Huawei NetCol8000-A045D User Manual page 278

NetCol8000-A(045, 055, 060, 090, 120) In-room Air
Cooled Smart Cooling Product
User Manual
Figure 11-11 Angle valve (NetCol8000-A045 used as an example)
(1) Angle valve nut
Procedure
Step 1 Tap Shutdown on the home screen, and turn off the active power switch QF1,
standby power switch QF2, and drive switch QF3.
Exercise caution because the device is still energized after it is shut down on the
home screen.
Step 2 Open the front door.
Step 3 Recycle the refrigerant from the low-pressure needle valve and exhaust pipe
needle valve to ensure that there is no pressure in the system. (If a low
temperature component is used, recycle the refrigerant from the liquid pipe needle
valve, low-pressure needle valve, and exhaust pipe needle valve.)
Step 4 Remove the electric heating belt.
Step 5 Remove the cover of the connection box and disconnect the compressor power
cables.
Step 6 Remove the compressor.
1.
Issue 05 (2020-10-10)
NO TICE
Heat the suction angle valve thread connection position for 10 minutes using
a heat gun. Use two 30# adjustable wrenches to secure the angle valve nut
and pipe nut on the suction side, and use a 36# adjustable wrench to loosen
the adjustable nut until the pipe is separated from the angle valve.
NO TICE
After removing the valve, seal the suction vent immediately to ensure that the
system is clean and moisture does not enter the pipe.
Copyright © Huawei Technologies Co., Ltd.
(2) Adjustable nut
11 Parts Replacement
(3) Pipe nut
268