HDT Camfire CV125CG, Operation Manual

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G. Burner Removal, Cleaning & Replacement
1. Be sure the heater is disconnected from the power source, Open the access door in the upper shell, then
remove the lead wire from the spark plug. Remove fuel line assembly from burner head. Disconnect the air line
from the fitting in the right side of the nozzle adapter.
2. Remove the photocell assembly from its bracket. Then remove the screws that fasten the burner head to the
combustion chamber and remove the burner head.
2. Remove the nozzle carefully, using a socket wrench. Hold the nozzle adapter with another wrench while
removing the nozzle.
Figure 5 Cleaning Nozzle with Compressed Air
CAUTION: Do not attempt to open the nozzle passage with a steel drill, a wire, or any other tool. Any change in the
nozzle opening will alter the flow characteristics which will affect the heater’s performance. If solvent and reverse
air flow through the nozzle cannot remove the contamination, replace the nozzle. Always protect the nozzle face
whenever the burner head is removed from the heater.
4. Soak the remaining parts of the burner head assembly for one hour in non-flammable liquid cleaning agent. (Do
not use gasoline, kerosene or fuel oil.) Blow dry through fittings in rear of burner. Blow the nozzle dry through the
face (outlet) end only. See Figure 6.
5. When reinstalling the burner, place it on the back of the combustion chamber so the fitting for the fuel filter is
down, and the spark plug is just above center, on the right. Install the attaching screws and hardware.
6. Connect the fuel filter assembly and the air line from the filter housing to its’ respective fittings on the nozzle
adapter.
7. Reinstall the photocell, then install the spark plug and snap the spark plug lead onto the terminal. It must snap,
or it may not be tight enough to prevent loosening as the heater is moved.
CAUTION:
Do not attempt to repair the nozzle. If the nozzle is defective, replace it.
H. Post Maintenance Assembly
1. Put the heater back together in the reverse order of disassembly. Be sure all parts are in place and all screws
and electrical connections are tight before attempting to use the heater.