15 replacement of parts – Glow-worm Ultracom cx User Manual

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15 Replacement of Parts

15.10 Viewing Window

For access, refer to section 15.1.
Refer to diagram 15.5.
Remove circlip.
Remove steel washer.
Remove glass.
Remove fibre washer.

15.11 Expansion Vessel

For access, refer to section 15.1.
Drain the boiler heating circuit as described in the appropriate

section of 15.1.
Undo the coupling at the base of the vessel, see diagram

15.6.
While holding the vessel remove the securing bolt on the top

panel of the boiler. Remove upper support bracket.
Fit a new gasket between the expansion vessel and coupling.
Refill, vent and pressurise the boiler.

Diagram 15.5

13278

FIBRE WASHER

GLASS

STEEL WASHER

CIRCLIP

Diagram 15.6

13279