Daikin Air Handler CAC077GBAM

WARNING: Personal Injury Hazard. Power supply can cause electrical shock. Always disconnect all power to unit before servicing

WARNING: UV-C exposure is harmful to the skin and eyes. Looking at an illuminated UV-C bulb can cause permanent blindness. UV-C skin exposure can cause cancer

WARNING: Fluorescent bulbs contain mercury, which can cause personal injury if breathed or ingested. Use appropriate protective gear to clean up broken bulbs

Verify the UV lights are off by using the view window

Disconnect power to the power receptacle before servicing

Verify the power is disconnected

Before opening the access panels, use the viewing window to make sure the UV lights are off

Before handling, allow bulbs to cool for 5 minutes

Grasp body of bulb firmly at each end

CAUTION: Sharp fin edges are a potential injury hazard. Avoid contact with them

To obtain maximum performance, the coil must be clean

Check once a year under normal operating conditions and, if dirty, brush or vacuum clean.

Use a chemical coil cleaner on multiple row coils

Read and follow the chemical cleaner's instructions as some cleaners may contain harsh chemicals

Take care not to damage fins while cleaning.

Check all moving parts for wear

Check bearing collar, sheave, and wheel hub setscrews, sheave capscrews, and bearing hold-down bolts for tightness

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 and correct if needed

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

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

Make future adjustments by loosening the belt tension and increasing or decreasing the pitch diameter of the sheave as required

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

Warning: Moving belt and fan can cause severe personal injury or death. Always ensure safety measures are in place.

Is the belt tension at the lowest tension at which the belt does not slip under peak load conditions?

Force applied to the belt tension checker

Does the force applied match the required values?

Is the belt free from foreign material that can cause slippage?

Is the V-drive inspected and adjusted if necessary?

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

Are the belt and fan guards on plenum fan units always in place?