MTS Systems Landmark 370 Series User manual

MTS Landmark™ Tabletop Load Units Product Information
Landmark™ Axial Load Unit, Landmark™ 100 Hz Elastomer, Bionix®
Axial/Torsional
100-206-897 F

©2016 MTSSystems Corporation. All rights reserved.
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Plus, MTS Acumen, MTS Criterion, MTS Echo, MTS EM Extend, MTS Exceed, MTS Insight, MTS
Landmark, MTS TestSuite, RPC, SWIFT, Temposonics, TestWare, TestWorks are registered
trademarks of MTS Systems Corporation within the United States. Acumen, AdapTrac, Advantage,
Aero ST, Aero-90, AeroPro, Criterion, cRPC, Exceed, First Road, Landmark, MAST, MicroProfiler,
MPT, MTS Exceed, MTS Fundamentals, MTS TestSuite, ReNew, SilentFlo, TempoGuard, TestLine,
Tytron, Virtual Test Lab, and VTL are trademarks of MTS Systems Corporation within the United
States. These trademarks may be registered in other countries.
All other trademarks are the property of their respective holders.
Proprietary Software
Software use and license is governed by MTS’ End User License Agreement which defines all rights
retained by MTS and granted to the End User. All Software is proprietary, confidential, and owned by
MTS Systems Corporation and cannot be copied, reproduced, disassembled, decompiled, reverse
engineered, or distributed without express written consent of MTS.
Software Verification and Validation
MTS software is developed using established quality practices in accordance with the requirements
detailed in the ISO 9001 standards. Because MTS-authored software is delivered in binary format, it is
not user accessible. This software will not change over time. Many releases are written to be backwards
compatible, creating another form of verification. The status and validity of MTS’ operating software is
also checked during system verification and routine calibration of MTS hardware. These controlled
calibration processes compare the final test results after statistical analysis against the predicted
response of the calibration standards. With these established methods, MTS assures its customers that
MTS products meet MTS’ exacting quality standards when initially installed and will continue to perform
as intended over time.
Manual Part Number Publication Date
100-206-897 F November 2016
100-206-897 E November 2013
100-206-897 D July 2011
100-206-897 C1 April 2011
100-206-897 C March 2010
100-206-897 B April 2009
100-206-897 A November 2008

MTS Landmark™ Tabletop Load Units - Product Information 3
Technical Support 9
How to Get Technical Support 9
Start with your manuals 9
Technical support methods 9
Outside the U.S. 9
Before You Contact MTS 9
Know your site number and system number 9
Know information from prior technical assistance 10
Identify the problem 10
Know relevant computer information 10
Know relevant software information 10
If You Contact MTS by Phone 11
Identify system type 11
Be prepared to troubleshoot 11
Write down relevant information 11
After you call 12
Problem Submittal Form 12
Preface 13
Before You Begin 13
Safety first! 13
Other MTS manuals 13
Documentation Conventions 13
Hazard conventions 13
Other special text conventions 14
Special terms 14
Illustrations 14
Electronic manual conventions 14
Hypertext links 14
Safety 15
General Safety Practices 16
Safety Practices Before Operating the System 17
Read all manuals 17
Locate lockout/tagout points 17
Know facility safe procedures 17
Locate Emergency Stop buttons 17
Know controls 17
Have first aid available 17
Know potential crush and pinch points 17
Contents

4MTS Landmark™ Tabletop Load Units - Product Information
Be aware of component movement with hydraulics off 18
Know electrical hazards 18
Ensure correct cable connection 18
Keep bystanders safely away 18
Wear proper clothing 18
Remove flammable fluids 18
Know compressed gas hazards 19
Check bolt ratings and torques 19
Practice good housekeeping 20
Protect hoses and cables 20
Provide proper hydraulic fluid filtration 20
Protect accumulators from moving objects 20
Record changes 20
Provide test area guards 20
Do not exceed the Maximum Supply Pressure 20
Do not disable safety devices 21
Use appropriately sized fuses 21
Provide adequate lighting 21
Provide adequate ventilation 21
Provide means to access out-of-reach components 21
Safety Practices While Operating the System 22
Wear appropriate personal protection 22
Provide test area enclosures 22
Specimen temperature changes 22
Handle chemicals safely 22
Know servohydraulic system interlocks 22
Know system limits 23
Do not disturb sensors 23
Ensure secure cables 23
Stay alert 23
Contain small leaks 23
Stay clear of moving equipment/avoid crush points 23
Know the causes of unexpected actuator motions 23
Do not use RF transmitters 24
Load Unit Hazard Labels 24
Hazard Labels North America (part number 100-164-553) 24
Hazard Labels Rest of World (part number 100-164-565) 25
Hazard Label for HSM Needle Valve Adjustment 26
Hazard Label for HSM Needle Valve Adjustment 27
Introduction 29
Overview 30
Contents

