Daikin Air Handler OAH021GDAM

Warning: This maintenance check requires trained personnel with PPE!

Drain pans in any air conditioning unit may have some moisture.

Presence of algae or bacteria growth in the drain pans?

Periodic cleaning is necessary to prevent this buildup from plugging the drain and causing the drain pan to overflow.

Also, keep the drain pans clean to prevent the spread of disease.

Cleaning should be performed by qualified personnel.

Dirt and lint clogging the condensate drain?

Inspect twice a year to help avoid overflow.

Sign off on the coil maintenance

Loosen setscrews B and C in moving parts of sheave and pull out external key E

Number of turns to adjust sheave pitch diameter for desired speed

Replace external key E and securely tighten setscrews B over key and setscrews C into keyway in fixed half of the sheave

Put on belts and adjust tension

Number of turns to adjust the pitch diameter of the sheave for future adjustments

Adjust both halves of the two-groove sheaves by the same number of turns from closed position

Verify that all keys are in place and that all se screws are tight before starting drive

Check setscrews and belt tension after 24 hours service

Sign off on the Pitch Key Sheave Maintenance

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

Coil is clean for maximum performance

Coil checked once a year under normal operating conditions

If coil is dirty, it has been brushed or vacuum cleaned

Chemical coil cleaner used on multiple row coils

Instructions of the chemical cleaner have been read and followed

Fins are not damaged while cleaning

CAUTION: For safety, stop rotating equipment before lubrication

Did you stop the equipment before lubrication?

Add one half of the recommended amount of lubricant

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

Start bearing, and run for a few minutes

Did you run the bearing for a few minutes?

Stop bearing and add the second half of the recommended amount of lubricant

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

A temperature rise, sometimes 30°F (1°C) after lubrication is normal