Repair manual

40
5 / Repair Instructions
Checking the ignition spark generator with the test unit
for burner head
Danger!
• A spark gap with a voltage of approx. 20,000 V is formed
between the electrodes.
- Only check ignition spark generator with the test unit for
burner head.
- Do not check ignition spark generator without ignition
electrodes.
High voltage
It is imperative to exercise caution
when checking the ignition spark
generator!
Figure 7
~ Ignition electrodes
Ä Securing clip (retaining spring)
Å Baffle plate
Figure 8
~ Ignition spark generator
Ä =Connection of the “Ignition spark generator” cable section
to the control unit, slot “E”
Figure 9
~ Ignition spark generator
Ä Fixtures for the ignition spark generator
Functional test
• Remove all connectors from the control unit.
• Connect test unit for burner head.
• Press “ZFG” switch / button ---> a spark gap should form
between the electrodes
- If not, replace the electric motor.
Removing the ignition spark generator (see Figures 7-9)
• Take off the hood.
• Remove burner.
• Remove ignition electrodes.
• Remove securing clip (retaining spring) from the nozzle
holder and take off the baffle plate.
• If necessary, check the ignition spark generator with the
test unit for burner head (see below).
• Pull out “ignition spark generator” cable section at the
control unit, slot “E”.
• Undo the two fastening screws from the ignition spark
generator.
• Remove ignition spark generator.
Please note!
• When installing, insert the ignition spark generator into the
burner casing fixtures.
• Following installation, check the position of the ignition
electrodes and adjust as necessary.
• Run the cable sections as shown in Figs. 8 and 9.
~
~
Ä
Ä
~
Ä
Å