C-12 CRUSHER
SETTING MATERIAL OUTPUT SIZE Cont.
Alignment arrow points vertically up at
minimum jaw opening.
Use suitable measuring equipment - ideally callipers - to
measure distance between opposing points on jaw plates at
minimum jaw opening, known as closed size setting - (CSS).
Measure jaw plates at opposing points as shown below:-
The crusher must not be operated at Closed Size
Settings (CSS) of less than 75mm (3") without prior
approval in writing from Extec
Determining when the jaw is fully closed can be done by examining the position of the alignment arrow on the
jawstock shaft end plate. When the indicator arrow is pointing vertically up, the jawstock is in its fully closed
position. This can be seen by looking through the slotted area on the flywheel guards. Use crusher operating
buttons on engine idle speed.
Look through slotted area on guard at alignment arrow on
shaft end plate.
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