1. Grip the outer sides of the front panel (A) pull and lift away from retaining lugs. Note. If required, top panel (B) can be removed, remove 2x internal screws, grip the outer sides pull upwards and lift away.
2. Remove screw (C) to swing control panel (D) outwards to its full extent. 3. Pull clip (E) outwards to release expansion vessel (F), swing expansion vessel outwards.
B (see note) 2x internal screws A
D
E
F
G
C
4. Remove four screws (G) to remove the inner case cover.