Daikin Air Handler CAH021GDCC

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

Choose the type of lubricant used

Remove and clean upper and lower grease plugs

Insert a grease fitting into the upper hole and add clean grease with a low pressure gun

Run the motor for five minutes before replacing the plugs

Sign off on the motor bearings lubrication

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?

CAUTION: For safety, stop rotating equipment before lubrication

Did you add one half of the recommended amount of lubricant?

Start bearing, and run for a few minutes

Did you stop the bearing and add the second half of the recommended amount of lubricant?

A temperature rise, sometimes 30°F (1°C) after lubrication is normal. Bearing should operate at temperature less than 200°F (94°C) and should not exceed 225 (107°C) for intermittent operation

CAUTION: For best results, specific applications should be monitored regularly and lubrication intervals and amounts adjusted accordingly

Any good quality lithium or lithium complex base grease, using mineral oil, conforming to NLGI grade 2 consistency, and an oil viscosity of 455-1135 SUS at 100°F (100-200 cSt at 40°C) may be used for re-lubrication

Compatibility of grease is critical. Lubricatable bearings are supplied with grease fittings or zerks for ease of lubrication with hand or automatic grease guns. Always wipe the fitting and grease nozzle clean

Filters removed from inside the unit

Wire clips rotated to release filters

Clean filters fully seated in the frame

Filter gauges indicate 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: 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