112
Part Number STH042 3/14
SELF-CONTAINED RECOVERY/EVACUATION
1. Place the power button in the OFF position.
2. Install manifold gauge set, 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 gauge set.
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 an electronic leak
detector after charging the ice machine.
Follow the Charging Procedures below.
CHARGING PROCEDURES
1. Be sure the power button 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. Press the power button to the on position.
Important
The charge is critical on all Manitowoc ice
machines. Use a scale or a charging cylinder to
ensure the proper charge is installed.
Summary of Contents for NEO
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