Metso NORDBERG C Series User manual

NORDBERG C SERIES JAW CRUSHERS
INSTRUCTION MANUAL
140588-EN
REV. N

EN 140588-0_N NORDBERG C SERIES JAW CRUSHERS 0-1
NORDBERG C SERIES JAW CRUSHERS CHAPTER 0
This manual is valid for the Nordberg C Series Jaw Crushers manufactured by Metso. These crushers are
high capacity jaw crushers, intented to be used in primary crushing applications.
Because of the continuous development of the product, the manufacturer reserves a right to alter the
technical specifications written in this manual, without any advance information. In case of conflicts
between different language versions, the English version of this manual is the original and prevails.
Copyright © 2010 Metso. Printed in Tampere, Finland.
Manufacturer:
Metso Minerals, Inc., Tampere Works
Lokomonkatu 3, P.O. Box 306
33101 Tampere
Finland
Phone: [phone]
Fax: [phone]
email: [e-mail]
www.metso.com

0-2 NORDBERG C SERIES JAW CRUSHERS 140588-0_N EN
CHAPTER 0 - NORDBERG C SERIES JAW CRUSHERS
This Page Left Intentionally Blank.

Nordberg C Series Jaw Crushers
Table of Contents
NORDBERG C SERIES JAW CRUSHERS
PREFACE
1.1 FOREWORD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
1.2 SAFETY. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-1
SAFETY
2.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-1
2.1.1 General safety instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-2
2.1.2 Operation safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-3
2.1.3 Maintenance safety instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-4
2.2 WARNING SIGNS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-6
2.2.1 Warning sign codes and texts (ANSI). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-8
2.2.2 Warning sign codes and texts (ISO). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .2-10
GENERAL CRUSHER INFORMATION
3.1 CRUSHER TERMINOLOGY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-1
3.2 CRUSHER COMPONENTS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-3
3.3 SPARE PARTS BOOK. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
3.4 ORDERING PARTS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-5
3.5 ESTIMATING CRUSHER CAPACITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3-5
3.6 ESTIMATING CRUSHER PRODUCT GRADATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-7
3.7 CRUSHER SETTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-8
3.8 CRUSHER SETTING LIMITS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-10
3.9 OPTIONS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
3.9.1 Intermediate Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
3.9.2 Protection Plates . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-12
3.9.3 Conveyor Belt Protector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-13
3.9.4 Hydraulic Setting Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14
3.9.5 Automatic Lubrication Unit . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .3-14

Nordberg C Series Jaw Crushers
Table of Contents
OPERATING INSTRUCTIONS
4.1 PREPARATIONS BEFORE STARTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4.2 STARTING THE CRUSHER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4.3 STOPPING THE CRUSHER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-1
4.4 OPERATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.4.1 Oversized Feed . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.4.2 Tramp Iron/Uncrushables. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-2
4.4.3 Packing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-3
4.5 RE-STARTING A CRUSHER STALLED UNDER LOAD . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-4
4.6 CRUSHER SETTING ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
4.6.1 Mechanical wedge setting adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-6
4.6.2 Hydraulic wedge setting adjustment (optional). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-9
4.6.3 Active setting control adjustment (optional) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-10
4.7 TOGGLE PLATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-11
4.8 SPACER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-13
4.9 TROUBLESHOOTING. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .4-14
MAINTENANCE
5.1 SPACER . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
5.1.1 Spacer Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-3
5.1.2 Spacer Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-6
5.2 TOGGLE PLATE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-7
5.2.1 Replacing the Toggle Plate And Toggle Seats (with wedge setting adjustment) . . . . . .5-7
5.2.2 Replacing the Toggle Plate And Toggle Seats with Active Setting Control . . . . . . . . . .5-9
5.3 LUBRICATION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
5.3.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
5.3.2 Grease Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-11
5.3.3 Eccentric Shaft Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-12
5.3.4 Eccentric Shaft Bearing Temperatures. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-16
5.3.5 Jack-shaft Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-17
5.3.6 Jack-shaft Bearing Temperatures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-18
5.3.7 Thrust Bearing And Cap Nut Bearings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-18
5.3.8 Tension Cylinder Slide Bearings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-18
5.3.9 Electric Drive Motor . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-18
5.3.10Toggle Seats And Toggle Plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-19
5.3.11Setting Adjustment Wedges. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-20

