Manitowoc QD0422A Spezifikationen PDF herunterladen (Seite 100)

92 Part Number STH044 10/13

Recovery/Evacuation Procedures

1. Place the toggle switch in the OFF position.

2. Install manifold gauge set, scale, and recovery

unit or two-stage vacuum pump.

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 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 an electronic leak

detector after charging the ice machine.

4. Follow the Charging Procedures on the next

page.

RECOVERY/EVACUATION CONNECTIONS

OPEN

VACUUM PUMP/

RECOVERY UNIT

CLOSED

SCALE

REFRIGERANT

CYLINDER

OPEN

LOW SIDE

ACCESS

VALVE

HIGH SIDE

ACCESS

VALVE

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