MAHLE RTI TC640 - Manual (Page 6)

RTI Technologies, Inc.
September 15, 1997 Page 5
Figure 1 Filling the Cylinder
FILLING THE CHARGING CYLINDER
A/C Systems requiring service often do not have a full charge of refrigerant.
To avoid unnecessary repositioning of hoses it is recommended that the TC640
be filled until about 1.5Kg of liquid refrigerant can be seen in the Charging
Cylinder Sight Glass. The Sight Glass is visible through a slotted opening on
the front of the TC640.
To fill the TC640 Charge Cylinder, refer to Figure 1 and follow these steps:
1. Connect the Low Side Blue Hose to the VAPOR port of a cylinder of new or
recycled refrigerant. An adapter is provided with the TC640 (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 INTO THE TC640 MAY DAMAGE THE
COMPRESSOR AND VOID THE WARRANTY.
2. Press top (ON) of rocker switch marked RECOVER/RECYCLE.
The TC640 will recover and recycle refrigerant into the Charging Cylinder.
Observe the liquid refrigerant level rise in the Charging Cylinder Sight
Glass and when at approximately 1.5Kg close the valve on the refrigerant
cylinder. Allow the TC640 to continue running until the Low Side Gauge
shows a vacuum. This will evacuate the Blue Hose.
3. Press bottom (OFF) of rocker switch marked RECOVER/RECYCLE.