MAHLE RTI RRC770 - Manual (Page 6)

RTI Technologies, Inc.
5 September 28, 1999 Page 5
Figure 1 Filling the Charge Cylinder
FILLING THE CHARGE CYLINDER
A/C Systems requiring service often do not have a full charge of refrigerant.
The RRC770 should be filled until about 3 pounds of liquid refrigerant can be
seen in the Charging Cylinder Sight Glass. The Sight Glass is visible through
a slotted opening on the side of the RRC770.
To fill the RRC770 Charge Cylinder, refer to Figure 1 and follow these steps:
1. Connect the Red and Blue Hoses to the side of the RRC770, and close the
valves on the end of each hose.
1. Connect the short Yellow Hose provided to the Rear Port of the RRC770
and to the VAPOR port of a cylinder of new or recycled refrigerant. An
adapter is provided with the RRC770 (R134a) which permits the Field
Service Coupler to be attached to the .500 ACME fitting on the cylinder of
refrigerant.
If the cylinder has two ports, observe that the embossed marking on the
cylinder knob says VAPOR or GAS. Do not rely on color coding of the knobs
on the valves.
DO NOT CONNECT TO THE LIQUID VALVE. DO NOT TURN THE CYLINDER UP-
SIDE-DOWN. INTRODUCTION OF LIQUID MAY DAMAGE THE COMPRESSOR AND
VOID THE WARRANTY.
2. Press top (ON) of rocker switch marked POWER ON/TEST.
3. Press top (ON) of rocker switch marked RECOVER/RECYCLE.
The green COMPRESSOR RUNNING Light will illuminate and liquid refrigerant
will rise in the Charging Cylinder Sight Glass. When the level is
approximately 3 lbs, close the valve on the refrigerant cylinder. Allow the
RRC770 to continue to run until the Low Pressure Gauge is in a vacuum and the
COMPRESSOR RUNNING Light stays out for at least two minutes. This will
empty the Yellow Hose.
4. Press bottom (OFF) of rocker switch marked RECOVER/RECYCLE.
5. Press bottom (OFF) of rocker switch marked POWER ON/TEST.