Daikin Air Handling Unit OAH080GHAM

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.

Fan Shaft Bearings CAUTION: For safety, stop rotating equipment.

Did you add one half of the recommended amount shown in Table 43?

Did you start bearing, and run for a few minutes?

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

Enter the temperature rise after re-lubrication

Is bearing operating at temperature less than 200°F (94°C)?

Is bearing not exceeding 225°F (107°C) for intermittent operation?

For a re-lubrication schedule, see Table 44. For applications that are not in the range of the table, contact Daikin Applied.

If the coil is dirty, proceed with the following steps

Use a chemical coil cleaner on multiple row coils

Enter the name of the chemical cleaner used

I have read and followed the chemical cleaner’s instructions

Check for any damage to fins during cleaning

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

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.)

Warning: Disconnect and lock electrical power source before starting the procedure.

Check tightness of all bearing, wheel, and sheave setscrews (or capscrews). Refer to Table 28 on page 42.

Recheck belt tension and adjust if necessary. Belts that are tensioned sufficiently to slip one to two seconds at startup perform satisfactorily, extending life and reducing vibration.

If re-tensioning is necessary, be certain to retain sheave alignment.

Sign off on the 48 Hours Air Handling Unit Check