Nordberg C Series Jaw Crushers
Table of Contents
5.4 INSTRUCTIONS FOR LIFTING A JAW CRUSHER WHEN REPLACING
CRUSHER SUPPORT BRACKET DAMPERS . . . . . . . . . . . . . . . . . . . . . . . . .5-20
5.5 HYDRAULIC POWER UNIT (OPTIONAL). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-22
5.5.1 Checking oil level and temperature . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-22
5.5.2 Changing oil and filter (Figure 5.11) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-22
5.5.3 Oil recommendation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-24
5.5.4 Bleeding the hydraulic system . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-25
5.6 PERIODICAL MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-28
5.6.1 Daily maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-28
5.6.2 Weekly Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-29
5.6.3 Monthly Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-30
5.6.4 Twice a Year. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-30
5.6.5 Regularly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-30
5.7 MAINTENANCE INTERVALS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-31
5.8 BOLT TORQUE VALUES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .5-33
REPLACEMENT OF WEAR PARTS
6.1 GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-2
6.2 JAW DIE SELECTION. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
6.3 JAW DIE WORK HARDENING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
6.4 CHEEK PLATE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-3
6.4.1 Cheek Plate Removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-4
6.4.2 Cheek Plate Assembly . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-6
6.5 CHANGING OR ROTATING THE JAW DIES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-7
6.5.1 One piece jaw dies. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-8
6.5.2 Two-piece jaw die removal. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-17
6.5.3 Welding lifting lugs to the jaw die . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-28
6.6 PITMAN EYE PROTECTION PLATE REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . .6-31
6.7 FEED HOPPER LINER REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-31
6.8 TOGGLE PLATE SEAT REPLACEMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .6-31

Nordberg C Series Jaw Crushers
Table of Contents
APPENDIX A
SAFETY, OPERATING AND MAINTENANCE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . .A-1
1. Purpose of the jaw die lifting tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
2. Storage of the jaw die lifting tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
3. Safe use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-1
4. Commissioning and operating conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
5. Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
6. The jaw die lifting tool verification before first use and in service. . . . . . . . . . . . . . . . . .A-2
7. Handling the load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-2
8. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-3
9. Operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .A-5
APPENDIX B
SAFETY, OPERATING AND MAINTENANCE INSTRUCTIONS. . . . . . . . . . . . . . . . . . . . .B-1
1. Purpose of the cheek plate lifting tool. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
2. Storage of the cheek plate lifting tool . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
3. Safe use . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-1
4. Commissioning and operating conditions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
5. Technical data . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-2
6. The cheek plate lifting tool verification before first use and in service . . . . . . . . . . . . . .B-2
7. Handling the load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3
8. Maintenance. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-3
9. Operating instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .B-7

EN 140588-1_N NORDBERG C SERIES INSTRUCTION MANUAL 1-1
PREFACE CHAPTER 1
1.1 FOREWORD
This instruction manual provides guidance for first
time operators of the crusher as well as technical
procedures as a reference for the experienced
crusher operator. Read, study, and keep it for future
reference.
The instructions given are for the operation and
basic maintenance procedures only, as this
instruction book is not a repair manual. Should
maintenance procedures not covered in this manual
be required, contact Metso.
Illustrations and instructions guide the operator
through correct procedures for checking, operating
and maintaining the crusher and its accessories.
Operating techniques outlined in this manual are
basic. Operating skills and additional techniques
will develop through experience as the operator
gains knowledge of the crusher and its capabilities.
Continuing improvement and advancement of
product design may result in changes to your new
machine that may not be included in this
publication. As required, each publication is
reviewed and revised to update and include
appropriate changes in the later editions.
The descriptions and specifications in this manual
were in effect at the time this manual was approved
for printing. Metso reserves the right to discontinue
models at any time and to change specifications and
designs, without notice and without incurring
obligation.
Whenever a question arises concerning your
crusher, or this publication, please consult your
Metso representative for the latest available
information.
1.2 SAFETY
BASIC RULES REGARDING SAFETY IN AND
AROUND A CRUSHING PLANT ARE
OUTLINED IN THE SECTION ENTITLED
"SAFETY."
OPERATOR SAFETY AND THE SAFETY OF
OTHERS DEPEND UPON REASONABLE
CARE AND JUDGEMENT IN THE OPERATION
OF THIS CRUSHER. A CAREFUL OPERATOR
IS GOOD INSURANCE AGAINST AN
ACCIDENT.
MOST ACCIDENTS, NO MATTER WHERE
THEY OCCUR, ARE CAUSED BY FAILURE TO
OBSERVE AND FOLLOW SIMPLE
FUNDAMENTAL RULES OR PRECAUTIONS.
FOR THIS REASON RECOGNIZING HAZARDS
AND TAKING STEPS TO AVOID THEM CAN
PREVENT MOST ACCIDENTS.
REGARDLESS OF THE CARE USED IN THE
DESIGN AND CONSTRUCTION OF THIS
TYPE OF EQUIPMENT, THERE ARE
CONDITIONS THAT CANNOT BE
COMPLETELY SAFEGUARDED AGAINST
WITHOUT INTERFERING WITH
REASONABLE ACCESSIBILITY AND
EFFICIENT OPERATION. WARNINGS ARE
INCLUDED IN THIS INSTRUCTION MANUAL
TO HIGHLIGHT THESE CONDITIONS.

