FRITSCH PULVERISETTE 1, Model I premium line - Manual (Page 35)

1. First, if not already done, lift the fixed crushing jaw (13) as
described in Ä Chapter 5.2.1 ‘Replacing the crushing plate (17) of
the fixed crushing jaw (13)’ on page 26 out of the Jaw Crusher.
2. The 5 fastening screws for the right-hand support wall can be
accessed directly on the right-hand side wall.
3. Undo the screws with the hex wrenches (c and i).
4. Then, lift the support wall up out of the Jaw Crusher.
5. The support wall is installed in the reverse order.
5.3 Comminution of material to be crushed
5.3.1 Setting the gap width
The opening width of the gap between the crushing plates determines
the average particle size of the crushed material. You can use the crank
(4) to adjust the gap in stages between approx. 0.3 mm and 15 mm.
To change the gap, pull out the knurled knob on the crank (4) and move
the crank (4) to the desired position. Allow the knob to engage again cor-
rectly - this locks the fixed crushing plate in place.
You should pre-crush material that is difficult to crush (e.g. metallic
alloys) in a first cycle with a wider gap.
In the second cycle, set the gap width for the desired fineness.
If you do not have any experience in the crushing capability of your
material, you should carefully crush a sample in the first cycle.
Replacing the right-hand support wall
Working with the laboratory jaw crusher
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