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www.manitowocfsusa.com 800-225-9916 10
Pre-Charged lines and Quick Connects:
Route the suction and liquid line sets between the condensing unit and evaporator coil
following the piping guidelines identified in this manual. Remove the dust caps from the
quick connect fittings and verify that the o-rings are intact. Wipe the coupling seals and
threaded surfaces with a clean cloth to prevent contamination. Lubricate the threads
and o-rings with Polyol Ester oil. Thread the coupling halves together by hand to
ensure proper thread mating. Tighten with a wrench until the coupling bodies “bottom”
or until there is definite resistance. Tighten an additional ¼ turn to ensure proper brass-
to-brass seating. Once the system is opened and pressurized, check each fitting for
refrigerant leaks. If a leak is detected, tighten until the leak stops.
WARNING
Do not loosen and disconnect the quick connect fittings before reclaiming the refrigerant
and depressurizing the system. Disconnecting a pressurized system can result in
injury!
CAUTION
Quick connects are for one time use only. Once disconnected, the coupling cannot be
re-used. Refrigerant leaks will occur if the couplings are re-used resulting in poor
system performance.
Diaphragms
Cutter
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