32
Henrad SE FF
- Installation
SERVICING
53 FAN REMOVAL AND CLEANING
SER
VICING
1. Disconnect the 2 ignition leads and one detection lead from
the electrodes.
2. Undo the 3 fixing screws securing the burner assembly.
3. Withdraw the burner assembly downward and out of the
heat exchanger.
4. Brush off any deposits that may have collected on the
burner, ensuring that the flame ports are unobstructed.
Note.
Brushes with metallic bristles MUST NOT be used.
54 BURNER REMOVAL AND CLEANING
5. Inspect the ignition and detection electrodes. Ensure they are clean and in
good condition - replace if necessary.
6. Check the ignition and electrode gaps are correct.
7. Check that the ignition and detection leads are in good condition and renew
as necessary.
1. Disconnect the electrical leads from the fan.
2. Disconnect the pressure sensing pipe from the fan.
a.
Undo the 2 screws securing the pipe to the fan.
b.
Undo the 2 screws securing the pipe clamping
plate to the manifold block.
c.
Withdraw the clamping plate.
d.
Withdraw the pipe from the boiler.
3. Press the retaining bracket lever upwards and rotate
the fan body to the right to disengage the fan scroll
from the bracket. Continue rotating to disengage the
bayonet fixing on the fan outlet.
4. Withdraw the fan.
5. Check that the fan impeller runs freely. Clean with a
soft brush or renew as necessary. Refer to Frame 70.
6. Check that the low pressure sensing pipe is
undamaged and free from obstruction.
Note.
Always take care when handling the fan, in order to
preserve the balance of the impeller.
Summary of Contents for Henrad SE 30 FF
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