Coupling Instructions - Scotsman C1448R Installation And User Manual

C1448, C1848, C2148 D Series
Remote Condenser Models - User Manual

Coupling Instructions

The couplings on the ends of the pre-charged line
sets are self-sealing when installed properly.
Follow these instructions carefully.
These steps must be performed by an EPA Certified
Type II or higher technician.
Initial Connections
1. Remove the protector caps and plugs. Wipe the
seats and threaded surfaces with a clean cloth to
remove any possible foreign matter.
2. Lubricate the inside of the couplings, especially
the O-rings, with refrigerant oil.
3. Position the fittings on the correct connections on
the condenser and ice machine.
• The discharge line (schrader valve end) goes to the
remote condenser fitting marked "discharge line".
• The 3/8" liquid line (schrader valve end) goes to the
remote condenser fitting marked "liquid line".
• The discharge line goes to the ice maker fitting
marked "discharge line".
• The 3/8" liquid line goes to the ice maker fitting
marked "liquid line".
Final Connections:
4. Begin by tightening the couplings together by
hand until it is certain that the threads are properly
engaged.
5. Then using two wrenches tighten the coupling
until it bottoms out or a definite increase in
resistance is felt.
It is important that ONLY the nut on the pre-charged
tube be turned, or the diaphragms will be torn out
by the piercing knives and they will be loose in the
refrigeration system.
Note: As the couplings are tightened, the diaphragms
in the quick connect couplings will begin to be
pierced. As that happens, there will be some
resistance to tightening the swivel nut.
6. Continue tightening the swivel nut until it bottoms
out or a very definite increase in resistance is felt
(no threads should be showing).
7. Use a marker or pen to mark a line on the
coupling nut and unit panel. Then tighten the
coupling nut an additional one-quarter turn. The
line will show the amount that the nut turns. Do
NOT over tighten.
8. After all connections have been made, and after
the king valve has been opened (do not open yet),
check the couplings for leaks.
December 2014
Page 11