fortum 4795010 Air Impact Wrench User Manual

fortum 4795010 Air Impact Wrench

Introduction

Dear customer, Thank you for the confidence you have shown in the Fortum® brand by purchasing this product. This product has been tested for reliability, safety and quality according to the prescribed norms and regulations of the European Union. Contact our customer and consulting centre for any questions at:
www.extol.eu service@madalbal.cz
Manufacturer:
Date of issue: 29. 5. 2019

OVERVIEW OF FORTUM® BRAND PROFESSIONAL PNEUMATIC TOOLS

RECOMMENDED ACCESSORIES FOR PNEUMATIC AIR IMPACT WRENCHES FROM OUR PRODUCT RANGE

Features

Fortum® brand air impact wrenches are intended for the fast and reliable tightening and loosening of nuts and bolts, e.g. on motor vehicles (tyres), for assembly work, etc., whilst providing a large torsional force amplified by the “TWIN HAMMER” system.

TWIN HAMMER system
It consists of a set of two hammers that simultaneously generate torsional force on the opposing sides of the spindle, which thus delivers a large evenly acting torque, while at the same time protecting bolt connections against damage. This system is used for higher torque impact wrenches and is intended namely for professional applications.

• Air impact wrenches are primarily intended for use in the trades and in industrial segments, in production facilities, motor vehicle workshops, where thanks to centralized compressed air systems, it is possible to significantly speed up and simplify work operations.
•  The Fortum® 4795010 air impact wrench has a very short body and is thereby significantly lighter with its centre of gravity shifted along the axis of the hand, meaning that it is particularly suitable for longer duration less demanding type of work. The impact wrench can be set to three power levels both for loosening as well as tightening, thereby protecting the screw joint against breakage. The pleasant anti-slip surface coating increases protection against the impact wrench slipping out of the hand when the handle is greasy.
•  The Fortum® 4795012 and Fortum® 4795013 impact wrenches can be set to three tightening power levels and one positioning level. Thanks to the composite part of the body, they have a lower weight making them more comfortable to hold and reduce fatigue, coupled with a rubber coated handle for dampening vibrations and a reduction of the cold feeling as is the case with direct metal contact.
• The tang made from Japanese steel guarantees a lifetime double that of standard impact wrenches.
• The Fortum®4795015 Professional composite pneumatic ratchet impact wrench is intended for tightening and loosening threaded connections. This is a powerful ratchet impact wrench with a higher torque than that of ratchet impact wrenches of lower categories.
• The composite body is comfortable to hold and is not cold during work.
• Thanks to its dimensions, it enables access to hard to reach places (e.g. when repairing motor vehicles, work on steel structures).

 Technical specifications

HIGH PERFORMANCE (TORQUE) REQUIREMENTS ON THE IMPACT WRENCH

• To achieve a high torque on the impact wrench, it is necessary to consider the complete air sys-tem: air source / compressor – air distribution lines / dist.hose-tool (impact wrench), because each of these system components must meet certain criteria in order for the required opera-ting parameters to be achieved, namely when the upper performance limit is to be achieved. Since the driving component of pneumatic tools is air, the air system is very dynamic and any change in the parameters in one part of the system affects the performance of the powered tool.
  IMPORTANT CRITERIA OF THE AIR SYSTEM FOR ENSURING HIGH PERFORMANCE OF THE IMPACT WRENCH

1. Sufficiently powerful compressor.
   The compressor must have a sufficient flow rate at the maximum permitted operating air pressure of the impact wrench. A lower compressor flow rate can, to a certain degree, be compensated for by a larger pressure vessel.

2. The hose must have a sufficiently large inner diameter.
   A hose with an insufficient inner diameter will not provide a sufficient supply (flow rate) of air to the pneumatic tool. If the compressor has a lower flow rate, try using an air hose with a larger inner diameter.

3.   Well lubricated and maintained machine.
   A pneumatic tool requires regular lubrication using pneumatic oil by means of a lubricator, which ensures a continuous supply of lubricant to the pneumatic tool, otherwise friction will increase on the internal parts, thus their wear and a reduction in performance. In the case of pneumatic tools, it is not sufficient to occasionally add pneumatic oil between use, rather it is important to ensure a continuous supply of lubricant in small amount to the pneumatic tools.

If the impact wrench does not have sufficient power due to a lower compressor flow rate, this can to a certain degree be compensated for in the following ways:

•  larger volume of the compressor’s pressure vessel (air chamber).

• air hose with a larger inner diameter,
  i. e. instead of a hose with an inner diameter of ∅ 9 mm, use a hose with an inner diameter of ∅ 13 mm, which will permit more air to be supplied to the tool.

•  an air hose with the shortest possible length,
  i. e. replace the 10 m hose with a 5 m hose, the longer the hose, the lower the air pressure at the outlet to the tool, see further in the text.

