Service manual

Refrigeration Section 8
8-2
Refrigerant Recovery / Evacuation &
Recharging
Do not purge refrigerant to the atmosphere. Capture
refrigerant using recovery equipment by specific
manufacturer’s recommendations.
IMPORTANT
We assume no responsibility for the use of
contaminated refrigerant. Damage resulting from
the use of contaminated refrigerant is the sole
responsibility of the servicing company.
CONNECTIONS
1. Suction side of the compressor through the
suction service valve.
2. Discharge side of the compressor through the
discharge service valve.
SELF-CONTAINED RECOVERY/EVACUATION
1. Place the main ON/OFF toggle switch in the
OFF position.
2. Install manifold gauges, charging cylinder/scale,
and recovery unit or two-stage vacuum pump.
3. Open (backseat) the high and low side Reach-In
service valves.
4. Perform recovery or evacuation:
a) Recovery: Operate the recovery unit as
directed by the manufacturer’s instructions.
b) Evacuation prior to recharging:
Pull the system down to 250 microns. Then,
allow the pump to run for an additional half-
hour. Turn off the pump and perform a standing
vacuum leak check.
NOTE: Check for leaks using halide or electronic
leak detector after charging the Reach-In.
Continued next page…
Figure 7.1