HURST Unitool SC 250 M Manuel utilisateur
273055085 US
Unitool SC 250 M
(Original instruction manual)
replaced 11.2011
Instruction manual for rescue equipment
Edition 07.2014
Built to extend lives.™
1 Rotary knob (control valve)
2 Hand lever
3 Equipment body
4 Handle
5 Protective hose
6 Blade arm
2
1
10
6
7
4
8
9
3
5
7 Pivot bolt with self-locking
nut
8 Rotatable tool head
9 Grab handle
10 Carrying strap
2
3
Content Page
1. Hazard classes 4
2. Product safety 5
3. Intended use 8
4. Description of function 9
4.1 Description 9
4.2 Operational control 9
5. Operation 10
5.1 Controlling the working direction 10
5.2 Blade arm movement 10
6. Cutting, spreading, pulling and squeezing 11
6.1 Safety information 11
6.2 Cutting 12
6.3 Spreading 13
6.4 Pulling 13
6.5 Squeezing 14
7. Dismantling the equipment / deactivation after use 14
8. Care and maintenance 14
9. Repairs 16
9.1 General 16
9.2 Preventative maintenance 16
9.3 Repairs 17
10. Troubleshooting 19
11. Technical data 20
11.1 Combi tools 20
11.2 Pivot bolt tightening torques 21
11.3 Cutting performance 21
11.4 Temperature ranges for operating and storage 21
12. EC declarations of conformity 22
13. Notes 23
4
Wearing helmets with face protection
Wearing safety gloves
Wearing protective footwear
Respecting recycling requirements
Observing environmental protection regulations
Reading and following operating instructions
We distinguish between various categories of safety instructions. The table below gives you
an overview of the assignment of symbols (pictograms) and key words to the specific hazard
and possible consequences.
1. Hazard classes
Pictogram Damage /
injury to Key word Definition Consequences
human
DANGER! Immediate danger Death or major injury
WARNING! Potentially
dangerous
situation Potential death or
major injury
CAUTION! Less dangerous
situation Minor or slight injury
device
CAUTION! Danger of damage
to device /
environment
Damage to the
equipment, damage
to the environment,
damage to
surrounding materials
- NOTE
Advice for
application and
other important /
useful information
and advice
No injury / damage
to persons /
environment /
equipment
5
2. Product safety
Please ensure that no body
parts or clothing get stuck
between the visibly moving
parts (e.g. blade arms).
It is prohibited to work under
load if this load is lifted
exclusively by hydraulic
equipment. If this work
is absolutely imperative,
additional mechanical
supports must be used.
Wear protective clothing,
safety helmet with visor,
protective gloves
Inspect the equipment before
and after use for visible
defects or damage
Immediately report any
changes that occur (including
changes in operating
behaviour) to the appropriate
persons/departments! If
necessary, the device is to be
deactivated immediately and
secured!
Check all screwed fittings
for leaks and externally
detectable damage and
rectify immediately! Squirting
hydraulic fluid can result in
injuries and fires.
HURST products are developed and manufactured in order to guarantee the best
performance and quality when used properly.
Operator safety is the most important aspect of the product design. Furthermore, the
operating instructions are intended to help in using HURST products safely.
The generally applicable, legal and other binding regulations pertaining to the prevention of
accidents and protection of the environment apply and are to be implemented in addition to
the operating instructions.
The device may only be operated by persons with appropriate training in the safety aspects
of such equipment – otherwise, there is a danger of injury occurring.
Wewouldlike topointoutto all usersthattheyshould read carefullytheoperatinginstructions
and the instructions contained therein before they use the device, and that they should
carefully follow such.
We also recommend that you get instructed by a qualified trainer in the use of the product.
WARNING / CAUTION!
The operating instructions for the hoses, the accessories and the connected
hydraulic equipment must also be observed!
Even if you have already received instructions on how to use the equipment, you should still
read the following safety notes through again.
WARNING / CAUTION!
Ensure that the Technical Data of any accessories used comply with the
maximum power rating of the equipment!
6
In the event of malfunctions,
immediately deactivate the
equipment and secure it. The
malfunction is to be repaired
immediately.
Do not carry out any changes
(additions or conversions) to
the device without obtaining
the prior approval of HURST
Observe all safety and danger
notes on the device and in the
operating instructions.
All safety and danger notes
on the device are to be
kept complete in a legible
condition.
Any mode of operation which
impairs safety and/or stability
of the device is forbidden!
Comply with all specified
dates or dates specified in
the operating instructions
pertaining to regular controls /
inspections on the equipment.
Safety devices may never be
deactivated! The maximum permitted
operating pressure noted on
the equipment must not be
exceeded.
Before the device is switched
on/started up, and during its
operation, it must be ensured
that nobody is endangered by
the operation of the device.
Only original HURST
accessories and spare parts
may be used for repairs.
When working close to live
components and cables,
suitable measures must
be taken to avoid current
transfers or high-voltage
transfers to the equipment.
