
Section 6 Refrigeration System
6-13
Refrigerant Recovery/Evacuation and Recharging
Refrigerant Recovery/Evacuation
Do not purge refrigerant to the atmosphere.
Capture refrigerant using recovery equipment.
Follow the manufacturer’s recommendations.
Important
Manitowoc Ice, Inc assumes no responsibility
for the use of contaminated refrigerant.
Damage resulting from the use of
contaminated refrigerant is the sole
responsibility of the servicing company.
Important
Replace the liquid line drier before
evacuating and recharging. Use only a
Manitowoc (O.E.M.) liquid line filter drier to
prevent voiding the warranty.
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.
Figure 6-3: Recovery/Evacuation Connections
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 a halide or
electronic leak detector after charging the
Reach-In.
5. Follow the Charging Procedures on the
next page.
HIGH SIDE
SERVICE
VALVE
LOW SIDE
SERVICE
VALVE
BACKSEATEDBACKSEATED
OPEN
OPEN
MANIFOLD LINE SET
CLOSED
OPEN
VACUUM PUMP/
RECOVERY UNIT
CHARGING
CYLINDER
SV1404A
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