Extec C-12 CRUSHER - Operating the Machine (Crushing); System Start-up Sequence for Crushing; Loading Material Safely and Effectively

C-12 CRUSHER
OPERATING THE MACHINE (CRUSHING)
Prior to loading material into machine, ensure that machine is not vibrating or rocking excessively.
Stabilise with jacking legs if required, or relocate machine to more suitable ground.
2:- Start systems as per above sequence
1:- Turn engine speed switch to position No.2
When the machine is set up as described in the previous pages, it is now ready to be operated. To operate
machine, turn engine speed to No.2 position and then start systems in the following sequence:-
i) SIDE CONVEYOR
ii) MAGNET DO NOT START THESE SYSTEMS IF THEY
iii) MAIN CONVEYOR ARE FULL OF MATERIAL.. CLEAR ANY MATERIAL
iv) CRUSHER AWAY BEFORE STARTING.
v) FEEDER
LOADING MATERIAL INTO MACHINE:
i) Feeder MUST be running PRIOR to feed material being placed upon it.. DO NOT start feeder if it
is full of material.
ii) Material which is larger than 80% of feeder discharge chute should not be presented to the feeder.
STOP MACHINE and remove any large pieces of material with the appropriate equipment. DO
NOT use excavator to force any material into feeder as any damage occurred from this action will
invalidate any EXTEC warrantees.
iii) Material should be fed carefully, (not dropped onto feeder) from about 300mm above feeder. Ensure
that feeder is evenly loaded over its entire length - excluding grizzly - this is to help with screening fines
material and to maximise production.
iv) It is recommended that an excavator is used to load material into hopper. DO NOT OVER FILL
HOPPER.
v) For maximum output and minimum wear, it is recommended that the crusher chamber is fed
consistently with the supply of material being steady and constant. STOP/START OPERATION OF
THE FEEDER SHOULD BE AVOIDED.
vi) Pressure Switches are fitted to the crusher box side plate and should the crusher chamber become
overfilled for "X" minutes ( "X" being adjustable to suit material ) the feeder will STOP until the
material is reduced to an acceptable level. (See photographs on next page for adjusting feeder control
speed & feeder cut out switch).
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