Form I-RA/D 140/235 (Version A), Page 32
Cleaning Oil Pre-Heater System
WARNING: Turn off the electric power and allow the
pre-heater to cool before servicing.
1. Remove the Burner
• Locate the two yellow wires that go from the burner to the
ignition controller. Disconnect these wires at the terminals on
the ignition controller.
• Remove the three nuts and washers that retain the burner to
the heater. Slide the burner off the bolts and rotate.
Maintenance
Procedures
Continued
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 as
-
sembly.
• Tighten the 5/16” inverted flare nut firmly. Then tighten the
connection nut. Do not move the escutcheon plate.
• Check the spacing between the oil nozzle and the end cone.
Refer to Electrode Adjustment” #4 (page 31).
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 heater.
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
2. 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.
