User Manual

2
Introduction
RobinairNo.34988isusedonR-134avehiclesandisdesignedtobecompatiblewithexisting
serviceequipmentandstandardserviceprocedures.ModelNo.34988isaUL-listed,single-
passsystemthatmeetsSAEspecicationsforrecycledrefrigerant.FollowtheSAE-J2211
recommendedserviceprocedureforthecontainmentofR-134a.
Theunitincludesa1.5cfm(42l/m)Robinairhighvacuumpumpforfast,thoroughevacuation.
ThecompressorpullstheA/Csystemto0psig,thenworksinserieswiththevacuumpump
toachievehighlyefcientrecoveryandimmediaterecharge.Ifthesystemisnotopenedfor
service,thereisnoneedtopulladditionalvacuum.Ifthesystemisopenedforservice,use
theunit’svacuumcycletoremoveairandmoisturefromtheA/Csystem.(Werecommend
aminimum15-minutevacuum,orfollowthevehiclemanufacturer’sspecs.)Note: R-134a
systems require special oils. Refer to the A/C system manufacturer’s service manual for oil
specications.
Technical Specications
Nominal Voltage . . . . . . . . . . .34988: 115V,60Hz
. . . . . . . . . . . . . . . . . . . . .34988-I: 230V,50/60Hz
Utilization Voltage Range. . . . 34988: 104–127
. . . . . . . . . . . . . . . . . . . . .34988-I: 200–250
Operating Range . . . . . . . 50°to120°F(11°to49°C)
Filter-Drier . . . . . . . . . . . . . . . . 43cu.in.spin-ontype
Pump Free-Air Displacement . . . . . . 1.5cfm(42l/m)
Dimensions . . . . . . . . . . . . . . . 49"Hx34"Wx23"D
. . . . . . . . . . . . . . . (124.5cmx86.4cmx58.4cm)
Control Panel & Digital Display:
interfacebetweenoperatorand
machine.
Main Power Switch:
supplieselectricalpower
tounit.
Manifold Gauges:
connecttovehicleA/Csystem;
showsystem’slow-sideand
high-sidepressure.
Printer:
producesprintoutsof
vehiclediagnostics.
Alert:visualandaudionoticethat
machineneedsattention.
Vacuum Pump Exhaust
UV Dye Reservoir:
holdsUVdyetobe
injectedintovehicle
A/Csystem.
Oil Drain Bottle:
collectsoilduringa
recoverysequence.
Oil Inject Reservoir:
holdsoiltobeinjected
intovehicleA/Csystem.
Database Expansion Slot:
anoptionaldatabasewill
supplyinformation
regardingchargecapacity
byvehiclemodel.