User guide

2
Introduction
RobinairNo.34788-HisusedonR-134avehiclesandisdesignedtobecompatiblewith
existingserviceequipmentandstandardserviceprocedures.Thisunit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
Voltage .......................115V,60Hz
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)
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.
Flow Indicators: red
lightindicateshigh-side
owfromvehicleA/C
systemthroughunit;
bluelightindicateslow-
sideowfromvehicle
A/Csystemthroughunit.
Digital Display: visual
interfacebetween
operatorandmachine.
Control Panel:
foldsatforstorage.
Tool Storage Areas
(additionalstorage
onbacksidefor
extralter-driersand
oilbottles).