ADDITIONAL INFORMATION TO THE AFOREMENTIONED
The compressor must have a sufficient flow rate to cover the air consumption of the impact wrench at the max. operating pressure of 6.3 bar. In the event that the flow rate is insufficient, the impact wrench will exhibit lower torque (power). In the case of sufficiently long breaks, the insufficient flow rate of a compressor can be compensated for during shorter work periods with pneumatic tools by a larger pressure vessel on the compressor, which serves as an air storage reservoir.
The flow rate of the compressor is significantly dependent on pressure. The higher the operating pressure of the compressor, the greater is the loss also of the flow rate. Normally, due to commercial reasons only the flow rate is specified for a certain compressor, omitting the operating pressure, because in an attempt to achieve better sales, commercially it is more important to provide the higher values of the compressor‘s flow rate despite the fact that this flow rate may correspond to an operating pressure of only 2-3 bar. A compressor has the highest flow rate value at low operating pressure values and conversely the lowest with the highest operating pressure.
ATTENTION
The value that is most predicative, i.e. most accurately describes the performance of the compressor, is the flow rate value at an operating pressure of the compressor of 6 to 8 bar because pneumatic tools, e.g. an air impact wrench, to achieve high performance (torque), consumes a large amount of air at the maximum permitted operating air pressure of 6.3 bar, otherwise bolts will not be sufficiently tightened or loosened. There exists a simple method for quickly and easily verifying the performance of a compressor and for determining the flow rate levels at various pressures, and to thereby compare compressors of the same pressure vessel volumes from various manufacturers and, thereby, determine which is better at a corresponding price level.
COMPARISON OF COMPRESSOR PERFORMANCE FROM VARIOUS MANUFACTURERS
ATTENTION

• It is always necessary to compare compressors with the same pressure vessel volume and, likewise, to assume that a two-piston compressor with the same pressure vessel volume will be more powerful than a single-piston compressor. The most predicative value for the performance of a given compressor is gained by measuring the time it takes to pressurise the compressor‘s pressure vessel to a pressure of 8 bar with the air outflow shut off. Measure the time that it takes to pressurise the compressor‘s pressure vessel to a pressure of 8 bar with the air outflow shut off. For this measurement, use a stopwatch, e.g. on your mobile phone as it is necessary to also measure seconds.

• The higher performance compressor is the one able to pressurise the pressure vessel to a pressure of 8 bar in the shortest time.

• The pressurisation speed is not linearly correlated, and depends on the pressure in the compressor‘s pressure vessel, meaning that pressurising a pressure vessel from 2 to 3 bar takes less time than to pressurise from 7 to 8 bar, because when the motor is pushing out the piston it needs to act against a greater air pressure in the pressure vessel and the time required to pressurise the pressure vessel is thus indicative of the compressor‘s performance.
  DETERMINING THE FLOW RATE OF A COMPRESSOR

• Measure the time that it takes to pressurise the compressor‘s pressure vessel from the atmospheric pressure to a pressure of 3, 4, 5, 6, 7, 8 bar with the air outflow shut off.

• The flow rate of the compressor for the given operating pressure can easily be calculated from one of the formulae provided below.

• The air hose must have an inner diameter, otherwise it will not provide sufficient air supply to the impact wrench, thus preventing it from achieving its maxi-mum performance. Likewise, the air hose should not be spiraled, but rather unwind able, as a spiral hose reduces air flow through its greater resistance. The hose should be as short as possible with respect to feasible options. The longer the hose, the greater the pressure loss at the hose outlet, which may also reduce the performance of the impact wrench. To demonstrate, we‘ll provide an example available from literature, where if the inner diameter of an air hose
  (Pressure in the pressure vessel × volume of the pressure vessel × 60)
  Time for pressurisation to the given pressure in seconds    = Flow rate in L/min

For this calculation, it is necessary to know the volume of the compressor‘s pressure vessel and the time in seconds that it took to pressurise the pressure vessel to the monitored pressure.
Example:
The time for pressurising the compressor‘s pressure vessel with a volume of 24 liters to a pressure of 3 bar is 33 seconds. The flow rate of the compressor for this pressure is thus calculated from the aforementioned formula in the following manner: (3 bar × 24 liters × 60) / 33 seconds = 131 L/min. The flow rate of the compressor at a pressure of
3 bar is 131 L/min. If the time for pressurising the pressure vessel of the same compressor to a pressure of 8 bar is 1 minute 55 seconds (115 seconds), the above formula can be used to calculate that the flow rate at a pressure of 8 bar is: (8 bar × 24 liters × 60) / 115 seconds = 100 L/min.

• From the above-described it is evident that the flow rate (performance) of the compressor greatly depends on the operating pressure, which applies to all compressors without exception, as it is the result of physical laws, where growing air pressure in the pressure vessel leads to greater compression of air pushed out of the pneumatic cylinder into the pressure vessel and thereby also its volume. With growing pressure in the pressure vessel, therefore, the volume of the air supplied by the pneumatic cylinder to the pressure vessel decreases due to the effect of greater compression. is 10 mm, then at a hose length of 5 m the inflow pressure of 6.0 bar is reduced by 1.7 bar at the outlet, and at a hose length of 15 m it is reduced by 2.2 bar. The pressure loss at the hose outlet resulting from the length of the hose must be compensated for by a greater pressure at the hose inlet and precisely set using a pressure regulator at the inlet to the pneumatic tool to prevent exceeding the maximum operating pressure of the given tool. In the event that a long hose is used, an impact wave may result when the pneumatic tool is started.

ATTENTION

•  In order to achieve the require task (performance) of the pneumatic tool, it is always necessary to take into consideration the individual parts of the entire pneumatic system, i.e. sufficient flow rate of the compressor, its type and the necessary inner diameter of the connected air hose – sufficiently powerful tools. If, for example, the air hose has an inner diameter of, for example, 6 mm and the compressor is sufficiently powerful, it is possible that such
  a system may not be able to provide the maximum/necessary power for the pneumatic tool, because by its limited inner diameter, the hose will limit the necessary air supply to pneumatic tools, e.g. air impact wrench, which have a large air consumption.

