In message , AndyG
writes

JE Wrote:
Im attempting to replace my aging potterton EP2000 controller with a
Horstmann C27 controller.

Like you I am attempting to replace my Potterton EP2000 with a C27,
but
I am unable to get past first base. I can't work out how to remove
the
front cover of the Potterton. There are no screw fixings and as far
as
I can see no simple clip fixings?

The timer came with the house 18 years ago, less instructions.

The screw is underneath

There are two "hinges" at the top of the backplate

You rotate the time clock upwards to release it


--
geoff