installation/service manual dubnoff (2876 ... - fisher sci
TRANSCRIPT
Installation/Service ManualDubnoff (2876/2877) & Shallow Form (2874/2875)
Shaking Water Baths
401 Millcreek Road, Box 649Marietta, Ohio 45750USAPhone: 740-373-4763Toll Free: 800-438-4851FAX: 740-373-4189
Manual P/N 3177891Rev. G Dated 26MAY09
Hig h Te mp.
Off
On
NOTICE
THE MATERIAL IN THIS MANUAL IS FOR INFORMATION PURPOSES ONLY. THE CONTENTSAND THE PRODUCT IT DESCRIBES ARE SUBJECT TO CHANGE WITHOUT NOTICE. THERMOSCIENTIFIC MAKES NO REPRESENTATIONS OR WARRANTIES WITH RESPECT TO THISMANUAL. IN NO EVENT SHALL THERMO BE LIABLE FOR ANY DAMAGES, DIRECT ORINCIDENTAL, ARISING OUT OF OR RELATED TO THE USE OF THIS MANUAL.
For repair information or replacement parts assistance from the manufacturer, call Technical Services using our toll-free telephone number.
800-438-4851(FAX) 740-373-4189
NOTE:
THE UNITS DESCRIBED IN THIS MANUAL WERE DESIGNED SPECIFICALLY FOR THEEUROPEAN MARKET AND ARE SUPPLIED WITH A EUROPEAN STYLE POWER CORD. FORDOMESTIC USE, A U.S. STYLE POWER CORD (P/N: 3176836) MUST BE ORDEREDSEPARATELY.
INDEX DATE NOTES
REVISION STATUS
Initial releaseA
AMENDED PAGES
6/99
B
C
D
E
F
G
NOV01
JUL05
JUN06
SEP08
APR09
MAY09
Add caution "acidic & causticsubstance ....."
new manual #, manufacture location
consolidated with 3177690 240V,removed CE symbol and declaration
Revised water specifications
Added UL required info
Pg 25 probe-half coupler
7
36100126 (34002554)
ECR 23443, 23496, 23196
ECR24808
ECR25448/BA-670
ECR25227/BA-667
ContentsINTRODUCTION ....................................................................................................................... 1
UNPACKING AND DAMAGE ................................................................................................... 1
GENERAL INFORMATION ...................................................................................................... 2
PERFORMANCE ...................................................................................................................... 2
INSTALLATION ........................................................................................................................ 3
WATER LEVEL REGULATOR ................................................................................................. 4
EXPLANATION OF CONTROLS ............................................................................................. 6
OPERATION ............................................................................................................................. 7
MAINTENANCE ........................................................................................................................ 8
TROUBLESHOOTING .............................................................................................................. 9
PARTS REPLACEMENT ........................................................................................................ 14
TEMPERATURE CALIBRATION ........................................................................................... 17
REPLACEMENT PARTS LIST ............................................................................................... 18
ASSEMBLY & SCHEMATIC DWGS ...................................................................................... 20
WARRANTY ........................................................................................................................... 29
1
INTRODUCTION
Your satisfaction and safety are important toThermo and a complete understanding of this unitis necessary to attain these objectives.
As the user of this apparatus, you have theresponsibility to understand the proper functionand operational characteristics of your bath. Thisinstruction manual should be thoroughly read andall operators given adequate training beforeattempting to place this unit in service. Awarenessof the stated cautions and warnings, andcompliance with recommended operatingparameters — together with maintenancerequirements — are important for safe andsatisfactory operation. The unit should be used asdescribed and for its intended application;alterations or modifications will VOID THEWARRANTY.
WARNINGAS A ROUTINE LABORATORY PRECAUTION,ALWAYS WEAR SAFETY GLASSES WHENWORKING WITH THIS APPARATUS.
This product is not intended, nor can it be used,as a sterile or patient connected device. Inaddition, this apparatus is not designed for usein Class I, II or III locations as defined by theNational Electrical Code.
UNPACKING AND DAMAGESave all packing material until unit is put intoservice. This merchandise was carefully packedand thoroughly inspected before leaving our fac-tory.
Responsibility for safe delivery was assumed bythe carrier upon acceptance of the shipment;therefore, claims for loss or damage sustained intransit must be made upon the carrier by therecipient as follows:
Visible Loss or Damage: Note any externalevidence of loss or damage on the freight bill, orexpress receipt, and have it signed by the carrier'sagent. Failure to adequately describe such exter-nal evidence of loss or damage may result in thecarrier's refusing to honor your damage claim.The form required to file such claim will be suppliedby the carrier.
Concealed Loss or Damage: Concealed loss ordamage means loss or damage which does notbecome apparent until the merchandise has beenunpacked and inspected. Should either occur,make a written request for inspection by carrier'sagent within fifteen (15) days of the delivery date;then file a claim with the carrier since the damageis the carrier's responsibility.
If you follow the above instructions carefully, wewill guarantee our full support of your claim to becompensated for loss or concealed damage.
DO NOT — FOR ANY REASON — RETURNTHIS UNIT WITHOUT FIRST OBTAININGAUTHORIZATION. In any correspondence toThermo, please supply the nameplate data,including catalog number and serial number.
2
GENERAL INFORMATION
The Precision Dubnoff Metabolic Shaking IncubatorBath and the Precision Shallow-Form ShakingBath have been designed primarily for the incubationof tissue and homogenates.
The microprocessor control panel houses allfunctions necessary to operate the bath. The fivepush-button switches and single display windowallow the operator to adjust bath temperature,motor speed, and calibration via a single set ofcontrols.
The proportional integral derivative temperaturecontrol allows precise temperature control from5°C above ambient to 55°C without cover and to99.9°C with use of the gable cover provided.
A high limit thermostat is provided and can be setto prevent heater runaway in the event oftemperature control failure.
Tray shaking speed is easily adjusted between 30and 200 cycles per minute at 5 cpm intervals.
The tray stroke can be adjusted to three differentlengths: 0.5", 1" and 1.5". The drive mechanismcontains self-lubricating bearings which require nomaintenance.
The tray is easily removable and rides silently onfour plastic balls.
The interior of the bath is constructed of stainlesssteel and is designed for operation with steriledistilled water or equivalent. Do not use deionizedwater. The acceptable resistivity range is 50 K to1M ohm (conductivity 1 to 20 micro Siemans).The acceptable pH range is 7 to 9.
The body is made from galvanized steel and ispainted for added protection. A drain is located atthe far left hand end of the bath. A stainless steelgable cover is also provided with the bath.
The 240 volt units are identical in appearance to the120 volt units except for the addition of a step-downtransformer for the motor.
PERFORMANCE DATA
The following table identifies the specifications forthe Shallow Form and Dubnoff Shaking Baths.
Listing of Models included in this Manual
Cat.No. Description Volts Hertz Watts Amps Mains Fuses Power SupplyBoard Fuses
2876 Dubnoff MetabolicShaking Incubator
Bath
120 50/60 1050 8.8 N/A N/A
2877 240 50/60 1050 4.4 FST-5x20-6.3A FST-6.3x32-63mA
2874 Shallow FormShaking Bath
120 50/60 1050 8.8 N/A N/A
2875 240 50/60 1050 4.4 FST-5x20-6.3A FST-6.3x32-63mA
Performance Data
WithCover
WithoutCover
37°CUniformity 56°C
±0.05 ±0.15
±0.05 ±0.2
37°CSensitivity 56°C
±0.05 ±0.1
±0.05 ±0.1
3
INSTALLATION
WARNINGINSTALLATION SHOULD BE COMPLETED BYQUALIFIED PERSONNEL ONLY.
Location - The most uniform operating conditionswill be obtained by placing the bath on a level surfacein an area remote from drafts, ventilating outlets,radiators, and other rapidly changing ambientconditions.
Environmental Conditions- This instrument isdesigned to operate safely under the followingconditions:
• Indoor Use Only• Temperature: 5° to 40° C• Maximum Relative Humidity: 80% for
temperatures to 22°C• Maximum Altitude 2000 meters
• Mains supply voltage flucuation ±10, or perproject plan
• Installation (Overvoltage) category II,Pollution Degree 2
1 Installation category (overvoltage category) definesthe level of transient overvoltage which the instrumentis designed to withstand safely. It depends on thenature of the electricity supply and its overvoltageprotection means. For example, in CAT II which isthe category used for instruments in installationssupplied from a supply comparable to public mainssuch as hospital and research laboratories and mostindustrial laboratories, the expected transientovervoltage is 2500V for a 230V supply and 1500V fora 120V supply.
