EPA 608 PRACTICE EXAM TYPE 3
TheRmaximumRtestRpressureRforRleakRtestingRaRlow-pressureRcentrifugalRchillerRisR-
RCORRECTRANSWER10Rpsig
ExcessiveRoperationRofRaRpurgeRsystemRmeansR-
RCORRECTRANSWERTheRsystemRhasRaRleakRonRtheRsub-ambientRpressureRsideRofRtheRsystem
ForRaRcommercialRrefrigerationRsystemRwithRaRchargeRofR50RpoundsRorRmoreRrefrigerant,RaRsubstan
tialR(orRthreshold)RweekRrateRwillRbeRreducedRtoR________RafterRJanuaryR1,R2019.R-
RCORRECTRANSWER20%
ForRaRcomfortRcoolingRsystemRwithRaRchargeRofR50RpoundsRorRmoreRofRrefrigerant,RaRsubstantialR(or
Rthreshold)RLeakRrateRwillRbeRreducedRtoR_________RafterRJanuaryR1,R2019.R-
RCORRECTRANSWER10%
AccordingRtoRtheREPA,RwhenRallRtheRR-123RliquidRhasRbeenRremovedRfromRanRaverageR350RtonRR-
123RchillerRandRtheRsystemRvaporRpressureRisR0Rpsig,RtheRsystemRcontainsR-
RCORRECTRANSWER100RpoundsRofRrefrigerantRinRtheRsystem
WhenRworkingRwithRlowRpressureRsystems,RtheRhigh-
pressureRcutRoffRshouldRbeRsetRtoRnoRmoreRthanR_________RtoRavoidRdamagingRtheRsystemRorRacti
vatingRtheRpressureRblowRoffRdeviceR(ruptureRdisk).R-RCORRECTRANSWER10Rpsig
TheRruptureRdiscsRonRtheRlowRpressureRchillerRandRonRtheRrecoveryRtankRshouldRrelieveRatR______
____RtoRpreventRdamageRtoRtheRsystemRduringRrefrigerantRtransferRintoRorRoutRofRtheRsystem.R-
RCORRECTRANSWER15Rpsig
IfRpossible,RtheRtemperatureRofRtheRequipmentRroomRwhereRtheRchillerRisRlocatedR-
RCORRECTRANSWERShouldRbeRincreasedRtoRspeedRrecovery
, WhenRpossible,RoilRinRtheRchillerRshouldRbeRheatedRbecauseR-
RCORRECTRANSWERLessRrefrigerantRwillRbeRsolubleRand/orRtrappedRinRtheRoilRatRhigherRtemperatu
res
ToRpreventRfreezing,RwhenRrechargingRanRevacuatedRwaterRcooledRchillerRsystemRwithRR-
123,RfirstRchargeRwithRaRvaporR20RpressureRofRatRleastR-RCORRECTRANSWER20RinRHgRvacuum
WhenRrechargingRaRchiller,RrefrigerantRisRfirstRaddedRasRaRvaporRfollowedRbyRaRliquidRrefrigerantRtoR
avoidR-RCORRECTRANSWERFreezingRofRtheRwaterRinRtheRchillerRbarrels
ReplacingR_________RisRalwaysRconsideredRaR"majorRmaintenance,Rservice,RorRrepair"?R-
RCORRECTRANSWER1.)AnRevaporatorR2.)RcondenserR3.)compressor
LowRpressureRsystemsRmustRbeRevacuatedRtoR_________RbeforeRbeingRdiscarded.R-
RCORRECTRANSWER25RmmRofRHgRabsolute
EveryRrecoveryRandRrecyclingRunitRmustRbeR-
RCORRECTRANSWERLabeledRasRcertifiedRtoRmeetREPA'sRrequirements
WhenRdisposingRaRsystemRwithRaRnormalRchargeRofRmoreRthanR5RpoundsRandRlessRthanR50Rpounds,
RtheRdisposalRrecordRmustRbeRkeptRbyRtheRtechnicianRforR-RCORRECTRANSWER3Ryears
AfterRreachingRtheRrequiredRrecoveryRvacuum,R-
RCORRECTRANSWERWaitRaRfewRminutesRtoRseeRifRtheRsystemRpressureRrisesRbeforeRopeningRtheRsy
stemRupRforRrepairs
WhenRdoesRtheREPARallowRyouRtoRnotRevacuateRtoRtheRprescribedRlevel?R-
RCORRECTRANSWERWhenRleaksRinRtheRapplianceRmakeRevacuationRtoRtheRprescribeRlevelRunattain
