Loren Cook Company Ventilation Fan 165SQN-B

Verify wheel-to-inlet clearance before initial start-up

Enter the measured wheel-to-inlet overlap

Is the measured overlap within the maximum allowed for the selected size range?

Loosen the wheel hub and adjust the wheel along the shaft to correct overlap

Loosen the inlet cone bolts and reposition the inlet cone for uniform radial gap

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 (if bearing is not visible)

Adjust greasing interval based on conditions

Inspect bolts and setscrews for tightness

Inspect belt wear and alignment

Inspect bearings as recommended in the Conditions chart

Is the motor installed vertically?

Use polyurea mineral oil NGLI #2 grease for lubrication

Use compatible grease for lubrication

Complete lubrication of motor bearings

Motor Bearings with Sleeve Bearings

Verify lubrication instructions on motor nameplate

Has the unit been stored for a year or more?

Is the unit operating under severe conditions?

Add LIGHT grade mineral oil or SAE 10W oil (up to 30 drops)

Motor Bearings without Sleeve Bearings

Are the bearings grease lubricated ball or roller bearings?

Is the unit operating under severe conditions, high temperatures, or excessive contaminants?

Disassemble and lubricate the bearings