MODINE Heater BDP 175

Lower bottom pan to expose burner and manifold (see fig. 16.2)

Disconnect pilot tubing and thermocouple lead (or ignition cable) at the combination gas control (and ignition control)

Disconnect control wires for the combination gas control

Disconnect gas manifold at ground union joint

Remove the 2 screws holding the manifold to the heat exchanger support

Check the motor for lubrication if the motor is not perminatly lubricated.

Inspect the fan for damage and fit on motor shaft. Clean any dust, dirt or foreign matter from the fan blades.;

Blower Bearings Inspection and Maintenance

Check blower bearings for unusual wear

Lubricate blower bearings as per manufacturer's recommendations

Replace blower bearings if needed

Check alignment of drive sheaves

Ensure drive sheaves are securely fastened

Lower bottom pan to expose burner and manifold

Disconnect pilot tubing at the combination gas control

Disconnect thermocouple lead or ignition cable at the combination gas control

Keep the unit free from dust, dirt, grease, and foreign matter.

Combustion Air and Exhaust Vent Piping

Inspect the combustion air and exhaust vent piping for cleanliness.

Burner Ports and Pilot Burner Orifices

Inspect the burner ports and pilot burner orifices for cleanliness, avoiding hard, sharp instruments.

Refer to Burner and Pilot Assembly Removal for detailed inspection steps.

Air Shutters and Main Burner Orifices

Inspect the air shutters and main burner orifices for cleanliness, avoiding hard, sharp instruments.