Vertiv Liebert LDF42-R3, Руководство пользователя

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Vertiv I Liebert Air Cooled Condenser I User Manual 24
Chapter 4 Maintenance and Troubleshooting
This chapter introduces the maintenance and troubleshooting of the condenser. Users should
check the condenser regularly and solve the problems in time.
1. The maintenance of the condenser must be done by technicians.
2. Except for the commissioning items that must be carried out with power-on,
during maintenance, the power of the indoor unit and the air switch of the
condenser must be cut off.
4.1 Maintenance

Refrigeration system
1. Check that the refrigeration pipes are firmly fixed. The refrigeration pipes shall not shake
with the vibration of wall, earth or equipment frame. Otherwise, reinforce the refrigeration pipes
with fastening objects.
2. Check that there is no oil on the accessories of all refrigeration pipes, and make sure that the
pipes do not leak.

Heat exchanger
1. Clean the fin of the heat exchanger regularly.
2. Clean the fin of the heat exchanger with compressed air or fin detergent (weakly alkaline) if
the condenser airflow is blocked. Inverse airflow is good when the compressed air is used.
3. Check for damaged fins and maintain them in time.
4. Avoid snow accumulation around the condenser in winter.

Fan
Check that the fan runs normally. Check it for problems such as abnormal noise, vibration and
bearing failure.

Fan speed controller
Check that the fan speed controller board operates normally. If not, replace it as illustrated in
the following paragraph.
Note that the positions of the bolt installation holes on the fan speed controller
could be different on the actual product.