Vertiv | Liebert® CRV4 | User Manual 85
System Operation and Maintenance
Chapter 8: System Operation and Maintenance
This chapter describes the system operation and maintenance of the Liebert® CRV4 range of air conditioners
briey in accordance to the end-user perspective. It includes information related to routine maintenance and
inspection, electrical parts, connections, refrigerant system maintenance guidelines, cabling, system diagnosis,
visual appearance checks, and drainage maintenance among others; that help in system fault diagnosis and
treatment.
For the diagnosis and treatment of complex fault please contact Vertiv representative.
Prior to operation and maintenance, the lethal voltage may be present in the unit which can be fatal. All
notes, warnings, and cautions marked on the unit as well as the ones mentioned in the manual must be
considered, otherwise, it may lead to injury and fatality.
Qualied and professional maintenance personnel are the one supposed to operate and handle the unit.
8.1. Routine Maintenance & Inspection Items (Monthly)
Following is a checklist which contains parts and components that are to be checked to ensure proper and
accurate functionality. In addition to that, there may be wear and tear of the unit. Therefore, it is essential that
all the checks are performed to ensure a smooth ow in operations. Table 8-1 details the list of inspection
activities and actions that need to be implemented and carried out every month during maintenance of the
various components in the Liebert CRV4 series of air conditioners.
Table 8-1 Routine Maintenance & Inspection Checklist (Monthly)
Components Item Remark
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
Compressor
Check for leakage
Listen to the operation sound, observe the operation vibration
Air cooled
condenser
Ensure that the condenser coil is clear from dirt and debris. Clean if required.
The fan base should be rm
The fan vibration absorber is not deteriorated or damaged.
The SPD board should be eective (in the seasons when there are storms, the
SPD board should be checked once a week).
The refrigerant piping are properly supported
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