MAHLE RTI TC670E - Manual (Page 7)

RTI Technologies, Inc.
Page 6
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 TC670E 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 front of the TC670E.
Figure 1 Filling the Cylinder
To fill the TC670E 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 TC670E (R134a) which permits the Field Service
Coupler to be attached to the 0.500 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 TC670E MAY DAMAGE THE
COMPRESSOR AND VOID THE WARRANTY.
2. Press top (ON) of rocker switch marked RECOVER/RECYCLE.
The TC670E 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 3 lbs.
close the valve on the refrigerant cylinder. Allow the TC670E 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.