Preventive maintenance checklist for packaged rooftop HVAC units at quarterly intervals
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| # | Service Item | Spec / Target | Actual | P/F | Notes |
|---|---|---|---|---|---|
| Filters and Airflow | |||||
| 1 | Return air filter condition and replacement | ||||
| 2 | Filter rack seals (no bypass) | ||||
| 3 | Supply air temperature reading | ||||
| 4 | Return air temperature reading | ||||
| Condenser Section | |||||
| 5 | Condenser coil condition and cleanliness | ||||
| 6 | Condenser fan motor amps | ||||
| 7 | Condenser fan blade condition | ||||
| 8 | Condenser guard and panels | ||||
| Refrigeration Circuit | |||||
| 9 | Suction pressure | ||||
| 10 | Discharge pressure | ||||
| 11 | Superheat | ||||
| 12 | Subcooling | ||||
| 13 | Compressor running amps | ||||
| 14 | Compressor oil level (if sight glass fitted) | ||||
| 15 | Compressor noise and vibration | ||||
| Economiser | |||||
| 16 | Economiser damper operation | ||||
| 17 | Actuator stroke and linkage | ||||
| 18 | Minimum OA position setpoint | ||||
| 19 | Mixed air temperature sensor | ||||
| Gas Heating (if fitted) | |||||
| 20 | Burner ignition and flame | ||||
| 21 | Flame sensor signal | ||||
| 22 | Heat exchanger visual inspection | ||||
| 23 | Flue condition and termination | ||||
| 24 | Gas pressure (manifold) | ||||
| Electrical and Controls | |||||
| 25 | Contactor condition | ||||
| 26 | Thermostat / BMS setpoint operation | ||||
| 27 | High-pressure cutout test | ||||
| 28 | Low-pressure cutout test | ||||
| 29 | Wiring and terminal tightness | ||||
I confirm that all items have been inspected/completed as indicated above. Any defects or concerns have been noted and reported.