2 Pollution Degree describes the amount ofconductive pollution present in the operatingenvironment. Pollution Degree 2 assumes thatnormally only non-conductive pollution such as dustoccurs with the exception of occasional conductivitycaused by condensation.
Maximum performance is assured across thefollowing temperature range:
• 15ºC to 45ºC
Electrical Connections -
IMPORTANTFOR PERSONAL SAFETY, THIS APPARATUSMUST BE PROPERLY GROUNDED.
1. The power cord provided on this unit is equippedwith a three-prong (grounding) plug which mateswith standard three-prong grounding wallreceptacle to minimize the possibility of electricshock hazard from this apparatus. If in doubt theuser should have the wall receptacle and circuitchecked by a qualified electrician to make surethe receptacle can provide adequate currentand is properly grounded.
2. Where a standard two-prong wall receptacle isencountered, it is the personal responsibilityand obligation of the user to have it replaced witha properly grounded three-prong wall receptacle.Do not, under any circumstances, cut or removethe third (ground) prong from the power cord.Do not use a two-prong adapter plug.
Determine the total amount of current being used byother apparatus connected to the circuit that will beused for this apparatus. It is critical that the addedcurrent demand (see nameplate) of this and otherequipment used on the same circuit does not exceedthe rating of the fuse or circuit breaker.
CAUTIONBE SURE THAT THE POWER SUPPLY IS OFTHE SAME VOLTAGE AS SPECIFIED ON THENAMEPLATE.THE POWER CORD IS THE MAINSDISCONNECT. MAKE SURE THE RECEPTACLEIS EASILY ACCESSIBLE AFTER UNIT IS INWORK LOCATION.
Shaker Clip Installation - The spring retainersprovided are designed to firmly hold flask clips in theshaking tray holes.1. It is important that these retainers be inserted
into tray holes before inserting optional flaskclips.
Stroke Length Adjustment - The length of theshaker stroke is set at the factory for a 1" stroke. Thefollowing procedure should be observed whenchanging stroke lengths.
4
WARNINGTURN OFF POWER TO THE BATH ANDDISCONNECT THE BATH FROM ITS POWERSUPPLY.
1. To gain access to the motor drive hub, removefour screws in upper side panel corners, andcarefully open the control panel. Once opened,the 3-position drive hub will be immediatelyvisible at top-center of control housing.
2. To alter the stroke length, unscrew the bearingmounting screw from its present position andrethread the screw firmly into the hole that willprovide the desired stroke length. The holeclosest to the hub center provides the shorteststroke; the one furthest away, the longest. Thethree threaded openings provide stroke lengthsof 0.5", 1.0", and 1.5".
3. After selecting desired stroke length, close controlpanel and replace the four screws. Reconnectthe bath to power source.
Dubnoff Flowmeter Assembly (Optional) -
1. The optional flowmeter assembly is installed byplacing the dovetail on the front of the flowmeterinto the mating bracket located on the back rightside of the bath. The flowmeter is calibrated foruse with oxygen, nitrogen, and CO2 and isscaled to read delivery rates up to 10 standardcubic feet per hour.
2. Connect the bottom hose barbs to the gassources. The top hose barbs connect to thegassing hood(s) with the tubing provided. Avalve is connected to each of the flowmeters formore precise control of the atmosphere.
WATER LEVEL REGULATOR(OPTIONAL)
INSTALLATION INSTRUCTIONS - Use thefollowing steps along with Figs. 1 & 2 shown on thefollowing page.
1. Turn off unit, disconnect power & drain waterfrom the bath.
2. Unscrew drain plug from side of bath body.3. Replace with elbow connector (shipped loose).
NOTETO INSURE GOOD SEAL, WRAP THREADSWITH TEFLON TAPE OR EQUIVALENTSEALER.4. Tighten elbow connector so open end (tube
fitting) faces straight down.5. Place Water Level Regulator Bracket
Assembly on the lip of the bath pan (drain sideof the bath towards the rear of the unit). Thesmall flange with gasketing near the top of thebracket should rest against the inside of thebath pan. The other 2 flanges with gasketingshould rest against the outside of the bathbody.
6. Insert the plastic tubing (coming from thebottom of the water level regulator) into theelbow connector (at the drain) & tighten theelbow connector fitting firmly to insure a goodseal.
7. Uncoil Tygon tubing & press onto 1/4" HoseBarb Fitting (located at the top of water levelregulator).
8. Hook-up other end of the tygon tubing to watersupply & turn on water. (Water pressure shouldfall within the following range: MIN is approx. 15PSI, MAX is approximately 75 PSI)
NOTEWATER LINE MARKING ON THE WATER LEVELREGULATOR IS AN INDICATOR OF THEAPPROXIMATE WATER LEVEL THAT WILLBE MAINTAINED IN BATH. THE ASSEMBLYHAS BEEN SET TO MAINTAINAPPROXIMATELY 1-3/4" OF WATER. TO RAISETHE SET WATER LEVEL, LOOSENTHUMBSCREW & RAISE WATER LEVELREGULATOR TO DESIRED LEVEL (COINCIDEWITH WATER LINE MARK) & TIGHTENTHUMBSCREW TO HOLD WATER LEVELREGULATOR IN PLACE.
5
WATER LEVEL REGULATOR ASSEMBLY
FIGURE 1SIDE VIEW OF BATH
Tygon Tubing
1/4” Hose BarbFitting
Hose Clamp
Water LevelRegulator
Bath Drain
ElbowConnector
PlasticTubing
Bracket
Vent Tube
TOWATER
SUPPLY
Gasket
Bath Pan
Bath Body
Thumbscrew
TOWATER
SUPPLY
FIGURE 2CUTAWAY FRONT VIEW OF BATH
6
Se t Point
Actual
Bath Te mp ., °C
Sp e e d , RPM
Sp e e d , RPM
Bath Te mp ., °C
START/ STOP
SELECT/ ENTER
Te mp .Offse t
He ate r On
Shake r
Pre ss SELECT/ ENTER ag ain to se t the ne w value .
Pre ss SELECT/ ENTER b utton to se t p oint.
Pre ss START/ STOP to b e g in or e nd shaking .
Pre ss or until value is d isp laye d .
To ad just temp erature or shaking sp e ed :
FIGURE A
7
EXPLANATION OF CONTROLS
Power Switch - The power switch is located onthe lower right hand side of the bath, it providespower for the entire unit.
Hi-Limit Thermostat - The Hi-Limit Thermostatatis located immediately to the left of the powerswitch on the lower right hand corner of the bath.The high limit thermostat provides prevention ofheater runaway in the event of temperature controlfailure.After the bath temperature has stabilized, astandard screwdriver can be used to adjust thepotentiometer. When delivered, the Hi-Limit isturned fully clockwise (highest setting). In thisposition, the Hi-limit light will be OFF. Turn thepotentiometer counterclockwise until the Hi-Limitlight is ON, thenadjust clockwise 1/8 of a turn.Verify that the Hi-Limit light is OFF. Nowif your bath temperature rises above thedesired setting, the Hi-Limit protectionwill be activated.
The Control Panel is located on top ofthe bath.
1. LED Display - The three-digit LEDdisplay is used to show both theactual and setpoint values fortemperature and shaking speed.
2. Heater On Lamp-The "Heater ON" lamp is illuminatedwhen power is applied to the heater.
3. Indicator Lamps - These lamps indicate which of 4 parameters (Actual Temp, Actual Speed, Setpoint Temp, and Setpoint Speed) is displayed in the LED window.
4. Enter Key - The Enter Key is used to choose which parameter is displayed in the LED window, and is also used to store a new setpoint value.
1
2
4
5
3
6
5. UP & DOWN Keys - are used to adjust temperature and speed setpoint values. Pressing & holding these keys will increment/ decrement the display value slowly at first, and then rapidly if held.
