CPS FX1234, Service Manual, Page: 5 / 57

5
RECOVER/RECYCLE
NOTE: The FX1234 and FX3030 will implement refrigerant indentifying process according to J2743. Refrigerant sample
will pass through (SC2) low side service hose. The refrigerant sample will then pass through low side manifold valve (LV2)
and (LS2) solenoid valve allow sample into identifier. Once refrigerant has been sampled and passes. The recovery unit will
operate as instructed below.
See Identifier Plumbing Schematic .
The Manifold gauges read the respective service line pressures. The recovered refrigerant will pass through their
respective open HI and LO manifold valves (LV1, LV2). The combined HI and LO refrigerant then flows through
the open RECOVER valve (LV4) and then into a Constant Pressure Regulator. The REGULATOR reduces the
pressure down to 80 psig where it flows into a DOA Chamber where oil is separated from refrigerant (if liquid is
present) the liquid refrigerant is boiled off by the heat exchanger in DOA Chamber. After leaving the DOA
Chamber, the vapor refrigerant enters the COMPRESSOR suction where it is compressed to a high pressure gas.
This completes the first step in the recycling process. The refrigerant then passes through the heat exchanger in
DOA Chamber then to RECOVERY OUT valve (HV1) and passes by the systems HIGH PRESSURE SWITCH
(HP) on its way to the storage tank. If the pressure goes above 450 psig, the HP will open and disrupt power to the
unit’s compressor and signals to the control PCB that a HIGH PRESSURE LIMIT condition exists. Recovery is
complete when the Pressure Transducer (PT) senses the required vacuum. When recovery is complete, the
automatic oil drain will commence for 45 seconds.