Daikin Air Handling Unit OAH065GHAM

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

Read and follow the chemical cleaner’s instructions

Warning: Some cleaners may contain harsh chemicals

Ensure fins are not damaged while cleaning

All electrical connections checked and snug

Signs of water damage such as corrosion inspected

Ground conductor and connection integrity checked

Sign off on the electrical system check

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: 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

Sign off on the lubrication procedure

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 for more details

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