Loren Cook Company AC Exhauster 165ACEB

1. Clean the motor and fan shafts.

2. Loosen the motor plate mounting bolts to relieve the belt tension. Remove the belt.

3. Loosen the pulley setscrews and remove the pulleys from the shaft. If excessive force is required to remove the pulleys, a three-jaw puller can be used. This tool, however, can easily warp a pulley. If the puller is used, inspect the trueness of the pulley after it is removed from the shaft. The pulley will need replacement if it is more than 0.020 inch out of true.

4. Clean the bores of the pulleys and place a light coat of oil on the bores.

5. Remove any grease, rust or burrs from pulleys.

6. Place the fan pulley on the fan shaft and the motor pulley on the motor shaft. Damage to the pulleys can occur when excessive force is used in placing the pulleys on their respective shafts.

7. After the pulleys have been correctly placed back onto their shafts, tighten the pulley setscrews.

Warning: Handle the AC fan and accessories with care during inspection

AC fan and accessories free of damage

AC fan wheel turns freely and does not bind

Dampers (if included) have free operation of all moving parts

Record any visible sign of damage on the Delivery Receipt

Sign off on the initial AC fan inspection

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?

Is the unit in severe conditions?

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

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

If yes, proceed with the following steps. If not, skip to step 11.

Is the motor in severe applications, high temperatures or excessive contaminates?

Warning: This procedure requires trained personnel with PPE!

The correct wheel-to-inlet clearance is critical to proper fan performance.

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

Adjust the overlap by loosening the wheel hub and moving the wheel along the shaft to obtain the correct value.

Check if the wheel hub has been loosened and the wheel moved along the shaft.

A uniform radial gap is obtained by loosening the bearing bolts and set screws which will allow for correct repositioning.

Check if the bearing bolts and set screws have been loosened.

Sign off on the Fan Wheel-to-Inlet Clearance Adjustment

It is recommended the following inspections be conducted twice per year.

• Inspect bolts and setscrews for tightness. Tighten as necessary. Refer to Torque chart.

• Inspect belt wear and alignment. Replace worn belts with new belts and adjust alignment as needed. Refer to Belt and Pulley Installation, page 4.

• Bearings should be inspected as recommended in the Conditions Chart.

• Inspect for cleanliness. Clean exterior surfaces only. Removing dust and grease on motor housing assures proper motor cooling.;