Vertiv SmartCabinet - 5.2.1.4. Maintenance Inspection checklist

Vertiv | SmartCabinet | User Manual 135
General Maintenance
Refrigeration system
Thecomponentsoftherefrigerationsystemshouldbeinspectedmonthlyforndinganyabnormaloperationor
faults.Thepipesforrefrigerationmustbeproperlyxedandshouldnotbeallowedtovibrateagainstthewall,
oor,ortheunitframe.Inspectalltherefrigerantpipeseverysixmonthsforsignsofwearandtear.
Air cooled condenser
» Therearetimeswhentheairowthroughtheoutdoorunitisrestricted.Insuchascenario,use
compressedairorancleaner(alkalescence)tocleanthedustanddebristhatinhibitsairowothe
condenser.Thecompressedairshouldbeblowninthereverseairowdirection.
» In winter, prevent snow from accumulating around the side or underneath the condenser. Check for bent
ordamagednsandrepairthem,ifnecessary.
» Check all the refrigerant pipes and capillaries for issues related to vibration and support them, if required
Carefully inspect all the refrigerant pipes for signs of oil leakage and rectify it if any leakage is found.
Compressor
The compressor faults can be categorized into two types:
» Motorfaults(suchaswindingburnout,insulationfailure,shortcircuitbetweencoils,etc.)
» Mechanicalfaults(suchascompressorfailure,reliefvalvefaults,etc.)
Iftheoperatingpressureisnotestablished,itmeansthatthecompressorhasfailed.Conrmifthesuction
pressure and discharge pressure are balanced and verify that the motor does not rotate reversely. The
controller is streamlined with capabilities like powerful alarm and protection functions to ensure safe operation
of the compressor. Periodic checks of high pressure and low pressure along with alarm protection for such
pressure-related issues should be carried out by maintenance personnel on a regular basis to rule out
discrepancies.
• Avoid touching or any skin contact with the residual gas and oils in the compressor. Wear long rubber
gloves to handle contaminated parts.
• The air conditioning system contains refrigerant and release of refrigerant to the atmosphere is harmful
due to environmental issues. The refrigerant must be changed or recycled based on the local and state
regulations and protocols.
5.2.1.4. Maintenance Inspection checklist
Periodic checks are essential to ensure proper operation of the AC unit.
The following table in Table 5-1 is the maintenance inspection checklist for the AC unit: