Mecmesin 432-680 Guide

Installation & Operation of
Mecmesin Interlocked Machine
Guarding
431-971-01
June 2019

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Mecmesin Interlocked Machine Guarding Mecmesin  3
Scope of this document
Mecmesin standard interlocked guarding is designed to seamlessly integrate with a
Mecmesin OmniTest, MultiTest-dV and MultiTest-i motorised test stand. This document
covers the installation and operation of the following products:
Single Column Test Stands
 432-680 MultiTest 0.5 kN Interlocked Guard
 432-681 MultiTest 1.0 kN Interlocked Guard
 432-682 MultiTest 2.5 kN Interlocked Guard
 432-684 OmniTest 5.0 & 7.5 kN Interlocked Guard
Twin Column Test Stands
 805-017+G MultiTest-10i & Interlocked Guard
 805-016+G MultiTest-25i & Interlocked Guard
 805-023+G MultiTest-50i & Interlocked Guard
 815-004+G MultiTest-10xt & Interlocked Guard
 815-005+G MultiTest-25xt & Interlocked Guard
 815-006+G MultiTest-50xt & Interlocked Guard
 820-010+G OmniTest-10 & Interlocked Guard
 820-025+G OmniTest-25 & Interlocked Guard
 820-050+G OmniTest-50 & Interlocked Guard
For further guidance relating to individual test stands or software, please refer to their
individual user manuals.
Alternatively, electronic copies are available at – https://help.mecmesin.com
MECMESIN SUPPLIED INTERLOCKED MACHINE GUARDING HAS BEEN
DESIGNED AND MANUFACTURED IN A CONTROLLED SYSTEM TO ENSURE
COMPLIANCE WITH ALL RELEVANT EUROPEAN COMMUNITY DIRECTIVES.
DECLARATION OF CONFORMITY: A copy of the relevant Declarations of Conformity can be
found in the rear of this manual – See Section 11.
2019 © Mecmesin Ltd, supplied with Mecmesin test systems and not for redistribution
Part no. 431-971-01

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Contents
1. User Manual Guidance 6
2. Guard Safety Overview 7
3. Operator Safety
8
3.1 Training 8
3.2 Eye Protection and Protective Clothing 8
3.3 Recommended Operating Position 9
4. System Diagrams 10
4.1 MultiTest - 0.5 kN, 1.0 kN & 2.5 kN 10
4.2 OmniTest – 5.0 kN & 7.5 kN 11
4.3 Twin Column Test Stands – 10 kN & 25 kN 12
4.4 Twin Column Test Systems – 50 kN 13
5. Unpacking and Parts Supplied 14
5.1 Single Column Test Stands – Inspection and Unpacking 14
5.2 Twin Column Test Stands – Inspection and Unpacking 14
5.3 Packaging 14
5.4 Safe Handling of Single Column Interlock Guards 15
5.5 Additional Items Supplied with Your Guard 15
6. Single Column Guard Installation 17
6.1 Prerequisites 17
6.2 MultiTest Single Column - Installation Guide 18
6.3 OmniTest Single Column – Installation Guide 24
6.4 xt Console Installation 35
6.5 Single Column Override Plug 40
6.6 Twin Column Guard Bung 41
6.7 Checking the Interlock Function and Operation 42
6.8 MultiTest-dV and OmniTest Interlock Function Test 43
6.9 MultiTest-i Interlock Function Test 44
7. Operation 45
7.1 Scope of Use 45
7.2 MultiTest-dV and OmniTest Interlocked Guard Examples 46
7.3 MultiTest- i and xt Interlocked Guard Examples
49
7.4 Responsible Use of Interlock Override
51

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8. Servicing, Maintenance and Repair
52
8.1 Servicing 52
8.2 Maintenance & Cleaning 52
8.3 Repair 52
9. Specifications 53
9.1 Single Column Test Systems 53
9.2 Twin Column Test Systems 54
10. Dimensions 55
11. EC Declaration of Conformity 59
12. Operator Notes 61

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1. User Manual Guidance
Throughout this manual the icons shown below are used to identify important health and
safety information as well as additional installation/operation guidance.
WARNING
The following icon highlights a situation or condition that may lead to
possible personal injury or damage to the associated equipment. Do not
proceed until the warning is read and thoroughly understood.
Warning messages will be highlighted throughout the manual using bold
text.
CAUTION
The following icon indicates a situation or condition that could cause the
equipment to malfunction leading to possible damage. Do not proceed until
the caution message is read and thoroughly understood.
Caution messages will be highlighted throughout the manual using bold
text.
INFORMATION
The following icon indicates additional or supplementary information about
the action, activity or application.
Information notes will be highlighted throughout the manual using bold
text.

