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Safety and operating instructions
to be used. However, it is no disadvantage if the
compressed air contains a small quantity of oil
e.g. supplied from a fog lubricator (DIM) or Dosol
system. This does not apply to turbine tools, which
should be kept oil free.
Compressed air connection
• The machine is designed for a working pressure
of 6–7 bar = 600–700 kPa = 87–102 psi.
• Blow out the hose before connecting.
Handling
Operating instructions
See figure in Service instructions
Operating
Run the screwdriver till the preset tightening torque
is reached and the motor stops. Then quickly release
the valve trigger and lift the screwdriver from the
screw.
Setting of tightening torque
A separate air pressure regulator must be installed,
a regulator of type Atlas Copco REG is recommen-
ded. The air pressure is set at a suitable level depend-
ing upon the required tightening torque.
For accurate operation and safety, the tightening
torque must be set correctly in relation to the screw
joint. Check the tightening torque given to the joint
in question.
Atlas Copco's Torque Analyser, ACTA 3000, plus
an appropriately- sized in-line rotary transducer, such
as IRTT, are suitable instruments for checking the
torque, (see our main catalogue).
Maintenance
For maximum performance
At tough working conditions – soft joints and max.
setting – lubrication of the air is recommended.
With extreme dry air the service life of vanes and
machine performance might be reduced. A daily
supply of 0.1 – 0.2 ml oil into the machine inlet will
improve the machine performance. Alternatively
consider an automatic lubricator device, Atlas Copco
oil fog lubricator DIM, or single point lubricator
DOS, which will improve the machine performance.
Rust protection and internal cleaning
Water in the compressed air, dust and wear particles
cause rust and sticking of vanes, valves etc. An air
filter should be installed close to the machine (se 'Air
4
EN
© Atlas Copco Industrial Technique AB - 9836 3743 00
quality'). Before longer standstills, flush with oil
(some drops) into the air inlet, run the machine for
5-10 seconds when absorbing the oil in a cloth.
Service instructions
Overhaul and preventive maintenance is recommen-
ded at regular intervals once per year or after maxim-
um 250.000 tightening depending on which occurs
sooner. More frequent overhaul may be needed, if
used at high torque and long tightening times. If the
machine is not working properly, it should immedi-
ately be taken away for inspection.
The strainer at the air inlet and the exhaust silencer
should be cleaned frequently or replaced in order to
prevent clogging, which decreases the capacity.
At the overhauls, all parts should be cleaned accur-
ately and defective or worn parts (i.e. O-rings, vanes)
should be replaced.
Disassembling /assembling
It is important that the machines threaded connec-
tions are tightened properly; i.e. in accordance with
the specifications on the exploded views.
Cleaning
Clean all parts thoroughly in white spirit or similar
cleaning agent. To prevent clogging and decreased
power, it could be necessary to clean the strainer (if
used) and the exhaust filter between the overhauls.
Inspection
After the cleaning, inspect all parts. Damaged and
worn parts should be replaced.
Lubrication
Lubricate specially gears, valve and clutch with
grease containing molybdenum disulphide (e.g.
Molykote BR2 Plus). Lubricate o-rings and threaded
connections with grease before assembling.
Spare parts
Parts without ordering number are for technical
reasons not delivered separately. The use of other
genuine Atlas Copco replacement parts may result
in decreased tool performance and increased main-
tenance and may, at the company option, invalidate
all warranties.
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