16.7 To remove the electronic ignition generator.
1.
Remove the burner unit (See section 16.6)
2.
Remove the battery.
3.
Remove the spark lead and microswitch
leads remembering to make note of their
positions.
4.
Unscrew the two fixing screws that attach the
generator unit to the support bracket. The
igniter generator can now be removed (See
figure 47). Between the igniter and the bracket
are two spacer washers that must be kept.
5.
Replace the generator ensuring that the
spacer washers are replaced.
6.
Refit in the reverse order.
16.8 To remove the thermocouple interrupter
block.
(See figure 40).
1.
Remove the burner unit (See section 16.6).
2.
Detach the thermocouple from the interrupter block by unscrewing the
thermocouple nut.
3.
Detach the two microswitch leads from the interrupter block.
4.
Remove the interrupter block by unscrewing from the gas shut-off tap.
5.
Refit in the reverse order. If the microswitch leads cannot be easily attached to the
interrupter block when it is fully tightened to the gas shut-off tap, slacken it and rotate
to allow the leads to be fitted. Retighten making sure that the leads remain in place in
the interrupter block. Fit and tighten the thermocouple nut making sure that the leads
are secured in the interrupter block to give a good electrical contact.
16.9 To remove the pilot unit.
1.
Remove the burner unit (See section 16.6).
2.
Detach the pilot pipe from the pilot unit.
3.
Detach the thermocouple from the interrupter block by unscrewing the
thermocouple nut.
4.
Detach the electrode lead from the underside of the electrode tab.
6.
Remove the two screws securing the pilot unit (See figure 48).
7.
Refit in the reverse order.
Note:
1. The pilot unit is an atmosphere sensing device. It must be replaced as a whole
assembly. Its individual components are not separately replaceable.
2. When the thermocouple is removed from the interrupter block, the microswitch
lead terminals in the interrupter block will be loose. Make sure that they are
properly secured to give a good electrical contact when retightening the
thermocouple nut.
Page 46
©
Baxi Heating U.K. Limited 2010.
INSTALLER GUIDE
Figure 47. Removal of electronic
ignition generator
Summary of Contents for 954
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