MAHLE RTI RRC770A - Manual (Page 18)

Page 15
PROBLEM: I turned a 30 lb. cylinder of new refrigerant up-side-down to pre-charge the
Internal Cylinder with liquid. The Internal Cylinder didn't fill and now the
RRC770 won't recover from an A/C system.
SOLUTION: The RRC770 has been overloaded with liquid refrigerant. See Safety
Precaution Section at the beginning of this manual.
... WARNING ...
IF A CYLINDER IS TURNED UP-SIDE-DOWN, THE
RRC770 WILL OVERFILL WITH LIQUID REFRIGERANT.
THIS OVER FILLS THE SUCTION ACCUMULATOR WITH
LIQUID.
FROST ON THE OIL DRAIN ON THE REAR OF THE
RRC770 IS A GOOD INDICATION OF THIS
OCCURRENCE.
THIS SYMPTOM IS CAUSE FOR CONCERN AS LIQUID
REFRIGERANT WILL BE FORCED INTO THE
COMPRESSOR.
THIS CAN DESTROY THE COMPRESSOR AND WILL
VOID THE WARRANTY.
The safest method to remove the excess liquid which has collected in the
Suction Accumulator is to drain it from the Oil Drain on the back of the
RRC770 as follows:
Draw a deep vacuum (25 to 29 InHg) on an empty cylinder and connect it to
the Oil Drain Valve. Open the cylinder valve and the Oil Drain valve.
Close the valves and disconnect the cylinder after the liquid has been drawn
into the cylinder. This refrigerant can now be recycled by the RRC770
following normal recycling procedures.
If the above suggested solutions do not solve the problem, call 717-840-0678 and one of
our technicians will help diagnose the cause. Please have the Serial Number and hour
meter reading available for reference.