Ups Power Distribtuion System Maintenance - Emerson SmartCabinet User Manual

SmartCabinet AC
Date:
Model:
Type Maintenance components
Filter
Monthly
Indoor unit fan
Drain system
Compressor
Refrigerant system
Semi-
annually
Air-cooled condenser
Electric board
Notes:
Signature:
Make photocopies of this form for your records.

7.2.3 UPS Power Distribtuion System Maintenance

Fan Maintenance
The UPS fans are intended to run for 20000 hours ~ 40000 hours continuously. The higher the environmental
temperature is, the shorter the fan life will be.
During UPS operation, verify the fan status once every half a year by confirming that the airflow can blow out from the
ventilation holes on the rear panel of the UPS.
Checking UPS status
Clean the UPS periodically, especially the ventilation holes, to ensure free airflow inside the UPS. If necessary, clean
the UPS with a vacuum cleaner. Confirm that the ventilation holes are unobstructed.
It is recommended to check the UPS operation status once every half a year.
Check the following items:
1. Check whether the UPS is faulty: Is the FAULT indicator on? Is the UPS giving any alarm?
2. Check whether the UPS is operating in Bypass mode. Normally, the UPS operates in Normal mode; if it operates in
Bypass mode, find out the reason, such as operator intervention, overload, internal fault, and so on.
3. Check whether the battery is discharging: When mains is normal, the battery should not discharge; if the UPS
operates in Battery mode, find out the reason, such as mains failure, battery test, operator intervention, and so on.
Note
Refer to Liebert ITA 5kVA UPS User Manual for the detailed maintenance operation and replacing instructions.
®
Table 7-1 Maintenance inspection checklist
Prepared by:
Serial Number:
Item
Check for restricted airflow
Check the filter
Clean the filter
Bearings in good condition
Check and clean out unit drain pipes
Signs of oil leaks
Vibration isolation
Suction pressure
Discharge pressure
Superheat
Evaporator in tight and clean condition
Charging capacity of refrigerant
Evident temperature difference between before and after the
filter drier
Condenser coil is clean
Motor mounted tightly
Bearing in good condition
Refrigerant pipes properly supported
Check electrical connections
Check the surface for signs of corrosion
SmartCabinet Integrated Solution User Manual
Chapter 7 Maintenance 91
Result