Parts Replacement; Replacing The Air Filter - Huawei NetCol8000-E220 User Manual

NetCol8000-E220 Modular Indirect Evaporative
Cooling System
User Manual
Alar
m ID
A30E
-02
A30E
-04
A30F
-01

6.5 Parts Replacement

6.5.1 Replacing the Air Filter

Prerequisites
●
●
Context
The return air filter is maintained from the maintenance door.
Issue 06 (2020-08-19)
Alarm Alarm Name
Severit
y
WARNI Certificate has
NG expired
WARNI Certificate has
NG expired
MAJOR Air-side
differential
pressure
sensor
communicatio
n failure
The air filter needs to be replaced.
Spare air filters of the same model are available and functional.
Copyright © Huawei Technologies Co., Ltd.
6 System Operation and Maintenance
Probable Cause
1. The
corresponding
certificate has
expired.
2. The system time
is incorrectly set.
1. The
corresponding
certificate has
expired.
2. The system time
is incorrectly set.
1. The differential
pressure sensor
cable is loose or
damaged.
2. The DIP switch of
the differential
pressure sensor is
set incorrectly.
3. The differential
pressure sensor is
faulty.
4. The
communications
port of the main
control board is
faulty.
Solution
1. Apply for a new
certificate promptly
and update the
existing one.
2. Calibrate the system
time.
1. Apply for a new
certificate promptly
and update the
existing one.
2. Calibrate the system
time.
1. Maintain or replace
the differential
pressure sensor.
2. Set the DIP switch of
the differential
pressure sensor
correctly.
3. Maintain or replace
the differential
pressure sensor.
4. Maintain or replace
the main control
board.
205