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TP48200A-HT19C4-1, TBC300A-TCA2 Outdoor Power System User Manual

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Huawei uses machine translation combined with human proofreading to translate this document to different languages in order to help you better understand the content of this document. Note: Even the most advanced machine translation cannot match the quality of professional translators. Huawei shall not bear any responsibility for translation accuracy and it is recommended that you refer to the English document (a link for which has been provided).
Routine Maintenance

Routine Maintenance

Routine maintenance is required periodically based on the site requirements. The recommended maintenance interval is six months. If any faults occur, rectify the faults in time.

Table 4-1  Routine maintenance checklist

Maintenance Item

Maintenance Task

Check Whether

Check Method

Repair When


Cabinet door lock

The door lock is damaged.

By observing, or by locking and unlocking the door.

The door lock fails.

Replace the door lock.


Dust accumulates on the fan surface.

By observing.

Thick dust accumulates on the fan surface.

Clean up the dust from the fan.

The fan surface is intact and the rotational speed, noise, and vibration is in the normal range.

By observing and listening to the fans.

The fan is damaged, the noise is too loud, or the vibration is abnormal.

Replace the fan.

Heat exchanger

Dust accumulates on the surface of the heat exchanging core.

By observing or checking the temperature.

Thick dust accumulates on the surface of the heat exchanging core, and the temperature inside the cabinet is overhigh.

Clean or replace the heat exchanging core.

TCUA control board

The TCUA control board works normally.

By observing, and checking the indicator and alarms.

The TCUA control board works abnormally.

Replace the TCUA control board.


The TEC04C works normally.

By observing, and checking the fan and the temperature.

The TEC module is damaged and cannot effectively cool the air.

Replace the TEC04C.

Electrical specifications

The output voltage is normal.


The battery circuit voltage or load circuit voltage exceeds its threshold.

For details, see Rectifying Common Faults

Preventive maintenance inspection (PMI)

Indicators are normal.

By observing.

An alarm is generated.


The paint or electroplated coating on the cabinet flakes off or has scratches.

By observing.

The surface is damaged or distorted.

Repaint or repair the shell.


The ground point properly connects to the ground bar in the equipment room.

By observing the grounding and using a screwdriver or wrench.

The cable connecting the ground point and the ground bar in the equipment room is loose or damaged.

Secure the ground point or replace the cable.

Updated: 2019-03-05

Document ID: EDOC1000078969

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