6. Offset Key- is used to adjust the temperature to match a calibrated reference thermometer.
7. Shaker Start/ Stop Key - This key is used to toggle the tray shaking motion on or off.
7
OPERATIONCAUTION
EXERCISE CARE WHEN USING ACIDIC ORCAUSTIC SOLUTIONS AS THEY WILL ATTACKTHE GALVANIZED STEEL BATH BODY IF SPILLEDINTO THE BATH. IF SPILLS DO OCCUR, THE BATHLIQUID SHOULD BE IMMEDIATELY DRAINED ANDTHE UNIT THOROUGHLY FLUSHED. SPILLS ANDCONDENSATION SHOULD BE CLEANED/REMOVED FROM ALL METAL SURFACES AFTEREACH USE.
When filling the bath with water, allowance must bemade for the displacement of water upon immersionof samples. Also make allowance for splashing ofwater from tray oscillation movement.
CAUTIONWATER LEVEL REQUIREMENTS:MINIMUM LEVEL - ONE INCH OF WATERSHOULD BE MAINTAINED AT ALL TIMES. THISLEVEL WILL KEEP HEATERS COVERED ANDWILL HELP PREVENT HEATER FAILURE.MAXIMUM LEVEL - WATER LEVEL SHOULDBE KEPT LOWER THAN THE TRAY SHAFTFITTING. WATER FILLED BEYOND THIS LEVELCOULD POSSIBLY SEEP INTO CONTROLPANEL AND CAUSE DAMAGE.
To conserve energy, reduce evaporation, andincrease temperature control accuracy, use thegable cover provided. Do not use aluminum foil asa cover, as it may cause corrosion due to anelectrochemical reaction.
1. Add distilled water to bath. Use water levels asinstructed above.
2. Power up: Depress the power switch locatedat the lower right hand corner of the bath. Theunit is fully operational upon application ofpower, and the display will read actual bathtemperature.
3. To set temperature control point:a. Press ENTER until setpoint temperature is
displayed.b. Press UP or DOWN until desired setpoint
is displayed.c. Press ENTER again to set the new value.d. Display will return to actual temperature.e. If ENTER is not pressed, new values will
not be set and display will return to actualtemperature.
4. To set new speed:a. Press ENTER until setpoint speed is
displayed.b. Press UP or DOWN until desired speed is
displayed.c. Press ENTER again to set new speed.d. Display will show actual speed for 10
seconds, then return to actual temperature.e. If ENTER is not pressed, new values will
not be set and display will return to actualtemperature.
5. To begin or end shaking motion:a. Press START/STOP key.
6. To set temperature offset:a. Temperature offset should be used to match
a stable bath's actual temperature displayto a calibrated thermometer. The offsetvalue is entered as the difference betweenthe two values.
b. Press ENTER until actual temperature isdisplayed.
c. While pressing OFFSET, press UP orDOWN keys to desired value. Continueholding offset and press ENTER to set newvalue.
d. If ENTER is not pressed, new values will notbe set and display will return to previoustemperature value.
e. Display should now match your calibratedthermometer.
f. Temperature setpoint will now control atprevious setpoint plus offset value.
g. Repeat step 3 to readjust setpoint to desiredvalue.
h. Example: Setpoint is 37°and actual displaybath temperature is stable at 37°. Calibratedreference thermometer reads 37.2°. PressOFFSET and the UP key until display reads.2. Press ENTER while still holding OFFSETkey. Release keys. Display and Setpointwill now be 37.2. Readjust setpoint to 37°.
(continued)
8
NOTEAS WATER BATHS ARE OPERATED,ESPECIALLY AT ELEVATED TEMPERATURES,CONDENSATION, POSSIBLY ACONSIDERABLE AMOUNT, FORMS ON THEUNDERSIDE OF GABLE COVER. REMOVETHE COVER WITH CARE SO THAT WATERFALLS BACK INTO THE BATH CHAMBER, ANDNOT ON BATH SURFACE.THE COVERSHOULD BE PLACED UPSIDE DOWN WHENREMOVED TO MAINTAIN A DRY WORK AREA.
CAUTIONWHEN OPERATING AT TEMPERATURESGREATER THAN 60°C, DO NOT TOUCH THEMETAL SURFACE OF THE GABLE COVER.ALWAYS USE THE GABLE COVER KNOB.
WARNINGEXPLOSION, IMPLOSION, OR THE RELEASEOF TOXIC OR FLAMMABLE GASES, RISINGFROM THE MATERIAL BEING HEATED, IS THESOLE RESPONSIBILITY OF THE USER.
MAINTENANCE
OPTICAL DISC - Check the optical disc monthly.Verify that the optical disc is free of foreign material.If not, wipe disc clean. Rotate disc by hand one turnclockwise and verify that disc does not rub againstoptical sensor; loosen 2 set screws on eccentricand reposition disc, if required.
CLEANING - Stainless steel will resist corrosion;however, it is not impervious to it. Propermaintenance of the stainless steel bath chamberwill help assure many years of service. It should becleaned regularly with mild soapy water and rinsedwith distilled water. Should algae or otherundesirable microorganisms form on the top of thebath media, add a little formaldehyde or quaternaryammonium germicide available from Thermo.
CAUTIONAVOID SPILLING HARSH CHEMICALS ONTOTHE BATH AS CORROSION OF THESTAINLESS STEEL MAY RESULT.
IMPORTANTTHE USER HAS THE RESPONSIBILITY FORPERFORMING THE APPROPRIATEDECONTAMINATION IF HAZARDOUSMATERIAL IS SPILLED ON OR INSIDE THEBATH.
IMPORTANTIF IT IS NECESSARY TO USE THE FOLLOWINGCHEMICALS, LIMIT THE TIME TO A MAXIMUMOF FOUR HOURS. CLEAN SURFACESIMMEDIATELY AFTER USE.-Aluminum Chloride -Barium Chloride-Bichloride of Mercury -Calcium Chloride-Carbolic Acid -Chlorinated Lime-Citric Acid (boiling) -Dakin's Solution-Ferrous Chloride -Mercury Salts-Lysol Mercuric Chloride -Phenol-Potassium Permanganate -Sodium Hypochlorite-Potassium Thiocyanate -Tartaric Acid-Stanous Chloride
CAUTIONNever use the following chemicals.
-Aqua Regia -Ferric Chloride-Iodine -Sodium Azide-Sulfuric Acid
CAUTIONDO NOT USE OTHER CLEANING ORDECONTAMINATION METHODS WITHOUTFIRST CONTACTING TECHNICAL SERVICES.
Removing Discoloration: Should the stainlesssteel ever become discolored by iron rust, use thefollowing procedure to remove all traces of the rustand restore the stainless steel.
WARNINGOBSERVE THE FOLLOWING SAFETYPRECAUTIONS! USE HEAVY GLOVES OROTHER ADEQUATE HAND PROTECTION.WEAR GOGGLES OR OTHER ADEQUATEEYE PROTECTION. WORK ONLY IN AREASWITH ADEQUATE VENTILATION.
Prepare a solution of 20% nitric and 1.5%hydrochloric acid (if preferred, a 2% to 5% solutionof warm oxalic acid may be used). Swab solutionover surface, allowing it to remain until all rust isloosened. This will usually take 1 to 2 minutes.
As soon as rust is loosened, immediately flushwith clean distilled water until all acid is removed.
Periodic Safety Check : Test the operation of theHi-Limit thermostat, as described on page 6, everythree months.
9
3. Connect the negative lead of the voltmeter toTP2 - COM. Select a VDC of 20. Connect thepositive lead to TP1 - UNREG.
4. Turn ON the main power.
5. The voltmeter should be reading approximately14 volts DC ±2.
6. Connect the positive lead to TP3 ±5V. Thevoltmeter should be reading +5 volts DC ±0.5.
7. Turn OFF main power. Change the scale ofthe voltmeter to 200 VDC. On later versionsof the POWER SUPPLY board there is ajumper JP1, located near the transformer,that must be installed to measure the followingvoltage.
8. Connect the negative lead of the meter toanode (non-stripped end) of CR6 and thepositive lead to the cathode (stripped end) ofCR7.
9. Turn ON the main power and measure thevoltage. The measured voltage should bebetween 140 and 150 VDC.
10. Turn OFF the main power.
11. Connect the display board ribbon connectorto the power supply board at J102 and thenrepeat steps 3 thru 6. Do not connect theconnector to the CPU board at this time . If theabove voltages are not measured again, thedisplay board has a bad component which isloading down the voltages. If the voltages arestill present, continue on to step 12.
