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6.4.
Maintenance and service checklist
System component
Refrigerant circuit
– Connections
– Condenser
– Condensation water
drain
– rooftop air conditioner
unit
Compressor
– Compressor
– supports
– elec. connections
Electrical connections
– Power supply wires
– Connectors
Abbreviations: m – monthly, a – yearly (a – every six months if operated throughout the year)
6.5.
Inspections before repair
In order to avoid unnecessary disassembly or duplication of work, the overall condition of the airconditioning
system must be checked before starting any repairs.
Visual inspection
a)
Outer condition of rooftop unit:
– Hood without cracks and no damage to paint finish
– Air inlets and outlets clean and undamaged
– Attachment points secure and without corrosion
– Wiring connections serviceable
– Openings in metal undamaged.
b)
Condition of air-diffusor
– Attachment points / screws secure
– Circulating air inlet undamaged and clean.
c)
Condition of compressor
– Hose connections undamaged and secure
– Attachment parts / screws secure.
– Electrical connection undamaged.
Maintenance tasks
Test for leaks with leak tester
Check condition of fins (must be cleaned if soiled)
Check openings and clean if necessary
Check overall condition and secure attachment of
connections
Check for abnormal noises during operation
Check condition and function
Check for signs of oxydation
Check for unobjectionable condition
Check for unobjectionable condition and secure attachment
Rooftop Air Conditioning System Citysphere
Frequency
m
6m
a
X
X
X
X
X
X
X
X
X
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