Dunham-Bush Modular Central Station Air-Handling Unit CS3-48

Deep Grooved Ball Bearing Check

Is the fan equipped with a deep grooved ball bearing inserted in a rubber damper?

Verify that the bearing has sufficient high-grade grease sealed in at the time of manufacture.

Pillow Block Housing Lubrication

Does the pillow block housing have a lubrication point?

Refer to the manufacturer's table for greasing interval and grease amount.

Lubricate the pillow block housing as per the manufacturer's recommendation.

Check for evidence of corrosion or peeling on painted surfaces.

Clean and retouch areas with corrosion or peeling.

Blower Wheel and Housing Inspection

Tighten the blower wheel set screws.

Inspect wheels and housings for evidence of corrosion.

Retouch corroded areas if necessary.

Wash down the coil fin surfaces to eliminate dirt, lint, or other foreign matter.

Inspect the current filter for visible dirt and debris

Install the new filter ensuring the following

Is the new filter properly installed?