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General Inspection
Inspect unit for physical damage
Check air filters and clean/replace as needed
Inspect electrical connections and tighten as needed
Verify proper refrigerant charge
Water-Side Inspection
Inspect water piping for leaks
Check water flow rate
Verify water treatment levels
Clean/flush water strainers
Performance Verification
Measure inlet/outlet water temperatures
Measure entering/leaving air temperatures
Verify proper operation of reversing valve
Check for abnormal noise or vibration