Vertiv Liebert CRV4 Series User Manual

Vertiv | Liebert® CRV4 | User Manual 86
System Operation and Maintenance
Components Item Remark
Refrigeration
system
Check the suction pressure
Check the discharge pressure
Check the refrigerant piping for signs of leaks
Check the moisture condition in the system through the sight glass
Check the electronic expansion valve
Heating system
Check the re-heater operation
Check the erosion on the components
8.2. Routine Maintenance and Inspection (Semi-annually)
Following is a checklist (refer Table 8-2) of the items that need to be checked semi-annually to ensure a smooth
operational ow, and check the functionality as well as the wear-and-tear of the components in the
Liebert® CRV4 range of air conditioners.
Table 8-2 Routine Maintenance and Inspection Checklist (Semi-annually)
Components Item Remark
Air Filter
Check for clogging or damage
Check the lter clogging switch
Clean the lter
Fan
The fan blades are not distorted
The bearings are not worn out
Check and fasten the circuit connections
Compressor
Check for leakage
Listen to the operation sound, observe the operation vibration
Check and fasten the circuit connections
Air-cooled
condenser (if used)
Check the ns cleanness
The fan base should be rm
The fan vibration absorber is not deteriorated or damaged
The SPD board should be eective (in the seasons, when the storms are
common, the SPD board should be checked once a week)
Check the voltage regulating function of the rotation speed controller
The temperature switch is set at the required position
The refrigerant piping are properly supported
Check and fasten the circuit connections
Check the suction pressure

Vertiv Liebert CRV4 Series Specifications

General

Brand	Vertiv
Model	Liebert CRV4 Series
Category	Air Conditioner
Language	English