
1. Drain the primary circuit.
2. Undo the screw securing the microswitch to the differential valve. Allow the microswitch to
rest to one side.
3. Undo the pressure gauge capillary nut and heating flow pipe nut from the valve.
4. Prise off the bypass connecting clips and disconnect the heating flow tap. Undo the screws
securing the valve to the boiler bottom panel. Remove the valve.
5. Remove the screws securing the cover from the valve body. Examine the condition of the
diaphragm, spring and pushrod, replacing as necessary.
6. If required the complete valve assembly can be replaced.
7. Examine the sealing washers and 'O' ring on the pipes and capillary, replacing as
necessary.
Содержание 35/80 IE
Страница 15: ...F 190mm G 143mm ...
Страница 20: ...Fig 5 ...
Страница 51: ......
Страница 55: ......
Страница 57: ......
Страница 59: ......
Страница 67: ...br brown bk black b blue r red g green g y green yellow w white Page 39 14 0 Fault Finding ...
Страница 69: ...Page 40 Fault Finding Solutions Sections A to E ...
Страница 70: ...Page 41 ...
Страница 71: ......
Страница 73: ......
Страница 74: ......