I believe it's because the 'push' and 'pull' forces from the
solenoid to the actuator rod are applied axially through the
O-rings, so if the ring is too squishy or thin (or hardly there at
all!) then you will not get the full range of movement on the rod
and thus not the correct movement and contact pressure on the switch
blades.
On 15/09/2024 09:40, Jinxie via
groups.io wrote:
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Incidentally, if anyone can explain why partially perished
o-rings which are still in-situ can cause problems to
the functioning of these attenuators I'd like to be disabused of
my ignorance on the matter!
