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Section 7 Refrigeration System
Part No. 80-1214-3 7-15
Refrigerant Recovery/Evacuation and Recharging
REFRIGERANT RECOVERY/EVACUATION
Normal Self-Contained Model Procedures
Do not purge refrigerant to the atmosphere. Capture
refrigerant using recovery equipment. Follow the
manufacturer’s recommendations.
CONNECTIONS
Quick disconnect fittings are recommended to prevent
accidental release of refrigerant.
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 toggle switch in the OFF position and
disconnect all power.
2. Install manifold gauges, charging cylinder/scale, and
recovery unit or two-stage vacuum pump.
Recovery/Evacuation Connections
3. 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 500 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 ice machine.
4. Refer to Charging Procedures.
Remote Air-Cooled Models
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.
SV3055
BACKSEAT BACKSEAT
OPEN
OPEN
MANIFOLD SET
LOW SIDE
ACCESS
VALVE
HIGH SIDE
ACCESS
VALVE
SCALE
OPEN
VACUUM
PUMP/
RECOVERY
UNIT
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.
Revised 8/2003