RGM 465, Mfg No. 175758, Page 31
Cleaning Oil Pre-Heater System (U.S.
Patent No. 5,080,579)
WARNING: Turn off the electric power and allow the
pre-heater to cool before servicing.
1.
Remove the Pre-Heater from the Pre-Heater Box
•
Remove the corner panel from the end of the box. The pre-heater
controls are visible.
•
Disconnect the fuel lines at the inlet and outlet connections.
NOTE: There will be oil in the lines.
•
Disconnect wires to the temperature controls.
•
Disconnect the heating element wires.
•
Remove the screw that attaches the pre-heater front support to the
bottom of the box.
•
Slide the cylindrical aluminium pre-heater out of the box.
3.
Clean the Pre-heater
•
Place the pre-heater in a vice and carefully remove the outer cylin-
der and the “O” ring. NOTE: There will be oil in the pre-heater.
•
Clean the inner section with a cloth and degreaser such as carbure-
tor cleaner. Be careful not to “clean” the electrical controls. Do not
immerse in cleaning fluid.
Reassembling the Fuel Line Assembly
1. To reassemble the Fuel Line Assembly
•
Slide the fuel line assembly into the burner housing and the burner
tube.
2. Connect the fuel connection assembly to the fuel line assembly.
•
Tighten the 5/16” inverted flare nut firmly. Then tighten the con-
nection nut. Do not move the escutcheon plate.
•
Check the spacing between the oil nozzle and the end cone. Refer
to Electrode Adjustment, page 30.
3. Connect the eight wires in the fuel line assembly wiring bundle. Refer to
the wiring diagram in the Appendix of this manual or the wiring diagram
on the boiler.
4. Push the air line hose out through the burner housing and reconnect it to
the air compressor.
5. Close the spark transformer cover and attach with the two screws. Be
certain transformer clips make contact with the electrodes.
NOTE:
Once assembly is in place, verify that the nozzle, end cone, and
electrodes are correctly located.
Pre-Heater
Box
Pre-Heater
Controls
