Hoshizaki Low-Profile Modular Crescent Cuber MRH User Manual download pdf (Page 26)

5. Line Set Installation

Precharged factory line sets, available as optional equipment from Hoshizaki America,

are recommended. For details, see "II.G.5.a) Factory Line Set Installation." Field

fabricated line sets are allowed. For details, see "II.G.5.b) Field Fabricated Line Set

Installation."

a) Factory Line Set Installation

1) Route the factory line set (see "II.G.4 Line Set Size and Refrigerant Charge" for

details) from the remote condenser unit to the icemaker. Leave a service loop behind

the icemaker to allow the icemaker to be pulled out for service. See Fig. 12. Factory

fabricated line sets are precharged and do not need to be evacuated. If the line set is

too long or too short, see "II.G.5.a)(1) Factory Line Set Modication."

NOTICE

• Ensure that there are no traps and no kinks in the line set. The service loop is not

considered an oil trap.

• Do not coil extra line set.

2) Connect the refrigerant lines to the appropriate male ttings on the remote condenser

unit rst and then at the icemaker. Make a proper connection as follows:

a. Remove the protective covers from the male tting and female coupling.

b. Apply Polyol Ester (POE) refrigerant oil or Parker Super O Lube to the entire male

tting, including O-ring, diaphragm, and threads before making the connection.

SeeFig. 13. NOTICE! Do not use thread sealant on the ttings. Use POE

refrigerant oil or Parker Super O Lube only.

c. Make sure the male 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 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. 14.

3) If you lengthened the line set as outlined in "II.G.5.a)(1) Factory Line Set Modication"

and it exceeds 66 feet, see "II.G.4. Line Set Size and Refrigerant Charge" for proper

charging of the appliance.

(1) Factory Line Set Modication

1) Recover the line set charge through the Schrader access ports on the Parker quick

connect couplings and store it in an approved container. Do not discharge the

refrigerant into the atmosphere. Remove the extra line set length or add extra tubing.

When adding extra tubing, insulate the additional copper tubes separately.

2) 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 (140 PSIG). WARNING! Do not use R-404A as a mixture with

pressurized air for leak testing.

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Hoshizaki Low-Profile Modular Crescent Cuber MRH User Manual Page 26