Air Dimensions Incorporated Dia-Vac R Series User manual

Dia‐Vac®PumpOperatingInstructions
Elevated/ExtendedR‐SeriesPumpwithExplosionProofMotor
AirDimensionsIncorporated
1371WestNewportCenterDrive,Suite#101
DeerfieldBeach,FL,33442
800.423.6464/954.428.7333ph.
954.360.0987fax
[email protected]
www.airdimensions.com


2  
GeneralOperatingConditions
TheR‐SeriesDia‐Vac®explosionproofmotorsutilizedbytheR‐Seriessingleanddoubleheadpumpsare
1/6HP,115V/230V,50/60HzsinglephaseandareULandCSAlistedClassI,DivisionI,GroupB,CandD,
andClassII,GroupFandG.ForQuadandEightheadDia‐Vac®pumps,themotormayrangefrom1/2‐1
HP,andareULandCSAlistedClassI,DivisionI,GroupC,andD,andClassII,GroupF,andG.

Dia‐Vac®Pumpsareintendedforusewithgasesonly,donotusethisproductforliquids.Theelevated
andextendedpumpsareforuseinhazardousareaswhereheatedheadscannotbeusedtoprevent
condensationbuildupinthepump.Thesepumpsaredesignedtohaveheadorheadsmountedinaheated
enclosuretopreventcondensationofvaporswithinthepumphead.Theplateofeitherofthesepumps
canholdtheentireweightofthepump.

TheDia‐Vac®Pumpnormallyrunsat130to150°F.Itisnotanindicationoftroubleiftheoutersurfaces
ofthepumpormotorarehottothetouch.

TheDia‐Vac®Pumpnormallyrunsquietly,especiallywhenbothpressureandvacuumportsareconnected
intoaclosedsystem.Anobviousknockorrattlecouldindicateaproblem.Checkthrough
"Troubleshooting"withparticularattentiontothetightnessofallscrewfasteners.

Ambienttemperatureofthispumpshouldnotexceed60°C/140°F.Thepumpmusthaveadequate
ventilationand/orcoolingtorunproperly.
Safety
Beforerunningthepump,ensurethatitisproperlyratedfortheenvironmentinwhichitislocated.The
StandardDia‐Vac®explosionproofmotorsutilizedbythestandardsingleanddoubleheadpumpsareUL
andCSAlistedClassI,DivisionI,GroupB,C,andD,andClassII,GroupFandG.

AllsystemcomponentsconnectedtotheDia‐Vac®Pumpmustbecapableofhandlingthemaximum
pressureofthepump.

Ensurethatsafetyregulationsareobservedwhenconnectingthepumptotheelectricsupply.The
connectionsaretobemadeinsuchawaythatcontactbyanyobjectorpersonwithalivewireis
impossible.Theconnectionsmustbeprotectedsonoarcingorsparksarepossible.Thesupplyvoltage
mustnotvarymorethan±10%ofthevoltageshownonthemotorplate.

Allproperprecautionsforthecontrolledvapormustbeobserved,andfollowed.Properwettedmaterials
forhandlingcorrosive,hot,and/orreactivegasesmustbeused.

ThisDia‐Vac®Pumpisthermallyprotected;whenthetemperatureofthepumpexceedsthemaximum
operatingtemperature,pumpoperationwillbeinterruptedbythethermalswitch.Thepumpwillrestart
automaticallyonceitcoolsdown.Besuretotakenecessaryprecautionstoavoidinjuryduringrestart.

Disassemblyofthepumpormotorbeyondwhatisdetailedintheservicingsectionbelowmayresultin
thelossofthepump’shazardousareacertificationandishighlydiscouraged.
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3  
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Operation
NooilingorotherlubricationisnecessarywithaDia‐Vac®pump.

Ifthegasstreamhasahighlevelofparticulatematter,afiltershouldbeinstalledbeforethepump.Ifthe
gasstreamhasahighlevelofliquidmatter,amembraneseparatorshouldbeinstalledbeforethepump.
Thisshouldbeusedinconjunctionwithbestpracticesforpumpinstallationincludingmountingthepump
headsothatthedischargeportfacestowardtheground.Keepinmindthatthepumpheadcanberotated
inanydirectiononthehousing.Thegaswillalwaysflowinthedirectionofthearrowsontopofthehead.

Theelevatedandextendedpumpsareforuseinhazardousareaswhereheatedheadscannotbeusedto
preventcondensationbuildupinthepump.Thesepumpsaredesignedtohaveheadorheadsmounted
inaheatedenclosuretopreventcondensationofvaporswithinthepumphead.Theplateofeitherof
thesepumpscanholdtheentireweightofthepump.

Thispumpcanbemountedinanyposition.Ifthehousingneedstoberotatedformountingpurposes,
thatcanbedoneattheADIfacility.

Donotstartthepumpagainstpressureorvacuum.Forapplicationsthatmuststartunderpressureor
vacuum,contactADIandasuitablemotorwillbeselected.

