Loren Cook Company AC Exhauster ACW-B

Warning: This procedure requires trained personnel with PPE!

Is the motor a Direct Drive 1050/1075,1200,1300 &1500 rpm unit?

If yes, proceed with the following steps. If not, skip to step 7.

Has the unit been stored for a year or more?

Enter the number of LIGHT grade mineral oil or SAE 10W oil drops added (up to 30 drops)

Sign off on the lubrication of Direct Drive 1050/1075,1200,1300 &1500 rpm units

Does the motor have grease lubricated ball or roller bearings without provisions for relubrication?

If yes, contact the maintenance department to disassemble and lubricate the bearings. If not, proceed to step 10.

Sign off on the maintenance department's lubrication of grease lubricated ball or roller bearings without provisions for relubrication

Warning: This procedure requires trained personnel with PPE!

Burrs removed from the shaft by sanding

New bearings slid onto the shaft and loosely mounted onto the bearing support

Wheel correctly positioned and bearing bolts securely tightened to the bearing support

Setscrews aligned bearing to bearing and secured tightly to the shaft

NOTICE! Never tighten both pairs of setscrews before securing bearing mounting bolts. This may damage the shaft.

Wheel position inspected again and readjusted if necessary

Sign off on the fan bearing replacement

Warning: Stop the fan before inspection

Bolts inspected and tightened as necessary?

Setscrews inspected and tightened as necessary?

Motor mounting bolts inspected and tightened as necessary?

Inspection of the fan should be conducted at the first 8 hour interval of satisfactory operation.

During the inspections, stop the fan and inspect as instructed.

Inspect belt alignment and tension. Adjust and tighten as necessary.;

NOTICE! The fan bearings are provided prelubricated. Any specialized lubrication instructions on fan labels supersedes information provided herein.

Bearing grease is a petroleum lubricant in a lithium base conforming to a NLGI #2 consistency. If user desires to utilize another type of lubricant, they take responsibility for flushing bearings and lines, and maintaining a lubricant that is compatible with the installation.

A NLGI #2 grease is a light viscosity, low-torque, rust-inhibiting lubricant that is water resistant. Its temperature range is from -30°F to 200°F and capable of intermittent highs of 250°F.

Bearings should be relubricated in accordance with the condition chart. See Condition Chart.

For best results, lubricate the bearing while the fan is in operation. Pump grease in slowly until a slight bead forms around the bearing seals. Excessive grease can damage seal and reduce life through excess contamination and/or loss of lubricant.

Did a slight bead form around the bearing seals?

In the event that the bearing cannot be seen, use no more than three injections with a hand operated grease gun.