•  Pressurised air has different dynamic properties and behavior than hydraulic fluid, e.g. transmission of power and, therefore, in the case when a system based on hydraulic fluid works for a certain process, the use of Pressurised air of the same pressure may not necessarily be sufficient, and it is necessary to verify the given process by means of a practical test.

• The torque of the air impact wrench was deter-mined by a direct methodology without the effect of friction forces acting on the area of contact between the head of the bolt/nut and the contact surface of the material into which the bolt is screwed.

When determining the torque of the impact wrench by means of a torque wrench, the deter-mined torque of the tightened bolt/nut is usually smaller due to the effect of the friction forces acting on the contact areas. The friction force grows with an increasing contact surface area and also significantly depends on the sliding friction on the contact surfaces, which depends on the type and slipperiness of the material.
COMPARATIVE TABLE FOR MAXIMUM TORQUE VALUES

Recommended accessories

AIR HOSE
For maximum performance of the impact wrench, an unwind able (not spiral) hose with an inner diameter of 9mm must be used; further information about the hose is available in chapter Technical specifications.
COMPRESSED AIR TREATMENT EQUIPMENT
Further information about functions and connection methods for treatment equipment is contained in the respective chapter below.

Equipment order number (fig.4)| Description of equipment (treatment units)
---|---
8865101| Filter
8865102| Pneumatic oil lubricator
8865103| Pressure reducing valve with pressure gauge
8865104| Pressure regulator with pressure gauge and filter
8865105| Pressure regulator with pressure gauge, filter and pneumatic oil atomizer

OIL FOR PNEUMATIC TOOLS
For operational reasons, it is necessary to regularly lubricate pneumatic tools with oil designed for pneumatic tools, which is available on the market from
a number of manufacturers. Oil designed for pneuma-tic tools does not froth and is not aggressive against sealing elements in the tool. Using an impact wrench without sufficient lubrication with oil designed for pneumatic tools will result in its damage.

Parts and control elements

• Position-description

1. Tool tang
2.  Rotation direction toggle switch, power regulation of tightening/loosening depending on model
3. Label with technical specifications
4. Male quick coupler
5.  Air outlet
6. Handle
7.  Trigger switch

• Other models differ in their appearance but the con-trol elements have the same function.

• Depending on the model, the rotation direction selector can be used to set individual levels for tightening or loosening torque as well as speed. The torque of individual tightening and loosening levels is provided in the technical specifications table. The number of loosening or tightening levels differs depending on the impact wrench model.
  

• Fortum ®4795015 Ratchet impact wrench Fig. 2, Position-description

1.  Rotation direction switch
2.  Handle
3.  Bolt (has no user function)
4. . Male quick coupler
5. Palm trigger switch
6. Tool tang

• On a ratchet impact wrench the rotation direction of the spindle is set by turning the switch (see fig. 2, position 1). In the direction of the arrow „R“ is for left spindle rotation and „L“ for right spindle rotation.

 Preparation for using the impact wrench

ATTENTION

•  Before using the impact wrench, carefully read the enti-re user‘s manual as the manufacturer takes no responsibility for damages on the tool or product caused by inappropriate use that is in contradiction with this user‘s manual. Keep the user‘s manual with the product so that its user may become acquainted with it. Prevent this user‘s manual from being destroyed.
  Selecting a sufficiently powerful compressor
  Air impact wrenches have a large air consumption and, therefore, to achieve maximum performance, the compressor must have a sufficient flow rate. In the case of non-continuous work with sufficiently long breaks between the use of the impact wrench, it is possible to compensate the insufficient flow rate of the compressor by a sufficient volume of the pressure vessel, for further information see chapter Technical specifications.
  Selecting an air hose for connection to the compressor

• To ensure the max. performance of the impact wrench, the air hose must have an inner diameter of at least 9 mm to enable a sufficient air flow rate, which is important for the performance of the impact wrench, see chapter Technical specifi-cations.

•  To connect the impact wrench to a compressor, it is necessary to select an air hose that is designed for compressed air.

•  The air hose is marked with the max. air pressure value, which must not be exceeded due to safety reasons. Thus, the air pressure value determined for powering the impact wrench must not be higher than the pressure value shown on the hose.

•  The hose ends must be fitted with a male quick coupler and a female quick coupler which are used to connect the hose to other equipment.
  Connecting the impact wrench to a com-pressor – air treatment
   WARNING

•  The air impact wrench is powered by compressed air that must be free of moisture-condensate and must contain a pneumatic oil additive. For this pur-pose, there is peripheral equipment pictured and described in the diagram on fig. 3, which must be installed in front of the air flowing into the impact wrench in the provided order.

• Compressed air that is not dehydrated and that does not contain a pneumatic oil additive will damage the internal parts of the air impact wrench.
  

