High-energy ignition electrode
Ignition position in
retracted state
Operation
With the High-Energy Ignition System Surefire II, the ignition sparks are turned on or off by applying
or removing the power supply. After starting the ignition and subsequent positioning of the ignition
electrode tip (see image below), the ignition spark must be exposed to an ignitable fuel-air mix.
After at most 3 seconds, the fuel should ignite. We recommend that the presence of this flame
should be monitored with a flame detector. When the total ignition time has expired, the ignition
electrode should be retracted from the hot flame area (to protect the ignition tip) and the ignition
should be turned off. If no flame occurs, we refer to the section Troubleshooting on page 19.
To prevent damage to the high-energy ignition unit through frequent ignition attempts or too long
ignition times (e.g. during commissioning), a bimetal switch has been integrated in the ignition
transformer. If the ignition transformer reaches an operating temperature above 120°C, the ignition
process is automatically interrupted. When the coil cools down to under the response temperature of
the bimetal switch, the contact closes automatically. During normal operation as specified, this
should not occur.
Please note that the ignition unit should only be operated within the maximum ON time limits (and
resulting intervals) as laid out in the technical specifications.
Shorter ignition times extend the life cycle of the ignition tip.
Note for use in an oil burner
The optimal position of the ignition tip is in the border area of the spray cone behind the baffle plate.
The optimal position is established by axial displacement of the high-energy ignition equipment.
When heavy oil is used, the oil must be heated to 90° C to 130° C to ensure reliable atomization.
The finer the oil particles, the more ignitable the fuel-air mixture.
Oil lance with nozzle
Note for use in a gas burner
With gas burners, the position of the ignition tip behind the swirl disk is not critical.
The ignition must take place with light load, to ensure the flow rate of the ignitable fuel-air mix
remains low. Ignition only takes place when the gas-air mixture is thoroughly mixed and atomized.
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