Loren Cook Company Ventilation Fan 245SQN-B

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 motor bearings grease lubricated ball or roller bearings?

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

Disassemble and lubricate the bearings

Inspect bolts and setscrews for tightness

Inspect belt wear and alignment

Inspect bearings as recommended in the Conditions chart

Remove dust and grease on motor housing to assure proper motor cooling

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

Fill the bearings with grease or moisture-inhibiting oil if the fan is stored for any length of time prior to installation.

Refer to Lubricants on page 5 for guidance.

Ensure the fan is stored properly

Inspect belt alignment and tension

Adjust and tighten belt as necessary