Loren Cook Company Ventilation Fan 135SQN-HP

Ensure all accessories are installed and blower is secured to ductwork

Inspect wheel-to-inlet clearance and ensure wheel does not rub against the inlet

Test fan for correct wheel rotation as indicated by rotation label

Inspect for correct amperage with an ammeter

Inspect for correct voltage with a voltmeter

Lock out all primary and secondary power sources

Check for specialized lubrication instructions on fan labels.

Is the fan in operation during lubrication?

Pump grease 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)

Adjust greasing interval based on conditions

Motor Bearings - Standard Service Conditions, NEMA Frame Size 404T & larger

Is the motor installed vertically?

Motor Bearings - Severe Service Conditions, NEMA Frame Size up to & including 184T

Is the motor installed vertically?

Motor Bearings - Severe Service Conditions, NEMA Frame Size 213T-365T

Inspect and adjust as necessary

Tighten all inspected components if necessary

Verify belt and pulley installation prerequisites

Loosen motor plate adjustment nuts on L-bolts

Move motor plate to allow belts to slip into pulley grooves

Adjust motor plate for proper belt tension (1/4” deflection per foot of center distance)

Lock motor plate adjustment nuts in place

Ensure pulleys are properly aligned