Daikin Air Handler CAH004GDAC

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

Belt tension slacked off if belts have been installed

Capscrews E loosened but not removed

NOTE: This key projects a small amount providing a grip for removing

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

NOTE: Two-groove sheaves are supplied with both grooves set at the same pitch diameter. To provide the same pitch diameter for satisfactory operation, move both movable flanges the same number of turns. Do not open sheaves more than five turns for A belts or six turns for B belts

Setscrews D and capscrews E tightened

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

Select the type of lubricant used

Amount of lubricant used (in oz)

Motor run for five minutes after lubrication

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

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?