• (the order numbers are provided under the images of the individual pieces of equipment)
  Order number of equipment (fig.3)| Description of equipment (treatment units)
  ---|---
  8865101| Filter
  8865102| Pneumatic oil lubricator (oiler)
  8865103| Pressure reducing valve with pressure gauge
  8865104| Pressure regulator with pressure gauge and filter

  ---

8865105

| Pressure regulator with pressure gauge, filter and pneumatic oil atomizer

 ATTENTION
Air treatment units are not included as accessories and must be purchased separately.
DESCRIPTION OF THE FUNCTION OF AIR TREATMENT UNITS
Filter (condensate separator) – removes water (condensate) from the compressed air that forms inside the compressor by the compression of water vapour that is contained in air. The filter must be an independent device or be combined with a pressure regulator and possibly also with a lubricator. Likewise, it may be an integral part at the air outlet from the compressor (factory installed on the compressor).
Oil lubricator (oiler) –  adds pneumatic oil to the current of compressed air, which then enters into the equipment where it protects its components against jamming and rapid wear. The lubricator must be an independent device or be a part of the system with a pressure regulator and possibly also with a filter (separator).
Note:
The treatment unit 8865105 has within it a pneumatic oil atomizer that creates an oil mist.

• Pressure regulator – makes it possible to set the correct air pressure that is necessary for the optimal and safe ope-ration of the impact wrench, as it may occur that the max. operating air pressure for the impact wrench is exceeded at the outlet from the compressor, or when a longer air hose is used a natural pressure loss occurs at the outlet, and therefore it is necessary to compensate for this loss by a higher pressure, and for this reason, it is necessary to install a pressure regulator to prevent the maximum permitted operating pressure level from being exceeded, see below in chapter Technical specifications.
  POSSIBLE METHODS OF CONNECTION

• The order of the treatment equipment in the diagram in fig. 3 must be maintained during connection.

• When using air treatment units, follow the information provided in their user‘s manuals.

• It is possible to use the following Extol® quick couplers for connecting the treatment equipment and they can be ordered under the provided order numbers.
  Types of Extol Premium® brass nickel-plated quick coupler connectors with a G 1/4“ thread Figure| Type| Ord. number
  ---|---|---
  **| Female coupler with outer thread| 8865111
  
  | Female coupler with inner thread| 8865114
  **| Male coupler with outer thread| 8865121
  ****| Male coupler with inner thread| 8865124

• Seal all threaded connections of the connected components using teflon tape to prevent air leakage.

• Tightly wind teflon tape on to the thread (e.g. Extol ord. no. 47532) and then gently push it against the thread, see fig. 4.
  

• It is possible to achieve the necessary mixture of air and pneumatic oil with the correct pressure in three different ways (air treatment equipment is lis-ted below with order numbers are shown in brackets):
  USING THREE TREATMENT UNITS (1 + 1 + 1)

• Oil lubricator (8865102)

•  Pressure regulator with pressure gauge (8865103)

•  Filter (8865101)
  PROCEDURE

1. Fill the oil lubricator (oiler) with pneumatic oil and screw it into the thread at the air inlet to the impact wrench.
    ATTENTION

   •  The air outlet from the lubricator (with the addition of pneumatic oil) must not enter the air pressure regulator or the separator because oil would accu-mulate inside them, which is undesirable. For this reason, the order of the treatment units must be maintained.
   • The oil lubricator must be installed directly at the tool‘s air inlet so that the pneumatic oil enters the tool and does not remain in the hose or other devices.

2.  Into the thread of the oil lubricator, screw in a pressure regulator, then from the other side of the regulator install a male quick coupler.

   • Connect the male and female quick couplers by sliding them into each other (fig. 5).
     ATTENTION

   • Always check that that the quick couplers are not damaged or clogged by material. The male quick coupler must be inserted into the female socket so that it clicks in. If a quick coupler is not sealing during pressurisation of the air system, then depressurise the system according to the procedure described below and replace it.

   • Protect quick couplers against damage and soilage.

   • To disconnect them, push the female quick coupler connector
     

   • Connecting
     

   • Disconnecting
     

   • connection diagram
     ATTENTION
     The pressure regulator must be installed close to the tool‘s air inlet as to avoid a pressure loss due to a longer air column in the hose before it.

3. At the air outlet from the compressor or before the pressure regulator (third in order from the handle of the impact wrench), install the filter for the removal of condensate.

• Fit the air filter with quick coupler fittings depending on whether the filter will be installed behind the pressure regulator or at the air outlet from the compressor (seal the threads using Teflon tape).

• Fitting the filter with quick coupler fittings for connection at the air outlet from the compressor and connection to an air hose
  

• filter connection (separator) Extol® Craft 8865101

USING TWO TREATMENT UNITS (1 + 2-IN-1)

• Oil lubricator (8865102)
• Pressure regulator with pressure gauge and filter (8865104)

PROCEDURE

• Install the oil lubricator at the air inlet to the impact wrench; for further explanation of the reason, see section A) Methods of connection
• Connect the pressure regulator with pressure gauge and filter to the oil lubricator on the impact wrench using a short air hose (do not install it directly on the handle of the impact wrench – the equipment can be hung).

• description of the pressure regulator with pressure gauge and filter Extol® 8865104
• Using an air hose, connect the regulator unit to a compressor.

 ATTENTION

• Connect the air outlet from the compressor to the correct hole on the treatment equipment, see fig.9.

USING ONE TREATMENT UNIT (3-IN-1)
Pressure regulator with pressure gauge, filter and pneumatic oil atomizer (8865105).

PROCEDURE

1. Fill the treatment unit‘s pneumatic oil tank with pneumatic oil.
2.  At the inlet to the treatment unit connect the air hose from the compressor. At the air outlet from the treatment unit, connect the air hose and connect it to the air inlet on the impact wrench,

• This treatment unit is intended for hanging and is not intended for direct connection to the air impact wrench but for connection via an air hose.