Runningampsarelistedonthenameplateofthemotor.Apumprunningatasubstantiallyhighercurrent
thanshownonthemotorplateindicatesaproblem,pleaseseesection“Troubleshooting”below.Please
notethatthecurrentdrawatthestartupofthepumpwillbethreetofourtimesthenormalrunning
amps.
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Forhighpressureapplications,outletpressuresabove15psig,pleaseconsultanADIrepresentativefor
propermotorsizing.

Thepumpisdesignedforatmosphericpressureorvacuumontheinlet.Forapplicationswithinlet
pressuregreaterthan0psig;contactADIandasuitablepumpwillbeselected.
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Thediaphragm,valvediscs,sealingwasher,andgasketaretheonlyconsumablepartsofthepump.The
degreeofusageandconditionofoperatingtemperaturesorpressurewilldeterminetherateof
replacementofpartorparts.Forheavyloads(25‐75PSI)andconstantoperationthediaphragmshould
beinspectedatleasteverysixmonths.Forlighterloads(0‐15PSIoruptomaximumvacuum)orpumps
withreducedeccentricthediaphragmmayoperatesuccessfullyforayearormore.Thecorrosivecontent
ofthegasmediabeingpumpedcanaffecttherecommendedinspectionandreplacementcycleofthe
diaphragm.
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TheminimumperformanceacceptableofasingleheadofanR‐seriespumpisshowninthetablebelow.
Pumpsoperatingat50Hzhavea17percentlowerflowratethantheir60Hzcounterparts.Tocheck
pumpingefficiency,employsuitablydampedgaugesconnectedsoastodead‐headeitherpressureor
vacuum.

4  


NOTE:Checkeachseparately,oneortheotherportmustbeopenduringthistest.Use0‐100PSIpressure
gaugeand0‐30inchHgvacuumgauge,(ormercurymanometer.)

Troubleshooting
Thissectionlistscommonproblemsthatoccur,possiblecausesandthemostcommonfixes.Iftheproblem
persists,thepumpmayrequireinspectionattheADIfacility.Tohaveyourpumpinspectedandrepaired
attheADIfacilitypleasefollowtheinstructionsontheADIwebsitelocatedat
http://www.airdimensions.com/service/rma/.
Eccentric
R27x 27 (22)
R25x 25 (21)
R22x 26 (22)
R20x 22 (18)
R18x 19 (16)
R15x 17 (14)
R12x 14 (12)
R10x 12 (10)
R08x 11 (9)
R06x 8 (7) 7
15
13
11
21.5
20
17
7
4
24
23.5
23
17
13
8
46
36
27
Minimum
LPM Minimum In Hg
60
52
Minimum Performance Requirements
Max Press Open Flow Ult Vac
Minimum
PSIG
Standard Product 60Hz (50 Hz)
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5  
Pumpdrawsexcessivelyhighcurrent
Motorisoverloaded
Turnoffpump
Removeallpressureandvacuumconditions
Restartandtestatatmosphericpressure
Powerinputisincorrect
Checkmotorwiringi.e.115Vvs230Vwiring
Checkpowersource
oPumpsareonlyratedfor±10%voltageonnameplate
Loworzeroflow
Connectionorsamplelineblocked
Removeblockage
Liquidorforeigndebrishascollectedinthehead
Cleanoutthehead,seesection“Servicing”
Placepumpoutletfacingdownward
Diaphragms,valves,orgasketareworn
Seesection“Servicing”
Pumpisrattlingorknocking
Connectingrodboltordiaphragmplatescrewareundertorqued
Seesection“Servicing”fortorquingspecifications
Connectingrodcapistooclosetoonesideofhousing
Usingascrewdriverlightlyprythecapawayfromthesideofthehousing
andcenter.AcenteringtoolisavailableforpurchaseatADI.
Servicing
ListedbelowarethetwopredominanttypesofmaintenancetypicalforDia‐Vac®Pumps,the
servicingoftheconsumableparts(diaphragm,valvediscs,gasket,andTeflon®washer),andtheservicing
oftheconnectingrod.Forvideoinstructionsonservicingtheheadanddiaphragmvisit
http://www.airdimensions.com/service/videos/.
DisassemblyofHeadSectionandDiaphragm
Removeheadassemblybyunscrewingthefourheadbolts.Aflat‐bladedscrewdrivermaybeneededto
gentlyprytheheadfreeoftheservicediaphragm.**IftheheadshaveTeflon®coatingusecautionnotto
scratchthesurface.

Thevalvebodycanthenberemovedbyunscrewingthetwosmallerscrews(alsoaccessibleonthetopof
theheadsection).Thispartmaybefreedbygentlytappingonthesetwoscrewsaftertheyhavebeen
loosenedaboutthreeorfourturns.Whenthevalvebodyisremoved,checkallinternalsurfacesforany
accumulationofdirt.Thetwovalvediscscanbewipedcleanandreplacedaslongastheyappear
unaffectedbyusage.Thevalvegasketcanbeeasilyremovedandshouldbeinspected.Asamatterofgood