baltur COMIST 180 Manual Installation, Use, Maintenance page 65

CONTROL BOX FOR LFL 1.... SERIES 02 GAS BURNERS
Control program in the event of stopping, indicating position of stop
As a rule, in the event of any kind of stop, the fuel flow is cut off immediately. At the same time, the programmer remains immobile, as
does the switch position indicator. The symbol visible on the indicator reading disk indicates the type of fault.
No start-up, because of failure in closing of a contact or lock-out stop during or at the end of the command sequence because
of external lights (for example: flames not extinguished, loss at the level of the fuel valve, defects in the flame control circuit,
etc.)
Start-up sequence stops, because the OPEN signal was not sent to terminal 8 by limit switch contact "a". Terminals 6, 7 and
15 remain powered until the defect is eliminated.
P Lock-out stop, because of lack of air pressure signal.
Any lack of pressure from this moment onwards will cause a lock-out stop!
Lock-out stop because of flame detection circuit malfunction.
Start-up sequence stops, because the position signal for low flame was not sent to terminal 8 by auxiliary switch "m". Termi-
nals 6, 7 and 15 remain powered until the fault is eliminated.
1 Lock-out stop, due to lack of flame signal at the end of the first safety time.
2 Lock-out stop, because no flame signal was received at the end of the second safety time (main flame signal with pilot burners
at intermittent operation).
Lock-out stop, due to lack of flame signal during burner operation.
If a lock-out stop occurs at any moment between the start and pre-ignition without a symbol, the cause is generally to be attributed to a
premature or abnormal flame signal caused, for example, by self-ignition of a UV tube.
Stop indications
LFL ..., Series 01 LFL ..., Series 02
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a-b Start-up program
b-b'
"Trips" (without contact confirmation)
b(b')-a Post-ventilation program
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N° 451
Rev. 07/1996
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