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5790 733 - 07
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Checking the Ignition Electrodes and Ionization Electrode
Electrodes
1. The electrode block can be tested or dismounted once
the burner plate has been dismounted.
2. Check ignition electrodes and ionization electrode for
damages and that they are situated at the correct
distance from the burner tube. Replace electrodes if
necessary.
3. Install the electrode block in reverse order.
Fit new gaskets. Torque: 4.4 lb.ft (6 Nm).
Cleaning the Burners
IMPORTANT
Close the central gas shut-off valve for all dismantlement
work on the burners.
For dismantling the burners see from page 96.
Legend
A
Combination gas valve
B
Gas connector pipe
C
Fitting at gas connector pipe
D
Venturi-mixing tube
E
Fan
F
Flame tube
1. Disconnect Venturi mixing tube
D
from fan
E
.
2. Detach Venturi mixing tube
D
with combination gas
valve
A
and gas connector pipe
B
and if applicable,
detach connector pipes.
3. Detach connector pipes
a-Ö
and
a-Ö
A from fan
E
and dismantle fan.
4. Clean fan housing and fan impeller with compressed air.
5. If necessary, vacuum clean burner tube
F
from
inside and out.
6. Reassemble in reverse order.
IMPORTANT
Ensure correct positioning of gasket between fan housing
and burner plate. Replace gasket if damaged.
WARNING
Risk of explosion due to gas leakage. Check for gas
leakage at screws and the gasket between the fan
housing and the burner plate.
Service
