FusionModule800 Smart Small Data Center
Maintenance Guide
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
5.3.1.8 Replacing a Humidifier Float
For the method of replacing a humidifier float, see 5.3.1.7 Replacing a Liquid Level Detector.
5.3.1.9 Replacing a Differential Pressure Switch
Prerequisites
Tool: Phillips screwdriver.
The differential pressure switch needs to be replaced.
A spare differential pressure switch of the same model is available and functional.
Context
The differential pressure switch is maintained from the rear.
Procedure
Step 1 Shut down the air conditioner over the EMS.
Method 1: Log in to the ECC800 mobile phone or pad app as admin.
a. Choose Home.
b. Tap the cabinet that houses the air conditioner in the micro-module view.
c. Tap the air conditioner to be set in the cabinet layout diagram.
d. Choose Real-time Data > OFF.
Method 2: Log in to the ECC800 WebUI as admin. Choose Monitoring > Air
Conditioner > NetCol5000-A0104 > Controls > Ctrl Info, set On/off status on
EMS > Off, and then click Submit.
0104 in NetCol5000-A0104 is variable and subject to changes with the air conditioner connection
sequence. The displayed value prevails.
Step 2 Disconnect the power supply from the air conditioner control unit after the air conditioner
shuts down over the EMS.
Step 3 Remove the return air filter by referring to 5.3.1.1 Replacing a Return Air Filter.
Step 4 Remove the two screws from the differential pressure switch fastener, and remove the
differential pressure tube, as shown in Figure 5-36.
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