Reznor RA 140 Troubleshooting Guide download pdf (Page 30)

Form I-RA/D 140/235 (Version A), Page 30

Removing Fuel Line Assembly to Service Controls and

Spark Electrodes (Alternate method for servicing nozzle)

WARNING: Turn off the electric power before removing the fuel line assembly.

Escutcheon Plate

Maintenance

Procedures

Continued

• Clean nozzle by disassembling, washing thoroughly, and blowing

dry with compressed air.

• If nozzle face appears worn, replace the oil nozzle with P/N

102997. Annual nozzle replacement is recommended. This nozzle is

custom designed. Do not substitute nozzle.

• Replace the end cone.

NOTE: Be sure NOT to damage the “O” ring on the nozzle. If the “O”

ring appears damaged, replace the nozzle.

4. Inspect the Electrodes

• The electrode porcelain insulators must be free from carbon, oil,

dirt, pinhole leaks, cracks, moisture and evidence of over-the-

surface arc tracking. Otherwise, short circuiting could cause igni-

tion problems. If any of these conditions exist, replace with new

porcelain insulators.

• If a need for service or replacement is determined, see instructions

on page 31.

5. Reassemble

• Check the gasket. If in tact, position it over the studs. If damaged,

replace with like replacement.

• Line the burner up with the studs and slide the tube into the heater.

• Using the nuts and washers, attach the burner mounting flange.

• Re-connect the yellow wires to the ignition controller.

Removing Burner

and Cleaning End

Cone, Nozzle and

Electrodes Con-

tinued

NOTE: In order to service the fuel line assembly controls and spark elec-

trodes, it is necessary to remove the fuel line assembly.

Removing the Fuel Line Assembly

1. Loosen the connection nut one or two turns.

2. Disconnect the fuel connection assembly by loosening the 5/16”

inverted flare fitting. Do not change the position of the escutcheon

plate.

• Pull the fuel connection assembly clear of the burner housing.

3. Loosen the two transformer hold-down screws.

• Lift the hinged transformer to its open position.

4. There are eight wires in the fuel line assembly wire bundle.

• Mark and disconnect the wires from their terminals in the burner

junction box.

5. Disconnect the nozzle air hose from the fitting at the air compressor.

• Pull the hose through the opening “into” the burner housing.

1 2 ... 25 26 27 28 29 30 31 32 33 34 35 ... 51 52

Comments to this Manuals

No comments

Reznor RA 140 Troubleshooting Guide Page 30

Comments to this Manuals

Related products and manuals for Space heaters Reznor RA 140