MODINE Duct Furnace DFS075SFRHN10A1

Filter Inspection and Maintenance

Does the unit have a dirty filter warning light?

If the dirty filter light is on, clean or replace the filters.

Check filters if there is no dirty filter warning light.

Clean or replace filters if necessary.

Is the unit operating in a dirty atmosphere?

Describe any additional filter maintenance required due to dirty atmosphere.

Remove the burner side access panel

Disconnect gas manifold at ground union joint

Remove the screws holding the manifold to the heat exchanger support

Slide the manifold through the manifold bracket

Remove the burner side access panel

Remove the screws holding the burner side access panel

Disconnect the pilot supply line from the gas valve

Disconnect the ignition cable from the ignition controller

Blower Bearings Inspection and Maintenance

Check blower bearings for the following issues

Replace bearings if unusual wear is detected

Drive Sheaves and Belts Inspection

Inspect drive sheaves for alignment and wear

Check belts for tension and wear

Are the belts in good condition?

Ensure the unit is free from dust, dirt, grease, and foreign matter

Check the burner port and pilot burner orifice

Check the air shutters and main burner orifices

Is the unit operating normally after maintenance?