Hoshizaki KM-650MAH - Manual (Page 17)

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6) Evacuate through the Schrader access 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 male fittings on the remote condenser
unit first and then at the icemaker. Make a proper 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. 8.
CAUTION
Do not use thread sealant on the fittings. Use POE refrigerant oil or Parker
Super O Lube 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. 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.
e. Mark a reference line on the female coupling and the remote condenser unit or
icemaker 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. 9.
8) If the line set exceeds 66 feet, see "II.F.5 Line Set Exceeding 66 Feet" for proper
charging of the unit.
Fig. 7
Female Coupling
1/2" OD Discharge Line
(Insulated)
Remote Condenser Unit
3/8" OD Liquid Line
(Insulated)
Icemaker
Male Fitting
Service Loop
Apply POE Oil or
Parker Super O Lube
to Entire Male Fitting
THREAD
SEALANT
Threads
Diaphragm
O-Ring
Fig. 8
Brush
Male Fitting DO NOT USE
THREAD SEALANT
POLYOL
ESTER
(POE) OIL
PARKER
SUPER O LUBE
Fig. 9
Backup
Wrench
Reference
Line
1/6
Turn
Wrench
Wrench
After Tight, Tighten an
Additional 1/6 Turn
Backup
Wrench