Please note, when cutting or
spreading: cutting, tearing
or breaking can cause
material falling down or being
catapulted away because of
sudden removal. Necessary
precautions need to be taken!
The build-up of static
charge with the potential
consequence of spark
formation is to be avoided
when handling the device.
Only touch any broken-off
parts or the cut-off parts
wearing protective gloves,
since the torn / cut edges can
be very sharp.
7
In addition to the safety information accompanying these operating instructions, all generally
applicable, legal and other mandatory national and international regulations pertaining to the
prevention of accidents and protection of the environment apply and must be complied with!
The device is filled with
a hydraulic fluid. These
hydraulic fluids can be
dangerous to health if
swallowed or their vapours
inhaled. Direct contact with
the skin is to be avoided for
the same reason. Please also
note that hydraulic liquids can
also have a negative effect on
biological systems.
When working with or storing
the device, ensure that the
function and the safety of the
device are not impaired by
the effects of stark external
temperatures or that the
device is damaged in any
way. Please note that the
device can also heat up over
a long period of use.
Ensure adequate lighting
when you are working. Before transporting the
device, always ensure
that the accessories are
positioned such that they
cannot cause an accident.
Always keep these operating
instructions within reach
where the device is used.
Ensure the proper disposal of
all removed parts, left-over oil
and hydraulic fluid as well as
packaging materials!
WARNING / CAUTION!
Sparking can occur when the equipment is used on metallic materials or when
metallic parts come into contact with hard or uneven surfaces!
Assess the nature of the working environment before operating the equipment!
WARNING / ATTENTION / CAUTION!
The equipment is to be used exclusively for the purpose stated in the operating
instructions (see Chapter entitled ‘Intended Use’) . Use of the equipment for any
purpose other than that stated or for any duty beyond its rated capacity shall be regarded as
imintended use. The manufacturer / supplier is not liable for any damages resulting from
imintended use. The risk shall be borne solely by the user.
Observanceoftheoperatinginstructionsandcompliancewiththeinspectionandmaintenance
conditions are part of the intended use.
Never work in a fatigued or intoxicated state!
8
3. Intended use
HURST handheld combi tools are specially designed for the rescue of casualties in road
accidents, rail accidents and in air travel, and for rescue from buildings. They serve the
purpose of freeing injured people in accidents e. g. by cutting doors, roof bars and hinges.
Trappedpersons canalsobe freedusingtheme. g.byforcing opendoorsand/or byremoving
obstacles with the aid of a chain set. HURST handheld combi tools can basically be used to
cut, pull, open, squeeze and lift objects.
You can obtain accessories and spare parts for the rescue device from your authorised
HURST dealer!
HURST handheld combi tools are also suitable for use underwater to depths of 40 m (131
ft) .
CAUTION!
In this case, you must strictly observe any leaks in order to avoid threats to the
environment.
WARNING / CAUTION!
All objects which are to be worked on are to be secured using stable supports or
substructures.
WARNING / ATTENTION / CAUTION!
The following may not be cut / squeezed:
- live electric cables
- pre-tensioned or hardened components, such as springs, spring steels,
steering columns and rollers
- pressurised piping containing gases or liquids,
- composite materials (steel/concrete)
- explosive objects, such as airbag cartridges
NEVER operate the rescue equipment at a higher operating pressure than that
stated in the chapter entitled ‘Technical Data’. A higher setting can result in
material damage and/or injuries.
9
4. Description of function
4.1 Description
The HURST handheld combi tools are a combi tool and handpump rolled into one unit.
Hydraulic power packs and energy supply or accumulators are therefore not required to
generate the required hydraulic pressure.
This is generated by moving the attached handle, in exactly the same manner as a hand
pump.
The working section of the tool is configured so that two equal opposing blade arms with
mechanical joints open or close symmetrically in order to open, squeeze, pull or cut objects.
In addition, HURST handheld combi tools are fitted with a tool head that can rotate through
360° to allow optimum application of the blade arms at all times and ensure optimum
pumping.
The working direction is adjusted before actuating the hand lever by turning the rotary knob
to the desired switching end point (see Cover Sheet Item 1).
4.2 Operational control
The hand lever is actuated to move the two blade arms in the specified working direction.
10
Counterclockwise= closing blade arms - Cutting
Clockwise = opening blade arms - Spreading
5.1 Controlling the working direction
5. Operation
5.2 Blade arm movement
The working direction is adjusted before actuating the hand lever by turning the rotary knob
to the desired switching end point.
Actuate the hand lever (up and down movement) to move the two blade arms in the set
working direction.
NOTE:
We recommend using full strokes when pumping. This means moving the hand
lever the full distance from one end stop to the other.
WARNING / CAUTION!
The hand lever can spring back when operating. This can be caused by excess
hydraulic pressure within the equipment or by external loading.
When operating the equipment, therefore, position yourself in such a way that you
will not be injured if the lever springs back.
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