IDEAL istor HE260, Installation And Servicing, Page: 55 / 80

55 istor system store -
Installation and Servicing
SERVICING
1. Refer to Frame 53 & 54.
2. Remove the 2 securing screws and allow the user control to
lower.
3. Push out the mains switch from the rear, as shown.
4. Fit the new switch, ensuring that the electrical leads are
replaced on the correct terminals (refer to Frame 42) and the
key on the switch is correctly aligned with the keyway in the
plastic moulding.
5. Re-assemble in reverse order.
6. Check operation of the boiler. Refer to Frame 49.
77 MAINS SWITCH REPLACEMENT
76 CONTROL BOX REPLACEMENT
1. Refer to Frame 53 & 54 .
2. Slacken the backnut on the DHW
expansion vessel and remove to one
side as shown.
3. Remove the fixing screw locating the
control box bracket.
4. Unplug all the electrical wiring from the
control box and remove.
5. Transfer the fixing bracket to the new
control box.
6. Re-assemble in reverse order and
reconnect all the electrical wiring.
7. Check operation of the boiler. Refer to
Frame 49.
78 SPARK GENERATOR REPLACEMENT
1. Refer to Frame 53 & 54.
2. Disconnect the leads from the spark generator.
3. Remove the 2 M4 screws securing the spark generator to
the boiler chassis.
4. Fit the new spark generator and re-assemble in reverse
order.
5. Check operation of the boiler. Refer to Frame 49.
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2
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nm8436
itime programmer
unit
SER
VICING