elco N6.2400 G-R, Руководство по эксплуатации

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10/2010 - Art. Nr. 4200 1030 6900A 25
Servicing
Operating trouble
In case of operating trouble it should
be checked whether the system is in
proper working order.
Make a check for the following:
1. Availability of fuel. Availability of gas
in the line at sufficiently high
pressure. Availability of fuel oil in the
tank (for dual fuel burner). Correct
position of fuel selector switch.
2. Availability of electric power in the
burner system.
3. Proper functional order and setting of
all control and safety instruments
such as temperature controller,
safety limiter, water failure cut-out,
electrical limit switches, etc. If the
trouble is not found to be due to any
of the above-mentioned points it will
be necessary to test the burner
functions very carefully.
Prevailing conditions:
The burner will be found to be out of
operation and in faulty and interlocked
position.
Proceed with searching for the cause of
the trouble and eliminate it. Unlock the
automatic furnace controller by pressing
the fault eliminate key and start the
burner.
Do not press the fault eliminate key
longer than 10 seconds.
The start-up program will be initiated
and should be carefully monitored.
The possible cause of the fault may be
quickly found by reference to the fault
indicator of the automatic furnace
controller and watching the start-up and
operating program.
Control program in the case of
trouble and fault indicator LFL 1... /
LGK...
a - b Starting program.
b-b' In a number of time versions; idle
steps of the program unit to self-
stop after burner start-up
(b' = operating position of program
unit).
b(b')-aAfter-flushing program after
regular stop. In the starting
position „a“ the program unit will
automatically stop or initiate an
immediate restart of the burner,
e.g. after a fault has been
eliminated.
•
Duration of the safety period for
single-tube burners.
••
Duration of the safety period for
burners with ignition gas valve.
Basically, any type of trouble will
result in the immediate stop of the
fuel supply.
At the same time, the
program unit and consequently the fault
indicator will stop. The type of trouble
can be identified by the symbol opposite
to the reading mark of the indicator:
No start, e.g. because the
„CLOSED“ signal from the „Air
Damper CLOSED“ limit switch is
missing or a contact is not closed
between terminals (12) and (4) or
(4) and (5); or the contacts of all
control and safety units in the
controlled system are not closed
(e.g. gas pressure or air pressure
switches, temperature or pressure
switches, temperature or pressure
regulators).
Operating stop because the
„OPEN“ signal from the „Air
Damper OPEN“ limit switch is
missing. Check and adjust the limit
switch concerned.
Shut-off on trouble because
there is not air pressure
signal at
the beginning of the air pressure
check.
Any air pressure failure
after this time will also lead to a
shut-off on trouble.
I
Shut-off on trouble because of a
fault in the flame monitoring circuit.
Operating stop because the
position signal of the „Partial Load“
limit switch (air damper in „Partial
Load“ position) is not available on
terminal (8). Check and adjust the
limit switch concerned.
1 Shut-off on trouble because a
flame signal is not available on the
expiry of the (1st) safety time.
Any failure of the flame signal on the
expiry of the safety time will also lead
to a shut-off on trouble.
2 Shut-off on trouble because the
flame signal has not occurred on
the expiry of the (2nd) safety time
(flame signal of main flame with
burners having an ignition gas
valve).
Shut-off on trouble because the
flame signal failed during burner
operation or a lack of air has
occurred.
Shut-off on trouble during or after
the control program flow due to
external light (e.g. by flame not
extinguished, leaking fuel valves)
or a faulty flame signal (e.g. fault in
flame monitoring circuit, or similar);
see flame monitor.
If the shut-off on trouble occurs at
any other time between start and pre-
ignition that is not identified by a
symbol as above, this will normally
be due to an early flame signal which
is considered to be a faulty flame
signal.
The automatic furnace controller may
be unlocked
immediately after a shut-
off on trouble using the unlock button
with integrated fault signal lamp or an
external switch. After it has been
unlocked (and after a defect with
resultant operating stop has been
eliminated and after a voltage failure),
the program unit will in any case return
to its starting position with voltage being
only supplied to terminals 7, 9, 10 and
11 as preset by the control program. It is
only at this stage that the program of the
automatic furnace controller will restart
the burner.
LFL 1.../LG K ...
en