Loren Cook Company Ventilation Fan 180SQN-B

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

Fill the bearings with grease or moisture-inhibiting oil

Store the fan in its original crate

Drill two 1/4” diameter holes, 180° apart centered approximately between the shaft and the outside diameter of the hub, 3/8” to 1/2” in depth.

Tap 1/4” holes to 5/16” thread with a 5/16” hole tap.

Screw the puller arms to the full depth of the threads into the tapped holes.

Align center of the puller with the center of the shaft.

Ensure all setscrews in the hub are fully removed.

Slowly remove wheel from the shaft.

Use Lisle No. 45000 Sterling Wheel Puller.

Motor Bearings - NEMA Frame Size up to & including 184T

Verify relubrication intervals for NEMA Frame Size up to & including 184T

Is the motor installed vertically?

Confirm grease compatibility for motor bearings

Motor Bearings - NEMA Frame Size 213T-365T

Verify relubrication intervals for NEMA Frame Size 213T-365T

Is the motor installed vertically?

Confirm grease compatibility for motor bearings

Ensure fan bearings are prelubricated

Check for 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?

Relubricate bearings according to conditions chart

Lubricate the bearing while the fan is in operation

Pump grease slowly until a slight bead forms around the bearing seals (number of pumps)