Loren Cook Company Ventilation Fan CPV 165

Check for severe application conditions

Verify the operation of the motor

Ensure all necessary tools are available

For Arrangement 1, 2, 8, 9 and 10

Mark the position on the shaft of both bearing races, setscrews, and the wheel and pulley

Mark the location and orientation of the inlet cone

Note the clearance between the wheel and inlet cone

Remove the fan pulley and inlet cone

Remove the wheel from the shaft

Remove bearing hold-down bolts and remove shaft and bearings as one unit

Ensure all belt driven fans with motors up to and including 5HP are equipped with variable pitch pulleys

Loosen setscrew on driver (motor) pulley and remove key, if equipped

Turn the pulley rim to open or close the groove facing

If the pulley has multiple grooves, ensure all are adjusted to the same width

Inspect for proper belt tension after adjustment

Select the desired speed adjustment

Ensure RPM limits of the fan and horsepower limits of the motor are maintained

Lubrication — Fan Bearings (Normal Conditions)

Check shaft size and operation hours

Is the fan operating under higher temperature conditions?

Is the fan operating with a vertical shaft?

Clean the grease nipple and immediate vicinity thoroughly without high pressure equipment

Lubricate the bearing while the fan is in operation

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

Is the bearing visible during lubrication?

Number of grease injections used with hand-operated grease gun (if bearing is not visible)

Loosen motor plate adjustment bolts and move motor to slip belts into pulley grooves

Slide motor plate back to achieve proper belt tension (1/4” deflection per foot of center distance)

Lock motor plate adjustment bolts in place

Ensure pulleys are properly aligned

Loosen motor pulley setscrew to adjust alignment

Measure the allowable gap for drive alignment tolerance at contact points WXYZ

Select the center distance range for tolerance check