Daikin Air Handler CAH096GDCM

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

Is the belt and fan guards on plenum fan units in place?

Is the fan locked and tagged out to prevent accidental start up?

Is the fan completely stopped before entering the filter compartment?

Is approved equipment used for reaching filters located above normal reach?

Are floor surfaces dry and free of oil or grease?

Force applied to the belt tension checker

Does the measured force match the required values?

WARNING: Personal Injury Hazard. Power supply can cause electrical shock. Always disconnect all power to unit before servicing

WARNING: UV-C exposure is harmful to the skin and eyes. Looking at an illuminated UV-C bulb can cause permanent blindness. UV-C skin exposure can cause cancer

WARNING: Fluorescent bulbs contain mercury, which can cause personal injury if breathed or ingested. Use appropriate protective gear to clean up broken bulbs

Verify the UV lights are off by using the view window

Disconnect power to the power receptacle before servicing

Verify the power is disconnected

Before opening the access panels, use the viewing window to make sure the UV lights are off

Before handling, allow bulbs to cool for 5 minutes

Grasp body of bulb firmly at each end

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

Sign off on the air handler check

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