Huawei FusionDC1000A Maintenance Manual page 92

FusionDC1000A Prefabricated All-in-One Data
Center
Maintenance Guide (IT Scenario)
Figure 4-26 Angle valve
(1) Angle valve nut
Procedure
Step 1 Tap Shutdown on the LCD home screen and turn off the switch QF3 and the
smart cooling product switch in the PDC.
● Exercise caution because the NetCol5000-A is still energized when it is being
shut down over the LCD.
● When replacing the compressor, tighten the suction angle valve to a torque of
150 N·m and the discharge angle valve to a torque of 120 N·m.
Step 2 Open the rear door and remove the air filter.
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 compressor.
1.
2.
Issue 01 (2021-04-20)
NO TICE
Use a flat-head screwdriver to clamp the buckle of the compressor connection
box, remove the cover of the connection box, and disconnect cables from the
compressor.
Heat the suction angle valve joints using a heat gun for 10 minutes, and then
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.
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(2) Adjustable nut
4 Parts Replacement
(3) Pipe nut
84