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2. Guard Safety Overview
Mecmesin interlocked guarding seamlessly integrates with a Mecmesin OmniTest,
MultiTest-dV and MultiTest-i motorised test stand. The guarding helps to provide additional
ingress protection to your test system, helping to reduce the risk of an operator or object
coming into contact with a moving test stand.
The guard is designed to be used in a dry, clean and tidy environment and should be placed
on a stable and load appropriate work platform away from potentially hazardous
environments or items.
Mecmesin motorised test stands are designed to be used while under constant supervision,
the addition of an interlocked guard does not alter this requirement, failure to monitor a test
stand in operation could lead to damage to the equipment or injury to others.
A standard Mecmesin guard is designed to prevent object ingress and operator
access to moving parts, and load bearing surfaces, while the machine is in use.
For materials or test methods where there is a potential for high energy impacts
with the guarding, Mecmesin recommend consultation with their design team,
(directly or through a local agent) to correctly specify application and safety
requirements.
Before use, it is recommended that all operators of the machinery are given
comprehensive training covering both the test stand and interlock guarding’s
functionality. Preventative safety measures prior to operation, in accordance
with all relevant operator manuals, should also be considered.
Risk assessment of the guarding and associated test stand is recommended and
should be carried out where appropriate. Internal company operating
procedures should also be generated where necessary.
Mecmesin supplied interlocked guarding systems should only be serviced by a
trained Mecmesin employee or approved agent. Any attempt by non-approved
personnel may invalidate any warranty claim and could lead to damage of
equipment or injury. Always ensure correct PPE procedures are in-place and
followed where stated.
All standard Mecmesin supplied guards are fitted with clear Polycarbonate
sheeting to help maximise viewing of the test area. These sheets are fitted to the
front of twin column systems and all sides of single column guarding (Front,
rear and sides).

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3. Operator Safety
3.1 Training
Before using either the test stand or guarding, it is essential that each person operating the
equipment is fully trained in the safe use of motorised testing machines and the guarding’s
functionality. Training can be arranged by contacting Mecmesin Ltd or an authorised
distributor.
Mecmesin test stands have the ability to generate forces large enough to cause
permanent injury to human limbs, when placed between the crosshead and the
base. Fingers, hands and other parts of the body should be kept away from the
moving crosshead and shroud opening.
Interlocked machine guards should be considered in all test methods as they
provide additional ingress protection to the end user. This helps to reduce the
risk of injuries occurring due to contact between the test stand and the operator.
3.2 Eye Protection and Protective Clothing
Although a standard Mecmesin interlocked guard will provide some protection against
projectiles that may be ejected when a brittle sample fails, the device has primarily been
designed to provide ingress protection to prevent the operator and other items from coming
into contact with the moving test stand.
For materials or test methods where there is a potential for high energy impacts with the
guarding, Mecmesin recommend consultation with their design team, (directly or through a
local agent) to correctly specify application and safety requirements.
Eye protection should always be used. Ensure an approved pair of safety
spectacles are worn at all times.
Additional personal protection may be necessary if destructive testing or
volatile failure of a test piece is likely. Consideration needs to be given to the
likely behaviour of the samples being tested and the use of any appropriate
personal protective equipment that may be needed.
A risk assessment should be carried out prior to using the test stand to ensure
that all necessary safety measures have been considered and carried out. It is
important to review the risk assessment if new tests or new samples are
introduced.

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3.3 Recommended Operating Position
Mecmesin recommends that the test stand and guard assembly are placed so that the front
panel is clearly visible and can be reached. For single column test stands, this will typically
require the base of the machine to be approximately at waist height.
An example of the recommended operation position is shown in the image above. Here the
operator has easy access to the front panel as well as a clear view over the entire test stand.
Please Note: The illustration shown above is not to scale.
Improper mounting of the test stand can lead to injury or damage to the
machine. This may occur instantly or over time, test stands that are placed too
high or low can lead to repetitive strain injuries.
For twin column and taller single column models the level at which the test
stand can be placed may be restricted by the height of the ceiling.

