Hitachi SET FREE-Serie Bedienungsanleitung Seite 43

PIPING WORK AND REFRIGERANT CHARGE
Service port
Stop valve
for liquid
valve
Cutting portion
(Ø6.35 pipe)
Cut here
Heat exchanger fin
Heat exchanger
Metal plate for
protection
Closing pipe
!
C a U t i o n
• Ensure that there is no gas inside the pipe when removing the closing
pipe. Otherwise, the pipe may be blown out and it may lead to injury.
• Protect the return oil pipe and vibration proof of the compressor with
a metal plate when using a burner.
Liquid valve
Tighten the flare nut for liquid stop valve according to the
following torque. If an excessive force is applied to the flare nut,
the refrigerant leakage may occur from the spindle part.
(Put two spanners as shown in the right figure when the piping
is removed and attached. If not, the refrigerant leakage may
occur.)
Do not put two spanners here.
Refrigerant leakage may occur.
Two spanners work
33 PMML0479 rev.2 - 02/2018
Stop valve for gas
valve (high/low
pressure)
Stop valve for gas
valve (low pressure)
Stop valve
cover (Read the
precautions)
End of closing pipe (Ø6.35)
Closing pipe
Stop valve for liquid valve
Stop valve for gas pipe (body)
(high/low pressure)
Stop valve for gas pipe (body)
(low pressure)
Field-work side
Valve stay
Torch
Tightening work for stop valve (liquid)
Do not put two spanners here
A
Flare nut
Put two spanners here
series
fsXnse
fsXnPe
!
C a U t i o n
• Do not apply an excessive force to the spindle valve after fully opening
the spindle. The back seat construction is not provided.
• At the test run, fully open the spindle. If it is not fully opened, the
devices will be damaged.
B
C
Flare nut
Flare nut
HP Valve type
8 - 12 A
14 - 18
B
20 - 24
C
5 - 12 A
14 B
16, 18
C