12. Connect the display board ribbon connectorto the CPU board J310 and repeat steps 3 thru6. If the above voltages are not measuredagain, the CPU board has a bad componentwhich is loading down the voltages. This boardwill have to be replaced.
TROUBLESHOOTING
WARNINGSERVICE SHOULD BE PERFORMED ONLY BYA QUALIFIED TECHNICIAN. BEFOREREPLACING ANY ELECTRICAL ORMECHANICAL COMPONENTS, UNPLUG THELINE CORD. IF ELECTRICAL POWER ISREQUIRED FOR SERVICE, USE EXTREMECARE.
Refer to Problems and Solutions for troubleshootinginformation on the baths. This guide provides thebasic information required to repair the bath.
The following is a list of the tools and instrumentsrequired to perform the procedures outlined in theTroubleshooting "Problems & Solutions" section.
Tools Needed:• Phillips or Flat Blade Screwdriver• 7/16" Socket or adjustable wrench• Ohmmeter• DC Voltmeter• AC Voltmeter• 5VDC Power Supply
When changing circuit boards, please useCAUTION when re-installing the flat cableconnectors that come from the display board.Make sure the pins are NOT bent or broken. Circuitboards will not operate correctly if these pins havebeen abused because they will not receive thenecessary signals from other boards.
Before attempting any troubleshooting for aparticular problem, it is good practice to verifypower supply voltages of the POWER SUPPLYboard #3176677. Read these steps to getacquainted with the procedure.1. Be sure that the main power source is OFF or
disconnected.2. Insure that J101 and J105 are connected to
the POWER SUPPLY BOARD. DisconnectJ102 that comes from the CPU and theDISPLAY at this time.
10
a. Place the negative lead of a DC voltmeter onTP1-COM test point. Measure the voltage atU7-pin 2. It should be approximately 14 voltsDC. Then measure the voltage at U7-Pin 6.It should be approximately 5 volts DC. If the14 volts is present but not the 5 volts, the CPUboard must be replaced.
4. Check temperature probe.a. Measure the bath water temperature and
make note of it. Make sure it will not changedrastically during this check.
b. With a DC voltmeter, measure the supply ofthe temperature sensor at J302 pins 1 & 3. Itshould be approximately 5 volts. If it is, thencontinue on to step C. If not, see Step 3a.
c. Measure the output of the temperature sensorat J302 pins 2 & 3. Pin 3 being the referenceor ground. The output relationship of voltageto degrees centigrade is listed in the tablebelow. Compare the measured voltage tothe temperatures listed to determine if theprobe is working.
5. The bath is not heating when it should berequesting heat. Voltage measurements aremade on the POWER SUPPLY BOARD#3176677.a. Select a setpoint temperature at least 10°
above what the actual temperature is. Thebath should be requesting heat as indicatedby the heater "ON" indicator lamp on the frontpanel. It should be on continuously, notflashing.
b. Measure the voltage at U1-PIN 2 with respectto TP2-COM. It should be no greater than 4VDC.
c. Measure the DC voltage across R4, sincethe bath is requesting heat, there should becurrent flowing through this resistor makingthe voltage drop equal to 3 vdc ±0.5.
GENERAL INFORMATION - The POWERSUPPLY PCB ASSEMBLY #3166924 has the triac(solid state AC voltage switch) on it which suppliesthe power to the heater. This triac is "told" to operate,when needed, by the microprocessor.
Another device, known as an octo-coupler, servesas the high/low voltage isolator between the triac andthe microprocessor.
When the bath starts experiencing temperatureproblem and/or variations, due to known controllermalfunctioning, these two components become primesuspects. The reason being they are under higheroperating stress than other components.
If the bath starts experiencing temperature problemssuch as no heat, or "creeping" upward heat, thenfollow the troubleshooting instructions below. Theseinstructions require the use of a voltmeter being ableto measure DC and AC voltages ( preferably a digitalvoltmeter).
WARNINGTHE FOLLOWING TROUBLESHOOTINGINSTRUCTIONS REQUIRE THAT POWER BEON. ONLY QUALIFIED SERVICE PERSONNELSHOULD PERFORM THESE PROCEDURES.
Open the control cover and familiarize yourself withthe POWER SUPPLY assembly #3166924. Locatethe triac (Q2), the opto-isolater (U1), the resistor(R4), and locate the test point #2 (TP2-COM). Thefirst measurements will be DC voltagemeasurements, a DC scale of at least 10 voltsshould be selected.
PROBLEMS & SOLUTIONS*********** Problem A : No Heat *************
1. Verify that the setpoint temperature is greaterthan the actual water temperature.
2. Verify that the HIGH TEMP light is "OFF". If thelight is "ON", turn the HIGH LIMIT CONTROL fullyclockwise.
3. Check temperature probe voltage reference.These measurements are on the CPU board#3176678.
TempDegrees C Volt
TempDegrees C Volt
10 0.500V 60 1.400V
20 0.680V 70 1.580V
30 0.860V 80 1.760V
40 1.040V 90 1.940V
50 1.220V 99 2.218V
11
d. If the last two steps are not as stated, thenmost likely the CPU board is bad and it willhave to be replaced. If they are,continue on.
e. Switch the voltmeter to an AC volts scalecapable of reading 120 volts.
f. Measure the voltage between U1-PIN 4 andU1-PIN 6. It should be less than 1 VAC.
g. If it is not, then most likely the opto-coupler U1is bad and the POWER SUPPLY board willhave to be replaced. If it is, continue on.
h. Measure the voltage directly across the heater.It should be line voltage 110VAC to 120 VAC.
i If it is not, then most likely the triac Q2 is bad,and the POWER SUPPLY board will have tobe replaced.
6. Check heater.a. Disconnect the bath from its electrical supply.
b. Isolate the heater from any circuitry bydisconnecting one of the heater leads.
c. Using an ohmmeter, check the heaterresistance. Appropriate heater resistancevalues are listed below:If the resistance reads 0 or infinity, thenreplace the heater.
d. Check the resistance between the heaterleads and ground (green wire). If theresistance reads 0 ohms, replace the heater.
********* Problem B: Constant Heat **********
1. Bath is heating when it is not requesting heat.a. Select a setpoint temperature at least 10°
below the actual temperature. The bath shouldnot be requesting heat as indicated by theHEATER ON indicator lamp on the frontpanel. It should NOT be on continuously oreven flashing.
b. Measure the voltage at U1-PIN 2 with respectto TP2-COM. It should be no less than 4VDC.
c. Measure the DC voltage across R4. Thevoltage should be approximately zero volts.
d. If the last two steps are NOT as stated, thenmost likely the CPU board is bad and it willhave to be replaced, otherwise, continue on.
e. Switch the voltmeter to an AC volts scalecapable of reading 120 volts.
f. Measure the voltage between U1-PIN 4 andU1-PIN 6. It should be line voltage 110 VACto 120 VAC.
g. If it is not, most likely the opto-coupler U1 isbad and the POWER SUPPLY board willhave to be replaced. If it is, continue on.
h. Measure the voltage directly across theheater. It should be approximately 0 VAC.
i. If it is not, then most likely the triac Q2 is bad,and the POWER SUPPLY board will have tobe replaced.
2. Check Temperature Probe. Problem A, Step 4.120 VOLT 240 VOLT
Dubnoff &Shallow FormShaking Baths
15 OHMS 57 OHMS
12
*** Problem C: Unstable Temperature *** Control or Display
1. Use gable cover provided to improvetemperature control.
2. If control is stable but not at desired temperature,then check temperature calibration. Re-adjust ifnecessary.
3. Check Temperature Probe, Problem A, Step 4.
** Problem D: Display Reads NNNN or UUUU **
The control boards have the ability to detect anOPEN or SHORTED temperature sensor. Thesetwo conditions are shown on the display as follows:
DISPLAY CONDITION
U U U U
Before coming to the conclusion that the probe isbad when one of these displays appear, check theconnection of the probe to the circuit board forpolarity and alignment.
**Problem E: Display Reads all Eights(8888) **
1. The most common cause of this problem is thefailure of the driver integrated circuit on theDISPLAY/KEYBOARD board (#3176679).Replace it.
*** Problem F: Motor Does Not Shake Tray ***
1. Verify that the speed setpoint is greater than 0.
2. Later versions of the POWER SUPPLY boardhave a jumper JP1 located near the transformer.Verify that this jumper is installed if applicable.
