Replacing The Tec04C - Huawei TP48200A-HX09A2 User Manual

TP48200A-HX09A2, TBC300A-TCA2 Outdoor Power
System
User Manual

4.4.10 Replacing the TEC04C

Prerequisites
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Context
You only need to disconnect the power cable from the TEC control box, but do not need to
disconnect the AC input for the system.
Procedure
Step 1 Disconnect the power from the TEC control box and record the cable information.
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Step 2 Remove the TEC04C.
1.
Issue 02 (2019-02-26)
You have obtained an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, and the
cabinet door key.
The new TEC is intact.
Connect the ground cable to the ESD wrist strap and wear the ESD wrist strap and ESD
gloves.
Switch off the circuit breaker for the TEC control box on the DC PDU.
Remove the power cable from the TEC control box.
Record the position where the TEC control board connects to the signal cable, and then
disconnect the signal cable.
Unscrew the TEC control box and take down the TEC control box.
Record the position on the TEC control board where the TEC04C power cable and signal
cables connect to the TEC control board, disconnect the cables.
Unscrew and remove the external cover from the cabinet door, as shown in
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4 Maintenance
Figure 4-22.
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