Loren Cook Company Ventilation Fan 100SQN-B

Motor Bearings with Sleeve Bearings

Verify lubrication requirements

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

Verify lubrication requirements

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

Disassemble and lubricate bearings if required

Establish a schedule for inspecting all parts of the fan

Determine the frequency of inspection based on operating conditions and location

Inspect fans exhausting corrosive or contaminated air within the first month of operation

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

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?

Is the temperature greater than 200°F?

Is the motor installed vertically?

Use polyurea mineral oil NGLI #2 grease for lubrication

Use compatible grease for lubrication

Was the lubrication process completed successfully?