3. Press the Start/Stop key. If the tray shakesviolently for a few moments then stops, replacethe optical sensor.
4. Check tray linkage for binding.a. Remove tray from the bath.b. Disconnect the push rod from eccentric by
removing the bolt.
SHORT CIRCUIT
OPEN CIRCUIT
c. Slide the push rod back and forth. The pushrod should slide very easily in its housing. Ifnot, replace the push rod and the bearinghousing.
5. Check motor.a. Disconnect motor connector J103 from the
power supply board.
b. Using an ohmmeter, measure the resistancebetween the black leads (Pins 3 & 4). Theresistance should be approximately 1300ohms.
c. Using an ohmmeter, measure the resistancebetween the blue leads (Pins 1 & 2). Theresistance should be approximately 130ohms.
d. If neither of the above resistances are not asstated, replace the motor.
e. Check to make sure there is an open circuitbetween any combination of black and blueleads. If a resistance is measured betweenany black and blue combination, replacethe motor.
6. Check the DISPLAY board #3176679. Eventhough this check is for the DISPLAY board, thevoltage measurements will be made on thePOWER SUPPLY board. The command signalthat drives the output circuit for the motor comesfrom the display board.a. Be sure the main power is "OFF".
b. Place the negative lead of a DC voltmeter toTP2-COM and the positive lead of thevoltmeter to the lead of R6 closer to J102.Disconnect the motor from the POWERSUPPLY board by disconnecting J103.
c. Turn "ON" the main power and select a speedof 200.
d. During normal operation, the voltage at R6should be about 4.4 volts DC with the motor"OFF". Press the START/STOP key. Fornormal operation, this voltage will start toreduce to about 2.3 volts DC in approximately15 seconds and then jump back to 4.4 voltsDC and remain there until the START/STOPkey is pressed again.
UUUU
13
e. If this signal is NOT changing as mentionedabove when the START/STOP key ispressed, then most likely the problem is inthe DISPLAY board and it will have to bereplaced.
f. Re-connect the motor back to J103 on thePOWER SUPPLY board.
7. Check Power Supply Board #3166924.a. If Step 6 has checked out fine, then possibly
the power circuit for the motor has failed.Locate the diode CR11 on the POWERSUPPLY board and place a DC voltmeteracross it with the positive lead on thecathode (band side) and the negative leadon the anode. The listed voltages appearacross the diode for different speeds. Selecta couple of these speeds and verify thevoltages.
*Problem G: Motor Speed Erratic or Fully on *
1. Check Optical Disc.a. The optical disc should be free of foreign
material. If not, clean disc.
b. The disc should be parallel to the bottom ofthe bath and centered in the optical sensor. Ifnot, loosen the 2 set screws on eccentric andreposition the disc.
c. The disc should be smooth and flat. If the discis bent or warped then replace the disc.
d. While the motor is operating, the disc shouldNOT come in contact with the optical sensorat any time.
2. Check Optical transmitter.a. Connect the negative lead of a DC voltmeter
to TP1-COM on the CPU board.
b. With the bath "ON" and motor "OFF" or "ON",use the positive lead of the voltmeter tomeasure the voltage at J303-Pin 1 of theCPU board. The correct reading shouldapproximately be 1.2 volts DC. If the readingdeviates considerably from this, replace theoptical sensor.
3. Check Optical Sensor.Just as the Optical Disc can be dirty, the lensesof the optical transmitter and sensor can alsoaccumulate dust and dirt. It would be goodpractice before making the following voltagemeasurements to be sure these lenses areclean. The lenses are located on the inner wallsof the sensor.
a. Connect the negative lead of a DC voltmeterto TP1-COM on the CPU board.
b. Connect the positive lead of the DC voltmeterto the lead of R4 which is closer to the edgeof the circuit board.
c. Turn the bath power "ON" and the motor"OFF".
d. Turn the optical disc slowly by hand until adark portion of the disc is centered betweenthe optical sensor. The voltmeter readingshould be greater than 4 volts DC.
e. Repeat Step D so a clear portion of the disc iscentered between the optical sensor. Thevoltmeter reading should be less than 1 voltDC.
f. If the last two steps did not read correctly,then replace the optical sensor.
4. Check Display Board #34373101; Problem E,Step 6.
5. Check Power Supply Board #3166924;Problem E, Step 7.
SpeedSelected
Voltage Across CR11Volts DC
30 20
50 30
70 40
90 50
110 60
130 70
150 80
14
Before removing any parts for replacement, verifypart in question by following the instructions listedin the troubleshooting guide.
Refer to Parts Replacement Table below forappropriate replacement procedures. Failure tofollow parts replacement procedures may causedamage to the bath.
PARTS REPLACEMENT
NOTE: For easiest access to the control housing, place bath on the edge of a bench or table. Removefour screws on upper side of control housing and carefully lower hinged control panel to the verticalposition.
PARTS REPLACEMENT
WARNINGBEFORE REPLACING ANY PART, BE SUREBATH IS DISCONNECTED FROM POWERSOURCE. SERVICE SHOULD BE PERFORMEDBY A QUALIFIED TECHNICIAN.
CAUTIONWHEN REPLACING TEMPERATURE SENSOROR HEATER, MAKE SURE ALL SEALS AREWATERTIGHT BEFORE APPLYINGELECTRICAL POWER.
1. Remove connector J103 from power supply board.
2. Remove bolt on top of plastic bearing and remove bearing.
3. Remove 2 screws from optical sensor and remove sensor.
4. Loosen 2 socket set screws from motor drive eccentric and removeeccentric from motor shaft.
5. Remove 4 screws holding bracket to wall,then remove 4 screws holding motor to wall.
6. Reverse above procedure to install new motor.
1. Remove tray from bath.
2. Remove connector J302 from CPU board.
3. Remove temperature sensor fitting from inside bath pan.-Hold small nut on fitting firmly with a wrench.-Remove large fitting piece with another wrench.
4. Remove rubber grommet from temperature sensor.
5. Carefully slide sensor through the control housing and remove.
6. Reverse above procedure to install new temperature sensor.
7. Recalibrate new temperature sensor. See Temperature Recalibrationon page 17.
Replace Temperature Sensor
1. Remove connector J303 from CPU board.2. Remove 2 screws holding optical sensor to bracket and remove sensor.3. Reverse above procedure to install new sensor.
Replace Motor
Replace Optical Sensor
15
PARTS REPLACEMENT (CONT'D)1. From inside control housing, remove 2 nuts and disconnect
wires from heater leads.2. Remove two hex nuts from heater ends using a 13/16" socket
and remove heater3. Reverse above procedure to install new heater.
1. Remove four leads from thermostat terminals.
2. Remove two screws from thermostat bracket and removebracket.
3. Carefully tilt bath on its side.
4. Remove eight screws from bottom plate and remove plate.
5. Remove insulation from bottom of pan and between panand control panel wall.
6. Loosen two nuts from thermostat bulb bracket.
7. Carefully remove thermostat from control housing by slidingbulb through hole in control panel wall.
8. Reverse above procedure to install new Hi Limit thermostat.Use extreme care when installing new thermostat. A sharpbend in the thermostat capillary will crimp off flow ofhydraulic fluid.
1. Remove connectors J101, J102, J103, and J105 from board.Use extra care when removing J102 to not bend connectorpins.
2. Remove five nuts from board and remove board.3. Reverse above procedure to install new power supply board.
1. Remove bolt on top of plastic bearing and remove plasticbearing.
2. Disconnect tray from push rod and remove push rod.3. Remove jam nut from control side of bearing assembly.4. Slide bearing assembly out and into bath side of unit.5. Remove bearing cap and wiper seal from assembly.6. Reverse above procedure to install new bearing assembly.
1. Remove connectors J302 and J303 from CPU board.2. Remove connector J102 from power supply board. Use
extreme care when removing J102 to not bend connector pins.3. Remove 4 nuts from CPU board and remove CPU board and
Keyboard/Display board.4. Remove J301 from CPU board. Use extreme care when
removing J301 to not bend connector pins. Remove board.5. Reverse above procedure to install new board.
