Daikin Air Handling Unit OAC090GHAM

Warning: Cleaning should be performed by qualified personnel

If the drain pan is overflowing, report the issue to the maintenance team and stop the procedure

Drain pan cleaned successfully?

Upload a photo of the cleaned drain pan

Sign off on the drain pan cleaning

All electrical connections checked and snug

Signs of water damage such as corrosion inspected

Water damage repaired if necessary

Sign off on the electrical system check

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

WARNING: Mold can cause personal injury. Clean drain pan regularly so mold does not develop.

Coils can freeze due to air stratification or failure of outdoor air dampers and/or preheat controls.

Do not depend on routine draining of water cooling coils for winter shutdown as insurance against freeze-up. Severe coil damage can result.

Drain all coils as thoroughly as possible.

Fill each coil independently with an antifreeze solution using a small circulating pump and again thoroughly drain.

Check freezing point of antifreeze before proceeding to next coil.

Due to a small amount of water always remaining in each coil, there is a diluting effect. The small amount of antifreeze solution remaining in the coil must always be concentrated enough to prevent freeze-up.

NOTE: Carefully read instructions for mixing antifreeze solution used. Some products have a higher freezing point in their natural state when mixed with water.

Daikin Applied is not responsible for the freezing of coils.

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