• Make sure that the air hose between this treatment unit and the impact wrench is not long, otherwise pneumatic oil will accumulate inside the hose and will not reach the impact wrench and, likewise, a pressure loss will result.
  

• description of the Extol® 8865105 Treatment unit

ATTENTION
Regularly check that the oil lubricator contains pneumatic oil, otherwise, the tool could be damaged as a result of insufficient lubrication.

Note:

• Certain compressors have a filter for separating condensate from air already built-in on the pressurized air inlet, therefore it is not necessary to install another filter.
  If you connect the impact wrench to a central air distribution station, take the following measures:

• The impact wrench may only be connected to an air source, where it is impossible to exceed the max. operating pressure by more than 10%, so if there is a risk of greater pressure then a reduction valve with a built-in pressure limiter must be installed.

• Make sure that the airlines are at an incline (the highest point in the system should be at the com-pressor). An easily accessible condensate collection filter should be installed at the lowest points.

• Branches from the air distribution system should be connected to the distribution from above.
  Branches going to the impact wrench must be equipped immediately at the connection point with an air treatment unit (water separator and oil lubricator).

Starting the compressor and set the pressure
After connecting up all the air treatment units, turn on the compressor and set the pressure on the pressure regulator at the air outlet from the compressor and on the pressure regulator of the treatment units to a maximum of up to 6.3 bar and allow the compressor‘s pressure vessel to pressurize to this pressure.

ATTENTION

•  For safety reasons, using the impact wrench should be performed at the lowest possible operating pressure – depending on the size of the tightened/loosened connection. Start working at a lower operating pressure and if it is insufficient, increase it to a sufficient value. Minimizing the necessary operating pressure will reduce the noise level, wear on the tool and power consumption.
•  Never exceed the max. operating air pressure of 6.3 bar.
• Check all connections for leaks. In the event of leaks, turn off the compressor, depressurize the pneumatic system (see chapter VI. Putting out of operation) and make the connections air tight.
• If you use the treatment unit 8865105-pressure regulator with pressure gauge, filter and pneumatic oil atomizer, then, after turning on the compressor, it is necessary to set and adjust the intensity of the pneumatic oil spray on the regulator.

 Using the impact wrench

SETTING THE ROTATION DIRECTION / SPEED CONTROL AND TORQUE

• Set the desired tang rotation direction by setting the rotation direction toggle switch to the side indicated by the arrows, whilst it is possible to set the loosening or tightening power based on the options of the model.
• The impact will be engaged automatically when tightening and loosening, i.e. during the highest load.

ATTENTION

• Do not adjust the rotation direction and the speed level while the impact wrench is running. Always release the trigger switch before adjusting.

FITTING DRIVE TOOLS

• On to the tool tang, fit a drive tool („a socket“) of the required size and slide the drive tool onto a nut or bolt.
  

ATTENTION

• Only put the drive tool on to the nut or bolt when it is not rotating. Otherwise, there is a danger of the „socket“ (drive tool) slipping, loss of control over the tool, and danger of injury.

ATTENTION

• Before using, first check that all parts are firmly attached and check that no part of the equipment, such as for example safety protective elements are damaged or incorrectly installed and also check the air hose for damaged plastic. A degraded air hose is also considered to constitute damage. Do not use equipment with damaged parts and have it repaired at an authorized service center for the brand – see chapter Servicing and maintenance.

STARTING / STOPPING

• Start the impact wrench by pressing the trigger switch.
• Before starting work, secure the workpiece (if it is not sufficiently stable with its own weight) using a suitable clamping device. Never secure the workpiece by holding it between your knees or legs.
• Before starting work, check the perfect working order of the impact wrench by performing a trial tightening/loosening of one or two bolt joints. In the event that there is any defect, do not use the tool and have it repaired at an authorized service center for the Extol® brand (see chapter Service repairs).
•  Stop the impact wrench by releasing the trigger switch.
•  Never secure the trigger switch for permanent operation, e.g. using a cable tie.
• When using the impact wrench, ensure that the work area is sufficiently ventilated as the air coming out of the pneumatic tool will accumulate in an unventilated area, containing oil particles, the inhalation of which is unhealthy.

Putting out of operation

ATTENTION
Prior to performing any maintenance and cleaning, disconnect the impact wrench from the air supply by turning off the compressor and disconnecting the air supply (air hose).
Before the next work break or ending work, per-form the following tasks.

1. Turn off the compressor, bleed the air system and the pressure vessel by pressing the impact wrench trigger, holding it down until the tang stops rotating. If necessary, bleed the residual pressure from the compressor using the overpressure relief valve on the compressor. Before disassembling, the air system assembly must be depressurized.
2.  Disassemble the air system assembly.
3. Drain condensate from the filter tank (separator of condensate from air) and the pressure vessel of the compressor (after completed work).

Reference to the technical specifications label

Meets respective EU requirements.

Serial number.

| The serial number indicates the year, month and product series number.

• Safety instructions for work with the impact wrench

•  Do not use the impact wrench if you are tired, under the influence of alcohol or other substances affecting your concentration. Prevent children, uninstructed or mentally or physically unfit persons from using the tool. Ensure that children do not play with the tool.

• The user or the user‘s employer must assess the specific risks that may arise as the result of every use.

