operating and maintenance manual for type s flowmeterse).pdfoperating and maintenance manual for...
TRANSCRIPT
Operating and Maintenance Manual for Type S Flowmeters
M-101Rev. E
Type S Flowmeters: 5⁄8″,
3⁄4″ and 1″ with 157 & 600 Series Registers
TABLE OF CONTENTS
Installation & Operation ..................................................................................................... Page 1
Calibration ......................................................................................................................... Page 2
Register Maintenance ....................................................................................................... Page 4
Measuring Chamber Maintenance .................................................................................... Page 5
General Maintenance ........................................................................................................ Page 6
Troubleshooting ................................................................................................................. Page 7
TYPE S FLOWMETERS
INSTALLATION & OPERATIONFor correct installation of Type S Flowmeters, the experience of RSM is always available for your
assistance. Do not hesitate to call the nearest RSM authorized distributor.
MATERIALS OF CONSTRUCTION• MainCase:Bronze(ASTMB145Alloy844)Other metal components• NutatingDisk:GlassPhenolicLaminate (Rytonorequivalent)• DiaphragmandShafts:304SS• Gaskets:Viton“A”,MainCaseGasketsareKlingersilC4401
Before Installing the FlowmeterPlantheinstallationinsuchawayastoallowthestrainertobecoupleddirectlytotheinletofthe
flowmeter.Wherethisisnotpossible,anypipingbetweentheseunitsshouldbethoroughlycleanedout.Becarefultoallowroomforeasyremovalofthestrainerbasket.Where an air release valve is used, it should be installed in a position as close as possible to the
inletoftheflowmeter.Thiswillinsuretheremovalofthegreatestpossibleamountofairfromtheliquidbeforemetering.
Piping• Couplingsetsareprovidedwithall5/8-1”TypeSMetersforeaseininstallationandremovalduringstart-upsystemflushing.
Use seal tape or pipe cement on male threads only.Onopen-endedsystemsthepipingontheoutletsideoftheflowmetershouldbesoarrangedasto
eliminatethepossibilityofdrainingthemeasuringchamber.Whereatrapisnotpossible,ananti-drainvalve is recommended.
Experience has shown the need for a valved bypass connection to be installed around the flowme-ter.Thisarrangementpermitsproductflowintheeventthattheflowmetermustberemovedforrepair.
Allpipingconnectedtotheflowmetermustbefirmlysecuredandsupportedtopreventstrainontheflowmetercasing.
Orientation of Meter• Normallyhorizontal,lefttorighthandflow.
Air Vent LineWhereanairreleasevalveisused,theventpipeshouldbe3/4”insidediameterpipeortubing.Care
shouldbetakentopreventanypossibleobstructiontothefreeflowofairinthisline.Thislineshouldbeconnectedtoadripcollectingdrum,ortothesupplytankatlowerthanlinepressure.
When InstallingTheconnectingpipingshouldbefirmlysecuredtopreventstrainontheflowmetercasing.Care
shouldbetakenthatthereisprovisionforexpansionduetochangeintemperature.Allpipingontheinletsideoftheflowmetershouldbethoroughlycleaned.Wheneverpossible,place
aspoolintheplaceoftheflowmeterandflushalllinesthoroughlybeforetheflowmeterisinstalled.Themajority of service calls on new installations will be eliminated if these directions are followed.
Inletandoutletareclearlymarked;donotinstallbackwards.
INSTALLATION &OPERATION
MATERIALS OF CONSTRUCTION
Before InstallingThe Flowmeter
Piping
Orientation of Meter
Air Vent Line
When Installing
Page1
600 Series RegisterIfitisnecessarytochangethedirectioninwhichtheregisterwillfacewithrespecttothepipe,fol-
lowthesedirections:1.Loosentheclampsholdingtheregistertotheflowmeter.2.Turntheregistertothedesiredpositionandtightentheclamps.
Model 157 Register1.Removeregisterboxscrews.2.Removeregisterbox.3.Turntheregistertothedesiredpositionandreinstalltheregisterboxandscrews.4.Tightenregisterboxscrews.Openlinevalvesslowlyallowingliquidtograduallyenterflowmeter.Usecarenottooverspeedthe
flowmeter.Thismaycausedamageand/orprematurewearofinternalcomponents.
