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3320 Osmometer not impacting.
On the model 3320 Advanced Micro Osmometers the impactor is held
in place with a metal bracket. This bracket has a rubber pad
to deaden the sound of the returning impactor pin. It may be that
the flat top has stuck to this pad and can be released with
downward pressure from your fingernail.
The rubber should be treated with French chalk or talc to
prevent further sticking.
The diagram below shows A the cover screw to be removed after
the power cable has been unplugged.
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Downward pressure on the pin within the spring retainer D will
relieve sticking.
The rubber pad is item F.
If further cleaning of the impactor is required the bracket B
can be removed by loosening screws C. The pin with its spring and
retainer (keep them in order) can then be lifted vertically from
the solenoid body E. The pin should be cleaned with 70%
isopropanol.
Note that on some units the washer as shown in the diagram below
may not be fitted.
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