TO CHANGE FAN WHEEL Ð If a fan wheel should fail, it may be replaced as follows:
1.Remove belts from fan pulley.
2.Loosen locking collars on the fan bearings and set screws on the fan wheels.
3.Remove the shaft through the access panel on either side of the unit.
4.Remove the fan
5.Remove the fan wheel through the fan discharge opening.
6.Replace the wheel, and reverse Steps
TO REPLACE FAN BEARING Ð If a fan bearing fails, replace it as follows:
1.Remove belts from the fan pulley.
2.Support fan shaft.
3.Loosen locking collar on fan bearing.
4.Remove bearing from the shaft.
5.Install new bearing onto the shaft, and reverse Steps
NOTE: Fan bearing and shaft are metric sizes.
MAINTENANCE
Cleaning Ð The 09BY unit should be thoroughly cleaned inside and out. Frequency of cleaning will depend on unit location and area conditions.
Drains must be kept free of dirt and trash. Coils can be cleaned with a stiff brush, vacuum cleaner, or compressed air. Coil can be reached through access panels.
Inspection Ð Check coil baffles for tight ®t to prevent air from bypassing the coil.
Check panels for air leakage, particularly those sealing the fan and coil compartments.
Check for loose electrical connections, oil level, proper refrigerant charge, and refrigerant piping leaks. The 09BY fan motor and fan shaft bearings are permanently lubricated. Further lubrication is not required. Before
Air Filters Ð Air ®lters may be installed on the con- denser air inlet. Air ®lters should be replaced or cleaned on a regular basis depending on how dirty the operating envi- ronment is. Failure to clean air ®lters regularly will result in loss of unit performance and possible nuisance tripping of the
Condensate Drain Ð If the 09BY unit is used with a condensate drain to remove rain water, the drain pan and trap should be cleaned at least twice per year. After cleaning, test the condensate drain for proper operation by pouring a bucket of water into the condensate drain pan. The water should ¯ow out immediately and evenly.
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