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English - Instructions
!
Warning
Make sure you are familiar with the operating instructions before
you use this machine.
Before making any adjustments (e.g. setting the torque,
changing bits) 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.
Never work without protective goggles.
Avoid unnecessary idling.
When using a suspension yoke, check that it is in good condition
and correctly fastened.
!
Warning - AT versions
Regularly check the correct operation of the AutoTrim valve!
Non-switching (from restricted to open operation) will cause
longer tightening time with risk of over tightening of the joint.
Premature switching to open position (i.e. when tool is running
free) might cause erratic shut-off because too few pulses.
See page; 38 - Technical Instructions - Auto Trim.
Dismantling and assembly precautions
The rotor blades (vanes) in the tool have a PTFE content. The normal
Health and Safety recommendations concerning PTFE must be
observed when handling these rotor blades. Particles from wear of
blades might be found in the machine housing or on the blades.
These particles must not get in contact with open fire. Wash your
hands before smoking as PTFE-particles heated by the glow can
produce fumes, which may give rise to allergic reaction.
Air quality
– For optimum performance and maximum machine life we
recommend use of compressed air with a dew point between +2°C
and +10°C. Installation of an Atlas Copco refrigeration-type air
dryer is recommended.
– Use a separate air filter of type Atlas Copco FIL installed as close
as possible to the machine and prior to any other air preparation
unit like REG or DIM (please see Air Line Accessories in our main
catalogue). Blow out the hose before connecting.
– There is no disadvantage for the operation of the machine if the
compressed air contains a small quantity of oil (1–5 mg/m
quality according to ISO 8573-1, quality class 2.4.3. or 3.4.4. is
recommended.
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 regulator of the type Atlas Copco REG.
Note
The machine can operate at a lower working pressure
(min. 4 bar). If this is the case, the pre-set torque must be
kept low enough to ensure shut off.
To avoid pressure drop use recommended hosesize, length, and
connections (fig. 27). For more information please read Atlas Copco
Airline Installations, Ordering No. 9833 1191 01.
The Atlas Copco Air Line Test equipment is suitable for checking of
air pressure and airflow at the installation point (please see AirLine
Accessories in our main catalogue).
4
Setting of tightening torque (fig. 12-13)
Note
Start at a low torque adjustment and gradually increase the setting
until you reach the desired torque level.
Use of a machine over recommended maximum torque might result in
improper function and faster wear.
Always check the setting on your actual joint.
AT-versions
This machine is equipped with an AutoTrim valve, which gives the
machine optimal performance on mixed hard and soft joints.
The AutoTrim valve is factory preset to suit a majory of
applications. It gives a reduced speed during rundown. After 1-2
pulses it shifts automatically to full speed/power for the rest of the
tightening.
RE-versions
At hard joints and low tightening torque settings, reduced free speed
by the Trim-valve will improve the accuracy.
Test method – Static or Dynamic (fig. 25, 26)
A static torque measurement is recommended for the ErgoPulse
machines.
If dynamic torque measurement with an electronic inline torque
transducer is used, always verify your measurement result by a static
check with a torque wrench (electronic).
For more information, read Atlas Copco "Pocket Guide to Pulse
Tools". Ordering No. 9833 1225 01.
For maximum performance
At tough working conditions – soft joints and max. setting – lubrication
of the air is recommended.
With extreme dry air service life of vanes and tool power maybe
reduced. A daily supply of oil (0.1 – 0.2 ml).
into the machine inlet or consider an automatic lubricator device of
the type Atlas Copco oil fog lubricator DIM
or single point lubricator DOS, which will improve the machine
performance.
!
For optimum machine performance the pulse unit must be
correctly filled with oil. Due to a possible microleakage of oil from
the pulse unit, it could be necessary to refill the unit between the
regular overhaul intervals. The frequency of this procedure
depends on the type of application, number of cycles, tightening
time etc. An accurate refill of the pulse unit gives long service
intervals.
3
). Air
Too much oil in the pulse unit implies a low pulse frequency and
slow tightenings.
Too little oil in the pulse unit implies a high pulse frequency and
there will be a risk of a decreasing tightening torque. In particular
at the first tightenings after a break the machine might race.
Use Hydraulic Oil : 22 cST / 40 °C (ISO VG22).
Running the machine with too little oil may damage the pulse unit.
After the refill – Check the tightening torque, fig. 12, 14, 25, 26.
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 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.
Atlas Copco Tools - No. 9836 1682 03
The adjusting screw (the slotted screw) is the only screw
that initially should be adjusted. The hexagon screw is for
calibration purposes and is normally to be set only after
corrective service, fig. 21.
Refill the pulse-unit with oil (Fig. 20)
EP5/6PTS HRX
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