Daikin Air Handler CAH004GVAM

Warning: Moving belt and fan can cause severe personal injury or death. Always ensure safety measures are in place.

Is the belt free from foreign material that can cause slippage?

Force applied to the belt tension checker

Does the measured force match the ideal values?

Is the floor surface dry and free of oil or grease?

Are the belt and fan guards on plenum fan units always in place?

Is the fan completely stopped before entering the filter compartment?

Sign off on the Fan Drive Belt Maintenance

CAUTION: Sharp fin edges are a potential injury hazard. Avoid contact with them

To obtain maximum performance, the coil must be clean

Check once a year under normal operating conditions and, if dirty, brush or vacuum clean.

Use a chemical coil cleaner on multiple row coils

Read and follow the chemical cleaner's instructions as some cleaners may contain harsh chemicals

Take care not to damage fins while cleaning.

Check all moving parts for wear

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

Annually check and snug all electrical connections

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

Check ground conductor and connection integrity and correct if needed

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

Ensure pitch diameter is within the sheave range. One complete turn of the outer locking ring changes the pitch diameter 0.233\" 6"

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

Ensure no screws other than the two locking screws A in the outer locking ring are loosened when adjusting the sheave pitch. Do not operate the drive until the locking screws have been set to the torque specifications

Sign off on the MVP Variable Speed Sheave Maintenance

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

Motor bearings and ball bearings lubricated

Supply and return fans lubricated

Upper and lower grease plugs removed and cleaned

Clean grease added with a low pressure gun

Motor run for five minutes before replacing the plugs

Enter the amount of lubricant used