able
TheRmaximumRtestRpressureRforRleakRtestingRaRlow-pressureRcentrifugalRchillerRisR-
RCORRECTRANSWER10Rpsig
ExcessiveRoperationRofRaRpurgeRsystemRmeansR-
RCORRECTRANSWERTheRsystemRhasRaRleakRonRtheRsub-ambientRpressureRsideRofRtheRsystem
ForRaRcommercialRrefrigerationRsystemRwithRaRchargeRofR50RpoundsRorRmoreRrefrigerant,RaRsubstan
tialR(orRthreshold)RweekRrateRwillRbeRreducedRtoR________RafterRJanuaryR1,R2019.R-
RCORRECTRANSWER20%
ForRaRcomfortRcoolingRsystemRwithRaRchargeRofR50RpoundsRorRmoreRofRrefrigerant,RaRsubstantialR(or
Rthreshold)RLeakRrateRwillRbeRreducedRtoR_________RafterRJanuaryR1,R2019.R-
RCORRECTRANSWER10%
AccordingRtoRtheREPA,RwhenRallRtheRR-123RliquidRhasRbeenRremovedRfromRanRaverageR350RtonRR-
123RchillerRandRtheRsystemRvaporRpressureRisR0Rpsig,RtheRsystemRcontainsR-
RCORRECTRANSWER100RpoundsRofRrefrigerantRinRtheRsystem
WhenRworkingRwithRlowRpressureRsystems,RtheRhigh-
pressureRcutRoffRshouldRbeRsetRtoRnoRmoreRthanR_________RtoRavoidRdamagingRtheRsystemRorRacti
vatingRtheRpressureRblowRoffRdeviceR(ruptureRdisk).R-RCORRECTRANSWER10Rpsig
TheRruptureRdiscsRonRtheRlowRpressureRchillerRandRonRtheRrecoveryRtankRshouldRrelieveRatR______
____RtoRpreventRdamageRtoRtheRsystemRduringRrefrigerantRtransferRintoRorRoutRofRtheRsystem.R-
RCORRECTRANSWER15Rpsig
IfRpossible,RtheRtemperatureRofRtheRequipmentRroomRwhereRtheRchillerRisRlocatedR-
RCORRECTRANSWERShouldRbeRincreasedRtoRspeedRrecovery
, WhenRpossible,RoilRinRtheRchillerRshouldRbeRheatedRbecauseR-
RCORRECTRANSWERLessRrefrigerantRwillRbeRsolubleRand/orRtrappedRinRtheRoilRatRhigherRtemperatu
res
ToRpreventRfreezing,RwhenRrechargingRanRevacuatedRwaterRcooledRchillerRsystemRwithRR-
123,RfirstRchargeRwithRaRvaporR20RpressureRofRatRleastR-RCORRECTRANSWER20RinRHgRvacuum
WhenRrechargingRaRchiller,RrefrigerantRisRfirstRaddedRasRaRvaporRfollowedRbyRaRliquidRrefrigerantRtoR
avoidR-RCORRECTRANSWERFreezingRofRtheRwaterRinRtheRchillerRbarrels
ReplacingR_________RisRalwaysRconsideredRaR"majorRmaintenance,Rservice,RorRrepair"?R-
RCORRECTRANSWER1.)AnRevaporatorR2.)RcondenserR3.)compressor
LowRpressureRsystemsRmustRbeRevacuatedRtoR_________RbeforeRbeingRdiscarded.R-
RCORRECTRANSWER25RmmRofRHgRabsolute
EveryRrecoveryRandRrecyclingRunitRmustRbeR-
RCORRECTRANSWERLabeledRasRcertifiedRtoRmeetREPA'sRrequirements
WhenRdisposingRaRsystemRwithRaRnormalRchargeRofRmoreRthanR5RpoundsRandRlessRthanR50Rpounds,
RtheRdisposalRrecordRmustRbeRkeptRbyRtheRtechnicianRforR-RCORRECTRANSWER3Ryears
AfterRreachingRtheRrequiredRrecoveryRvacuum,R-
RCORRECTRANSWERWaitRaRfewRminutesRtoRseeRifRtheRsystemRpressureRrisesRbeforeRopeningRtheRsy
stemRupRforRrepairs
WhenRdoesRtheREPARallowRyouRtoRnotRevacuateRtoRtheRprescribedRlevel?R-
RCORRECTRANSWERWhenRleaksRinRtheRapplianceRmakeRevacuationRtoRtheRprescribeRlevelRunattain
able