Engineered Air HVAC Unit HE100/O

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

Check for any remaining contamination on the viewing area

Note any issues or observations during cleaning

Refer to the UV scanner manufacturers’ literature for additional information

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 no high pressure steam or water is used for cleaning

Verify 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

Lubrication of Dodge Fan Bearings — Ball Bearing Pillow Block

Select the shaft diameter and speed (RPM) for lubrication schedule

Is it safe to re-lubricate while running?

Re-lubricate while running until some purging occurs at seals

Adjust lubrication frequency based on purged grease condition

Note hours of operation, temperature, and surrounding conditions

Select the grease type used for lubrication

Lubricate bearings prior to extended shutdown or storage

De-energize the control system.

Close the upstream manual gas valve.

Connect a ¼” (6mm) tube to the outlet pressure tap on the safety shutoff valve.

Immerse the opposite end of the ¼” (6mm) tube vertically ½” (13mm) into a clear container of water.

Count the number of bubbles appearing during a 10 second period.

Is the bubble rate greater than that noted in the manufacturer’s table?

If the bubble rate is greater than that noted in the manufacturer’s table, repair or replace the valve.

If bubble rate is less than noted in the table, remove the ¼” (6mm) tube, reconnect the outlet pressure tap plug.

Outdoor Air Intakes, Mixing Sections and Dampers

Check outdoor air intakes for cleanliness

Verify proper operation of adjacent areas