Engineered Air HVAC Unit HE20

Determine filter-changing intervals based on

Record the pressure drop across the filter

Is the filter excessively dirty or plugged?

Remove or relocate filters for units with high levels of outside air during winter months

Check and clean High Velocity Permanent filters

Rinse High Velocity Permanent filters with water and shake off excess water

Re-install High Velocity Permanent filters

Obtain replacement Pleated Throwaway and/or Replaceable Media filters from Engineered Air representative

Select the SAE value based on operating temperature

Measure the oil’s operating temperature

Is the oil level at the center of the lower-most roller?

Perform complete lubrication change

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

Wipe the viewing area with a soft cloth dampened with concentrated detergent

Check for any remaining contamination on the viewing area

Refer to the UV scanner manufacturers’ literature for additional information

WARNING — High Voltage and Moving Parts

Disconnect and lock out power before servicing

Ensure no interlock or safety switches are bypassed

Follow cleaning instructions to reduce risk of mold or bacterial growth

If mold or biological growth is present, describe the cause and actions taken

Properly remove and dispose of contamination if present

Clean and sanitize affected area using approved sanitizers

Maintain a maintenance file for each unit