• While working, use suitable safety glasses for protection against flying items, gloves for protection against bruising and vibrations, suitable anti-slip footwear, suitable hearing protection, as exposure to noise may result in permanent hearing damage. Furthermore, if necessary, wear suitable respiratory tract protection because work with the tool may result in dust or other materials being raised by the air being blown out of the tool, which is damaging to health. In the event that it is possible for dust to swirl up already during the use of the impact wrench or during maintenance, then it should not be inhaled and skin should be protected against contact with this dust by means of gloves as it may cause serious skin inflammation. Inhalation of dust is damaging to health. During work, prevent access to persons without protective aids, and animals.

• Do not breathe the expelled air as it contains pneumatic oil.

•  Do not point the expelled air at yourself or bystanders or animals. The expelled air may leave greasy stains on clothing. Compressed air may cause injury.

• Before starting work, put aside any watches, jewelry, secure loose clothing, long hair, etc. so these cannot become caught in the rotating parts.

• While working, ensure that you have a comfortable, yet stable stance because when tightening/loosening reaction impacts occur, which may result in the operator losing balance. For this reason, do not use the impact wrench on ladders, chairs, scaffolding or on another insufficiently stable surface, e.g. if when moving from one place to another it is necessary to use scaffolding, stairs, ladders or roof battens, etc.

• Work in a well-lit location.

• Do not touch rotating parts, injuries could result. Keep your hands (hand) at a sufficient distance from the work area.

•  Before work, check the drive tool (socket) for damage.

• Do not use the impact wrench in an environment where there is a fire or explosion hazard.

• Do not carry the impact wrench while it is running.

• For safety reasons, the trigger switch must not be locked in the pressed position.

• During work, the drive tool or nuts and bolts may heat up. Be especially careful not to burn yourself.

• While working, make sure that the tool is running smoothly: during any kind of non-standard operation or unusual or increased noise, immediately turn the tool off and identify the cause of this non-standard condition. If you are unsuccessful in remedying the defect without it being necessary to perform a task inside the tool, have it repaired at an authorised service centre for the Extol® brand.

• Never use the impact wrench for purposes other than those for which it is intended.

•  For work, use only undamaged and not worn-out drive tools and attachments. This will reduce vibrations and the risk of injury. Always use drive tools and atta-chments intended for this type of tool.

•  Use only compressed air to drive the impact wrench, never oxygen or other gases.

•  Never exceed the maximum compressed air operating pressure for the impact wrench (6.3 bar).

•  Connect the impact wrench to the compressor only using an air pressure hose with quick couplers.

• When connecting an air hose to the impact wrench, make sure that the trigger switch is in the „off“ position.

• Regulate air pressure only by means of a reduction valve.

•  Hold the pressure hose when disconnecting it to prevent lashing.

• Before exchanging the drive tool, repairs or maintenance, disconnect the impact wrench from the source of compressed air.

•  Do not leave the impact wrench running without load.

• Wait until the tang comes to a complete stop before putting down the impact wrench.

• Prevent the air hose from coming into contact with sharp edges or high temperatures. In the event that the hose is damaged, replace it.

• Never pull the impact wrench by the air hose and do not disconnect connections by pulling on the hose.

•  Never carry the impact wrench holding just the air hose.

•  The handle of the impact wrench should not be held too rigidly, because a firmer grip transfers vibrations to the hand of the operator.

•  Do not hold the impact wrench with a wet or greasy hand as the impact wrench could slip out of the hand.

• Do not use the impact wrench in confined areas, other-wise hand bruising may result as a result of potential reactive torque.

•  Before work, make sure that the material being worked on has no hidden electricity, water or gas utility lines, etc. (if this can be reasonably assumed).
  Damaging these utility lines could result in injury and/or material damages. To locate such utility lines, use a suitable metal and electricity detector. Compare the location of the utility lines with drawing documentation because detection devices may not necessarily be accurate.

•  Hold the tool by the insulated grip parts of the tool (handles), otherwise, in the case of damaged live conductor wires, life-threatening voltage could be conducted through the uninsulated metal parts of the tool, which could cause injury by electrical shock.

•  Avoid weakening the structure or damaging the tool, e. g. by using it for demolition work or digging, modifications, which were not approved by the manufacturer, guiding it along guide boards made from hard materials, e.g. from steel, dropping it on the floor or pushing it along the floor, using it as a hammer or using any other force.

• When using the impact wrench, the operator may have unpleasant feelings in the hands, arms, shoulders or other parts of the body as a result of vibrations. In the event that the operator feels problems during work, e. g. irregular pulse, tingling, whitening of the skin, insensitivity in a certain part of the body, burning feeling and stiffness, etc., stop working and consult these problems with a medical doctor. The acting vibrations have an effect on nerves and blood vessels in the hands and arms. When working in a cold environment, use warm clothing and keep hands warm and dry.

• Sound pressure and sound power values specified in the technical specifications relate to the tool itself and do not represent the resulting noise at the work site. The noise created at the work site depends, for example, on the work environment, the workpiece, the number of insertions, etc.
  Depending on the conditions and location of the workpiece, take steps to reduce noise, e.g. by placing the workpiece on an underlay to reduce the noise level, by reducing the vibration of the workpiece by clamping it, setting a lower possible operating pressure for specific parts of the work, etc..

