Replacing A Differential Pressure Switch - Huawei NetCol8000-C190 User Manual

NetCol8000-C190 In-room Chilled Water Smart
Cooling Product
User Manual (2022, Singapore STT)
When installing a new PSU, ensure that the handle is in the lower part of the PSU.
Step 5 Insert the spare PSU into the corresponding slot of the power distribution subrack,
and push the latch downwards to lock the PSU.
----End

7.5 Replacing a Differential Pressure Switch

Context
Tool: Phillips screwdriver
Procedure
Step 1 Tap Shutdown on the home screen of the display module.
Exercise caution because the device is still energized after it is shut down on the
screen of the display module.
Step 2 Turn off the active power switch QF1 and standby power switch QF2.
Step 3 Remove the pressure inlet tube.
Step 4 Remove the screws securing the differential pressure switch using a Phillips
screwdriver and take out the switch.
Figure 7-7 Removing the differential pressure switch
Step 5 Remove the screw from the differential pressure switch cover and take out the
cable.
Step 6 Set the new differential pressure switch to 300 Pa, install the switch, and close the
front door.
Step 7 After powering on the device, tap Start on the home screen of the display module,
choose Settings > Alarm Settings > Main Board, and check whether Air filter
blocked is set to Allow.
Issue 02 (2022-03-30)
NO TICE
NO TICE
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