MTS Landmark™ Tabletop Load Units - Product Information 5
What you need to know 32
Related products 33
EU Declarations 33
EC Declaration of Conformity (Machinery Directive 2006/42/EC Annex II 1A) 33
Declaration of Incorporation (Machinery Directive 2006/42/EC Annex II 1B) 33
Component Description 35
Functional Description 40
Load frame 40
Crosshead 40
Manifold 40
Pressure control 41
Transducers 41
Series 661 Force Transducers 42
Dimensions 43
Series 662 Force Transducers 44
Dimensions 45
Specifications 45
Installation 47
About Installation 48
Lifting and Moving the Load Unit 48
Overview 48
Lift and Move the Load Unit 49
Connecting Cables 56
Prerequisite 56
Cable connections 56
Low Flow Power Supply 57
Connect Hydraulics 59
Unlock the Crosshead 59
Operation 63
Control Module 64
Specimen Installation 65
Prerequisites 65
Install the Specimen 66
Position the Crosshead Manually 68
Manually Clamp the Crosshead 70
Contents

6MTS Landmark™ Tabletop Load Units - Product Information
Crosshead Clamping Bolt Torque Values 71
Move the Crosshead Hydraulically 71
Adjust the Grip Clamp Rate 72
Adjust the Grip Clamp Force 73
Handset Control 73
Handset Control Functions 73
Standard Test Area Enclosure Operation 75
Hydraulic Power Off 75
Specimen Installation and Setup 75
Run Mode 76
Service 76
Emergency Stop and Actuator Velocity Limiting Switch 77
Interlock logic 78
Test Area Enclosure with Light Curtain 79
Additional Station Manager and Interlock Functionality (Units equipped with elec-
tromagnetic rotary servo motor only) 81
Maintenance 83
Routine Maintenance Overview Checklist 85
Other Maintenance Tasks 90
Daily Inspections 91
Clean the Columns 91
Prevent Rust 92
Recommended Supplies 92
Maintain Airmount Pressures 95
Label Inspection 97
Adjust the Hydraulic Locks 97
Lubricate the Crosshead Locking Bolts 101
Aligning the Force Transducer 102
Required Equipment 102
Align the Force Transducer 103
Series 111 Accumulator: Maintenance Overview 106
Series 111 Accumulator: Check and Change Precharge Pressure 109
Equipment 109
Prerequisites 109
Contents

MTS Landmark™ Tabletop Load Units - Product Information 7
Check the Precharge Pressure 110
Change the Precharge Pressure 111
Decrease Pressure 112
Increase Pressure 112
Actuator 113
Weekly 113
Monthly 113
Yearly 113
Change the HSM Filter 114
Change the HSM Filter 115
252 Servovalve 115
Replacing the Servovalve Filter Element 115
Replace the Servovalve Filter Element 116
Adjusting the Mechanical Null 118
Adjust the Mechanical Null 118
Performing Sensor Calibration 122
Decommissioning 123
Decommission the System 123
Declarations 127
Declaration of Conformity 128
Original - Page 1 of 3 - DoC Load Unit - December 21, 2009 128
Original - Page 2 of 3 - DoC Load Unit - December 21, 2009 129
Original - Page 3 of 3 - DoC Load Unit - December 21, 2009 130
Declaration of Incorporation 131
Original - Page 1 of 3 - DoI Load Unit - December 21, 2009 131
Original - Page 2 of 3 - DoI Load Unit - December 21, 2009 132
Original - Page 3 of 3 - DoI Load Unit - December 21, 2009 133
Contents

