Refrigeration System | Section 7 |
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Important
Replace the liquid line drier before evacuating and recharging. Use only a Manitowoc (OEM) 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:
•Suction side of the compressor through the suction
•Discharge side of the compressor through the liquid line
•Receiver service valve, which evacuates the area between the check valve in the liquid line and the liquid line solenoid valve.
!Warning
Recovery/Evacuation requires connections at three points for complete system recovery/evacuation. A check valve is located in the ice machine head section between the liquid line
Recovery/Evacuation (QF2200/QF2300)
1.Place the toggle switch in the OFF position and disconnect all power to the ice machine and condensing unit.
2.Install the manifold gauges, charging scale and recovery unit or
3.Open the receiver service valve halfway.
4.Open high and low side on the manifold gauge set.
5.Perform recovery or evacuation:
A.Recovery: Operate the recovery unit as directed by the manufacturer’s instructions.
B.Evacuation prior to recharging: Evacuate to 500 microns. Then allow the pump to run for an additional hour. Turn off the pump and perform a standing vacuum leak check.
6.Refer to Charging Procedures.
CONNECTIONS MUST BE |
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MADE AT 3 POINTS FOR |
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COMPLETE REFRIGERANT | SV3016 |
RECOVERY OR EVACUATION |
!Warning
The receiver service valve (located in the ice machine head section) must be accessed during refrigerant recovery to allow complete removal of the refrigerant charge.
| Revised 8/2003 | Part No. |
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