After InstallingPasssufficientliquidthroughtoclearthelineofair.Checktherateofflow.Itshouldnotexceedtheratedcapacityoftheflowmeter.Thebypassonthepumpshouldbesoregulatedastodeliverthemaximumpracticalrateofflow
fortheleastamountofpressure.Pressureontheflowmetershouldnotexceed150psi.Donottrytoincreasetherateofflowthroughundersizedpipesandfittingsbymeansofexcessivepressureswhichwillcauseleakinggasketsandcollapsedairreleasefloats.
Temperatureoftheliquidshouldnotexceedthatspecifiedfortheflowmeter.While all flowmeters are carefully calibrated at the factory it is recommended that flowmeters be
testedandifregistrationappearsinaccurate,see“Calibration”tolocatetrouble.
Cleaning The StrainerWhiletheinstallationisstillnew,thestrainershouldbecleanedveryfrequently.Afterthesystemhas
hadachancetobethoroughlywashedout,periodiccleaningisrecommended.
To Operate The FlowmeterToresetthe600SeriesRegistertozero,pushintheresethandleattherightsideoftheregister
androtateclockwise.
CALIBRATIONTestsofflowmetersshouldbeofsufficientquantity(volume)sothatthereadabilityoftheregister
allowsanaccuratetest.Minimumtestquantityistheamountmeteredinoneminuteatnormalflow.
Erratic RegistrationErraticregistrationisanindicationoftroubleinthesystem,usuallycausedbyairordirtinthemea-
suringchamber.Donottrytocorrectthisbyrecalibrationoftheflowmeter,butfirstcheckoverthepipingforairleaks,cleanthestrainerandthen,ifthetroublehasnotbeenfound,cleantheflowmeterasdirectedinthesection,“FlowmeterMeasuringChamber”.Ifthisdoesnotcorrectthetrouble,checkfor faulty installation.
Over-registrationisanindicationofair,whereasunder-registrationisgenerallycausedbydirtorpipescaleinthemeasuringchamber,ortheliquidbypassingtheflowmeterinsomemanner.
Consistent Over- or Under RegistrationWhentheflowmeterregistersconsistentlyeithermoreorlessthanisdelivered,thecalibrationmay
becorrectedinthefollowingmanner:
To Turn 600 Series Register
To Turn RegisterModel 157 Register
After Installing
Cleaning The Strainer
To Operate The Flowmeter
CALIBRATION
Erratic Registration
Consistent Over- orUnder-Registration
Page2
Model 157 Register:1. Removetheregisterfromtheflowmeter
byremovingscrewsholdingtheregisterto the flowmeter.
2. On the stuffing box spindle of theflowmeter will be found a gear knownasthe“StuffingBoxChangeGear.”Thisgear meshes with and drives a similargear known as the “Register ChangeGear”ontheregister.Notethenumbersstamped on these gears. Now refer totheChangeGearChart and locate thispairofgears.
3. If the flowmeter is under-registering(deliveringtoomuch),selectanewpairof gears farther up on the chart. If theflowmeter is over-registering (deliveringtoo little), select a new pair of gearsfartherdownonthechart.Therighthandcolumns show the difference in delivery between each successive pair to use;see example.
4. RemovetheoldChangeGearsandreplacewiththenewpair.(Newgearsmaybeobtainedfromthenearestauthorizeddistributor.)ToremovetheRegisterChangeGear,closethesplitendofthespindlewithapairofpliersandpulloffthegear.Afterslippingonthenewgear,spreadtheendsofthespindleslightly.TheStuffingBoxChangeGearshouldpulloffeasilyandthenewoneshouldslideonwithoutforcing.Do not spread the ends of the stuffing box spindle.
5. Reassembletheflowmeter,runafewgallonsthroughandretest.
600 Series Register
The600SeriesRegisterChangeGearsarelocatedinsidetheregister,directlybeneathanaccessplateontopoftheregister.Removethetwoscrewsontheplate,thecoverplate,andthegasket.Replacethegearsasabove.NOTE: Thestuffingboxandregisterchangegearsareidentifiedby“S”and“R”stampedonthegearplate.Spreadtheendsofbothspindlesandreassemblethecoverplate.Runafewgallonsthroughandretest.
Example: Suppose,forinstance,thataflowmeterhasan18-toothregisterchangegear,anda19-toothstuffingboxgearandthatwhen50gallonshavebeenregisteredonthedial,theflowmeterhasactuallypassed80cubicinchesmorethan50gallons.Thisis.69%under-registration.
