The chamber must be disconnected from the mains supply
(by unplugging it!)
before the glass covers are taken off for
cleaning.
Cleaning the outer cover:
Simply lift up the outer cover to take it off for cleaning.
Cleaning the inner cover:
Carry out the following succession of steps to take off the
inner glass cover for cleaning:
– Lift the outer cover up and off
– Remove the spacer bolts fitted between the inner and
outer glass covers
– Draw the connecting plug for the cover heating down and
out
– Use the screwdriver provided to unscrew the side plate
– Take out the flat plug for the pane heating (on the side
where the specimen is introduced)
– Take off the inner cover
Removal and re-assembly of the heating wires:
– Disconnect the connecting plug between the two heating
segments
– To linearly expand the heating wires, which are under
mechanical tension, use an external source of current to
electrically heat each of the heating wire segments, one
after the other, with 4.5 V/12 A. When the heating wires
have been slightly lengthened in this way, carefully take
out the track pair of a heating segment from the covering
plate of the cover. Remove the leaf springs between the
tracks and the glass plate.
Artificial radiation sources
On the left side of the chamber base there is an opening (20)
which serves for introducing artificial radiation sources. Use
the head of the screw to push the plate to the right. The ball
with pin which is located behind the plate can be turned
around with the aid of the pin until the opening towards the
inner area becomes visible. Now you can insert an artificial
radiation source like, for instance, the thorium source by
PHYWE a few centimeters into the inner area of the
chamber.
Notes
A: General
To avoid deposits on the inside surface of the inner glass
cover, never disconnect the chamber from the mains supply
nor switch it off at the main switch. This ensures that the
heating circuit for the glass cover heating remains active
even when the chamber itself - controlled by the timer - is
inactive at night or over weekends. In this way, condensation
of alcohol on the inside surface of the inner glass cover, and
the contamination resulting from this, are avoided to a great
extent.
Please read in detail the attached descriptin of the
thermostat.
B: Cleaning
Periodic cleaning of the glass covers with a commercially
available glass cleaning agent is recommended.
Important!
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