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3000838-ISO

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DANGER

Slide and lockconveyors

Fold sideconveyor

Removeextension platestore securely

Lock screensprings

3000838ANSI

Improperly stowed equipment or loose items may collide with vehicles, people, or objects. Injury or death possible.

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Lower side chute/recircconveyor and secure

Read manual

Clean off machine

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3000850ANSI

DANGER

Improperly stowed equipment or loose items may collide withvehicles, people, or objects. Injury or death possible.

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Read manual Clean off machine Store loose items Lock panel door

Improperly stowed equipment or loose items may collide with vehicles, people, or objects. Injury or death possible.

Fold ladders and lock

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Lower Conveyor

3000862-ANSI

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3000866-ISO

Lower side ch ute/recirc conve yor an d secure

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3000866 ANSI

Fold side conveyor

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32-1

Clearing a Stalled Jaw Crushers

EN

32 EN Clearing a Stalled Jaw Crusher

32-2


nWARNINGRefer to Safety Notices Section for relevant

warning and procedure

FALLING HAZARD

LOCKOUT MACHINE

Stalled Jaw Crusher

Safety1. In the situation where an oversize or tramp piece

of material causes the crusher to stall, and the toggle plate does not fail, it is possible that very high pressure will be sustained on the moving swing jaw, dependent on which position the stall occurred in the crushing cycle.

2. This pressure may result in the object to be ejected in a random direction under high force and therefore will need to be released under controlled conditions to enable safe removal of the material that has created the stall condition.

32-3


EN

nWARNINGCUTTING THROUGH THE TOGGLE PLATE WILL CAUSE THE RELEASE OF STORED ENERGY IN THE MOVING JAW WHICH MAY SWING VIOLENTLY BACK TOWARDS THE PERSON PERFORMING THE CUTTING OPERATION.

BEFORE ANY ATTEMPT TO CARRY OUT THE PROCEDURES TO CLEAR THE STALLED CONDITION OF THE CRUSHER THE MACHINE MUST BE ISOLATED FROM ALL SOURCES OF SUPPLY AND THE SAFETY GRID AT THE MOUTH OF THE CRUSHER MUST BE SECURELY FASTENED IN PLACE.

SUITABLE PERSONAL PROTECTION EQUIPMENT MUST BE WORN.

nCAUTIONThe following procedure or any other procedure developed to remove tramp metal, or any other material that results in the stalling of the crusher should be incorporated into a permit to work procedure and a risk assessment under-taken to reflect all local factors. This procedure should be maintained under the control of the component person appointed by the management.

3. The procedure should cover all factors of safety including notification to the manager, isolation of systems and locking out procedure, methods of removal, safe positions for persons and any other precautions as may be deemed necessary.

32-4

03


Procedure to release a stalled jaw crusher1. Observe all safety warnings.

2. Isolate machine from all energy sources.

3. Ensure the safety grid is over the mouth of the crusher. (Note that this may not be sufficient to

withstand the force of an ejected object under all conditions, and all persons must be kept clear in

case it is pushed backwards.

4. If the crusher is equipped with hydraulic drive, attempt to start the machine in reverse.

5. If the crusher is equipped with a hydraulic

wedge adjust system, attempt to release the pressure on the jaw by opening the jaw using the machine controls.

6. If none of the above operations are applicable, or successful, then the toggle plate must be cut.

7. Before the cutting operation is commenced adequate and appropriate provision MUST be made to support the weight of the stored energy in order to prevent the violent swinging movement of the jaw.

8. The toggle plate should heated across the centre line, between the holes, using a long-handled large gas torch, such that the operator can stand in a protected position, preferably to the side of the plant.

9. Heat the material to a dull red, starting at the mid point, and working outwards either side in turn. Ideally, the toggle plate should be heated until it yields. The yielding of the toggle plate will reduce or eliminate the pressure on the trapped object.

10. If the plate does not yield, then it is recommended that small cuts are made in either side of the toggle plate with an acetylene cutting torch approximately 50mm (2in) from each side and the heating procedure repeated until yielding occurs.

11. After the pressure is released due to the toggle plate yielding, the toggle plate should be cut in two and removed.

For advice, contact your local dealer or technical support.

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50-1

Servicing Electrical System

EN

50 EN Servicing Electrical System

50-2

16


1. The plant electrical equipment is a self contained 24V DC system operated via automotive batteries which are recharged when the engine is running.

2. Depending upon the model of plant and the equipment fitted, various types of control, monitoring, sequencing, electrical safeguards and fault detection devices are built into the system including a multi station emergency stop circuit.

3. Any work on the plant electrical system shall only be undertaken by a qualified electrician, familiar with this type of system.

4. Circuit protection fuses or circuit breakers fitted depend upon the plant model. The replacement of a protection device after failure must not exceed the rating of the original otherwise damage to components may occur and any warranty invalidated. A repeat of the failure must be investigated and the problem rectified by a competent person.

5. Always keep the electrical cabinets and control boxes closed during the crushing operation to prevent the ingress of dust and damp.

6. At regular intervals check the tightness of the electrical components on the plant and look for any damage to the electrical wiring.

7. Battery electrolyte level MUST be checked every 50 Hours and replenished if necessary.

nDANGEREmergency stop equipment and all other safety systems, including the audible warning siren, must be operative at all times whilst the plant is running or being manoeuvred.

The safety devices must be checked as fully operational at each daily start and must not have been tampered with or disabled in any way.

8. Refer to emergency stop section.

General

50-3


EN

Battery ReplacementSafe Handling of Automotive Batteries9. The plant contains 2 automotive type batteries

which are replacable.

10. Battery Posts, terminals and related accessories contain lead and lead compounds.

11. Handle batteries carefully and keep them level as they contain sulphuric acid, an electrolyte which can cause severe burns and produce explosive gases.

12. Avoid contact with the skin, eyes or clothing.

13. Wash hands thoroughly after handling.

50-4

10

15

16


nWARNINGRefer to Safety Notices Section for relevant

warning and procedure

LOCKOUT PLANT

FALLING HAZARD

15. Stop the plant and remove the ignition key.

16. Set the battery disconnect switch to ‘0’ and lockout.

Automotive Battery Replacement14. Batteries should only be replaced by a

competent person.

19. On some plants it is necessary for a suitable working platform to be used.

20. The plant has a negative [-] chassis connection.

21. Disconnect the cable at the negative [-] battery terminal first.

22. Disconnect the positive [+] plant feed cable at the battery terminal.

23. Disconnect the battery linking cable.

17. Two batteries are used for the plant electrical system, located near or within the engine powerpack.

18. Remove fasteners and guard, cover or floor panel to gain access to the batteries.

50-5

03

28

27


EN

24. Release the batteries from the securing clamps and remove batteries.

25. Replacement batteries must be of the same type and capacity as the original ones fitted.

26. Contact your local Powerscreen® dealer or Powerscreen® technical support department for advice if in doubt.

Battery Recycling27. Do not dispose of any old batteries with normal

waste that may to go to landfill.

28. All batteries shall be disposed of correctly to be recycled at an approved treatment facility.

50-6


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;$ 6 ;$ ;5 6 ;5 86(5 0$18$/...LL 8VHU 0DQXDO &RQWHQWV (1 3UHSDULQJ WR 0RYH WKH 3ODQW,QLWLDO...

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