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Part Number 80-0111-9 6/11 185
SELF-CONTAINED RECOVERY/EVACUATION
1. Place the 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 ice
machine service valves, and open high and low
side on manifold gauges.
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 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.
Follow the Charging Procedures below.
CHARGING PROCEDURES
1. Be sure the toggle switch is in the OFF position.
2. Close the vacuum pump valve, the low side
service valve, and the low side manifold gauge
valve.
3. Open the high side manifold gauge valve, and
backseat the high side service valve.
4. Open the charging cylinder and add the proper
refrigerant charge (shown on nameplate) through
the discharge service valve.
5. Let the system “settle” for 2 to 3 minutes.
6. Place the toggle switch in the ICE position.
7. Close the high side on the manifold gauge set.
Add any remaining vapor charge through the
suction service valve (if necessary).
Important
The charge is critical on all Manitowoc ice
machines. Use a scale or a charging cylinder to
ensure the proper charge is installed.
185


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