Daikin Air Handler CAC018GBAM

Drain pans in any air conditioning unit may have some moisture.

Algae, etc., can grow due to airborne spores and bacteria.

Periodic cleaning is necessary to prevent this buildup from plugging the drain and causing the drain pan to overflow.

Also, keep the drain pans clean to prevent the spread of disease.

Cleaning should be performed by qualified personnel.

Dirt and lint can clog the condensate drain, especially with dirty filters.

Inspect twice a year to help avoid overflow.

Sign off on the coil maintenance

Check all moving parts for wear

Check bearing collar, sheave, and wheel hub setscrews, sheave capscrews, and bearing hold-down bolts for tightness

Inspect for signs of water damage such as corrosion and repair if necessary

Check ground conductor and connection integrity and correct if needed

Annually check and snug all electrical connections

Sign off on the air handler check

Did you clean the drain pan regularly to prevent mold development?

Did you drain all coils as thoroughly as possible?

Did you fill each coil independently with an antifreeze solution using a small circulating pump and again thoroughly drain?

Did you check freezing point of antifreeze before proceeding to next coil?

Remove and Replace Components of Coils

Did you remove the flat head fasteners located along the sides of the panel?

Did you remove the frame channels that run the length of the unit along the top?

Did you remove the fan shaft, motor, and any drive components?

WARNING: Before servicing fans, lock out and tag out all power to the unit. Fans or belts can cause severe personal injury or death

WARNING: Do not open the hinged access door and screw-fastenerd access panels while the unit is operating. Moving parts and strong suction forces can cause severe personal injury or death

Replace the variable pitched motor sheave with a properly sized, fixed sheave

Replace the adjustable sheaves with fixed sheaves

Measure the diameter of the V-belt outer surface where it passes around the sheave (pitch diameter)

Calculate fan speed from the motor nameplate rpm

Sign off on the fan drive maintenance

Warning: This procedure requires trained personnel with PPE!

Belt tension slacked off if belts have been installed?

Capscrews E loosened but not removed?

Pitch diameter adjusted by opening or closing the movable flanges by half or full turns?

Setscrews D and capscrews E tightened?

If belts have been installed, belt tension readjusted? If belts have not been installed, belts installed and belt tension adjusted?