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AALBORG
INDUSTRIES
Language UK
EMERGENCY OPERATION OM5560_75#A.2
Step D: Press the "AIR SERVO LOAD UP" push button until the burner reaches its
maximum firing position to purge the furnace. The pre-purge time should
be minimum 60 seconds.
Warning: Insufficient purging
may
cause
danger
of
furnace explosions.
If
the
operator
suspects
that
there
is
a risk
of
an
oil spillage in
the
fnrnace,
it
must
be .completely dried
out
before
start
of
the
burner
is
attempted.
Step E: When the'furnace has been sufficiently purged press the "LOAD DOWN"
p,ush
button until the burner reaches its minimum firing position.
Step F: Press the "IGNITION" push button and keep it pressed. The ignition trans-
former is energised.
Step G: Press the "OIL VALVES" push button and keep it pressed. At the same time
the safety valves open.
Step H: Release the "IGNITION" and "OIL VALVES" push buttons when the lamp
"FLAME"is illuminated.
If
the flame
is
not established within maximum 5
seconds, immediately return to step
E.
Step I: When the flame
is
established the burner remains firing at minimum load.
The burner load can be changed by pressing the push buttons "LOAD
DOWN" and "LOAD UP" for both air servomotor and oil servomotor.
Note:
If
the flame is distinguished
during
operation, immediately
return
to
step
D.
If
the
flame cannot be established in the following
attempt,
please see
the section
for
faults
and
rectifying faults.
Note:
The
automatic
water
level regulation
is
not operational in emergency
mode. This means
that
the
water
level in the boiler must be
adjusted
man-
ually.
Step
J:
In boiler plants with on/off regulation
of
the water level, one
of
the feed
water pumps should be started and stopped according to the water level in
the boiler.
Step K: In boiler plants with modulating control
of
the water level, one
of
the feed
water pumps should be started. The water level can then be regulated on the
feed water control valve by
means
of
the manually operated hand wheel on
the actuator.
2.1.2 Stop
of
the
burner
Step
A:
Press the "STOP" push button inside (or mounted on the front
of)
the local
control panel
to
stop the burner. The safety valves immediately close.
Step B: Switch the selector "BURNER MOTOR"
to
position "OFF" inside (or
mounted on the front
of)
the control, panel to stop the burner motor.
21-45/60
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