GENERAL SAFETY INSTRUCTIONS

•  In the event of multiple hazards, it is necessary to read the safety instructions and understand them before installation, performing repairs or maintenance, replacement of accessories or when working in the vicinity of tools for threaded connections. The result of not adhering to this requirement may be a serious injury.
•  The installation, adjustment and use of tools for threaded connections should only be performed by qualified and trained personnel.
• Tools for threaded connections must not be modified. Modifications may lower the effectiveness of safety measures and increase the risks for the user.
• The safety instructions must be kept for future reference; must be provided to the user.
•  A tool for threaded connections must not be used when damaged.
•  The tool must be periodically inspected to verify that the nominal values and designations required by this part of ISO 11148 are legibly marked on the tool. If necessary, the employer/user, must contact the manufacturer to request a replacement label.

FRAGMENT EJECTION HAZARD

•  The user must be aware of the fact that as a result of a defect on the workpiece or accessories or possibly of the tool itself, high-speed projectiles may be ejected.
•  Impact-resistant eye protection must always be worn while the tool for threaded connections is running. The required level of protection must be individually assessed for each type of use.
•  A check must be performed to ensure that the workpiece is securely fastened.

HAZARDS RELATED TO GETTING CAUGHT / WINDING ON

•  In the event that loose clothing, personal jewelry, necklaces, loose hair or gloves are not kept at a sufficient distance from the tool or accessories, chocking, scalping and/or lacerations may result.
•  Gloves may become caught in the rotating drive and may result in injury or broken fingers.
• The rotating drive socket or attachment can easily catch gloves with a rubber surface coating or reinforced with a metal material.
• Warning against wearing loose gloves that are too big or gloves with cut or worn out material in the vicinity of the fingers.
•  Warning against enclosing the drive, socket or drive attachment with the free hand.
•  Hands must be kept at a sufficient distance from the rotating drive.

HAZARDS DURING OPERATION

•  Using the tool may present a hazard to the hands of the user, including compression, impact, cuts, grazes and hazards from the effects of heat. Appropriate gloves should be worn for hand protection.
• The users and maintenance personnel must be physically strong enough to handle the size, weight, and power of the tool.
•  The tool must be held in the correct manner; the user must be ready to handle normal as well as sudden movements and have both hands available.
• The user must maintain a balanced and safe stance.
• In cases where an element for blocking reactionary torque is required, it is recommended, if possible, to use a support arm. If this is not possible, it is recommended to use side handles on tools in the die configuration and with a pistol grip handle. In the case of impact wrenches with an angle configuration, supports are recommended. In any case, it is recommended to utilize elements for blocking reactionary torque on die tools above 4 Nm, on pistol grip handle tools above 10 Nm and on nut, impact wrenches in angle configuration above 60 Nm.
•  The control mechanism for starting and stopping must be released in the event of a power outage.
•  Lubricants recommended by the manufacturer must be used.
• Warning against finger compression on impact wrenches with an open key.
• Warning against using the tool in confined areas and warning against compression of the hand between the tool and the workpiece, particularly when loosening.

HAZARDS ARISING FROM REPETITIVE MOVEMENTS

• When using the tool for threaded joints, the user may be exposed to the discomfort of hands, arms, shoulders, neck and other parts of the body.
• When using the tool for threaded joints, it is recommended that the user positions himself in a comfortable and safe stance, and avoids inappropriate positions or positions where he is not balanced. During longer duration work tasks, the user should change position, which may help to avoid discomfort and fatigue.
• If the user starts suffering from symptoms such as permanent or repetitive discomfort, pain, tremors, tingling, desensitization, burning feeling or stiffness, then these warning symptoms should not be ignored. The user should inform the employer and consult the situation with a qualified healthcare professional.

HAZARDS ARISING FROM ACCESSORIES

• The tool for threaded joints must be disconnected from the air supply before tools or accessories are changed.
• The user must not touch the sockets or accessories during impact operation, as this increases the risk of cuts, grazes or vibration-induced injuries.
• Only the size and type of accessories and consumables recommended by the manufacturer of the tool for threaded joints may be used. Other types or sizes of accessories or consumables must not be used.
• Only sockets designed for impact wrenches of nominal size and in good condition may be used because sockets and accessories in poor condition or intended for manu-al work may tear apart when used with impact drills and eject a projectile.

WORKPLACE HAZARDS

• Slipping, tripping and falls are the main causes of injury at the workplace. Warning against slippery surfaces caused by the use of tools and also against the danger of tripping on air utility lines or hydraulic hoses.
• In unknown locations, movement should be performed with care. There may exist hidden hazards such as electrical wiring or other utility lines.
•  Tools for threaded tools are not intended for use in potentially explosive environments and are generally not insulated against contact with live electrical conduits.
• The workplace must be checked for electrical cables, gas pipes, etc., which could present a hazard as a result of the tool being used.

HAZARDS CAUSED BY DUST AND FUMES

• Dust and fumes created during the use of the tool for threaded joints may result in illness (for example malignant tumor illness, congenital disorders, asthma, and/or skin inflammation); the basic requirement is the assessment of risks and implementation of suitable measures for reducing these hazards.
•  Risk assessment should include the dust created during the use of the tool and the potential of existing damaging dust.
•  The exhaust must be setup in such a manner that the damaging effects of dust in a dusty environment are minimized.
•  If dust or fumes are being created, the priority must be to reduce them at the point of their emission.
• All integral main components or accessories for the capture, exhaust or reduction of the amount of airborne dust or fumes must be properly used and maintained in accordance with the instructions of the manufacturer.
• Respiratory protection must be used in accordance with the instructions of the employer or as required by workplace health and safety regulations.

