Huawei MTS9300A - 4.1.7 ESMs

No. Maintenance Item If... Then...
6 Check whether cables
have overheated and
are deteriorating.
● Cables are too
thin.
● Cables are not
properly routed.
● Replace the cables
with cables of the
required thickness.
● Route the cables
properly.
7 Check whether cables
are misshapen by
metal parts.
Cables are not
properly installed.
Replace the cables and
adjust the cable
routing.
8 Check whether cables
pass behind the air
exhaust vents of
rectiers.
Cables are not
properly installed.
Adjust the cable
routing to prevent
cable overheating.
9 Check whether cable
insulation is damaged.
Cable insulation is
damaged.
Reinsulate the cables
with insulation tape.
4.1.7 ESMs
NO TICE
● To ensure the optimal operating status of ESMs, check and maintain ESMs
regularly. When maintaining ESMs, record related information for checking ESM
management parameters in the future.
● Install ESMs in a dry and, clean, and ventilated environment that is far away
from sources of ignition. Avoid direct exposure to sunlight or rain water.
● Keep ESMs away from strong infrared radiation, organic solvents, and corrosive
gases.
● Ensure that battery cables do not come in contact with water.
Table 4-7 ESMs Routine maintenance
Maintenance
Interval
Maintenance
Item
Measure
Monthly Operating
environment
Keep ESMs far away from heat sources and avoid direct exposure
to sunlight.
Exterior If an ESM experiences damage, leakage, or deformity, disconnect,
take pictures, and then replace the faulty ESM.
Quarterly Cleanliness Clean the ESM exterior using dry cotton cloth. Exercise caution
when cleaning an ESM because its voltage is high.
MTS9300A Telecom Power (Ooredoo, Indonesia,
MTS9304A-HD2002)
User Manual 4 Maintenance
Issue 06 (2021-10-13) Copyright © Huawei Technologies Co., Ltd. 48