1-2 NORDBERG C-SERIES INSTRUCTION MANUAL 140588-1_N EN
CHAPTER 1 - PREFACE
This Page Left Intentionally Blank.

EN 140588-2_N NORDBERG C SERIES INSTRUCTION MANUAL 2-1
SAFETY CHAPTER 2
2.1 GENERAL
The instructions of the safety guide, these safety
instructions and other manuals and safety labels for
the equipment must be read, understood and used
by each person who works with this equipment.
The following symbol is used in this manual and on
the machine to call attention to instructions, which
will help prevent machine related injuries.
When you see this symbol on your machine or in
this manual, be alert to the potential for personal
injury.
Figure 2.1 Alert Symbol
This manual uses the alert symbol, with words such
as DANGER, WARNING or CAUTION, to alert
you and other Crushing Plant personnel of actions
or conditions that pose a potential safety hazard,
with an attending risk of personal injury (including
death) or property damage. The machine also
displays safety signs, labels and tags at appropriate
points to show safety risks that may exist.
Figure 2.2 Danger, warning, caution signs and
their meaning
WARNING!
In addition to these unit-specific safety
instructions, the operators of this
equipment must also read the safety
guide with instructions for general
operational safety.
Sign Description
DANGER Immediate hazards or unsafe practices
that will result in severe personal injury
or death.
WARNING Hazards or unsafe practices that could
result in severe personal injury or death
CAUTION Hazards or unsafe practices that could
result in minor personal injury or
equipment damage
DANGER
CAUTION
WARNING

2-2 NORDBERG C SERIES INSTRUCTION MANUAL 140588-2_N EN
CHAPTER 2 - SAFETY
Personal protective equipment and clothing such as
foot protection, helmet, hearing protection, dust
protective devices, safety glasses or other personal
protective clothing and equipment should be worn
at all times.
Figure 2.3 Personal safety equipment
2.1.1 General safety instructions
1. Ignoring the safety instructions or the
warning signs increases the risk of the
severe injury or death.
2. Nordberg C series jaw crushers has been
designed for safe operation when used by
professional staff in the operating situations
included in this instruction manual. All
other service and repair procedures must be
performed by specially trained personnel or
authorized Metso service staff.
3. The crushing plant and auxiliary equipment
such as chutes, transfer stations, screens,
DANGER!
When working outside service
platforms, safety harnesses must be
worn!
WARNING!
Before performing any maintenance or
repair work, make sure that the crusher
is stopped and locked out.
LOCKOUT PROCEDURE of the
Lokotrack installed crushers
1. Switch off engine
2. Remove the ignition key and keep it
on person during lockout
3. Place appropriate maintenance
warning signs (TAG OUT)
LOCKOUT PROCEDURE of the
electrical motor driven crushers
1. Switch off motor
2. Lock the main switch of the motor
with a padlock or make sure in some
other way that the engine cannot be
started
3. Lock the main switch of the hydraulic
adjustment power unit (if delivered)
with padlock
4. Keep the keys on person during
lockout
5. Place appropriate maintenance
warning signs (TAG OUT).