HAZARDS RESULTING FROM NOISE
Exposure to high levels of noise may cause permanent, incapacitating hearing loss and other problems such as tinnitus (ringing, humming, whistling or roaring in the ears). For these hazards, the basic requirement is the assessment of risks and the implementation of suitable measures for managing these hazards.

•  Suitable risk reduction management methods may include measures such as noise dampening materials preventing the „ringing“ of workpieces.

• Hearing protection must be used in accordance with the instructions of the manufacturer and as required by workplace health and safety regulations.

• Tools for threaded joints must be used and maintained as recommended in the user‘s manual to prevent unnecessarily increasing the noise level.

• In the event that the tool is supplied together with
  a damper, then an inspection must always be performed to ensure that it is functioning during the use of the tool and in proper working order.

• Consumables/sockets must be selected, maintained and replaced as recommended in the user‘s manual to prevent unnecessarily increasing the noise level.

HAZARDS RESULTING FROM VIBRATIONS
Operating instructions must provide information about the hazards resulting from vibrations, which were not eliminated during the design and construction of the tool, and which persists as residual risks resulting from vibrations. It must enable the employers to identify the circumstances under which the users will most probably be exposed to vibration-related hazards. In the event that the vibration emission value as defined by ISO 28927-2 does not represent a suitable level of vibration during the assumed use (predictable incorrect forms of use) of the tool, then additional information and/or warnings must be issued enabling the assessment and management of vibration-related risks. The recommended connection dimensions for spindles and drive sockets help to reduce vibrations, see ISO/TS 21108.

•  Exposure to vibrations may result in incapacitating damage to nerves and blood circulation in the hands and arms.
• Hands must be kept at a sufficient distance from the sockets for tightening the nuts.
•  When working in a cold environment, warm clothing must be worn and hands must be kept warm and dry.
•  Tools for threaded joints must cease to be used in the event that the user feels dullness, tingling, pain or whitening of the skin on fingers or hands, and this must be reported to the employer and consulted with a doctor.
• Tools for threaded joints must be used and maintained as recommended in the user‘s manual to prevent unnecessarily increasing the vibration level.
• Warning against the use of worn out or damaged sockets or attachments, as such parts will probably cause significantly increased levels of vibrations.
• Consumables/sockets must be selected, maintained and replaced as recommended in the user‘s manual to prevent unnecessarily increasing the vibration level.
•  The use of an axial adapter is recommended if feasible.
•  The weight of the tool should, if possible, be secured by mounting in a stand using a mounting device or balancer.
•  The tool must be held with a light, yet safe, grip respecting the considered reaction forces, as increased gripping force will generally increase the vibration-related hazards.

ADDITIONAL SAFETY INSTRUCTIONS FOR PNEUMATIC TOOLS

•  Compressed air may cause serious injury:
  • the air supply must always be shut off, the pneumatic pressure hose must be dry and the tool must be disconnected from the air supply when the tool is not being used, before accessories are changed or when performing repairs;
  • air must never be blown on the the user or on to anybody else.
• If the hose lashes out (violent movement), it may cause serious injury. Damaged or loosened hoses or couplings must always be inspected.
•  Cold air must be guided away from the hands.
• Warning against using quick couplers on the inlet to the tool. Threaded hose couplers from hardened steel (or a material with a comparable impact resistance) must be used.
• When using universal rotating couplers (couplers with cogs), locking pins and safety tapes to prevent the hose from lashing out must be installed, to prevent possible faults in the connection between the hose and the tool, or for connections between hoses.
• The maximum air pressure shown on the tool must not be exceeded.
•  On tools equipped with torque control and tools with continuous rotation, air pressure has a critical effect on performance. Therefore, it is necessary that hose length and diameter requirements are specified.
• Pneumatic tools must never be carried by the hose.

Service repairs

•  If, in the event of a malfunction or potential fault on the impact wrench, work is required on the internal parts, then such repairs must be performed only at an authorized service center for the Extol® brand.
• Apart from regular lubrication using pneumatic oil, the product does not require any special maintenance. National workplace safety inspection codes may require regular maintenance and inspection tasks to be performed. Verification of speed after service maintenance can be performed on a standardized screw joint by measuring the time taken until a screw joint is tightened to the required tension using a new product and then the serviced product under constant operating air pressure and compressor flow rate. In a similar manner, it is possible to also check vibration on the handle at a load by means of a subjective comparison between a new product and the serviced product.
• Damaged parts must only be replaced with the original parts of the manufacturer.
• To claim the right to a warranty repair, please contact the merchant from whom you purchased the product and they will organize repairs at an authorized service center for the Extol® brand. In the case of a post-warranty repair, please contact an authorized service center for the Extol® brand. You will find a list of service centers at the website in the user‘s manual.
  Free warranty repairs relate only to a manufacturing defects on the product (hidden and external) do not relate to the wear of the product as a result of excessive load or normal use or damage of the product caused by its incorrect use.

Storage

Store the cleaning tool in a safe location that is out of reach of children and where temperatures do not exceed 45°. Protect the tool against direct sunlight, radiant heat sources, high humidity and ingression of water.

Waste disposal

• Throw packaging materials into a container for the respective sorted waste.
• Do not pour waste fluids (condensates from the separator and the compressor‘s pressure vessel) into the sewage system or the environment, rather collect it into a container and hand it over for ecological disposal at collection points suitable for hazardous waste.

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