PREVENTIVE MAINTENANCE SCHEDULE
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FREQUENCY OF MAINTENANCE, MONTHS
(FIRST 4 YEARS)
I T E M
CAUTION:
Disconnect power supply and allow all rotating parts to stop before servicing the unit.
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Check all electrical controls, components, wiring terminals, etc..., for sparks,
over heat, loose connections & repair or correct it
Clean condenser coil
Check motors, blower bearings & lubricate it
Check for loose bolts/screws & tighten as necessary
Check for rusted/dented/damaged body parts & repair/repaint as necessary
Run test all motors and check the amperage, abnormality etc..
Check mountings (spring isolators/rubber pads) & repair/replace as necessary
Run test compressors and check the amperage, noise, oil level, pressure,
etc..., and correct them accordingly
Check the thermostat/control devices for correct operation. Calibrate/re-adjust
as required
Apply corrosion inhibitor/contact cleaner as required
Check all temperature, pressure readings as applicable and satisfy the
operation performance
NOTE
: Always observe for abnormal noise or vibration.
MAINTENANCE TOOLS/EQUIPMENT REQUIRED
STANDARD
:
Screw drivers (Slot & Phillips), adjustable wrenches, pliers, refrigeration wrenches & socket set wrenches, etc.
SPECIAL
:
Manifold gauge set, R-22 charging cylinder, leak detector, vacuum pump with electronic gauges, thermometer &
hook type ammeter/voltmeter/ohmmeter etc.
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