Changingthegearstothe34-36combinationwouldcutdownthedeliveryby.32%cubicinchessothattheover-deliverywouldthenbeonly.37%.Goingtothenextcombination,33-35,wouldcutdownthedelivery.17%more,andthenext,32-34,still.18%more,makingatotalof.32%+.17%+.18%or.67%.
Inthisinstance,therefore,a32-toothgearshouldbeusedontheregisteranda34-toothgearon
Model 157 Register
600 Series Register
Page3
SAMPLE CHANGE GEAR CHART
TO D
ELIV
ER L
ESS
(INCR
EASE
REG
ISTR
ATIO
N)
TO D
ELIV
ER M
ORE
(DEC
REAS
E RE
GIST
RATI
ON)
CHANGE CU IN % in 50 US GAL
27 31 24 28 23 27 21 24 20 23 18 21 18 21 17 20 32 37 27 31 24 28 23 27 21 24 19 22 18 21 16 19 15 17 15 17 12 14 11 13 12 14 20 23 26 30
REG STUFF GEAR BOX GEAR
26 28 27 29 28 30 29 31 30 32 31 33 32 34 33 35 34 36 18 19 19 20 20 21 21 22 22 23 23 24 24 25 25 26 26 27 27 28 28 29 29 30 30 31 32 33 35 36
This chart is reproduced for illustration purposes only. If the gears on your flowmeter do not correspond with those on the chart, contact your nearest RSM authorized distributor, giving flowmeter size, register type, dial capacity and unit measure.
Figure 1. Register Change Gears
MAINTENANCERegister
Registerpartsaresuchthatonlyminorfieldrepairsareadvisable.Whenaregister is inneedofextensiveserviceorrepairotherthanthatforwhichinstructionisgivenhere,itisrecommendedthattheregisterbereturnedtothenearestRSMauthorizeddistributorforrepair.Ifareplacementregisterisneeded,besureandspecifytheexactmodeloftheregisterreplacedaswellasthechangegearsintheregister.
Model 157 Register — To Clean The RegisterToremoveregisterfromflowmeter,removethescrewsholdingregistertotheflowmeter.
1.Removethemechanismfromitshousing.
2.Blowoutthedirtwithcompressedair.Donotusebrushes.
3.Washthedialfacewithsoapandwater.Donotusegasolineorkerosene.Incasethedialonlyistobewashed,itisnotnecessarytoremovethemechanismfromitshousing.
4.Replacethemechanisminitshousing.
600 Series Registers — Repair of Register
Registerpartsaresuchthatonlyminorfieldrepairsareadvisable.Whenaregister is inneedofrepairorserviceotherthanthatforwhichinstructionisgivenhere,itshouldbereturnedtotheRSMauthorizeddistributor.Maintenanceoftheregisterislimitedtocleaningandtothoseoperationswhichwilllocatethesourcesofpossibletroublewithoutremovingtheregisterfromtheflowmeter.
Whenorderingareplacementregister,specifytheregistermodel,codeandserialnumber(stampedonregisternameplate).
Whenreplacingtheregister,removethechangegearsfromtheoldregisterandtransferthemtothenewregister.(Thiswillmaintainoriginalflowmetercalibration.)
CleaningRegularlycleanthehousingtoremoveaccumulationsofdirtandgrease,orchemicaldeposits.CAUTION: Useonlymilddetergentsandwatertocleantheregisterwindow.Donotuseabrasives
or spray type cleaners, or solvents and thinners which may soften or cloud the plastic window.
To Remove Housing From Mechanism
1. Removetwoscrewsandaccessplateontopofregister.
2. Pushinresetknobandpartiallyresettoretainshaftinresetposition.
3. Removeresetknobscrewandfourscrewsonbottomplate.
4. Pulloutonresetknobtodisengageknobfromshaft.
5. Loosenandslidehousingtoknobendandremove.Cautionisadvisedinremovalofhousingtoavoidscrapingvisiblewheels.
6. Reset shaft can be turned to normal position.
To Remove Register From FlowmeterRemovethetwoclampsholdingtheregisteradaptertotheflowmeter,andliftofftheregister.
MAINTENANCERegister
Model 157 RegisterTo Clean The Register
600 Series RegistersRepair of Register
Cleaning
To Remove HousingFrom Mechanism
To Remove RegisterFrom Flowmeter
Page4
To Reinstall RegisterTo Flowmeter
MEASURING CHAMBERMAINTENANCETo Remove and Disassemble
To ReassembleChamber In TheFlowmeter
Page5
To Reinstall Register To FlowmeterCarefullyaligninputshaftofregisterwiththestarconnectionongeartrainofflowmeterandinstall
thetworegisterclamps.