Technical Support
MTS Landmark™ Tabletop Load Units - Product Information 9
Technical Support
How to Get Technical Support
Start with your manuals
The manuals supplied by MTS provide most of the information you need to use and maintain your
equipment. If your equipment includes software, look for online help and README files that contain
additional product information.
Technical support methods
MTS provides a full range of support services after your system is installed. If you have any questions
about a system or product, contact Technical Support in one of the following ways.
Type of
Support Details
Web site www.mts.com > Contact Us > In the Subject field, choose To escalate a problem;
Problem Submittal Form
E-mail Worldwide: [e-mail]
Europe: [e-mail]
Telephone Worldwide: 1 800 328 2255 - toll free in U.S.; [phone] - outside U.S.
Europe: [phone], International toll free in Europe
Outside the U.S.
For technical support outside the United States, contact your local sales and service office. For a list of
worldwide sales and service locations and contact information, use the Global MTS link at the MTS
web site:
www.mts.com > About MTSSystems >Global Presence >Choose a Region
Before You Contact MTS
MTS can help you more efficiently if you have the following information available when you contact us
for support.
Know your site number and system number
The site number contains your company number and identifies your equipment type (such as material
testing or simulation). The number is typically written on a label on your equipment before the system
leaves MTS. If you do not know your MTS site number, contact your sales engineer.
Example site number: 571167

Technical Support
10 MTS Landmark™ Tabletop Load Units - Product Information
When you have more than one MTS system, the system job number identifies your system. You can
find your job number in your order paperwork.
Example system number: US1.42460
Know information from prior technical assistance
If you have contacted MTS about this problem before, we can recall your file based on the:
lMTS case number
lName of the person who helped you
Identify the problem
Describe the problem and know the answers to the following questions:
lHow long and how often has the problem occurred?
lCan you reproduce the problem?
lWere any hardware or software changes made to the system before the problem started?
lWhat are the equipment model numbers?
lWhat is the controller model (if applicable)?
lWhat is the system configuration?
Know relevant computer information
For a computer problem, have the following information available:
lManufacturer’s name and model number
lOperating software type and service patch information
lAmount of system memory
lAmount of free space on the hard drive where the application resides
lCurrent status of hard-drive fragmentation
lConnection status to a corporate network
Know relevant software information
For software application problems, have the following information available:
lThe software application’s name, version number, build number, and (if available) software
patch number. This information can typically be found in the About selection in the Help menu.
lThe names of other applications on your computer, such as:
lAnti-virus software
lScreen savers
lKeyboard enhancers
lPrint spoolers
lMessaging applications

Technical Support
MTS Landmark™ Tabletop Load Units - Product Information 11
If You Contact MTS by Phone
A Call Center agent registers your call before connecting you with a technical support specialist. The
agent asks you for your:
lSite number
lEmail address
lName
lCompany name
lCompany address
lPhone number where you can be reached
If your issue has a case number, please provide that number. A new issue will be assigned a unique
case number.
Identify system type
To enable the Call Center agent to connect you with the most qualified technical support specialist
available, identify your system as one of the following types:
lElectrodynamic material test system
lElectromechanical material test system
lHydromechanical material test system
lVehicle test system
lVehicle component test system
lAero test system
Be prepared to troubleshoot
Prepare to perform troubleshooting while on the phone:
lCall from a telephone close to the system so that you can implement suggestions made over
the phone.
lHave the original operating and application software media available.
lIf you are not familiar with all aspects of the equipment operation, have an experienced user
nearby to assist you.
Write down relevant information
In case Technical Support must call you:
lVerify the case number.
lRecord the name of the person who helped you.
lWrite down any specific instructions.

Technical Support
12 MTS Landmark™ Tabletop Load Units - Product Information
After you call
MTS logs and tracks all calls to ensure that you receive assistance for your problem or request. If you
have questions about the status of your problem or have additional information to report, please
contact Technical Support again and provide your original case number.
Problem Submittal Form
Use the Problem Submittal Form to communicate problems with your software, hardware, manuals, or
service that are not resolved to your satisfaction through the technical support process. The form
includes check boxes that allow you to indicate the urgency of your problem and your expectation of an
acceptable response time. We guarantee a timely response—your feedback is important to us.
You can access the Problem Submittal Form at www.mts.com > Contact Us (upper-right corner) > In
the Subject field, choose To escalate a problem; Problem Submittal Form

