Engineered Air HVAC Unit HE401/O

Check set screws for looseness on the shaft

Tighten set screws where required

Record any issues or observations

Refer to motor manufacturer for lubrication recommendations

Remove grease drain plugs and operate motor for 15 minutes before replacing plugs

Ensure not to over grease the motor

Select the motor lubrication interval based on service hours

Note any severe conditions affecting motor lubrication and follow manufacturer specifications

Check pulley alignment to within 1/16” per foot (1mm per 760mm) of span.

Verify that the V-belt rides the inside of the pulley faces for fans with spider brackets.

Measure belt deflection for each foot (300mm) of span between the pulleys.

Measure belt deflection for fans with pillow block bearings.

Is the belt tension as loose as possible without slipping in the pulley grooves?

Ensure belts are of the proper type and size

Determine filter-changing intervals based on

Enter the scheduled interval in months

Does the unit operate with high levels of outside air?

Check for plugged or excessively dirty filters

Verify filter quantities, sizes, and types from submittal record

Use same size and type for replacement

Check and clean High Velocity Permanent filters

Check if the fan has permanently lubricated sealed ball bearings

Ensure bearings are factory packed 30 to 50% full

Grease bearings that require lubrication while rotating slowly

Use lithium base lubricant only

Check for extended lubrication lines

Ensure tubing is not factory filled

Select shaft diameter for grease quantity