CONTROL PROGRAMME UNDER
FAULT CONDITIONS AND LOCK-
OUT INDICATION
In the event of fault conditions the
sequence switch stops and simul-
taneosly the lock-out indicator. The
symbol appearing above the reading
mark indicates kind of fault:
No start,
because e.g., the CLOSE
signal has not been supplied to
terminal 8 by the limit switch, or a
contact has not been closed
between terminals 4 and 5.
Shut-down of start-up sequence,
because the OPEN signal has not
been supplied to terminal 8 by the
limit switch. Terminals 6, 7 and 15
remain under voltage until the fault
is corrected.
Lock-out
due to a fault in the super-
vision circuit.
Shut-down of start-up sequence,
because the position signal for the
low-flame position has not been
supplied to terminal 8 by the
auxiliary switch. Terminals 6, 7
and 15 remain under voltage until
the fault is corrected.
Lock-out,
because no flame signal
has been received on completion of
the saftey time.
Lock-out,
because the flame signal
has been lost during burner
operation or air pressure failure has
occurred.
Lock-out on completion or after
completion of control pro-
gramme sequence
due to
extraneous light (e.g. flame not
extinguished, leaking fuel valves)
or due to a faulty flame signal (e.g.
fault in flame supervision circuit or
similar).
a - b
Start-up sequence
b - b´
"idle steps"
up to the self shut-down of the sequence
switch
b ( b´) - a
Post-purge sequence
171 425 36 00-01
ELECTRIC EQUIPMENT
OIL BURNER CONTROL: LAL3...
FUNCTION
1.
Switch on operating switch and twin thermostat
The burner motor starts, an ignition spark is formed, the prepurge goes
on till the prepurge period expires and the solenoid valve 1 opens (2).
2.
Solenoid valve 1 opens
Oil mist is formed and ignited. The photocell indicates a flame.
3
The safety time expires
a. If there is no flame established
before
this time limit the burner
control locks out.
b. If the flame for some reason disappears
after
this time limit the
burner control also locks out. If a repetition of the start-up sequence
is desired, the wire link marked "Repetition" on the side of the base
plate of th control must be removed.
4.
Full load thermostat ON
The ignition spark goes out 2 s after flame indication when the ignition
transformer is connected to terminal 7. The burner is in operating
position and can now change between high and low capacity.
5.
Operating position
If the burner operation is interrupted by means of the main switch or the
thermostat, a new start takes place when the conditions in accordance
with point 1 are fulfilled.
The control locks out
A red lamp in the control is lit. Move the transparent cover aside and
restart the burner by pressing the reset button.
Note! In the window of the control symbols appear showing in which
position the control locks out , see the adjoining explanation.
TECHNICAL DATA
Pre-ignition time:
from start
Pre-purge time with full air volume:
22 s
Safety time:
5 s
Post-ignition time:
15 s
Interval between Mv1 and Mv2:
7,5 s
Reset after lock-out:
Immediately
Time of re-start:
47 s
Ambient temperature:
- 20 to + 60°C
Min. required current at 220 V and 240 V respectively:
95/105 µ A
Max. current:
160 µ A
Protective standard:
IP40
a
b´
b
Summary of Contents for Bentone B60-2FH
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