Daikin Air Handler CAH008GDAC

CAUTION: Bearing overheating potential. Can damage the equipment. Do not over lubricate bearings. Use only a high grade mineral grease with a 200°F safe operating temperature.

NOTE: Direct-Drive Class Il fans that are supplied with TECO motors have double shielded bearings on frame sizes 140T-280T. These bearings are pre-packed with a long life grease and are not regreaseable. Larger frame size TECO motors are regreaseable and follow the same lubrication recommendations as all other motors

Select the type of lubricant used

Grease fitting inserted into the upper hole

Motor run for five minutes before replacing the plugs

Sign off on the motor bearings lubrication

Filters removed from inside the unit

Wire clips rotated to release filters

Clean filters fully seated in the frame

Pressure drop for installed filters

Typical filter pressure drop for clean filters at rated air flow

Final pressure drop for front loaded filters

Prefilters removed to check the pressure drop of the final filters

Warning: This maintenance check 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?

Adjust motor base forward to release belt tension

Remove the belts for easier adjustment

Loosen, but do not remove both of the locking setscrews A in the outer locking ring by using a hex key or torque wrench with a hex bit

Adjust sheave to desired pitch diameter by turning the outer locking ring, using a spanner wrench or drift inserted into the three holes that are located 120° apart on the ring

Tighten BOTH locking screws A in the outer locking ring before operating the drive. Use a torque wrench and tighten to the value

Replace belts and adjust the motor base to tension the belts properly

Do not loosen any screws other than the two locking screws A in the outer locking ring when adjusting the sheave pitch. Do not operate the drive until the locking screws have been set to the torque specifications

Warning: This maintenance check requires trained personnel with PPE!

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

Presence of algae or other growth 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 clogging the condensate drain, especially with dirty filters?

Inspect twice a year to help avoid overflow.

Sign off on the coil maintenance