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4. System Diagrams
4.1 MultiTest - 0.5 kN, 1.0 kN & 2.5 kN
Below is a list of Mecmesin Interlocked Guards compatible with single column MultiTest
systems (please note that only 432-682 is shown in the system diagrams):
 432-680 MultiTest 0.5 kN Interlocked Guard
 432-681 MultiTest 1.0 kN Interlocked Guard
 432-682 MultiTest 2.5 kN Interlocked Guard
MultiTest System Diagram
1. Door Handle
2. Clear Polycarbonate Sheet
3. Control Panel Access
4. Interlock Mechanism
5. Rear Panel Access

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4.2 OmniTest – 5.0 kN & 7.5 kN
Below is a list of Mecmesin Interlocked Guards compatible with single column OmniTest
systems:
 432-684 OmniTest 5.0 & 7.5 kN Interlocked Guard
OmniTest – 5.0 kN & 7.5 kN System Diagram
1. Door Handle
2. Clear Polycarbonate Sheet
3. Control Panel Access
4. Interlock Mechanism
5. Rear Panel Access

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4.3 Twin Column Test Stands – 10 kN & 25 kN
Below is a list of all available 10 kN and 25 kN Mecmesin twin column test systems fitted
with interlocked guards (please note that 820-010+G/820-025+G is shown in the system
diagrams):
 805-017+G MultiTest-10i & Interlocked Guard
 805-016+G MultiTest-25i & Interlocked Guard
 815-004+G MultiTest-10xt & Interlocked Guard
 815-005+G MultiTest-25xt & Interlocked Guard
 820-010+G OmniTest-10 & Interlocked Guard
 820-025+G OmniTest-25 & Interlocked Guard
Twin Column – 10 kN & 25 kN System Diagram
1. Door Handle
2. Clear Polycarbonate Sheet
3. Control Panel Access
4. Side Connectors Panel
5. Force/Transducer Socket

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4.4 Twin Column Test Systems – 50 kN
Below is a list of all available 50 kN Mecmesin twin column test systems fitted with
interlocked guards (please note that only 820-050+G is shown in the system diagrams):
 805-023+G MultiTest-50i & Interlocked Guard
 815-006+G MultiTest-50xt & Interlocked Guard
 820-050+G OmniTest-50 & Interlocked Guard
Twin Column – 50 kN System Diagram
1. Door Handle
2. Clear Polycarbonate Sheet
3. Control Panel Access
4. Side Connectors Panel
5. Force/Transducer Socket

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5. Unpacking and Parts Supplied
5.1 Single Column Test Stands – Inspection and Unpacking
The specification for the interlocked guarding is located in Section 9 of this manual. Here
you can find the weight and dimensions of each interlocked guard model.
Before installing or operating your Mecmesin guarding please ensure that no visible damage
has occurred during the shipping of the guarding.
Important! If any damage is discovered do not proceed with the installation.
If any damage is present, contact your local supplier immediately who will decide the most
appropriate action and rectify the situation as quickly as possible.
Use safe handling procedures to remove heavy items from the packaging, if you
are unsure how to safely move the guarding consult your organisation’s health
and safety representative or contact your local Mecmesin agent for assistance.
Once the guarding is safely removed from the packaging, place it onto a stable
and level surface. Ensure this surface can safely carry the weight of the
guarding and is suitable to secure the system to.
5.2 Twin Column Test Stands – Inspection and Unpacking
Mecmesin twin column test stands ordered with interlocked guarding come pre-assembled
as one unit. For weight and dimensions of twin column test systems with an additional
interlocked guard, please see Section 9 of this manual.
For safe handling and placement of the test stand, please refer to your systems user manual
for more information.
5.3 Packaging
We strongly recommend that you retain the packaging for the machine guard as this can be
re-used if the device needs to be returned to your authorised Mecmesin distributor for any
servicing or modification.

