Hoshizaki KM-590DJ, Инструкция по эксплуатации

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ENGLISH
12
5) Use an electronic leak detector or soap bubbles to
check for leaks. Add a trace of refrigerant to the lines
through the Schrader access ports on the Parker quick
connect couplings (if using an electronic leak detector),
and then raise the pressure using nitrogen gas
(1.0MPa (10 bar)).
WARNING! DO NOT use R-404A
as a mixture with pressurized air for leak testing.
6) Evacuate through the Schrader access ports on the
Parker quick connect couplings and charge with
R-404A vapor to a pressure of 0.1-0.2MPa (1 to 2 bar).
7) Connect the refrigerant lines to the appropriate male
fi ttings on the remote condenser unit fi rst and then at
the icemaker. Make a proper connection as follows:
a. Remove the protective covers from the male fi tting
and female coupling.
b. Apply Polyol Ester (POE) refrigerant oil or Parker
Super O Lube to the entire male fi tting, including
O-ring, diaphragm, and threads, before making the
connection. See Fig. 12.
CAUTION
Do not use thread sealant on the fi ttings. Use POE
refrigerant oil or Parker Super O Lube only.
c. Make sure the male fi tting 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 fi tting.
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. 13.
8) If the line set exceeds 20 m, see "II.G.5 Line Set
Exceeding 20 m" for proper charging of the unit.
5. Line Set Exceeding 20 m
CAUTION
The icemaker, line set, and remote condenser unit
must contain the same type of refrigerant. Mixing
of refrigerants will result in improper operation and
possible damage to the refrigeration system.
The maximum line length for the standard refrigerant
charge is 20 m. Should an installation require a longer line
length, additional refrigerant must be added. Add 40 g of
R-404A for each meter over 20 m to a maximum of 30.5
m. Your nearest Hoshizaki Service offi ce is available for
recommendations.
After weighing in the additional charge, mark the unit's
nameplate to show the new correct total refrigerant charge.
Fig. 11
Female Coupling
1/2" OD Discharge
Line (Insulated)
Remote Condenser Unit
3/8" OD Liquid
Line (Insulated)
Icemaker
Male Fitting
Service Loop
Fig. 12
Fig. 13
Backup
Wrench
Reference
Line
1/6
Turn
Wrench
Wrench
After Tight, Tighten an
Additional 1/6 Turn
Backup
Wrench
Threads
Diaphragm
O-Ring
Brush
Male Fitting
DO NOT USE
THREAD SEALANT
Apply POE Oil or
Parker Super O Lube
to Entire Male Fitting