Fervi 786 Manuale utente
OPERATION AND
MAINTENANCE MANUAL
Air impact wrench
Art. 0786
ORIGINAL INSTRUCTIONS
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FOREWORD
Read this manual before operating any machinery
ORIGINAL INSTRUCTIONS
Before starting any operation it is compulsory to read this instruction manual. The guarantee
of smooth operation and full performance of the machine is highly dependent on the
application of all the instructions contained in this manual.
Operator Qualification
The workers responsible for using this object must have all the necessary information,
education and receive adequate training regarding safety, including:
a) The conditions of use of the equipment;
b) Foreseeable abnormal situations, pursuant to Article 73 of Legislative Decree
81/08.
We guarantee the product's conformity to specifications and technical instructions
described in the Manual on the date of issue, listed on this page; however, the
machine may be subject to potentially major technical changes in the future, without
the Manual being updated.
Therefore, see FERVI for information about modifications that could be implemented.
REV. 2 November 2013
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CONTENTS
1 GENERAL SAFETY INSTRUCTIONS............................................................. 4
1.1 Risks Associated with the Work Area ............................................................................4
1.2 Risks Associated with the Presence of Rotating and/or Moving Parts...........................4
1.3 Personal protective equipment .....................................................................................5
1.4 Technical support..........................................................................................................5
2 DESCRIPTION OF THE AIR IMPACT WRENCH AND INTENDED USE............ 6
2.1 Technical specifications ................................................................................................7
2.2 Identification plate .......................................................................................................7
3 IMPROPER USE AND CONTRAINDICATIONS.............................................. 8
4 COMMISSIONING...................................................................................... 9
4.1 General warnings ........................................................................................................ 10
5 HOW TO USE ........................................................................................... 11
5.1 Mounting of sockets and extensions ...........................................................................11
5.2 Power On/Off.............................................................................................................. 11
6 MAINTENANCE AND CLEANING............................................................... 14
7 EXPLODED VIEW AND SPARE PARTS....................................................... 15
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1 GENERAL SAFETY INSTRUCTIONS
1. During use, maintain control of the tool.
2. The operators represent the most important aspect of safety. To best protect against
the risk of injury, work cautiously and carefully.
3. The pneumatic tool should not be used and repaired by someone under the influence of
drugs or alcohol.
4. When a fault / defect is detected, immediately disconnect the power supply cord from
the tool.
1.1 Risks Associated with the Work Area
1. Keep unqualified people, children, etc. away from the work environment and the
pneumatic tool.
2. Only use to tool with proper lighting and visibility.
3. Pay attention in unknown work environments and areas. The pneumatic tool is not
isolated from the power supply.
4. Be especially careful to avoid contact with dust, air jets or other pollutants. If
necessary, wear a dust mask.
5. It is important to maintain a stable and secure position while working. Beware of air
hoses, which can cause you to trip and fall.
1.2 Risks Associated with the Presence of Rotating and/or Moving
Parts
Grab the pneumatic tool correctly, using the appropriate "gun" handle.
Never touch the rotating parts of the tool, particularly the socket-holder quick connector.
Vibration, repetitive motions and uncomfortable positions may be harmful to your arms and
hands. Discontinue use of the air impact wrench if you experience symptoms of physical
discomfort, tingling and pain.
While working, do not wear loose clothing or jewellery that could get caught in the moving
parts of the tool. Similarly, put hair back in a net or a cap.
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1.3 Personal protective equipment
When using the pneumatic tool, always wear the following:
Safety shoes Work gloves Hearing protection
(cap, earplugs, etc.) Protective goggles
Figure 1 – Personal Protective Equipment.
1.4 Technical support
For any problems and/or concerns, please contact, without hesitation, the Customer Service
Department of the dealer, who has specialised staff, specific equipment and spare parts.
