Hoshizaki F-1001MAJ-C Instruction Manual page 29

6) Evacuate the line set copper tubes through the charging ports on the Parker quick
connect couplings and charge with R-404A refrigerant vapor to a pressure of 15 to
30 PSIG.
7) Connect the refrigerant lines to the appropriate fittings on the rack system first (if not
already brazed on), then at the icemaker.
If the couplings to the rack system are not Parker quick connect couplings, follow the
coupling manufacturer's instructions. Make a proper Parker quick connect coupling
connection as follows:
a. Remove the protective covers from the male fitting and female coupling.
b. Apply Polyol Ester (POE) refrigerant oil or Parker Super O Lube to the entire male
fitting, including O-ring, diaphragm, and threads, before making the connection.
See Fig. 16. NOTICE! Do not use thread sealant on the fittings. Use POE
refrigerant oil or Parker Super O Lube only. Couplings are one-time use only.
c. Make sure the male fitting and female coupling are properly aligned, then start the
connection by hand to ensure that it is not cross threaded.
d. Place a backup wrench on the back of the female coupling, then tighten the
connection with a wrench until it is tight. At this point, the nut has covered most of
the threads on the male fitting. NOTICE! Failure to use a backup wrench may
result in damage to the line set and possible refrigerant leaks.
e. Mark a reference line on the female coupling and the unit panel. Using a backup
wrench on the back of the female coupling, tighten the six-sided nut of the female
coupling an additional 1/6 turn. See Fig. 17. NOTICE! Confirm connection is free
of leaks.
8) Open the rack system service valves.
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