Replace Heater
Replace "HI Limit" Thermostat
Replace Power SupplyBoard
Replace BearingAssembly
Replace CPU or Display/Keyboard BoardSee note on the followingpage **
16
PARTS REPLACEMENT (CONT'D)
6. The software must be configured to match the Bath model. To enter configuration mode, press the upper left pushbutton
while applying power. The upper left push-button is labeled"Select/Enter." This push-button is used to enter configuration
codes and steps through the different levels of configurations.When a triangle is shown in the chart, the pushbutton is to be
depressed once for each symbol.
Immediately following power up with the push-button depressed,the readout will display a 3-digit number. This is the softwarerevision. The readout will then begin to do a self-test of digits. Pressthe "Calibrate" push-button once. The readout will display 0000.Follow the listing below to complete the configuration.
A. Enter 37 using up/down arrows. Press "Select/Enter"
B. Enter 12 using up/down arrows. Press "Select/Enter"
C. Enter 2.0 using up/down arrows. Press "Select/Enter"
D. Enter 500 using up/down arrows. Press "Select/Enter"
E. Enter 1 using up/down arrows. Press "Select/Enter"
F. Display Not Used. Press "Select/Enter"
G. Display Not Used. Press "Select/Enter"
H. Display will show raw count Press "Select/Enter"
I. LOW TEMP CALIBRATION*LITTLE c. Factory Setting. Press "Select/Enter"
J. HI TEMP CALIBRATIONBIG C. Factory Setting. Press "Select/Enter"
Configuration is now complete
Replace CPU or Display/Keyboard Board See note below **
* Calibration of the low and high end of the sensor input is done at the factory. Field calibration ofthe sensor may be performed using the following technique: Enter the configuration routine andpress the top left switch until a little "c" (Item H) is displayed. Add water that is around 10°C to thebath completely covering the sensor. Insert a calibrated thermometer. After the thermometerstabilizes, match the display setting to the thermometer reading by pressing the "UP" or "DOWN"push button switch. Press the top left switch. The readout will now display a big "C" (Item I).Remove water from the bath and add hot water of about 70 - 80°C. After the unit stabilizes, matchreadout display to temperature on thermometer and press the top left switch. Calibration is nowcomplete.
**Note: When replacing CPU printed circuit board reprogramming may be necessary. Follow thoroughly instructions provided with the replacement circuit board.
17
TEMPERATURE CALIBRATION
The following provides a step-by-step procedurefor temperature calibration. Do not deviate fromthe procedure or the calibration of your bathmay be inaccurate.
CAUTIONTHIS PROCEDURE SHOULD ONLY BEPERFORMED AFTER INSTALLING A NEWTEMPERATURE PROBE INTO THE BATH.
1. Connect the temperature probe connector toJ302 on CPU board.
2. Turn Power switch to the OFF position.
3. Press and hold UP, DOWN, and ENTERkeys while turning Power ON.
4. The unit will now cycle through an LED displaytest. Press ENTER to end test.
5. The display will now read 0000. Press UP untildisplay reads 0012.
6. Press ENTER - The unit is now in calibrationmode. If some other value than 0012 isdisplayed and ENTER is pressed, the unit willreturn to normal operating mode and displaywill show actual bath temperature.
7. The display will show a raw count. PressENTER.
8. The display will now show CXX.X (XX.X is theactual bath temperature) - this is LowTemperature Calibration.
9. Place the temperature probe and a calibratedreference thermometer into an ice bath. PressUP or DOWN until the display value matchesthe reference thermometer. Press ENTER tostore the new low temperature calibrationvalue.
10. The display will now show CXX.X - this is HighTemperature Calibration. (XX.X is the actualbath temperature).
11. Place the temperature probe and a calibratedreference thermometer into a steaming waterbath. Press UP or DOWN until the displayvalue matches the reference thermometer.Press ENTER to store the new hightemperature calibration value.
NOTEPRESSING OFFSET AT ANY TIME DURINGTHE CALIBRATION PROCESS WILL RETURNUNIT TO NORMAL OPERATION MODE ANDDISPLAY WILL SHOW ACTUAL BATHTEMPERATURE.
18
REPLACEMENT PARTS LIST
DescriptionPart Number
120V 240V
PCB, Assy. Kit, Power Supply 3166924
PCB, Assembly, CPU 3167119
PCB, Assembly, Display 3176679
Wire Harness 3176700
RPM Optical Sensor Assembly 3167058
Temp. Probe Assembly 3167144
Bearing Assembly Kit 3167155
Push Rod 3177567
O-Ring Kit 3167129
Drain Kit (Includes O-Ring & Nut) 3166191
RPM Detector /Eccentric Kit 3167153
Heater Kit 3167138 3167139
Bath Pan Kit 3167154
"Hi Limit" Thermostat Kit 3167143
On/Off Switch 3175318
Hi Limit Light, Amber 3177575 3173907
Line Cord 3178034 3179481
Motor Assembly Kit 3167047
Mains Fuse (FST-5x20-6.3A) N/A 3172449
Power Supply Board Fuse N/A 3175930
Power Cord Receptacle N/A 3179502
19
ACCESSORY PARTS LIST
Part Number Description
3166234 Shaker Tray Assembly
3161588 Gable Cover (Dubnoff)
3166238 Gable Cover (Shallow Form)
3166223 Water Level Regulator Kit
3166181 Flow Meter Assembly
3164452 Flow Meter Bracket
3162639 Gassing Hood, Small
3162640 Gassing Hood, Large
3166184 0.5 ml Microcentrifuge Tube Rack
3166185 1.5 ml Microcentrifuge Tube Rack
3166250 Quarternary Ammonium Type Germicide
CatalogNumber Item
MaximumClip
Capacity
3166216 Clip for 13mm to 25mm dia test tube 25
3166227 Clip for 25ml flask 20
3166198 Clip for 50ml flask 15
3166221 Clip for 125ml flask 9
3166566 Clip for 250ml flask 6
3166199 Clip for 500ml flask 4
3166200 Clip for 1000ml flask 2
20
Hig
h Te
mp.
Off
On
FRO
NT
VIEW
B
OD
Y
PAN
SC
RE
W8
PLAC
ES T
O R
EMO
VEBO
TTO
M C
OVE
RB
OTT
OM
CO
VE
RC
ON
TRO
L C
OV
ER
INS
ER
TS
CR
EW
DR
IVE
RTO
AD
JUS
T H
I LIM
ITTH
ER
MO
STA
T
FLO
WM
ETER
ASS
EMB
LYIS
OPT
ION
AL
ASSEMBLY & SCHEMATIC DWGS.
