Instruction Manual

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 ttings on the rack system rst (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 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. 16. NOTICE! Do not use thread sealant on the ttings. Use POE

refrigerant oil or Parker SuperOLube only. Couplings are one-time use 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. 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 tting. 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! Conrm connection is free

of leaks.

8) Open the rack system service valves.