Preface
MTS Landmark™ Tabletop Load Units - Product Information 13
Preface
Before You Begin
Safety first!
Before you use your MTS product or system, read and understand the safety information provided with
your system. Improper installation, operation, or maintenance can result in hazardous conditions that
can cause severe personal injury or death, or damage to your equipment and specimen. Again, read
and understand the safety information provided with your system before you continue. It is very
important that you remain aware of hazards that apply to your system.
Other MTS manuals
In addition to this manual, you may receive additional manuals in paper or electronic form.
You may also receive an MTS System Documentation CD. It contains an electronic copy of the
manuals that pertain to your test system.
Controller and application software manuals are typically included on the software CD distribution disc
(s).
Documentation Conventions
The following paragraphs describe some of the conventions that are used in your MTS manuals.
Hazard conventions
Hazard notices may be embedded in this manual. These notices contain safety information that is
specific to the activity to be performed. Hazard notices immediately precede the step or procedure that
may lead to an associated hazard. Read all hazard notices carefully and follow all directions and
recommendations. Three different levels of hazard notices may appear in your manuals. Following are
examples of all three levels. (for general safety information, see the safety information provided with
your system.)
Danger: Danger notices indicate the presence of a hazard with a high level of risk which, if
ignored, will result in death, severe personal injury, or substantial property damage.
Warning: Warning notices indicate the presence of a hazard with a medium level of risk
which, if ignored, can result in death, severe personal injury, or substantial property damage.
Caution: Caution notices indicate the presence of a hazard with a low level of risk which, if
ignored, could cause moderate or minor personal injury or equipment damage, or could
endanger test integrity.

Preface
14 MTS Landmark™ Tabletop Load Units - Product Information
Other special text conventions
Important:
Important notices provide information about your system that is essential to its proper function.
While not safety-related, if the important information is ignored, test results may not be reliable,
or your system may not operate properly.
Note:
Notes provide additional information about operating your system or highlight easily
overlooked information.
Recommended:
Recommended notes provide a suggested way to accomplish a task based on what MTS has
found to be most effective.
Tip:
Tips provide helpful information or a hint about how to most efficiently accomplish a task.
Access:
Access provides the route you should follow to a referenced item in the software.
Example: Examples show specific scenarios relating to your product and appear with a shaded
background.
Special terms
The first occurrence of special terms is shown in italics.
Illustrations
Illustrations appear in this manual to clarify text. They are examples only and do not necessarily
represent your actual system configuration, test application, or software.
Electronic manual conventions
This manual is available as an electronic document in the Portable Document File (PDF) format. It can
be viewed on any computer that has Adobe Acrobat Reader installed.
Hypertext links
The electronic document has many hypertext links displayed in a blue font. All blue words in the body
text, along with all contents entries and index page numbers, are hypertext links. When you click a
hypertext link, the application jumps to the corresponding topic.

Safety
MTS Landmark™ Tabletop Load Units - Product Information 15
Safety
General Safety Practices 16
Safety Practices Before Operating the System 17
Safety Practices While Operating the System 22
Load Unit Hazard Labels 24

Safety
16 MTS Landmark™ Tabletop Load Units - Product Information
General Safety Practices
If you have system related responsibilities (that is, if you are an operator, service engineer, or
maintenance person), you should study this manual carefully before you attempt to perform any test
system procedure.
You should receive training on this system or a similar system to ensure a thorough knowledge of your
equipment and the safety issues that are associated with its use. In addition, you should gain an
understanding of system functions by studying the other manuals supplied with your test system.
Contact MTS for information about the content and dates of training classes that are offered.
It is very important that you study the following safety information to ensure that your facility procedures
and the system’s operating environment do not contribute to or result in a hazardous situation.
Remember, you cannot eliminate all the hazards associated with this system, so you must learn and
remain aware of the hazards that apply to your system at all times. Use these safety guidelines to help
learn and identify hazards so that you can establish appropriate training and operating procedures and
acquire appropriate safety equipment (such as gloves, goggles, and hearing protection).
Each test system operates within a unique environment which includes the following known variables:
lFacility variables (facility variables include the structure, atmosphere, and utilities)
lUnauthorized customer modifications to the equipment
lOperator experience and specialization
lTest specimens
Because of these variables (and the possibility of others), your system can operate under unforeseen
circumstances that can result in an operating environment with unknown hazards.
Improper installation, operation, or maintenance of your system can result in hazardous conditions that
can cause death, personal injury, or damage to the equipment or to the specimen. Common sense and
a thorough knowledge of the system’s operating capabilities can help to determine an appropriate and
safe approach to its operation.
Observe the prescribed safety practices before and during system operation.
It is the customer’s responsibility to take the machine out of service and contact MTS Service if
discrepancies in system operation are found.