EN 140588-2_N NORDBERG C SERIES INSTRUCTION MANUAL 2-3
CHAPTER 2 - SAFETY
etc. can create dust and, if not contained, the
dust can escape into the air. Metso highly
recommends that dust protective devices
such as an appropriate respirator be worn by
anyone exposed to airborne dust to prevent
its inhalation. It is the responsibility of the
Owner and Operator to determine the
necessity and adequacy of protective
devices and warnings, to provide them, and
to ensure that they are used and followed!
4. The noise level is dangerously high near the
crusher. All personnel working near the
crusher must wear hearing protection. The
noise level is typically about 102-110 dB
next to the crusher during crushing.
5. Keep the warning signs clean. Replace
illegible and damaged signs before starting
the crusher. Make sure that the warning
signs are not hidden from sight when
installing the crusher. If a part with a
warning sign is replaced, make sure that the
new part also has the required warning
signs.
2.1.2 Operation safety instructions
1. Never operate the crusher without proper
covers and safety devices. If the covers or
safety devices have not been purchased from
Metso, a customer has to ensure that the
covers and safety devices are according to
law and regulations.
2. Before starting the crusher make sure that no
one is near the crusher.
3. It is prohibited to stay in the danger area
during the crushing process. The crushing
material may be thrown into a few meters
distance from the crusher. Always use
helmet and safety glasses.
4. Do not look into the jaw cavity during
crushing. Material may be thrown from the
crusher during crushing and cause injuries.
Always use a helmet and safety glasses.
5. Because the crusher is installed on rubber
dampers, it moves during crushing. This
movement causes a crushing danger. Never
put your hands or feet between the moving
parts and the structure of the crusher during
crushing. The movement may be as much as
± 10mm.
6. Clearing a jammed cavity is extremely
dangerous. Do not attempt to clear the cavity
until the crusher has stopped completely.

2-4 NORDBERG C SERIES INSTRUCTION MANUAL 140588-2_N EN
CHAPTER 2 - SAFETY
2.1.3 Maintenance safety instructions
1. The crusher does not stop immediately after
the motor has been turned off. Make sure
that the crusher has stopped completely
before opening any covers, performing any
maintenance, or adjusting the crusher.
2. Before performing any maintenance or
repair work, make sure that the crusher is
stopped and locked out.
3. The surfaces of the crusher may become hot
during crushing. Hot surfaces can cause
severe burn injuries. Make sure that the
surfaces have cooled before performing any
maintenance work.
4. Before changing any wear parts of the
crusher, read chapter 6: Replacement of
wear parts and appendixes A and B
carefully.
5. Before lifting any wear parts, check the
weight of the component and ensure that
lifting equipment being used is adequate to
lift the weight. In addition, familiarize
yourself with all the special tools provided
with the crusher specifically for replacing
the wear parts.
6. Read the instructions regarding the lifting
tools and replacing wear parts carefully
before replacing any wear parts. Make sure
that the parts are adequately supported
before lifting. Never go under the suspended
load. The lifting tools delivered with the
crusher are designed to be used only with
original Metso wear parts.
7. The spring of the mechanical setting
adjustment may accumulate significant
amount of energy. Follow the instructions
strictly and be extremely accurate when
adjusting the spring. Never release the
protective plate.
8. The pressure accumulator of the hydraulical
setting adjustment may be charged only by a
professional. If the pressure accumulator is
charged incorrectly, it may explode. Do not
charge the accumulator yourself. Release the
pressure from the hydraulic system
according to instructions before any
maintenance to the system.

EN 140588-2_N NORDBERG C SERIES INSTRUCTION MANUAL 2-5
CHAPTER 2 - SAFETY
NOTE: If the gib key is not pointing down, start
the crusher for a second.
Figure 2.4 At the “rest position” the gib key is pointing down
WARNING!
Ensure that the crusher has stopped to
the “rest position”. In other words there
is no potential energy remaining in the
flywheels. This can be determined from
the position of the gib key. It should
point down. (Figure 2.4)

2-6 NORDBERG C SERIES INSTRUCTION MANUAL 140588-2_N EN
CHAPTER 2 - SAFETY
2.2 WARNING SIGNS
The warning signs attached to the equipment must
always be kept readable and clean. Damaged or
loose signs must be replaced at once before starting
the crusher. Make sure that the warning signs are
not covered during installation. If a part of the
crusher attached a warning sign are replaced,
always make sure that the warning signs needed are
included in a new part.
Figure 2.5 The locations of the warning signs
The number and exact locations of the warning
signs may vary according to options (for example,
guards).
The warning signs 1, 2, 3, and 4 are located on both
sides of the crusher.
The warning signs 3 are delivered only if the
crusher delivery includes the drive guards.
The warning sign 5 is delivered only with crushers
that have a mechanical setting adjustment.
The warning signs 6, 7, and 9 are delivered only
with crushers that have a hydraulical setting
adjustment.
IMPORTANT!
There are two different sets of warning
signs depending on the delivery country.
You can check which set of warning
signs is used on your machine from the
side of the machine or the spare part
manual.
IMPORTANT!
Warning signs 1, 2, 3 and 4 are not
attached on crushers installed in
Lokotracks or Nordwheelers.

