Engineered Air HVAC Unit DJ100/O

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

Adjust the slide damper for seasonal operation

Outdoor Air Intakes, Mixing Sections and Dampers

Check the following for cleanliness, integrity, and proper operation

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

Note any severe conditions affecting motor operation

Select motor lubrication interval based on service hours per day

Check that the following conditions are met before lubrication

Is the bearing sealed and permanently lubricated?

Ensure the bearing is rotating slowly before lubrication

Select the shaft diameter to determine grease quantity

Use lithium base lubricant for greasing

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

Lubrication of Dodge Fan Bearings — Spherical Roller Bearing, Solid Pillow Block

Select shaft diameter and speed (RPM) for lubrication schedule

Select RPM for lubrication schedule

Re-lubricate while running until some purging occurs at seals, if safety permits

Adjust lubrication frequency based on condition of purged grease

Lubricate with a multipurpose roller bearing NLGI No. 2

Lubricate bearings prior to extended shutdown or storage

Rotate shaft monthly to aid corrosion protection