Loren Cook Company Ventilation Fan 300SQN-B

Remove pulleys from their respective shafts

Clean bores of pulleys and coat the bores with heavy oil

Remove grease, rust, or burrs from the pulleys and shafts

Remove burrs from shaft by sanding

Place fan pulley on fan shaft and motor pulley on its shaft

Install belts on pulleys and align as described in Belt and Pulley Installation

Cover openings to prevent dirt and moisture accumulation

Periodically rotate the wheel and operate dampers to maintain grease coating on internal bearing parts

Periodically inspect the unit to prevent damaging conditions

Check for specialized lubrication instructions on fan labels.

Is the fan in operation during lubrication?

Enter the number of grease injections used (if bearing cannot be seen).

Is the installation moist or contaminated?

Is the shaft installation vertical?

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

Inspect belt alignment and tension

Adjust and tighten belt as necessary

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