Loren Cook Company Ventilation Fan 210SQN-B

Verify belt and pulley installation prerequisites

Loosen motor plate adjustment nuts on L-bolts

Move motor plate to allow belts to slip into pulley grooves

Adjust motor plate for proper belt tension (1/4” deflection per foot of center distance)

Lock motor plate adjustment nuts in place

Ensure pulleys are properly aligned

Check for specialized lubrication instructions on fan labels.

Is the fan in operation during lubrication?

Pump grease slowly until a slight bead forms around the bearing seals.

Is the bearing visible during lubrication?

Number of grease injections used with hand operated grease gun (if bearing is not visible)

Check for specialized lubrication instructions on fan labels.

Ensure the fan is in operation before lubrication.

Pump grease slowly until a slight bead forms around the bearing seals.

Is the bearing visible during lubrication?

If the bearing is not visible, use no more than three injections with a hand operated grease gun.

Adjust greasing interval based on installation conditions

Loosen setscrew on motor pulley

Adjust the groove facing to change the pitch diameter

Ensure RPM limits of the fan and the horsepower limits of the motor are maintained

Retighten pulley setscrew on one of the flat areas of the motor shaft

Check for proper belt tension after adjustment

Ensure fan bearings are prelubricated

Check for any specialized lubrication instructions on fan labels

Verify bearing grease is a petroleum lubricant in a lithium base conforming to an NLGI #2 consistency

Is the lubricant compatible with the installation?

Adjust lubrication interval based on installation conditions

Lubricate the bearing while the fan is in operation

Pump grease in slowly until a slight bead forms around the bearing seals