Replacing The Water Valve Actuator - Huawei NetCol8000-C070 User Manual

NetCol8000-C(070, 130, 190) In-room Chilled Water
Smart Cooling Product
User Manual
Before installing the new T/H sensor, ensure that its DIP switch setting is consistent with that on
the original T/H sensor. That is, the first toggle switch is ON, and the others are OFF.
Step 5 Connect the cable terminals to the ports on the T/H sensor, and install a new T/H
sensor in the original position.
Step 6 Close the front door.
----End

6.7.5 Replacing the Water Valve Actuator

Context
Tools: diagonal pliers, cable ties
Procedure
Step 1 Tap Shutdown on the LCD home screen.
Step 2 Open the front door and turn off the general switch. For a device that has two
power inputs, turn off the active power switch QF1 and standby power switch
QF2.
Step 3 (For the upflow units) Remove the electric control box cover, remove the cord end
terminals 1, 2, 3, and 5 from the actuator using a small-sized flat-head
screwdriver, and cut off the cable ties of the actuator to ensure that the actuator
cables are separated from the unit.
Step 4 (For the downflow units) At the terminal position in the upper left corner of the
unit, remove the cord end terminals 1, 2, 3, and 5 from the actuator using a small-
sized flat-head screwdriver, and cut off the cable ties of the actuator to ensure
that the actuator cables are separated from the unit.
Step 5 Remove the chilled water valve actuator.
1.
Issue 02 (2020-08-30)
NO TE
Pull the actuator handle up to remove it, as shown by (1) in
Figure 6-11 Removing the actuator of a chilled water valve
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Figure 6-11.
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