Safety
MTS Landmark™ Tabletop Load Units - Product Information 17
Safety Practices Before Operating the System
Before you apply power to the test system, review and complete all of the safety practices that are
applicable to your system. The goal, by doing this, is to improve the safety awareness of all personnel
involved with the system and to maintain, through visual inspections, the integrity of specific system
components.
Read all manuals
Study the contents of this manual and the other manuals provided with your system before attempting
to perform any system function for the first time. Procedures that seem relatively simple or intuitively
obvious can require a complete understanding of system operation to avoid unsafe or
dangerous situations.
Locate lockout/tagout points
Know where the lockout/tagout point is for each of the supply energies associated with your system.
This includes the hydraulic, pneumatic, electric, and water supplies (as appropriate) for your system to
ensure that the system is isolated from these energies when required.
Know facility safe procedures
Most facilities have internal procedures and rules regarding safe practices within the facility. Be aware
of these safe practices and incorporate them into your daily operation of the system.
Locate Emergency Stop buttons
Know the location of all the system Emergency Stop buttons so that you can stop the system quickly in
an emergency. Ensure that an Emergency Stop button is located within close proximity of the operator
at all times.
Know controls
Before you operate the system for the first time, make a trial run through the operating procedures with
the power off. Locate all hardware and software controls and know what their functions are and what
adjustments they require. If any control function or operating adjustment is not clear, review the
applicable information until you understand it thoroughly.
Have first aid available
Accidents can happen even when you are careful. Arrange your operator schedules so that a properly
trained person is always close by to render first aid. In addition, ensure that local emergency contact
information is posted clearly and in sight of the system operator.
Know potential crush and pinch points
Be aware of potential crush and pinch points on your system and keep personnel and equipment clear
of these areas.

Safety
18 MTS Landmark™ Tabletop Load Units - Product Information
An important consideration for servohydraulic systems is that when power is interrupted, it is likely that
stored accumulator pressure will persist for some time within the system. In addition, it is likely that as
stored energy dissipates, gravity will cause portions of the system to move.
Be aware of component movement with hydraulics off
For hydraulic systems, be aware that mechanical assemblies can shift or drift due to changes within
hydraulic hardware when hydraulics are turned off. This non-commanded movement is because oil
can transfer between the pressure and return ports and across internal components of the hydraulic
hardware. Be aware that this can happen, and clear the area around the mechanical assemblies when
hydraulics are turned off.
Know electrical hazards
When the system electrical power is turned on, minimize the potential for electrical shock hazards.
Wear clothing and use tools that are properly insulated for electrical work. Avoid contact with exposed
wiring or switch contacts.
Whenever possible, turn off electrical power when you work on or in proximity to any electrical system
component. Observe the same precautions as those given for any other high-voltage machinery.
Make sure that all electrical components are adequately grounded. Grounds must remain connected
and undisturbed at all times.
Ensure correct cable connection
If a system cable has been disconnected, ensure that you establish the correct cable-to-connector
relationship during reconnection. Incorrect cable connections can result in improper servo loop
phasing or an open servo loop condition, either of which can cause unstable or unexpected and
potentially dangerous system motions. Verify the correct cable-to-connector relationship by observing
the cable and connector labeling and the system wiring schematics.
Keep bystanders safely away
Keep bystanders at a safe distance from all equipment. Never allow bystanders to be in close proximity
of specimens or equipment while the test is running.
Wear proper clothing
Do not wear neckties, shop aprons, loose clothing or jewelry, or long hair that could get caught in
equipment and result in an injury. Remove loose clothing or jewelry and restrain long hair.
Remove flammable fluids
Remove flammable fluids from their containers or from components before you install the container or
component. If desired, you can replace the flammable fluid with a non-flammable fluid to maintain the
proper proportion of weight and balance.

