UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES - QUARTERLY SCHEDULE (CONT)
Item to be
Inspect nozzle holder and ignition plug. Disassemble nozzle
and clean screen on nozzle with dry cleaning solvent (item
14, app D). Check that the gap between the ignition plug
electrode and the combustor-plate electrode is 5/32-inch.
Do not bend ignition plug electrode.
Adjust as needed by bending the combustor plate elec-
trode. Replace plug if unserviceable. Replace burner nozzle
Inspect the condition of the spark arrester in the exhaust
stack for possible damage to the screen. If screen is torn or
has puncture holes, replace spark arrester.