SCRE
WR
EMO
VE F
OR
ACC
ESS
TOC
ON
TRO
LS-
4 PL
ACES
21
120
V U
NIT
TO
P VI
EW(W
ITH
CO
NTR
OL
CO
VER
OPE
N)
220076.DWG
DU
BNO
FF F
LOW
MET
ERBR
ACKE
T OPT
ICAL
DIS
C
CPU
, PC
B
DIS
PLAY
BO
ARD
VOLT
AGE
CO
NN
ECTO
RW
IRE
HAR
NES
STH
REA
DED
HO
LES
FOR
STR
OKE
LEN
GTH
AD
JUST
MEN
T
PUSH
RO
D
HEAT
ERHE
ATER
BRAC
KET
NUT
LOC
KWAS
HER
WAS
HER
PIPE
PLU
GPAN
RIV
ET M
OU
NT
BUTT
ON
SCR
EW (S
HAL
LOW
FOR
M O
NLY
)
SPRI
NG, T
HERM
OM
ETER
HO
LDER
(SH
ALLO
WFO
RM
ON
LY)
TRAY
SPLI
T W
ASH
ERFL
AT W
ASH
ERSC
REW
22
240
V U
NIT
TO
P VI
EW(W
ITH
CO
NTR
OL
CO
VER
OPE
N)
DU
BNO
FF F
LOW
MET
ERBR
ACKE
T OPT
ICAL
DIS
CNU
T
VOLT
AGE
CO
NN
ECTO
RW
IRE
HAR
NES
STH
REA
DED
HO
LES
FOR
STR
OKE
LEN
GTH
AD
JUST
MEN
T
PUSH
RO
D
HEAT
ERHE
ATER
BRAC
KET
NUT
LOC
KWAS
HER
WAS
HER
PIPE
PLU
GPAN
RIV
ET M
OU
NT
BUTT
ON
SCR
EW (S
HAL
LOW
FOR
M O
NLY
)
SPRI
NG, T
HERM
OM
ETER
HO
LDER
(SH
ALLO
WFO
RM
ON
LY)
TRAYSP
LIT
WAS
HER
FLAT
WAS
HER
SCRE
W
MAI
NS
FUSE
S
POW
ER C
OR
D
23
120V UNIT END VIEW(WITH CONTROL COVER REMOVED AND WIRING EXCLUDED)
SCREW
WASHER
LOCKWASHER
PLASTIC BEARING
PUSH ROD
ECCENTRIC
METAL DISC
SET SCREW
RPM DETECTOR
ASSY
SCREW
NUT
BRACKET
SCREW
THERMOSTAT
SCREW
BRACKET
SCREW
POWER
ON/OFF
SWITCH
230V VERSIONS ONLY
TRANSFORMEROPTICAL DISC
SCREW
NUT
24F:\E3032\MANUAL\SHAKER.PRT
SCREWWASHERLOCKWASHER
PLASTIC BEARING
PUSH ROD
ECCENTRIC
METAL DISC
SET SCREW
RPM DETECTORASSY
SCREWNUT
BRACKET
SCREW
SCREW
SCREW
POWERON/OFFSWITCH
230V VERSIONS ONLYTRANSFORMER OPTICAL
DISC
240V UNIT END VIEW(WITH CONTROL COVER REMOVED AND WIRING EXCLUDED)
SCREW NUT
BRACKET
THERMOSTAT
25
BEARING ASSY
SPACER
JAM NUT
O'RING
BEARING CAP
WIPER SEAL
LOWER VIEWTEMPERATURE PROBE ASSEMBLY DETAIL
UPPER VIEWBEARING ASSEMBLY
TO REMOVE BEARING ASSEMBLY:-HOLD BEARING CAP FIRMLY WITHWRENCH-REMOVE JAM NUT-SLIDE BEARING ASSEMBLY ANDBEARING CAP OUT INTO PAN
FLEXFITTINGTEMP PROBE
ASSEMBLY
NUT
THERMOSTATCLIP
THERMOSTAT BULB(PART OF THERMOSTAT)
1/8” HALF COUPLING
Remove this way
TO REMOVE TEMPERATURE PROBE:-Hold nut on inside of panclosest to pan wall firmlywith wrench-Remove flex fitting-Slide rubber grommet overend of temperature probe-Slide temperature probe intocontrol housing
26
DRAIN PLUG
HEX NUT
BODY
'O' RING
DRAIN
BATH PAN
INSULATION
BODY
BOTTOM
COVER
HEATER
O'RING
PAN
NUT
(PROVIDED
WITH HEATER)
HEATER LEAD
(PART OF WIRE
HARNESS)
TO REMOVE HEATER:
-REMOVE HEATER BRACKET(S)
FROM INSIDE OF PAN
-REMOVE HEATER LEADS FROM
END OF HEATER
-REMOVE LARGE NUT LOCATED
IN AREA BETWEEN PAN AND BODY
WALL
-LIFT HEATER OUT OF PAN
NUT
(PROVIDED
WITH HEATER)
HEATER REMOVAL DETAIL
CUTAWAY VIEW OF DRAIN
27
NUT
DISPLAY PCB ASSY
LOCATED UNDERNEATH
CPU PCB ASSY
CONTROL
COVER
NUT
TO
OPTICAL
SENSOR
TO POWER SUPPLY
BOARD J102
TO TEMP
PROBE
CPU PCB ASSSEMBLY CONFIGURATION
28
WIR
ING
CO
NN
ECTI
ON
DIA
GR
AM
(120
V)
F:\E3032\MANUAL\66722C.PRT
29F:\E3032\MANUAL\00378901.PRT
TO C
ON
TRO
L PA
NE
L
TO H
EAT
ER
YLW
/GR
N
BLU
E
BLU
E
BR
OW
N
�
TO P
AN
LIN
E C
OR
D
INTE
RIO
R O
F B
ODY
(RE
F)
GR
OU
ND
CO
NN
EC
TIO
N- E
2
DE
TAIL
A
(240
V)
30
120V
WIR
ING
DIA
GR
AM
(P/N
343
7890
1)
31
240V
WIR
ING
DIA
GR
AM
(P/N
343
7890
2)
MO
TO
R A
SS
EM
BLY
PO
WE
R S
WIT
CH
S1
E1
CH
AS
SIS
GR
OU
ND
BLU
E (
NE
UT
RA
L)
BR
OW
N (
LIN
E)
PO
WE
R 2
30 V
.50
/60
HZ
1 P
H.
W1
DS
1
HIG
H T
EM
P L
IMIT
L
AM
P
H
IGH
TE
MP
LIM
ITS
WIT
CH
OP
EN
S O
N T
EM
P R
ISE
HR
1
1211108 97654321 16151413
1211108 97654321 16151413
1211108 97654321 16151413
4321
54321
321
876543218 97654321
321 321
321 321 321
8 97654321
87654321 4321
54321
J101
J105
J103
J102
J302
J303
J301
J201
DIS
PLA
Y /
KE
YB
OA
RD
P
CB
AS
SE
MB
LY
CP
U P
CB
AS
SE
MB
LY
4 1
25
S2
BLA
CK
BLU
E
BLA
CK
RE
D
WH
ITE
YE
LLO
W
RED
GR
DV
out
+5V
TE
MP
ER
AT
UR
ES
EN
SO
RA
SS
EM
BLY
GR
NB
LK
WH
TR
ED
GR
EE
N
WH
ITE
RE
D
BLA
CK
1 2
4 3
RP
M D
ET
EC
TE
RA
SS
EM
BLY
RE
DY
ELL
OW
BLA
CK
PR
IMA
RY
SE
CO
ND
AR
YR
ED
RE
D BLA
CK
GR
EE
N
230V
JU
MP
ER
FU
SE
S
32
TH
ER
MO
FIS
HE
R S
CIE
NT
IFIC
STA
ND
AR
D P
RO
DU
CT
WA
RR
AN
TY
Th
e W
arr
an
ty P
erio
d s
tart
s tw
o w
ee
ks fro
m th
e d
ate
yo
ur
eq
uip
me
nt is
sh
ipp
ed
fro
m o
ur
facili
ty. T
his
allo
ws fo
r sh
ipp
ing
tim
e
so
th
e w
arr
an
ty w
ill g
o i
nto
effe
ct
at
ap
pro
xim
ate
ly t
he
sa
me
tim
e y
ou
r e
qu
ipm
en
t is
de
live
red
. T
he
wa
rra
nty
pro
tectio
n
exte
nd
s t
o a
ny s
ub
se
qu
en
t o
wn
er
du
rin
g t
he
first
ye
ar
wa
rra
nty
pe
rio
d.
Du
rin
g t
he
first
ye
ar,
co
mp
on
en
t pa
rts p
rove
n t
o b
e n
on
-co
nfo
rmin
g in
ma
teria
ls o
r w
ork
ma
nsh
ip w
ill b
e r
epa
ire
d o
r re
pla
ce
d
at
Th
erm
o's
exp
en
se
, la
bo
r in
clu
de
d.
Insta
llatio
n a
nd
ca
libra
tio
n a
re n
ot
co
ve
red
by t
his
wa
rra
nty
ag
ree
me
nt.
Th
e T
ech
nic
al
Se
rvic
es D
epa
rtm
en
t m
ust
be
co
nta
cte
d fo
r w
arr
an
ty d
ete
rmin
atio
n a
nd
d
ire
ctio
n p
rio
r to
p
erf
orm
an
ce
o
f a
ny re
pa
irs.
Exp
en
da
ble
ite
ms,
gla
ss,
filte
rs a
nd
ga
ske
ts a
re e
xclu
de
d f
rom
th
is w
arr
an
ty.
Re
pla
ce
me
nt
or
repa
ir o
f co
mp
on
en
ts p
art
s o
r e
qu
ipm
en
t u
nd
er
this
wa
rra
nty
sh
all
no
t e
xte
nd
th
e w
arr
an
ty t
o e
ith
er
the
eq
uip
me
nt o
r to
th
e c
om
po
ne
nt pa
rt b
eyo
nd
th
e o
rig
ina
l w
arr
an
ty p
erio
d. T
he
Te
ch
nic
al S
erv
ice
s D
epa
rtm
en
t m
ust g
ive
prio
r
ap
pro
va
l fo
r re
turn
of
an
y c
om
po
ne
nts
or
eq
uip
me
nt.