EN 140588-2_N NORDBERG C SERIES INSTRUCTION MANUAL 2-7
CHAPTER 2 - SAFETY
Figure 2.6 Warning signs (ANSI)
1
2
3
456
7
8
9

2-8 NORDBERG C SERIES INSTRUCTION MANUAL 140588-2_N EN
CHAPTER 2 - SAFETY
2.2.1 Warning sign codes and texts (ANSI)
1. MM0229994
WARNING
Read and understand instruction manual
before using or maintaining this machine.
Failure to follow operating instructions may
result in death or serious injury.
DANGER
Lung disease hazard.
Dust protection required.
WARNING
Risk of eye injury.
Use of eye protection required.
CAUTION
Risk of head injury.
Use of a helmet required.
CAUTION
Hazardous noise level.
Use of ear protection required.
2. MM0229995
DANGER
Moving parts can crush and cut.
Do not insert tools in the crusher cavity
when the motor is running.
WARNING
Material can fall out.
do not stand in the vicinity of the crusher
when the motor is running.
3. MM0229997
WARNING
Exposed moving parts can cause severe
injury.
Do not open drive guard before machine is
completely stopped.
4. MM0229996
WARNING
Exposed moving parts can cause severe
injury.
Do NOT operate this machine without
proper guards.
5. MM0229998
DANGER
Spring in compression.
Read and understand instruction manual
before adjusting or servicing.
Do NOT remove this protection plate.
6. MM0230002
WARNING
Servicing while pressurized can cause
severe injury.
Lock out source and relieve pressure before
servicing.
7. MM0230006
CAUTION
Hot surface.
Contact with skin may cause burns.
Do not touch.
8. MM0230004
CAUTION
Hot surface.
Contact with skin may cause burns.
Do not touch.
9. MM0230447
WARNING
Pressurized device.
Only authorized personnel should service
this dev ice.
See instruction manual for safety
information.

EN 140588-2_N NORDBERG C SERIES INSTRUCTION MANUAL 2-9
CHAPTER 2 - SAFETY
Figure 2.7 Warning signs (ISO)
1
2
3
5
9
67
8
4

2-10 NORDBERG C SERIES INSTRUCTION MANUAL 140588-2_N EN
CHAPTER 2 - SAFETY
2.2.2 Warning sign codes and texts (ISO)
1. MM0250258
WARNING
Read and understand instruction manual
before using or maintaining this machine.
Failure to follow operating instructions may
result in death or serious injury.
DANGER
Lung disease hazard.
Dust protection required.
WARNING
Risk of eye injury.
Use of eye protection required.
CAUTION
Risk of head injury.
Use of a helmet required.
CAUTION
Hazardous noise level.
Use of ear protection required.
2. MM0250251
DANGER
Moving parts can crush and cut.
Do not insert tools in the crusher cavity
when the motor is running.
WARNING
Material can fall out.
do not stand in the vicinity of the crusher
when the motor is running.
3. MM0250244
WARNING
Exposed moving parts can cause severe
injury.
Do not open drive guard before machine is
completely stopped.
4. MM0250244
WARNING
Exposed moving parts can cause severe
injury.
Do NOT operate this machine without
proper guards.
5. MM0250242
DANGER
Spring in compression.
Read and understand instruction manual
before adjusting or servicing.
Do NOT remove this protection plate.
6. MM0250241
WARNING
Servicing while pressurized can cause
severe injury.
Lock out source and relieve pressure before
servicing.
7. MM0250239
CAUTION
Hot surface.
Contact with skin may cause burns.
Do not touch.
8. MM0251117
CAUTION
Hot surface.
Contact with skin may cause burns.
Do not touch.
9. MM0250104
WARNING
Pressurized device.
Only authorized personnel should service
this device.
See instruction manual for safety
information.