c. If the ame signal does not drop out as required, check
the location of the pilot and scanner, as shown in Figure E-1.
This may also indicate a faulty scanner or amplier.
15. Burner Shutdown
Normal operation of the burner will allow the operating con-
trols to shut the burner down when the load demand is sat-
ised. If the burner needs to be shut down for any reason,
the “ON-OFF” switch can be used to quickly turn the burner
off. This will instantly cause the fuel valves to close and
start a post purge cycle to remove any unburned fuel from
the vessel.
In an emergency shutdown, all fuel and electrical power
should be de-energized or turned off to secure the burner.
This would include the main power disconnect, the manual
gas shutoff valve at the drop down line and if equipped, the
manual oil valve to the nozzle.
It is recommended that the burner be manually driven to low
re before turning the burner off, as this reduces the dynam-
ic and thermal stress. If the burner will remain off for some
time, the manual fuel valves, fuel pumps and power supply
should be turned off.
CAUTION
ALWAYS KEEP THE FUEL SUPPLY VALVE SHUT OFF WHEN THE
BURNER IS SHUT DOWN FOR AN EXTENDED PERIOD OF TIME.
16. Restarting after Extended Shutdown
Extended shutdowns require the same startup process as
those outlined above. In addition, the following advanced
cleaning must be done,
a. The oil nozzle should be removed and cleaned. Use care
in cleaning to preserve the sharp edges of the nozzle, which
are required to maintain good atomization.
b. The oil lter and strainer must be removed and cleaned
prior to starting.
CAUTION
DO NOT START THE BURNER UNLESS ALL CLEANOUT DOORS
ARE SECURED IN PLACE.
Page 48
Section F - Startup and Operating Instructions
JBE(X) Manual
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