Profire V Burner Chapter 2
750-177 2-45
4. After making note of where the bolts are located in relationship to the access cover slots, remove the drawer assem-
bly access cover bolts. Pull the drawer partially out of the housing. Reach inside todisconnect the ignition cables
from the electrodes for direct spark applications. Pull the drawer assembly completely out of the housing.
5. To reinstall the drawer assembly, insert it part way into the housing, connect the ignition cables, if applicable, and
seat the assembly fully. Install the access cover bolts loosely. Slide the cover into the original location and tighten
the bolts. Reconnect the fuel lines.
PILOT AND IGNITION ELECTRODE
Failure to keep the ignition electrode clean and properly set can cause faulty operation. Not only must the gap
be correct, but the electrode points must be carefully located with respect to the nozzle. Sometimes difficulty
in securing the electrodes in their clamps can be corrected by using light metal shims around the porcelain.
Defective or cracked porcelains require replacement to prevent short circuiting of the spark. A gradual wearing
away of the electrode tips may require re-spacing of the points or replacement of the electrode.
The pilot should be checked monthly for loosening of components and carbon buildup. Before removing the
pilot, ensure that the fuel supply is shut off.
On direct spark oil units, once the drawer assembly has been removed, check the electrode to nozzle gap and
adjust if necessary.
For burners equipped with a gas pilot, the pilot is located on the side opposite to the main gas entrance.
1. Close the gas pilot cock.
2. Disconnect the pilot gas supply line.
3. Remove the screws on the pilot access plate.
4. Disconnect the pilot gas supply line.
5. Remove the screws on the pilot access plate.
6. Disconnect the high voltage ignition cable by pulling it straight back, away from the pilot assembly.
7. The pilot gun assembly will slide back away from the flame side of the burner.
8. Once the pilot assembly is clear of the burner head bracket, turn the pilot assembly and retract it through the
access hole.
9. Inspect the electrode and adjust the gap if necessary.
10. Thoroughly clean and adjust the porcelain insulated electrodes.
11. Correct all variations from the clearance dimensions.
12. If the insulation on the high voltage cables becomes cracked or charred, install new cables. Ignition cable should
not be exposed to moisture, abrasion, or rough handling.
13. See that the connectors are in perfect contact with the cable end. Unscrewing the snap portion of the connector will
show whether this is true.
FLAME SCANNER
The scanner must be clean. Even a small amount of contamination will reduce the flame signal. Wipe the
scanner lens with a clean soft cloth. Check pilot and flame signal strength.
To insure proper atomizing, the tip must be screwed in tightly with the swirler seating spring pressing the
swirler tight against the nozzle tip. Turn the swirler a few times to be sure it fits snugly in the nozzle and the
spring is pressing the two parts firmly together. When reinstalling, be sure the nozzle is centered with the
proper distance from the diffuser.
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