Chicago Blower Corporation Centrifugal Fan D/36A SQB

Check all bearing lubrication frequently

Refer to bearing manufacturer's instructions for lubrication details

Check for excessive vibration due to the following possibilities

Is the vibration level within acceptable limits?

Preventive Maintenance Schedule

Establish a lubrication schedule based on manufacturer instructions

Check all base, hub bearing, pedestal bolts after one month of operation

Lubrication Check and Maintenance

Ensure units have adequate grease

Fill units 100% full if idle for extended periods

Add grease slowly to purge old lubricant

Rotate bearings during relubrication if safe

Inspect bearing installations every six months

Investigate any unusual noise or vibration change immediately

Bearing Locking and Torque Check

Ambient and Operating Conditions Check

Record bearing operating temperature

Select the appropriate greasing interval based on conditions

Select the appropriate grease type

Check alignment of the drives with a straightedge or string

Ensure belt tension is properly adjusted for good belt and bearing life

Verify sheave faces are parallel and aligned within 1/16 inch

Confirm use of balanced sheaves

Adjust centers to take up all slack with belts in their proper grooves

Is the belt tension normal, allowing depression at mid-point equal to one belt width with normal finger pressure?