Engineered Air HVAC Unit HE100

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 per day

Check if the motor runs in severe conditions and grease as specified by the manufacturer

Is the bearing rotating slowly during lubrication?

Is a lithium base lubricant being used?

Avoid overgreasing the bearings

Select shaft diameter for grease quantity

Are extended lubrication lines provided?

Refer to fan and/or bearing manufacturers’ literature for additional information

Verify the SAE value of the oil based on operating temperature

Measure the oil’s operating temperature

Is the oil viscosity at least 100 SSU at the operating temperature?

Ensure the static oil level is at the center of the lower-most roller

Perform complete lubrication change

Inspect coils and drain pans for cleanliness and biological growth

Clean the external surface of finned coils using a low pressure water spray and a brush

Ensure cleaning additives or solutions are compatible with coil materials or coatings

Use a fin comb to straighten any damaged or bent fins

Drain and blow out water coils with compressed air

Fill and drain coils several times with appropriate strength pre-mixed inhibited HVAC glycol or other suitable fluid

Ensure propylene glycol is not used with CPVC piping

Check for proper operation of controls

Repair or replace faulty controls

Were all fuses replaced with equivalent size and type?