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5.4 Safe Handling of Single Column Interlock Guards
To install the test stand’s guarding it is required to lift and move the interlocked guard,
improper lifting technique or handling of the guard could lead to injury or damage to the
equipment.
Before moving the guard, an assessment should be carried out by a qualified individual to
determine how to move the guarding safely.
Due to the weight and size of the guarding it is recommended that at least two
people are needed to lift a single column guard during the installation phase.
Refer to Section 9 for the precise weight of the guard.
5.5 Additional Items Supplied with Your Guard
The items supplied with your guard varies depending on the model. The next section
contains a list of the parts supplied with the interlocked guard. Please note some items are
only supplied for xt systems.
For single column test stands, a set of metric Allen keys are required to remove
and refit screws supplied in the guard assembly
5.5.1 432-680, 432-681, 432-682 - MultiTest 0.5 kN, 1.0 kN, 2.5 kN
Part No. Description Qty
409
-
080
Guard Foot Spacer Block
4
420
-
638
M6 x 35 Skt
Cap
4
-
Guard Door Key
2
408
-
843
10mm Tee Slot Nut
(only
required for xt-console
mounting)
1
408
-
921
Console Arm Mounting Bracket
(only required for xt-console
mounting)
1
420
-
076
M5x5 Grub Screw
(only required
for xt-console mounting)
2
420
-
536
M8x12 Skt Cap
(only required
for xt-console mounting)
2

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5.5.2 432-684 - OmniTest 5.0 kN & 7.5 kN Only
Part No.
Description
Qty
-
Guard Door Key
2
5.5.3 10 kN, 25 kN and 50 kN Twin Column Guarded Systems
Part No.
Description
Qty
-
Guard Door Key
2
408
-
921
Console Arm Mounting Bracket
(only required for xt-console
mounting)
1
420
-
536
M8x12 Skt Cap
(only required
for xt-console mounting)
2

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6. Single Column Guard Installation
Before installing a single column guard, it is important to read the next section in full, failure
to do so could lead to injury or damage to the test equipment.
6.1 Prerequisites
Before installing your single column guarding, ensure you are working in a suitable area. It
is important that there is a clear, stable work surface to place both the guard and the
associated test stand that is suitable to secure the system to, and that all potential risks have
been assessed before starting the installation phase.
Installation of interlocked machine guarding should only be carried out by qualified,
authorised personnel.
Failure to follow the installation instructions within this manual could result in serious
injury to the user or those around the machinery. It could also cause damage to the
equipment or surrounding environment.
Due to the weight and size of the guarding, it is recommended that at least two
people are needed to lift single column guarding during the installation phase.
Refer to Section 9 for the precise weight of the guard.
Mecmesin recommends that a full risk assessment is carried out covering the
placement and operation of the interlocked guard in conjunction with your test
stand fixtures. This should be carried out by the end user.
When fitted, the guard is designed to enclose the test stand and its working
area. The machine itself is placed within the enclosed assembly. Although the
guard will be supplied assembled, there is a requirement for some dismantling
in order to complete the installation process.

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6.2 MultiTest Single Column - Installation Guide
Step 1 – Unpacking the Guard
Unpack the guard assembly and safely lift it on to a stable work surface that is suitable to
secure the system to. Ensuring that the lower plate can be easily accessed. Unlock the guard
door using the key supplied.
Step 2 – Disconnecting the MultiTest System
Ensure that all connections, including the mains power lead, are disconnected from the
MultiTest’s rear panel.
Step 3 – Disassembling the Guard
Locate the four right-angled brackets that connect the guard to the lower base plate. These are
circled in the image above.
Using a suitable metric Allen key remove the existing fixings from the lower section of the
right-angled bracket as shown in the image above. This will release the lower base plate from
the guard.

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Step 4 – Removing the Guard’s Base Plate
Carefully lift the upper guard away from the base plate and place it to one side on a suitable
work surface.
Ensure safe handling procedures are followed when lifting the guarding
assembly.
Step 5 – Removing the MultiTest’s Feet
Remove the four rubber feet from their threaded holes located on the bottom of the
MultiTest system using a suitable flat head screwdriver. This is shown in the image above.
These holes will be used to mount the guard’s baseplate to the bottom of the test stand.

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Step 6 – Mounting the MultiTest to the Guard’s Base Plate
Secure the guard’s base plate to the test stand using the four supplied M6 x 35 countersunk
screws (420-638). Each screw should pass through the guard’s baseplate, then through one
of the supplied spacers (409-080), before locating in the threaded holes on the bottom of the
test stand. This is shown in the image below.
These spacers must be fitted between the guard’s baseplate and the test stand to ensure the
stand is sufficiently cooled during operation.