750-392
CBEX-DE
5-7
Removing Burner Drawer
5.7 — Removing Burner Drawer
Before removing the burner drawer:
• Shut off gas supply and disconnect pilot gas piping [1].
• Disconnect the plug from the pilot igniter rajah connector [2]. The ceramic insulator [3] on the pilot is fragile;
handle with care.
• Remove flame scanner [5].
• For oil fired or combination units, remove the oil gun. Disconnect the oil drawer switch by removing the cap
screws in the damper back plate.
• Unplug cables from damper actuator [6] or disconnect wiring if hard-wired.
• For single point controls document and record positions of linkage and remove the linkage arm.
NOTE: Do not remove the actuator unless air damper inspection is scheduled. If the damper actuator is
removed, actuator will need to be re-aligned and combustion must be re-set by a qualified C-B technician before
the boiler is returned to operation.
FIGURE 5-2. Preparations for removing burner drawer
5.8 — Oil Burner Maintenance
The burner should be inspected for evidence of damage due to improperly adjusted combustion. Any soot buildup
on the diffuser or the oil nozzle should be removed. The positioning of the oil nozzle in relation to the diffuser and
other components is important for proper firing and should be checked.
!
Warning
Observe lockout/tagout procedures
prior to disassembly.
[6]
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[4]
[5]
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