39
xtra
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Installation & Servicing
SERVICING
54 IGNITION/DETECTION ELECTRODE TESTING/REPLACEMENT
1.
Refer to Frame 42.
2.
Remove the jacket front and inner front panels. Refer to
Frame 45.
3.
It is possible to measure the ionisation current with a
voltmeter set at 0-10VDC. (0-10VDC = 0-10 micro amps
ionisation current).
4.
With the boiler running, connect a meter between the
terminal marked and earth.
5.
A reading below 3V indicates a fault.
6.
To replace the ignition/detection electrode remove the
controls fascia, pull off the HT and earth leads from the
spark/detection electrode.
7.
Remove the 2 nuts and washers.
8.
Check the electrode gap is 4.0mm.
9.
Replace the electrode using the new gasket provided.
10.
Re-assemble in reverse order.
11.
Refer to Frame 42 for final safety checks.
55 PRESSURE GAUGE REPLACEMENT
1.
Refer to Frame 42, then:
2.
Remove the jacket front, control fascia,
top, and right side panels. (Refer to
Frame 45).
3.
Unscrew the nut retaining the capillary
from the self sealing fitting. Refer to 'A'
in Frame 56.
4.
Compress the retaining lugs and
push forwards to remove the gauge
from the bracket.
5.
Replace the pressure gauge.
6.
Reassemble in reverse order.
7.
Refer to frame 42 for final safety
checks.
7
6
SER
VICING
