Lamtec F200K Manual
Also see for F200K Series: Safety manualQuick reference
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Contents
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307 Instructions on Commissioning and Maintenance7.2.3 Preparations7.2.3.1 Checking the Compact Flame ScannerThe flame detector can be checked for proper functionality without a flame being present.1 Carry out the complete electrical installation of the flame detector and connect it to thesupply voltage.A LAMTEC test emitter of the FFP30 type (IR + UV) can be used as an auxiliary meansfor flame simulation.2 Simulation of flame radiation in front of the flame detector's viewing port. This can beachieved using a lighter or any other type of a modulated-light source (do not use themains frequency) having a sufficiently high intensity. For example the light from a lamp canbe modulated by moving splayed fingers to and fro in front of the bulb. However, start-upsuppression requires a stable signal to do this. If necessary and if the signal is not suffi-cient, the switch (see chapter 9.1 Layout of the Operational Controls) should beset to OFF in order to make the reaction to the simulated flame signal visible.The flame detector will switch on its output contacts if the flame signal is simulated for a suf-ficient period of time. This is indicated by the extinction of the red LED and the pulsating lightof the green LED. The 6-level intensity indicator illuminates.If no flame signal is indicated despite apparent correct functionality then check the output con-tact (refer to chapter 7.3 Troubleshooting).7.2.3.2 AlignmentThe following information applies analogous to the process optics of Fiber optic.IR- flame detectors should be installed / aligned in such a way that possible reflections fromthe combustion chamber are already largely suppressed by constructive measures. A ball-and-socket joint for the alignment of the sensor to the flame is normally not required, since theoptics of the flame detector is characterised by a wide viewing angle.UV- flame detectors should generally be used with a ball-and-socket joint only, since the op-tics of the flame detector has a narrow viewing angle. For this reason an optimum alignmenttowards the flame is of utmost importance.7.2.3.3 OpticsThere are no special requirements for locking discs or similar components when using IR-flame scanners. Small accumulations of dirt due to dust and similar materials are generallynot critical for flame detection.In UV- flame scanners, the requirements for locking discs are more critical. Ensure that ma-terials, such as quartz, that allow UV light to pass through freely are used. These materialsare used in the LAMTEC UV adjustable holding devices (FH30, FV30, FH40 and FV40) Smallaccumulations of dust, water and other contaminants are much more likely to affect the per-formance of flame detection than when using an IR scanner.WARNING!When using an F200K without mains frequency suppression, it must be ensured that it is pro-tected against the detection of mains frequency light. The mounting of the sight opening onthe burner must meet the requirements of a tool mounting. Unintentional loosening of theF200K must be prevented.Advice on this is available from LAMTEC support. |
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