At
Th
erm
o's
op
tio
n,
all
no
n-c
on
form
ing
pa
rts m
ust
be
re
turn
ed
to
Th
erm
o E
lectr
on
Co
rpo
ratio
n p
osta
ge
pa
id a
nd
re
pla
ce
me
nt
pa
rts a
re s
hip
pe
d F
OB
de
stin
atio
n.
TH
IS W
AR
RA
NT
Y IS
E
XC
LU
SIV
E A
ND
IN
L
IEU
O
F A
LL
O
TH
ER
W
AR
RA
NT
IES
, W
HE
TH
ER
W
RIT
TE
N,
OR
AL
O
R
IMP
LIE
D.
NO
WA
RR
AN
TIE
S O
F M
ER
CH
AN
TA
BIL
ITY
OR
FIT
NE
SS
FO
R A
PA
RT
ICU
LA
R P
UR
PO
SE
SH
AL
L A
PP
LY
.
Th
erm
o s
ha
ll n
ot
be
lia
ble
fo
r a
ny i
nd
ire
ct
or
co
nse
qu
en
tia
l d
am
ag
es i
nclu
din
g,
with
ou
t lim
ita
tio
n,
da
ma
ge
s r
ela
tin
g t
o l
ost
pro
fits
or
loss o
f p
rod
ucts
.
Yo
ur
loca
l T
he
rmo
Sa
les O
ffic
e i
s r
ea
dy t
o h
elp
with
co
mp
reh
en
siv
e s
ite
pre
pa
ratio
n i
nfo
rma
tio
n b
efo
re y
ou
r e
qu
ipm
en
t
arr
ive
s.
Prin
ted
in
str
uctio
n m
an
ua
ls c
are
fully
de
tail
eq
uip
me
nt
insta
llatio
n,
op
era
tio
n a
nd
pre
ve
ntive
ma
inte
na
nce
.
If e
qu
ipm
en
t se
rvic
e
is r
eq
uire
d,
ple
ase
ca
ll yo
ur
Te
ch
nic
al S
erv
ice
s D
epa
rtm
en
t a
t 1
-80
0-4
38
-48
51
(U
SA
an
d C
an
ad
a)
or
1-7
40
-37
3-4
76
3. W
e're
re
ad
y to
an
sw
er
yo
ur
qu
estio
ns o
n e
qu
ipm
en
t w
arr
an
ty, o
pe
ratio
n, m
ain
ten
an
ce
, se
rvic
e a
nd
sp
ecia
l
ap
plic
atio
n.
Ou
tsid
e t
he
US
A,
co
nta
ct
yo
ur
loca
l d
istr
ibu
tor
for
wa
rra
nty
in
form
atio
n.
Rev.
4
4/0
9
ISO
9001
REGI
STER
ED
33
TH
ER
MO
FIS
HE
R S
CIE
NT
IFIC
IN
TE
RN
AT
ION
AL
DE
AL
ER
WA
RR
AN
TY
Th
e W
arr
an
ty P
erio
d s
tart
s t
wo
mo
nth
s f
rom
th
e d
ate
yo
ur
eq
uip
me
nt
is s
hip
pe
d f
rom
ou
r fa
cili
ty.
Th
is a
llow
s f
or
sh
ipp
ing
tim
e s
o t
he
wa
rra
nty
will
go
in
to e
ffe
ct
at
ap
pro
xim
ate
ly t
he
sa
me
tim
e y
ou
r e
qu
ipm
en
t is
de
live
red
. T
he
wa
rra
nty
pro
tec-
tio
n e
xte
nd
s t
o a
ny s
ub
se
qu
en
t o
wn
er
du
rin
g t
he
first
ye
ar
wa
rra
nty
pe
rio
d.
De
ale
rs w
ho
sto
ck o
ur
eq
uip
me
nt
are
allo
we
d
an
ad
ditio
na
l six
mo
nth
s fo
r d
eliv
ery
an
d in
sta
llatio
n, p
rovid
ed
th
e w
arr
an
ty c
ard
is c
om
ple
ted
an
d r
etu
rne
d to
th
e T
ech
nic
al
Se
rvic
es D
epa
rtm
en
t.
Du
rin
g th
e first ye
ar,
co
mp
on
en
t pa
rts p
rove
n to
be
no
n-c
on
form
ing
in m
ate
ria
ls o
r w
ork
ma
nsh
ip w
ill b
e r
epa
ire
d o
r re
pla
ce
d
at T
he
rmo
's e
xp
en
se
, la
bo
r e
xclu
de
d. In
sta
llatio
n a
nd
ca
libra
tio
n a
re n
ot co
ve
red
by th
is w
arr
an
ty a
gre
em
en
t. T
he
Te
ch
nic
al
Se
rvic
es D
epa
rtm
en
t m
ust
be
co
nta
cte
d f
or
wa
rra
nty
de
term
ina
tio
n a
nd
dire
ctio
n p
rio
r to
pe
rfo
rma
nce
of
an
y r
epa
irs.
Exp
en
da
ble
ite
ms,
gla
ss,
filte
rs,
rea
ge
nts
, tu
bin
g,
an
d g
aske
ts a
re e
xclu
de
d f
rom
th
is w
arr
an
ty.
Re
pla
ce
me
nt
or
repa
ir o
f co
mp
on
en
ts p
art
s o
r e
qu
ipm
en
t u
nd
er
this
wa
rra
nty
sh
all
no
t e
xte
nd
th
e w
arr
an
ty t
o e
ith
er
the
eq
uip
me
nt o
r to
th
e c
om
po
ne
nt pa
rt b
eyo
nd
th
e o
rig
ina
l wa
rra
nty
pe
rio
d. T
he
Te
ch
nic
al S
erv
ice
s D
epa
rtm
en
t m
ust g
ive
prio
r
ap
pro
va
l fo
r re
turn
of
an
y c
om
po
ne
nts
or
eq
uip
me
nt.
At
Th
erm
o's
op
tio
n,
all
no
n-c
on
form
ing
pa
rts m
ust
be
re
turn
ed
to
Th
erm
o p
osta
ge
pa
id a
nd
re
pla
ce
me
nt
pa
rts a
re s
hip
pe
d F
OB
de
stin
atio
n.
TH
IS W
AR
RA
NT
Y I
S E
XC
LU
SIV
E A
ND
IN
LIE
U O
F A
LL
OT
HE
R W
AR
RA
NT
IES
, W
HE
TH
ER
WR
ITT
EN
, O
RA
L O
R
IMP
LIE
D.
NO
WA
RR
AN
TIE
S O
F M
ER
CH
AN
TA
BIL
ITY
OR
FIT
NE
SS
FO
R A
PA
RT
ICU
LA
R P
UR
PO
SE
SH
AL
L A
PP
LY
.
Th
erm
o s
ha
ll n
ot
be
lia
ble
fo
r a
ny in
dire
ct
or
co
nse
qu
en
tia
l d
am
ag
es in
clu
din
g,
with
ou
t lim
ita
tio
n,
da
ma
ge
s r
ela
tin
g t
o lo
st
pro
fits
or
loss o
f p
rod
ucts
.
Yo
ur
loca
l T
he
rmo
Sa
les O
ffic
e i
s r
ea
dy t
o h
elp
with
co
mp
reh
en
siv
e s
ite
pre
pa
ratio
n i
nfo
rma
tio
n b
efo
re y
ou
r e
qu
ipm
en
t
arr
ive
s.
Prin
ted
in
str
uctio
n m
an
ua
ls c
are
fully
de
tail
eq
uip
me
nt
insta
llatio
n,
op
era
tio
n a
nd
pre
ve
ntive
ma
inte
na
nce
.
Co
nta
ct
yo
ur
loca
l d
istr
ibu
tor
for
wa
rra
nty
in
form
atio
n.
We
’re
re
ad
y t
o a
nsw
er
yo
ur
qu
estio
ns o
n e
qu
ipm
en
t w
arr
an
ty,
op
er-
atio
n,
ma
inte
na
nce
, se
rvic
e a
nd
sp
ecia
l a
pp
lica
tio
n.
Rev.
4
2/0
9
ISO
9001
REGI
STER
ED
