Repair manual

42
Figure 11
~ Heating cartridge - installed in the nozzle holder
Ä Securing pin for heating cartridge
Å =Connection of the “Heating cartridge” cable section to
the control unit, slot “F”
Removing the heating cartridge for the nozzle holder
heater (see Figures 11 and 12)
• Take off the hood.
• Remove burner.
• Remove ignition electrodes from ignition spark generator.
• Remove securing clip (retaining spring) from the nozzle
holder.
• Remove baffle plate.
• Pull out “Heating cartridge” cable section at the control unit,
slot “F”.
• Remove securing pin from the nozzle holder (which holds
the heating cartridge).
• Pull out heating cartridge from the nozzle holder.
• Unscrew temperature switch (if present) from the nozzle
holder.
• If appropriate, check the heating cartridge (see below).
Please note!
• When installing the heating cartridge, insert the securing pin
into the nozzle holder again.
• Tightening torque for temperature switch 2.8 +1 Nm.
Functional testing of the heating cartridge
• Connect ohmmeter to the 2-pin receptacle housing and
behind the temperature switch (if present). If the measured
value is 5-10 Ω, then the heating cartridge is OK, otherwise
replace the heating cartridge.
Heating cartridge without temperature switch
Figure 12
~ Heating cartridge - installed in the nozzle holder
Ä Securing pin for heating cartridge
Å =Connection of the “Heating cartridge” cable section to the
control unit, slot “F”
Ç Temperature switch
Heating cartridge with temperature switch
(only with HYDRONIC 24)
5 / Repair Instructions
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