Daikin Air Handling Unit OAH012GHAM

Warning: Ensure the unit is turned off before starting the procedure

Filters removed from inside the unit

Prefilter and final filter released

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Filters fully seated in the frame

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WARNING: Moving belt and fan can cause severe personal injury or death. During installation and filter maintenance, verify that the belt and fan guards on plenum fan units are always in place. Lock and tag out fans to prevent accidental start up. Do not enter the filter compartment until the fan is completely stopped. Use approved equipment for reaching filters located above normal reach. Do not step on filter frames or unit components. Floor surfaces must be dry and free of oil or grease.

The ideal tension is the lowest tension at which the belt does not slip under peak load conditions

Check tension frequently during the first 24 to 48 hours of operation

Over tensioning shortens belt and bearing life

Keep belts free from foreign material that can cause slippage

Inspect V-drive on a periodic basis

Adjust tension if the belt is slipping

Do not apply belt dressing. This can damage the belt and cause early failure

Warning: Cleaning should be performed by qualified personnel

Presence of moisture in drain pans

Presence of algae or bacteria in drain pans

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

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

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