Daikin Air Handling Unit OAH040GHAM

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

Warning: Cleaning should be performed by qualified personnel

Is there moisture in the drain pan?

Upload a photo of the drain pan before cleaning

Upload a photo of the drain pan after cleaning

Sign off on the drain pans cleaning

Removing and Replacing Components

Before removing component, lock out and tag out all power to the unit

Fans and belts can cause severe personal injury or death

See page 12 for instructions on removing panels and opening fan access doors to remove or replace components

The fan shaft, motor, and any drive components can be removed and replaced through the access door opening

If required, the side panel can be removed for additional access

If fan replacement is required, the entire fan assembly can be pulled out the side of the cabinet for housed fan assemblies

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.

Motor Bearings: Supply and return fans—Supply and return fan motors should have grease added after every 2000 hours of operation.

Using the following procedure, re-lubricate the bearings while the motor is warm, but not running.

NOTE: Direct Drive Class II 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 re-greaseable. Larger frame size TECO motors are re-greaseable and follow the same lubrication recommendations as all other motors.

NOTE: Specific greasing instructions are located on a tag attached to the motor. If special lubrication instructions are on the motor, they supersede all other instructions.

Table 43: Recommended Lubricants and Amounts for Fan Motor Bearings

NEMA Size 56 to 140: Amount to Add (oz.)

NEMA Size 140: Amount to Add (oz.)

Before servicing lock out and tag out all power to the unit

Fans or belts cause severe personal injury or death

Do not open the hinged access door and screw-fastened access panels while the unit is operating

Moving parts and strong suction forces can cause severe personal injury or death

Upon completion of the air balance, replace the variable pitched motor sheave with a properly sized, fixed sheave

A matching fixed sheave provides longer belt and bearing life and minimizes vibration