Connections - Manitowoc QuietQube SD0672C Technician's Handbook

CONNECTIONS

Manifold gauge sets must utilize low loss fittings to
comply with U.S. Government rules and regulations.
All CVD condensing units are now manufactured with
a check valve in the compressor discharge line. The
check valve requires an additional connection on the
condensing unit during evacuation and recovery
procedures. Connection of a manifold gauge set (or
a hose with core depressors on both ends)
between the suction filter access port and the
compressor access valve (located between the
compressor and discharge line check valve) is
required.
Make these connections:
Ice Machine Head Section - All Models
1. Suction side of the compressor through the
suction shut-off valve or suction access valve.
2. Discharge side of the compressor through the
liquid line shut-off valve or high side access valve.
3. Receiver access valve, (both receiver service
valves on S3070C = fastest recovery time) which
evacuates the area between the check valve in
the liquid line and the liquid line solenoid valve.
CVD Condensing Unit - Started In 2010
4. Compressor discharge access valve
5. Suction filter access valve.
Recovery/evacuation of a QuietQube
system requires connections at either three, five or
six points for complete system recovery/evacuation.
Check valves are located in the ice machine head
section on all models and in the CVD condensing
unit on models manufactured in 2010 and beyond.
Three point connections are - receiver service valve,
suction line and liquid line - Five point requires
another connection between the compressor and
suction filter access valves to recover and evacuate
the entire system.
Part Number 80-1505-3 6/11
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