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2 DESCRIPTION OF THE AIR IMPACT WRENCH AND
INTENDED USE
The Air Impact Wrench (Art. 0786) is a portable pneumatic tool that is used to tighten
and loosen nuts, bolts and threaded screws.
The wrench is composed of:
1. the "gun" shaped shell, which contains the vane rotor and other moving parts;
2. the square drive for the assembly of the sockets;
3. the selector button for the direction of rotation;
4. the start "trigger" lever for the wrench.
5. the speed adjustment knob;
6. compressed air quick coupling
Figure 2 – Overview.
1Body 4Trigger
2Square drive 5Speed control knobs
3Rotation direction button 6Compressed air quick coupling
1
2
3
4
5
6
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2.1 Technical specifications
Quick release connector
(square) 3/4” Operating pressure
(bar - psi) 6 / 90
Torque
(Nm) 950 Air intake
(l/min - CFM) 240 / 8
Rotation speed
(rev/min) 4200
Empty weight
(just the wrench)
(kg)
4.8
Acoustic power level emitted into the environment (dB(A)) running at full
speed unloaded. 86.3
2.2 Identification plate
Affixed to each pneumatic gun is a special identification plate (see Figure 3), which shows the
following data:
CE Marking;
The name of the manufacturer;
Article/model/serial number;
Year of manufacture;
Maximum operating pressure (bar - psi);
Nominal speed (r/min);
Torque (Nm);
Air consumption (l/min – CFM)
Figure 3 – Identification plate.
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3 IMPROPER USE AND CONTRAINDICATIONS
IT IS STRICTLY FORBIDDEN TO!!
Allow the tool to be used by untrained personnel and those who have not read the
instruction manual;
Use the tool for different purposes and uses other than those for which it was designed,
i.e. screw/unscrew nuts, bolts and screws;
Use the tool in humid conditions, explosive atmospheres or near flammable surfaces or
gases;
Use the tool without wearing appropriate PPE, such as footwear, gloves, hearing
protectors and goggles;
Touch the socket or square drive during operation;
Use the tool in the presence of children;
Leave the flexible compressed air supply hose inserted.
Point the wrench in the direction of people or animals;
Block or insert objects into the air outlet grille;
Modify and/or tamper with the tool;
Use pneumatic power supplies other than as prescribed;
Place the tool in contact with electrically active objects;
Use the tool when disassembled.
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4 COMMISSIONING
Before it is possible to use the pneumatic gun Art. 0786, put a few drops of lubricating oil
(without resin acid) into the air inlet nozzle (Figure 8 ref. C), remove the air inlet cap, then
screw the nozzle supplied:
3/4" NPT Male Quick-Release Coupling
1. Check the flexible air supply hose. If it is damaged, broken, torn or deformed it must not
be connected to the tool.
2. Check the state of the quick-release couplings (both on the tool and the hose). If signs of
damage are detected, it is broken or excessively corroded, the tool or the flexible hose
cannot be used.
3. The tool must be connected to the air supply source by means of an FRL air conditioning
unit, consisting of a filter, pressure regulator and lubricator, as shown in Figure 4.
The compressed air used must be clean and with the right mix of oil. Adjust the lubricator
in such a way that it applies 3 to 6 drops of oil per minute. Furthermore, the maximum
length of the hose must be a maximum of 6/8 metres.
Figure 4 - Connecting the air supply.
4. Insert the quick coupling of the supply hose into the air inlet nozzle at the bottom of the
handle.
Anti-wear
tube
Tool Tube
Quick release
connector
Nozzle
Pressure
regulator
FilterOiler
Centralised
circuit
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4.1 General warnings
Air Pressure
To ensure proper operation and compliance with safety regulations, the operating pressure of
the compressed air must not exceed 6 bar (90 psi).
Higher pressures may cause damage and excessive wear of the tool.
Information on the working pressure is displayed on the tool's CE plate and in the instructions.
Crushing and Cutting
When connecting the air supply hose to the tool, while attaching the quick coupling, do not
hold down the tool's power lever.
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