Daikin Maverick II IM 991-2: Planned Maintenance

Routine maintenance should cover the following items:

• Tighten all belts, wire connections, and setscrews.

• Clean the evaporator and condenser coils mechanically or with cold water, if necessary. Usually any fouling is only matted on the entering air face of the coil and can be removed by brushing.

• Lubricate the motor and fan shaft bearings.

• Align or replace the belts as needed.

• Clean or replace the filters as needed.

• Check each circuit’s refrigerant sightglass when the circuit is operating under steady-state, full load conditions at or above 70° ambient. The sightglass should then be full and clear. If it is not, check for refrigerant leaks.

• NOTE: A partially full sight glass is not uncommon at part load conditions. Do not use each circuit’s refrigerant sight glass to indicate proper charge. Sightglasses are to be used for moisture indication only.

• Check for proper superheat.

• Check for proper subcooling.

• Check for blockage of the condensate drain. Clean the condensate pan as needed.

• Check the power and control voltages.

• Check the running amperage of all motors.

• Check all operating temperatures and pressures.

• Check and adjust all temperature and pressure controls as needed.

• Check and adjust all damper linkages as needed.

• Check the operation of all safety controls.

• Examine the gas furnace (see IM 684 or IM 685).

• Check the condenser fans and tighten their setscrews.

• Lubricate the door latch mechanisms.