Safety
MTS Landmark™ Tabletop Load Units - Product Information 19
Know compressed gas hazards
Your system may contain accumulators that require a high-pressure gas precharge (pressures that
exceed 138 bar [2000 psi]). High-pressure devices are potentially dangerous because a great amount
of energy is available in the event of an uncontrolled expansion or rupture.
Observe the following safety practices when you work with high-pressure air or gases:
lWhen you charge an accumulator, follow all the charging instructions provided in the
appropriate product information manuals. When precharging accumulators, properly identify
the type of gas to be used and the type of accumulator to be precharged.
lUse only dry-pumped nitrogen to precharge nitrogen-charged accumulators. (Dry-pumped
nitrogen can also be labeled “oil pumped” or “dry water pumped.”) Do not use compressed air
or oxygen for precharging: the temperature increase caused by rapid gas compression can
result in highly explosive conditions when hydraulic fluid is in the presence of oxygen or
compressed air.
lAlways follow the recommended bleeding procedures before you remove or disassemble
components that contain pressurized gas. When you bleed a gas or remove a fitting, hose, or
component that contains a gas, remember that many gases cannot support life. Therefore, as
the ratio of released gas to oxygen increases, so does the potential for suffocation.
lWear appropriate safety devices to protect your hearing. Escaping air or gas can create a
noise level that can damage your hearing.
lEnsure that all pressurized air or gas is bled out of a pneumatic or gas-charged device before
you start to disassemble it. A thorough understanding of the assembly and its pressurized
areas is necessary before you undertake any maintenance.
It may not be obvious or intuitive which bolts or fittings are used to restrain a pressurized area.
On some assemblies, you must remove a cover plate to gain access to the structural bolts.
Sometimes, to protect you from a rapid release of trapped gases, a small port is exposed
when you remove this cover plate. Exposing this port ensures that the gas precharge is fully
bled before disassembly. However, this is not the recommended procedure for bleeding a
pneumatic or gas-charged device, because it can expose you to the dangers of escaping
compressed gas and particulates that are expelled from the chamber or around the seals. Do
not assume that cover plates and ports are installed in all the critical locations.
Consult MTS when in doubt about the safety or reliability of any system-related procedure or
modification that involves devices that contain any type of compressed gas.
Check bolt ratings and torques
To ensure a reliable product, fasteners (such as bolts and tie rods) used in MTS-manufactured
systems are torqued to specific requirements. If a fastener is loosened or the configuration of a
component within the system is modified, see the system and component assembly drawings (located
on the System Documentation CD) to determine the correct fastener, fastener rating, and torque. Over
torquing or under torquing a fastener can create a hazardous situation due to the high forces and
pressures present in MTS test systems.

Safety
20 MTS Landmark™ Tabletop Load Units - Product Information
On rare occasions, a fastener can fail even when it is correctly installed. Failure usually occurs during
torquing, but it can occur several days later. Failure of a fastener can result in a high velocity projectile.
Therefore, it is a good practice to avoid stationing personnel in line with or below assemblies that
contain large or long fasteners.
Practice good housekeeping
Keep the floors in the work area clean. Industrial chemicals, such as hydraulic fluid, that are spilled on
any type of floor can result in a dangerous, slippery surface. Do not leave tools, fixtures, or other items
not specific to the test lying about on the floor, system, or decking.
Protect hoses and cables
Protect electrical cables from spilled fluids and from excessive temperatures that can cause the cables
to harden and eventually fail. Ensure that all cables have appropriate strain relief devices installed at
the cable and near the connector plug. Do not use the connector plug as a strain relief.
Protect all system hoses and cables from sharp or abrasive objects that can cause the hose or cable to
fail. Use a cable cover or cable tray where cables are in traffic locations. Never walk on hoses or cables
or move heavy objects over them. Route hoses and cables away from areas that expose them to
possible damage.
Provide proper hydraulic fluid filtration
For hydraulic systems equipped with a non-MTS hydraulic power unit, make sure that hydraulic fluid
filtration is established to maintain fluid cleanliness standards as stated in the Hydraulic Fluid Care
Manual (see the System Documentation CD). Particles present in the hydraulic fluid can cause erratic
or poor system response.
Protect accumulators from moving objects
For systems equipped with accumulators, protect accumulators with supports or guards. Do not strike
accumulators with moving objects. This could cause the accumulator(s) to separate from the manifold,
resulting in equipment damage and personal injury.
Record changes
If you change any operating procedure, write the change and the date of the change in the
appropriate manual.
Provide test area guards
Use protective guards such as cages, enclosures, and special laboratory layouts when you work with
hazardous test specimens (for example, brittle or fragmenting materials or materials that are
internally pressurized).
Do not exceed the Maximum Supply Pressure
For hydraulic systems and components, make sure that hydraulic supply pressure is limited to the
maximum pressure defined by the system operating limits. Read and review “System Operating
Limits” for the system.