rubber seal

of the new oil filter.

d. Install the new oil filter following the instructions

provided with the filter.


3. Fill with oil.

a. Fill the engine to theFmarkon thedipstick. The

engine oil capacity is shown in Figure 3-2. See

Section 3.2.3, Engine Oil Recommendation,

for oil selection.

Generator Set Model Oil Capacity, L (qt.)

14RES/RESL 1.9 (2.0)

20RES/RESL 2.8 (3.0)

Figure 3-2 Engine Oil Capacity

b. Reinstall the

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