Robinair 34988 Recovery, Recycling, Recharging Unit - Manual (Page 4)

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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 specifications 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 efficient 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
specifications.
Technical Specifications
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.