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7 Instructions on Commissioning and Maintenance
7 Instructions on Commissioning and Maintenance
7.1 Display and Operational Controls
Represented in chapter 9.1 Layout of the Operational Controls.
NOTICE
The cables are designed for a special temperature range (see chapter 10.1.2 Technical Data).
Do not open the devices in temperatures below -20 °C/-4 °F.
7.1.1 Intensity Indicator Including the 'Adjust' Function
The flame intensity is represented by a six dot indicator. The indication is delayed in accord-
ance with switch-off time (1s and/or 3s) and fulfils 2 functions.
1 Display of the evaluated intensity / basic setting
With the Adjust switch set in the OFF position the flame intensity, after internal analysis of
amplitude and frequency, is displayed. For a well-established flame signal the state will
display the maximum intensity i.e. the uppermost green LED. In normal operation the sig-
nal indication may vary/fluctuate for a short period of time depending on the behaviour of
the flame being monitored. However, if variance/fluctuation occurs too frequently this
might result in a switch-off during prolonged operation.
2 Display of the unevaluated intensity (direct signal at the probe element)
With the Adjust switch set to the ON position the flame intensity is displayed as detected
at the probe element without internal flame frequency analysis processing. This function
allows the compact flame detector to be aligned to detect the maximum flame radiation
value using the ball-and-socket joint adapter (refer to chapter 7.2.4 Settings). Note that
with the Adjust switch set to ON the Serv. switch becomes inactive.
Normally, the display should be in the green LED row. If the flame is stable, a reliable op-
eration may be possible in this function even if the two upper yellow LEDs light up. In this
mode the flame signal indication should only be used to optimise the alignment of the
flame detector and not as an exact indication of flame measurement
7.1.2 Operating State - Indication
This display type only exists in the F200K2 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, whilst range II (higher sensitivity) is used for weaker flame intensi-
ties.
7.1.3 Operating Mode - Display
The red LED shows the ’Flame OUT’ operating state. Whilst indicating 'Flame IN' the green
LED pulses in intensity to indicate the self-monitoring operation of the system. The pulse fre-
quency is the same as the self-monitoring cycle time (1.5 or 3.0 seconds). If the green LED
does not pulse then this could be symptomatic of electromagnetic interference (EMC) or a de-
fect of the compact flame scanner. (refer to chapters from 7.2.6 Fault on Flame Detection to
chapter 7.2.8 Faults During Operation and chapter 7.3 Troubleshooting).
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