Ega Master 79902, 79903 Operating Instructions Manual
IMPACT WRENCHES
OPERATING INSTRUCTIONS
GUARANTEE ........................ 21
COD.79902
COD.79903
2
ENGLISH
SIGNAL WORD AND SYMBOL DEFINITION
The signal words and symbols used in the technical documentation (safety instructions, operating booklet, etc.)
have the following meaning:
This symbol
has the
following
meaning:
DANGER
Indicates an immediate danger, which causes serious injuries to any person or even death, if not
avoided.
WARNING
Indicates a threatening danger, which can cause serious injuries to any person or even death, if not
avoided.
CAUTION
Indicates a danger or unsafe procedure which can cause injuries to any person or material damages,
if not avoided.
NOTICE
Indicates a potentially dangerous situation which can cause damage to the product or its
surroundings, if not avoided.
WARNING – explosive atmosphere
Air and ammable substances can mix and result in an explosive atmosphere. In areas
exposed to explosion hazards, supplementary instructions and directives apply. Observe the safety
instructions of the owner as well.
WARNING – explosive material
Caution should be exercised when working with explosive material or in its surrounding area.
PROHIBITION – No naked ame, re, or ignition source and no smoking
Prevent from re and explosion hazards, which can be caused by naked ame, open ignition source or
by smoking.
Eating and drinking forbidden – The prohibition sign forbids the consumption of food.
REQUIREMENT – Observe the instruction
Ensure that the operation process is adhered to and avoid accidents and expensive down times due to
improper use of machines, devices and tools. By using the mandatory sign you refer to the adherence
of operation instructions.
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This symbol
has the
following
meaning:
NOTICE – Gives recommendations and important hints for handling the product
IMPORTANT – Indicates application advice and other particularly useful information.
REMARK:
In each case the symbol used does not replace the safety text. The text must always be read fully. In
some cases other symbols will be used with the signal words.
TECHNICAL SPECIFICATION
Operating pressure 6 bar
Drive square 1”
For screws up to M30
Torque 880 Nm
Max. Torque (hard thread) 1350 Nm
Air connection R 1/2“ female
Air consumption in average 1.4 m³/min
Weight 5.7kg
Noise pressure level L
pA
(1)
96 dB (A)
Noise power level L
WA
107 dB (A)
Vibration
(2)
4,5 m/s
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ATEX Classication
II 2G c T6
(1)
Remark: Measurement acc. to DIN EN ISO 15744 Measurement uncertainty K: 3 dB (A)
(2)
Remark: Measurement acc. to DIN EN ISO 28927-2 Measurement uncertainty K: 1.5 m/s
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The performance specications are guide values only, they depend basically on the application, the working
pressure and the accessories used.
INTENDED USE
The manufacturer machines are designed for industrial use only.
Only trained, skilled personnel are allowed to operate the machine. Impact wrenches are designed for the
tightening and loosening of screw joints in a range of performance dened by the manufacturer.
They have to be used in combination with appropriate:
• Power socket wrenches,
• extensions,
• joints,
• adapters.
It can be applied for:
• Construction, pipeline construction, chemical industry/reneries and oshore, as well as for underwater use.
IMPROPER USE
Any use deviating from the intended use as described is considered to be improper use.
• Working without personal protection equipment.
• Using the machine in an inadmissable area.
• Using the machine for drilling, mixing or grinding.
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PRODUCT DESCRIPTION
Fig. 1
1 Valve trigger
2 Reverse slide
3 Air connection/ Exhaust
4 Motor housing with pistol grip
5 Impact mechanism housing
6 Drive square
IDENTIFICATION
INSTALLATION
Requirements to the air supply
The pneumatic impact wrench works optimally at an operating pressure of 6(4) bar, measured at the air inlet.
The distance from the air supply to the pneumatic impact wrench should not be longer than 5 m.
We recommend installing an oiler or a maintenance unit upstream the machine for compressed air
preparation.
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Use acid and resin-free lubricating oil, like SAE 5W - SAE 10W, for proper functioning of the pneumatic impact
wrench.
Attention! Do not use viscous oil.
Use an antifreeze lubricant, e.g.:
. “BP-Energol AX 10”,
. “Kilfrost” ,
. or “Kompranol N74” in winter and if the compressed air is very moist.
The supplied compressed air has to be free of:
. Foreign particles,
. humidity.
Pay attention that all hoses:
. Have a cross section being large enough,
. do not have any restrictions or kinks,
. are designed for a minimum operating pressure of 6 bar,
. are replaced regularly at preventative maintenance,
. have an oil resistant inner surface and an abrasion-resistant outer surface,
. are proved and specied to be non-conductive when being used next to electric conductors.
Always use hoses, lubricating oil and antifreeze lubricants, which meet the local safety requirements for use
in areas exposed to explosion hazards.
Connecting the air supply to the pneumatic impact wrench
Remove the locking cap from the air connection (see g. 2). Connect the pneumatic hose (not contained in the
scope of delivery). For underwater applications, additionally screw-on an exhaust hose (not contained in the scope
of delivery). Instead of the exhaust hose, an exhaust nipple can be screwed in optionally.
Exhaust
Air inlet
Fig. 2
STARTUP
When connecting the machine, pay attention that the valve trigger 1 (see g. 3) is not actuated.
Fig.3
6
Blow out the pneumatic hose bevor connecting the machine.
Never connect a pneumatic hose being under pressure (see safety instructions for prevention of hazards caused
by compressed air). First connect the machine and then connect the compressed air supply.
