Sime FORMAT SYSTEM 25 HE Installation And Servicing Instructions page 20

actuator.
Isolate the boiler.
Drain it using the drain provided.
Remove the microswitch by carefully pulling
it forward off its mounting pins.
Remove the screw securing the mounting
plate, then pull off the plate.
Pull out the actuator pin.
Lubricate the centre "O" ring.
Refit the actuator ensuring that the flat side
of the round section is to the bottom.
Re-assemble remaining parts (see 4. 1 2.6
before refilling the boiler).
4. 1 2.7 Aquaguard Filter
It is recommended that the aquaguard filter
is checked at each service.
See section 4. 1 0.
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