Manitowoc Ice S1800 service manual Self-Contained Recovery/Evacuation, Connections

Section 7 Refrigeration System

Refrigerant Recovery/Evacuation and Recharging

NORMAL SELF-CONTAINED MODEL PROCEDURES Refrigerant Recovery/Evacuation

Do not purge refrigerant to the atmosphere. Capture refrigerant using recovery equipment. Follow the manufacturer’s recommendations.

SELF-CONTAINED RECOVERY/EVACUATION

1.Place the toggle switch in the OFF position.

2.Install manifold gauges, scale, and recovery unit or two-stage vacuum pump.

MANIFOLD SET

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.

	OPEN	OPEN
LOW SIDE	BACKSEATED	BACKSEATED	HIGH SIDE
SERVICE			SERVICE
VALVE			VALVE

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

Manifold gauge sets must utilize low loss fittings to comply with U.S. Government rules and regulations. Make these connections:

1.Suction side of the compressor through the suction service valve.

2.Discharge side of the compressor through the discharge service valve.

VACUUM PUMP/

RECOVERY UNIT

OPEN

CLOSED

SV1404A

Figure 7-8. Recovery/Evacuation Connections

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.

5.Follow the Charging Procedures.

Part Number 80-1634-3 7-21