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2-4
CONNECT LINES
Mount the suction line and liquid line to the condensing unit. When ready to connect,
remove protector caps and plugs from the Quick Connect couplings.
If necessary, carefully wipe coupling seats and threaded surfaces with a clean cloth to
prevent the inclusion of dirt or any foreign material in the system.
Lubricate male half diaphragm and synthetic rubber seal with refrigerant oil. Thread the
coupling halves together by hand to ensure proper mating of threads. Use proper size
wrenches (on coupling body hex and on union nut) and tighten until coupling bodies
"bottom" or a definite resistance is felt.
Step 1:
Remove protector caps and plugs from the
line couplings, Apply refrigerant oil to the
entire surface of diaphragm, o-ring and
threaded area of male coupling assembly.
The amount of lubricant used must cover
all designated surfaces sufficiently. Ideal
application is a small applicator brush
saturated with lubricant and applied,
liberally.
Step 2:
Ensure that the coupling halves are held in proper alignment with each other prior to
starting the threads of the female coupling nut onto the male half. The coupling end faces
should be parallel with each other and visually in line with each other, this allows the
female coupling nut to easily be threaded on by hand for the initial 2-3 rotations of the
union nut. These initial rotations will bring the diaphragm in contact and a sharp increase
in torque will be felt when they come into contact and start to pierce the diaphragms on
each coupling half.
If the nut will not start by hand, adjust the position of the line set to ensure proper
coupling alignment and eliminate/minimize all side load force on the coupling during
assembly.
P/N 3143042_B
r
/ W
efrIgeratIon
U.S. & Canada 1-800-922-1919 • Mexico 800-890-2900 • WWW.HUSSMANN.COM
r
/ C
IrIng
outes
ontroller
Protector
Caps
Apply supplied Oil to Threads, O-rings,
and Diaphragm.
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