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7 Instructions on commissioning and maintenance
7.0 Display and operational controls
Represented in section 9
7.0.1 Intensity indicator including the “Adjust“ function / section 9.1 + 9.2, items 3 and 6
Intensity indication is effected by means of a roaming light dot in 6 levels. The indica-
tion is delayed in accordance with switch-off time (1s and/or 3s) and fulfils 2 functions.
1. Display of the evaluated intensity / basic setting
The Adjust switch has to be in the OFF position. The flame signal that has already
been analysed for amplitude and frequency is displayed. For a well recognised
flame signal, the display in normal state shows the maximum position (uppermost
green LED). There might be a signal rupture in the green LED row for a short pe-
riod depending the behaviour of the flame to be monitored. If such signal rupture
occur very frequently, this may result, however, in a switch-off during a prolonged
operation.
2. Display of the unevaluated intensity (direct signal at the probe element)
The Adjust switch has to be in the ON position in any case. The function of the
Serv. switch is not active in this case. The direct flame signal is now shown at the
probe element without evaluation of the flame frequency. The Adjust function is
used to align the compact flame detector to the maximum of the flame radiation
using a ball-and-socket joint (refer to section 7.1.3). Normally, the display should
be in the green LED row. If the flame is stable, a reliable operation may be possible
in this function even if the two upper yellow LEDs light up. This display mode only
represents the trend of the orientation at a good accuracy, thus it is no exact
measuring device.
7.0.2 Sensitivity range - indication / section 9.2 items 10 and 11
This display type only exists in the F 200 K2 execution type. The display shows the
sensitivity ranges I or II activated by external selection. The range I (normal sensitivity)
is mainly used for high flame intensities, while range II (higher sensitivity) is used for
weaker flame intensities.
7.0.3 Operating state - indication / sections 9.1 + 9.2, items 1 and 2
The red LED shows the Flame OUT operating state, the green LED showing the
Flame IN state. In the “Flame in“ state, the green LED shows a pulsating intensity at
the rhythm of the self-monitoring cycle (1.5 s and/or 3 s). If the green LED is not pul-
sating, this may be due to a e.g. excessive interference radiation (EMV) or to a defect
of the compact flame detector. (refer to 7.1.2 and 7.2)
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