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)
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 car-
bon, oil, dirt, pinhole leaks, cracks, moisture and evidence
of over-the-surface arc tracking. Otherwise, short circuiting
could cause ignition problems. If any of these conditions exist,
replace with new porcelain insulators.
• If a need for service or replacement is determined, see in-
structions on page 31.
5.
Reassemble
• Check the gasket. If in tact, position it over the studs. If dam-
aged, 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
WARNING: Turn off the electric power before remov
-
ing the fuel line assembly.
NOTE: In order to service the fuel line assembly controls and spark
electrodes, 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.
