TP48200A-DT19C1, TP48200A-DT19C2,
TP48200A-HT19C1 and TP48200A-HT19C2 Telecom
Power
User Manual
4 Maintenance
Issue 03 (2019-11-15)
Copyright © Huawei Technologies Co., Ltd.
72
4.
Connect the removed cables to the internal circulation fan based on the recorded
positions.
Step 5
Switch on the circuit breaker (F10) for the TCUA control box on the DC PDU.
Step 6
Disconnect the ground cable from the ESD wrist strap, and take off the ESD wrist strap and
ESD gloves.
----End
4.4.7 Replacing the External Circulation Fan of the Heat
Exchanger (for the TP48200A-HC1 & HC2)
Prerequisites
Prepare an ESD wrist strap, a pair of ESD gloves, an ESD box or bag, the cabinet door
key, and a maintenance tool kit.
Check that the new fan is intact.
Context
You only need to disconnect the power supply to the TCUA control box, but do not need to
disconnect the AC input to the power system.
Procedure
Step 1
Connect the ground cable to the ESD wrist strap, and put on the ESD wrist strap and ESD
gloves.
Step 2
Switch off the circuit breaker (F10) for the TCUA control box on the DC power distribution
unit (PDU).
Step 3
Removing the external circulation fan
1.
Record the position where cables connect to the external circulation fan, and then
disconnect the cables.
2.
Remove the cover from the external circulation fan, as shown in Figure 4-14.