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9
Maintenance Requirements
• Rotate all fans and motor shafts monthly by hand. Hand-turning will ensure that the
shafts and bearings are free and will redistribute grease within the bearings. Keep
hands away from pinch points such as belts and sheaves.
• Inspect the cold water basin monthly to ensure that the drain is open, and remove any
leaves or debris that may have accumulated in the cold water basin.
• Inspect axial fans prior to start-up and at least once annually to ensure that the blades
are tight and that there is no obvious corrosion between the hub and the fan blade.
• Inspect the rust preventative coating on all motor shafts, fan shafts, and bushings
monthly. If necessary, re-coat the surfaces with RUST VETO.
Start-Up Preparation After Prolonged Storage
Keep in mind that start-up procedures after long periods of storage are just as important
as pre-shutdown procedures.
• Motors should be thoroughly inspected and cleaned and restored to pre-storage
condition.
• Inspect the axial fan(s) prior to start-up to ensure that the blades are tight and that
there is no obvious corrosion between the hub and the fan blades. Do not energize the
fan if there is obvious corrosion of fan components. Loose fan blades could result in
fan failure and possible injury or damage.
• Reinstall all fan belts and motors, and remove all protective coverings.
• For units stored prior to installation, conduct rigging procedures as directed in the
unit’s
Rigging and Assembly Instructions
, available on www.BaltimoreAircoil.com or by
contacting your local BAC Representative.
• Perform an insulation test of motor windings to ensure satisfactory insulation
resistance.
• Conduct full start-up procedure as stated in the “Start-Up Procedure” on
page 4
. Be
especially thorough for cleaning and inspection prior to start-up.
Unit Operation and
Storage
Prolonged Outdoor Storage
Motors and Drives
Controls
Miscellaneous
Maintenance Requirements
Start-up Preparation After
Prolonged Storage
Motor Recommendations
Maintenance Requirements
Start-Up Preparation After
Prolonged Storage
DANGER:
Rotating equipment
will cause severe personal injury
or death to persons who come in
contact. Do not perform any service,
maintenance or inspection on or
near the fans, motors, and drives,
or inside the unit without first
ensuring that the fan and pump
motors are disconnected, locked
out, and tagged out.