TP48200A-HT15D3 Telecom Power (Russia, Megafon)
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
72
4.4.11 Replacing the Heater
Prerequisites
You have obtained an ESD wrist strap, ESD gloves, protective gloves, the cabinet door key,
and tools.
Context
Disconnect the AC input circuit breaker for the heater, instead of the AC input to the power
system.
Procedure
Step 1
Connect the ground cable for the ESD wrist strap, and put on the ESD wrist strap and ESD
gloves.
Step 2
Record the positions of cables on the heater, and disconnect the cables.
Step 3
Remove the heater, as shown in Figure 4-21.
Figure 4-21
Removing a heater
Step 4
Install a new heater.
Step 5
Reconnect the cables to the heater based on the recorded information.
Step 6
Disconnect the ground cable for the ESD wrist strap, and take off the ESD wrist strap and
ESD gloves.
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