Safety instructions
Warning
• Make sure you are familiar with the operating in-
structions before you use this machine.
• Before making any adjustments (e.g. setting the
torque, changing bits or sockets) disconnect the
machine from the compressed air line.
• The machine, together with any attachments and
accessories, must never be used for anything other
than the designed purpose.
• Use power sockets only. For safe and economic
use - replace worn sockets.
• Check that the power socket is properly fastened
- replace the square drive retainer when necessary.
• Keep your fingers away from the power socket
during operation to avoid injury. Always work
with protective goggles.
• Avoid unnecessary idling, i.e. running the machine
unloaded (free speed).
• When using a suspension yoke, check that it is in
good condition and correctly fastened.
General information
General
The machine is designed for a working pressure (e)
of 6.3 - 7 bar (max.) = 630 - 700 kPa (90 - 102 psi).
If the compressed air line pressure is higher than
7 bar it is preferable reduced with a pressure regulat-
or of the type Atlas Copco REG.
The Atlas Copco Air Line Test equipment is suit-
able for checking of air pressure and airflow at the
installation point (please see AirLine Accessories in
our main catalogue).
The machine can operate at a lower working
pressure. Maximum torque will be reduced at lower
pressures.
A
If frequent used for tightening or loosening
that need longer time than 3-5 seconds, a
larger wrench should be used. Otherwise the
servicelife of the impact mechanism will be
reduced.
To avoid pressure drop use recommended hosesize,
length, and connections. For more information please
read Atlas Copco Airline Installations, Ordering No.
9833 1191 01.
EC DECLARATION OF CONFORMITY
We, Atlas Copco Tools AB, S-105 23 STOCK-
HOLM SWEDEN declare under our sole responsib-
ility that our product (with type and serial number,
see front page) and in combination with our accessor-
ies, to which this declaration relates is in conformity
with the appropriate standard(s):
EN 792-6
and in accordance with the following directive(s):
2006/42/EC
Stockholm, 29 December 2009
Lennart Remnebäck, General Manager
Signature of issuer
Installation
Air quality
• For optimum performance and maximum machine
life we recommend the use of compressed air with
a maximum dew point of +10°C. We also recom-
mend the installation of an Atlas Copco refrigera-
tion-type air dryer.
• Use a separate air filter of type Atlas Copco FIL.
This filter removes solid particles larger than 15
microns and also removes more than 90 % of li-
quid water. The filter must be installed as close
as possible to the machine/equipment and prior
to any other air preparation unit such as REG or
DIM (please see Air Line Accessories in our main
catalogue). Blow out the hose before connecting.
Models which need air lubrication:
• The compressed air must contain a small quantity
of oil.
We strongly recommend that you install an Atlas
Copco oil-fog lubricator (DIM). This should be
set according to air consumption by the air line
tool according to the following formula:
L
= Air consumption (litre/s).
(May be found in our sales literature).
D
= Number of drops per min (1 drop = 15 mm3)
L* 0.2 = D
this applies to the use of long work cycle air line
tools. A single point lubricator type Atlas Copco
Dosol can also be used for tools with short running
cycles.
Information about Dosol settings may be found
under Air Line Accessories in our main catalogue.
Lubrication-free models:
• In the case of lubrication-free tools it is up to the
customer to decide on the peripheral equipment
to be used. However, it is no disadvantage if the
compressed air contains a small quantity of oil
3
© Atlas Copco Tools - 9836 5320 00
Safety and operating instructions
W2820
