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Troubleshooting guide
Thispumphasbeendesignedfordependable
useandlonglife.Ifsomethingshouldgowrong,
however,thefollowingguidewillhelpyougetthe
pumpbackintoserviceasquicklyaspossible.
Ifdisassemblyofthepumpisrequired,please
checkyourwarranty.Thewarrantymaybevoided
bymisuseorcustomertamperingthatresultsin
thepumpbeinginoperable.
Failure to start
Checklinevoltage.Robinairpumpsaredesigned
tostartat+10%linevoltage(loaded)at0
o
C.At
extremes,however,switchingbetweenthestart
andrunwindingsmayoccur.Whenstartingthe
pumpincoldtemperatures,verifytheIso-Valve
andinletportareopentofreeair.
Oilleakage
1.Verifytheoilisnotaresidualaccumulation
fromspillage,etc.
2.Ifleakageexists,themodulecovergasket
ortheshaftsealmayneedreplacing.
Followtheinstructionssuppliedwiththe
sealreplacementkit,partnumber15367.If
leakageexistsintheareaofthedrainplug,
resealtheplugusingacommercialpipe
threadsealer.
Failure to pull a good vacuum
1.VerifytheIso-Valveonthepumpisinthe
OPENposition,andthegasballastknobis
tightlysealed.
2.Verifythevacuumgaugeandallconnections
areingoodconditonandleak-free.Conrm
leakagebymonitoringthevacuumwitha
thermistorgaugewhileapplyingvacuum
pumpoilatconnectionsorsuspectedleak
points.Vacuumwillimprovebrieywhilethe
oilissealingtheleak.
3.Besurethepumpoilisclean.Abadly
contaminatedpumpmayrequireseveraloil
ushes.SeeOILCHANGEPROCEDURE.
4.Verifytheoilisatthecorrectlevel.For
maximumpumpoperation,theoilmustbe
evenwiththeOILLEVELlineonthesight
glasswhenthepumpisrunning.SeeOIL
CHANGEPROCEDURE.Donotoverll.
Operatingtemperaturescausetheoilto
expand,soitwillappearatahigherlevelthan
whenthepumpisnotrunning.Tocheckthe
oillevel,startthepumpwiththeinletcapped.
Checktheoillevelinthesightglass.Addoilif
necessary.
Pump Specications
Model 15401
FrequencyRange.................................... 50-60Hz
FreeAirDisplacement.........................4cfm/60Hz
..................................................94l/m@50Hz
................................................ 113l/m@60Hz
Stages..................................................................2
MotorSpeed.............................1425rpm@50Hz
.............................................1725rpm@60Hz
VoltageRange......................................110V–115V
........................................................220V–250V
FactoryMicronRating.......................... 15microns
ApproximateOilCapacity............................400ml
Weight........................................................... 13kg
Width....................................................... 14.29cm
Height........................................................24.6cm
Length...........................................................40cm
Intake....................................
1
/4"and
1
/2"SAEMFL
Min.StartingTemp.(at90%voltage)............... 0
o
C
MotorSize............0.25kW(
1
/3HP)CapacitorStart
OperatingTemp..............................................68
o
C
Models 15601/15603/15605
FrequencyRange.................................... 50-60Hz
FreeAirDisplacement.........................6cfm/60Hz
................................................142l/m@50Hz
................................................170l/m@60Hz
Stages..................................................................2
MotorSpeed.............................1425rpm@50Hz
.............................................1725rpm@60Hz
VoltageRange......................................110V–115V
........................................................220V–250V
FactoryMicronRating.......................... 15microns
ApproximateOilCapacity............................400ml
Weight........................................................... 13kg
Width....................................................... 14.29cm
Height........................................................24.6cm
Length...........................................................42cm
Intake.............................
1
/4",
3
/8",and
1
/2"SAEMFL
Min.StartingTemp.(at90%voltage)............... 0
o
C
MotorSize...........0.25kW(
1
/3HP)CapacitorStart
OperatingTemp..............................................68
o
C
Notes:
1. All motors are internally protected (automatic
reset).
2. Operating temperatures are typical for normal
operating conditions.
3. Model 15603 has a bipolar side grounded plug.
4. Models 15405 & 15605 have Australian plugs.
Because of ongoing product improvements, we reserve the right to
change design, specications, or materials without notice.
Operating Manual
6