Buderus 500 - 28/C Servicing Manual page 55

box 154
Connect the plug of the ionisation electrode.
Refit the DBA control panel, by following the above
procedure in reverse order, and place the boiler into
operation, see box 51, 54 or 55.
box 155 Check and replace the ionisation electrode
Take the boiler out of operation, see box 43, 44 or 47.
Remove the plug of the ionisation electrode, see box 144.
box 156
1
2
Loosen the fixing nut on the ionisation electrode (item 1).
Remove the mounting plate (item 2).
Detach the ionisation electrode (item 3).
box 157
Set multimeter to "measure resistance".
Take a reading at the ionisation electrode to check
whether there is a possible break in the electrode cable.
The electrical resistance of the ionisation electrode cable
must be approximately 0
We reserve the right to make technical modifications
Servicing manual Gas condensing boiler Buderus 500-24/S, 500-24/C and 500-28/C • Issued 02/2006
3
Ω
.
box 158
1
3
Check the ionisation electrode for signs of wear (item 2),
damage (item 3) or soiling (item 4).
box 159
Replace the ionisation electrode if required.
Fit the ionisation electrode.
Connect the plug of the ionisation electrode.
Put the boiler into operation, see box 51, 54 or 55.
box 160 Check the ionisation circuit – earth (ground)
lead
1
Check to ensure that the earth (ground) lead of the
ionisation circuit (item 1) has been correctly fitted.
Buderus Ltd. • http://www.buderus-domestic.co.uk
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