Huawei MTS9300A - 4.3.5 Replacing Heat Exchanger Fans

NO TICE
● Before replacing a circuit breaker, switch the circuit breaker to OFF. Do not
operate with power on.
● Power-o will disconnect the power supply to loads. Obtain prior consent from
customers before replacing a circuit breaker.
Procedure
Step 1 Switch o the circuit breaker to be replaced.
Step 2 Record the connection positions of cables, remove the cables, and insulate them.
Step 3 Remove the faulty circuit breaker.
Figure 4-6 Removing a circuit breaker
Step 4 Install the new circuit breaker.
Step 5 Connect cables to the circuit breaker based on the recorded cable information.
Step 6 Switch on the circuit breaker.
----End
Follow-up Procedure
Pack the removed component and send it to the local warehouse.
4.3.5 Replacing Heat Exchanger Fans
Prerequisites
● The ESD wrist strap, ESD gloves, ESD box or bag, and toolbox are available.
● The new fan is intact.
Procedure
Step 1 Connect the ground cable to the ESD wrist strap, and put on the ESD wrist strap
and ESD gloves.
Step 2 Record the positions of signal cables on the UIM, and disconnect the cables.
Step 3 Unscrew and remove the UIM.
MTS9300A Telecom Power (Ooredoo, Indonesia,
MTS9304A-HD2002)
User Manual 4 Maintenance
Issue 06 (2021-10-13) Copyright © Huawei Technologies Co., Ltd. 54