MEASURING CHAMBER MAINTENANCETo Remove and Disassemble
Thisoperationisnotdifficultandmaybeperformedbyanycompetentmechanic.Nospecialtoolsarerequired.Notroubleneedbeexpectedifthesefewsimple,butimportantdirectionsarefollowed.Donotopentheflowmeteruntilyouhavecheckedoverallotherpossiblecausesoferraticregistration.1. Prepareacleansurfaceonwhichtoplacethepartsastheyareremoved.Theparts,thoughsturdy,
are machined to close tolerance and should be handled with care. Have a replacement gasket ready beforeopeningtheflowmeter.
2. Remove the flowmeter cover.3. Removethemeasuringchamberfrom
theflowmetercasing.Ifthechambersticks, it may be necessary to tapmaincase to free it — insert maincase bolts in holes and hit head of bolt. Remove thrust roller insert plate or channel. Remove the three screws holdingthechambertogetherandthethrust roller insert plate or channel.
4. Pryopen the chamberwith apieceof hard wood inserted into the inlet port. Be careful not to damage thedisc or to scratch or nick any partof the chamber. Remove the upper halfofthechamber.Becarefulnottoscratchornickanypartofthechamber.
5. Liftoutthediscpistonbyitsspindle.6. The chamber is now completely disassembled. The parts may be most easily cleaned of scale, etc.,
bymeansofagood,coarse,stiffbristle(notwire)brushandgasolineorsuitablecleaningagent.Allforeignmattermayberemovedinthismanner.Do not use abrasives, such as emery cloth or sand paper.
To Reassemble Chamber In The Flowmeter
1. Besurethatthejointsarecleanwherethetwohalvesfittogether.
2. See that the thrust roller is perfectly free in the disc.
3. Holdthelowerhalfofthemeasuringchamberinthelefthandwiththediaphragmtowardstheleft. Hold the disc near the thrust roller hole, spindle up. The disc will then drop into position easilyifheldataslightangle.
4. Placethethrustrollerinposition.
5. Placetheupperhalfontop,makingsurethatthediaphragmfitsinitsslot.Insertthethrustrollerbearingplateorchannel.Do not use a hammer.
6. Operatethepistonslowly;itshouldmovefreelywithoutany“catch.”
7. Cleanoutthecasing.
8. Liftthechamberbythepistonspindleandloweritintopositioninthemaincasing.Thetopofthechambershouldbelevelwiththegasketseat.Ifitisnot,pressingbyhandshouldmakeitso.
9. Whenreplacingthecover,firstinspectthegasketandthensetthearmofthegeartrainsothatit will not come down on the piston spindle.
10. Makesurethatthecoverisdownonitsseatbeforetighteningthebolts.
Figure 2. Measuring Chamber Components
ChamberUpper Half
ChamberLower Half
Disk
ThrustRoller
ThrustRoller
Channel
Page6
To Repair Leaking“U” Cup SealStuffing Box
To Replace The Gear Train
GENERALMAINTENANCE
Sediment
Air
Testing
Storage
To Repair Leaking “U” Cup Seal Stuffing Box
1.Removetheregister(seepage4).2.Removethestarconnection(1),usingaNo.8Allenwrench.3. Removethestuffingboxnut(2).4.Removeshaftseal(3).Inspectupperendofspindletobesure
itisfreeofnicksorburrswhichmightdamagethenewshaftseal when it is placed on spindle.
5.Replaceshaftsealwithnewpart.Besureexpander(4)isinpositionbeforeinsertingnewseal.
6.Assemblenutandtightendownalltheway.
To Replace The Gear Train
1.Removetheregister(seepage4).2.Removethestarconnection(1),usingaNo.8Allenwrench.3. Remove the flowmeter cover, with gear train assembly at-
tached.Keepdirtoutoftheflowmeterandavoidinjurytothe covergasket.
4.Unscrewthestuffingboxnut(2).5.Removeclampnut(6);geartrainassemblycanberemovedfromundersideofflowmetercover.6.Install replacementgear trainmakingsurethat thereplacementhasthesamereduction.*Note:
Pack gear train and housing full with non-water soluble grease on enclosed type.7.Whenreplacingthecover,firstinspectthegasketandthensetthearmofthegeartrainsothatit
will not come down on the piston spindle.
