CAUTION
•
KEEP IMPORTANT 5 POINTS FOR PIPING WORK
(1) Take away dust and moisture (Inside of the
connecting pipes.)
(2) Tight the connection (between pipes and unit)
(3) Evacuate the air in the connecting pipes using
a VACUUM PUMP.
(4) Check gas leak (connected points)
(5) Be sure to fully open the packed valves
before operation.
Fig. 10-4-8
A
H
Hexagon wrench
is required.
Service Port Cap
Valve Rod Cap
Cap
Torque
Cap Size (H)
Valve Rod
Cap
Service
Port Cap
H17 - H19
H22 - H30
H14
H17
14~18 N.m
(1.4 to 1.8 kgf·m)
33~42 N.m
(3.3 to 4.2 kgf·m)
8~12 N.m
(0.8 to 1.2 kgf·m)
14~18 N.m
(1.4 to 1.8 kgf·m)
<Packed valve handling precautions>
Pressure gauge
Manifold valve
–101 kPa (-76 cmHg)
Handle Lo
Connecting pipe
Compound pressure gauge
Vacuum
pump
Handle Hi (Keep full closed)
Charge hose (For R
32
only)
Vacuum pump adapter for
counter-flow prevention
(For R
32
only)
Packed valve at gas side
Service port (Valve core (Setting pin))
Packed valve at liquid side
Charge hose (For R
32
only)
•
Open the valve stem all the way out, but do not try
to open it beyond the stopper.
Pipe size of Packed Valve
Size of Hexagon wrench
12.70 mm and smallers
A = 4 mm
15.88 mm
A = 5 mm
•
Securely tighten the valve cap with torque in the
following table
FILE NO. SVM-17001
- 70 -
Fig. 10-4-
9