Refrigeration Piping Work; Refrigeration Piping Work Procedures - INVENTOR u-match on/off Service Manual

U-MATCH AIR CONDITIONERS

3 REFRIGERATION PIPING WORK

3.1 Refrigeration Piping Work Procedures

1 Connecting pipelines
‹ Connection pipes must be in accordance with the following requirements: the basic principle
--- keeping dry, clean and no leakage inside.
‹ Align copper pipe flare with the center of screwed connector and tighten fully the nut of the
flare by hand.
‹ Tighten the flare nut with a torque spanner until the torque spanner makes a click, as shown
in Figure 3-1-1. Moment needed for tightening a nut is shown in Tab. 3-1-1.
Form 3-1-1 the tightening torque needed for tightening nut
Figure 3-1-1
Figure 3-1-2
Pipe diameter
1/4
3/8
5/8
1/2
3/4
INSTALLATION
Tightening torque
15-30 (N·m)
35-40 (N·m)
60-65 (N·m)
45-50 (N·m)
70-75 N·m)
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