GENERAL MAINTENANCE In the maintenance of the accuracy of RSM Type S Flowmeters, little is necessaryother than to see that the proper conditions of operation are preserved. These conditions, oncetheflowmeterhasbeenproperlyinstalled,consistmerelyinguardingagainstforeignmatter,suchassedimentandair,enteringthemeasuringchamberandexcessiveheatfromdamagingthediscpiston.Also,donotpermitflowmetertobeoperatedatrateofflowgreaterorlessthanrecommended.
Sediment Theliquidpassingthroughthemeasuringchambermustbefreeofgritandotherformsofsedimentinordertopreventunnecessaryfrictionandthescoringofthediscandchamber.Evidenceoftroublefromthissourcewillbefoundintheunder-registrationoftheflowmeter.Periodiccleaningofthestrainerattheinletoftheflowmeterwillhelptoinsureagainsttrouble.Inthedesignofthisunit,particularcarehasbeentakentomakethisoperationassimpleas possible.
Air Beinganinstrumentwhichmeasuresbyvolume,aflowmeterwillrecordthepassageofairaswellastheliquidbeingmeasured.Over-registrationistheresult.Theairreleaseunitisintendedtopreventthisconditionbyventingthisairbeforeitpassesthroughthemeasuringchamber.
Most compact air release units, due to the limited available space, will not separate an emulsionorairandliquid.Eventankairreleaseunitswillnotefficientlyseparateairfromviscousliquids.
Testing Instructionforcalibrationwillbefoundunder“Calibration”onpage2.
Storage Beforeaflowmeterisputintostorage,themeasuringchambermustbeflushedwithsuitableliquidwhichwillnotdamagethedisc.
Figure 3. Stuffing Box
TROUBLESHOOTING
Page7
TROUBLESHOOTING
1. Register Not Working When Liquid is Flowing Bypassaroundflowmeternotshutoff. Shearedkeyon“changegear”duetostuckregisterortoreverseflowthroughtheflowmeter. Registerinneedofrepair.Seepage4. Discinmeasuringchamberbroken.
2. Leakage At The Stuffing Box Looseorwornstuffingboxnutorwornspindle.Seepage6. BadU-Cupseal.
3. Chronic Leakage At The Main Case Gasket Brokengasketorloosebolts. Excessivelineorshockpressure.
4. Reduction In The Rate or Complete Stoppage of Discharge Ongravityorhydraulicsystemsoronpumpsystems(pumplaboring): Blockedstrainerduetosedimentorfrost. Discinflowmeterstuckduetodirt(checkstrainerandcleanmeasuringchamber).Seepages
1and5. Onpumpsystems(pumpnotlaboring): Pumpbypassstuckopen. WornPump.
5. Over-Registration — Erratic Onpumpsystems: Airreleaseorairventpluggedallowingairtopassthroughtheflowmeter. Leaksinthesuctionlinesuchasatvalves,valvestems,pumppacking,orflangegasketscaus-
inganemulsionofairandliquid. Airpocketsinclosed-endpipinginthesuctionline. Excessivesuctioncausedbyvalvesonlypartiallyopen,suctionpipingtoosmallorsuctionlifttoo
great.
6. Under-Registration — Erratic Dirtinthemeasuringchamber. Badlywornmeasuringchamber. Maincasingdistortedordamaged. Leakagearoundtheflowmeterduetopartlyopenvalve. Damagedinternalparts.
7. Consistent Over- or Under-Registration Flowmeterinneedofcalibration.Seepage2.
8. Liquid Leaking Out The Air Release Vent Worn,damagedordefectivevalveunit.
27⁄8
115⁄16
G
C AB
D
E
45⁄1657⁄8
15⁄8
31⁄2
51⁄2
67⁄8
7⁄8
F
F
E
ACBG
D
ALLOW 2 INCHCLEARANCE FORREMOVING REGISTER
U.S.A./International1310 Emerald RoadGreenwood, SC 29646-9558Tel.: Toll-Free (800) 833-3357 (864) 223-1212Fax: (864) 223-0341
© 2013 Red Seal Measurement 500 01/13
Specifications subject to change without prior notification.
91/4
2
31/2
15/8
57/845/16
1-111/2 npt
211/16 103/4
53/8
2
71/4
51/2
41/4 25/8
71/2
7/8