Prior to starting the machine put the reverse slide for rotation direction left and right into the correct position.
For example, if you want to loosen a screw and the rotation direction is adjusted to a position for screwing in, this
can lead to violent uncontrolled movement of the pneumatic impact wrench.
Setting the rotation direction
The rotation direction is set with the reverse slide 2 (see g. 4).
Actuate the reverse slide only when the pneumatic impact wrench is switched o.
Rotation direction right: For screwing-in of screws and nuts turn the reverse slide clockwise.
Rotation direction left: For unscrewing of screws and nuts turn the reverse slide anticlockwise.
Rotation direction right
Fig. 4
Put the power socket wrench solidly and correctly on the screw head or the nut and start the pneumatic impact
wrench (see g. 5).
Start and stop
Fig. 5 Press or release
Insert tool
Slide the socket over the square drive (see g. 6).
Fig. 6
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Pay attention that the socket is rmly seated.
Only use sockets with suitable shank (see “Technical Specication“).
Remove the socket
Pull the socket from the square.
Sockets being stuck can be loosened by slight beats with a rubber hammer.
Change the sockets
When inserting a socket, pay attention that it is properly seated on the square drive 6. If the socket is not rmly
xed to the square drive, it can unscrew.
UNDERWATER USE
Before underwater operation
Ensure that:
. The exhaust hose is connected and xed at the supply hose,
. The exhaust hose is long enough to protrude above the water. In case of a short exhaust hose (in the
water) a reverse valve is used, so that water cannot get into the machine when plunging with the
machine,
. The machine is tested for leakage and for the functioning of all parts (drilling, blowing, valves, etc.).
Notice: Keep in mind that 10 meter water depth corresponds to 1 bar.
When working in greater depths match the diameter of the supply and exhaust hose appropriately.
After underwater operation
. Clean and dry the machine with compressed air.
. Spray all moving parts with multi-oil-spray.
BASIC SAFETY INSTRUCTIONS
Read operation instructions/safety instructions!
Before working on or with the tool, read the safety instructions and follow the instructions during operation.
Do not modify the machine or the machine tools and accessories after receipt. Any constructive changes or
modications need the manufacturer`s acceptance and have to be in compliance with the safety instructions. Use
the machine only for its determination. Consider the technical data of the equipment and the ambient temperatures.
Pay attention to labels, restrictions of use and special instruction notes on the machine tools and the machine itself.
Check regularly that the type plate and symbols on the machine are legible. If necessary, contact the manufacturer
to replace them. Only operators with technical knowledge, trained by authorized responsible technical personnel,
may install, adjust, operate, transport and store the machine.
EMPLOYER’S OBLIGATIONS
Generally, the employer is responsible for the faultless condition/operation of the machine and the adherence to
the safety regulations. The machine is designed and manufactured according to the technical safety regulations.
However, using it, there is still a risk of accidents to the operator or third parties or damage to the machine or
other objects. All current regulations and specications, which apply to the site of operation in regards to accident
prevention, installation of electrical and mechanical systems as well as radio interference must be considered.
IMPORTANT - The employer must make sure that...
• risk assessment is carried out for the specic risks, which can occur due to any operation of the machine,
• the function of the safety equipment is regularly checked,
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• the safety symbols and safety notes on the machine/ device and the operating instruction booklet are
considered,
• the safety instructions and the operating instruction booklet are available completely and in legible condition
on site with the machine.
The employer is obliged to allow personnel to work on the machine only, who:
• Are familiar with the basic work environment safety rules and accident preventing regulations. Also, those
persons must have been instructed in the correct use of the machine,
• have read and understood the safety and warning notes in the operating instruction booklet as well as all the
other documentation pertaining to the machine,
• have been tested at regular intervals in regards to their safety-conscious operation.
Safety-conscious working
Additionally to the safety instructions in this manual and the intended use, the following safety regulations have to
be considered:
• Accident prevention instructions, safety and operation regulations,
• explosion protection directives,
• safety regulations for the operation with hazardous material,
• eective norms and laws.
OPERATOR’S OBLIGATIONS
All persons who are assigned to work with the machine are obligated to:
• Pay always attention to the basic safety and accident preventing regulations,
• read always and follow the safety and warning notes in the operating instruction booklet.
EXPLANATION OF SYMBOLS FOR PROTECTIVE EQUIPMENT
AND FOR ACCIDENT PREVENTION
Use protective clothes – Protective clothes are necessary for diverse applications, e.g.
protection against chemicals, heat and cold. Provide appropriate protective clothes to your sta and
identify this requirement by convincing signage.
Use eye protection – whether goggles, laser safety goggles or etc. – identify areas where eye
protection has to be used, by appropriate mandatory signs.
Use ear protection – Capsule hearing protectors or hearing protectors have to be used for ear
protection, depending on the sound intensity at the work place.
Provide appropriate ear protection and identify the obligation for using ear protection by appropriate
mandatory signs.
Use foot protection – Foot injuries by vehicles, objects, hot material or hazardous
substances can be avoided by appropriate protective shoes. Equip your sta with
appropriate protective shoes and identify those requirements properly.
Use hand protection – Identify convincingly the safety requirement “Use hand protection“ by a gloves
sign, respectively a gloves symbol.
Use respiratory protection – Ensure that the specied protection equipment is available and that it is
used. Identify by mandatory signs, where and when respiratory masks are required.
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