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ENGLISH - Instructions
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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 exposure to vibrations that may cause circulatory
disturbances in your fingers.
Never work without protective goggles.
Avoid unnecessary idling.
When using a suspension yoke, check that it is in good condition
and correctly fastened.
General
The machine is designed for a working pressure (e) of max 7 bar =
700 kPa (102 psi).
Note
The machine can operate at working pressures below 6.3
bar. If this is the case, the preset torque must be kept low
enough to ensure clutch release.
Make sure that the hose size is correct (fig. 19).
Compressed air connection and hose size – see the spare parts list.
Make sure that the hose size is correct.
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. 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/TC 118, quality class 2.4.3. or 3.4.4. is
recommended.
Setting of tightening torque (fig. 8 – 11)
The torque is adjusted by setting the cross-slotted screw
(Ref.No.141). It is recommended to start at min. torque setting.
Increase the torque by turning the screw clockwise (+).
Decrease by turning the screw counter clockwise (–).
Note
The adjusting screw (the slotted screw, Ref.No.141) and
the trim valve (Ref.No. 61) are the only screws that initially
should be adjusted. The hexagon screw (Ref.No.162) is
for calibration purposes and is normally to be set only
after corrective service, fig. No. 13.
Always check the setting on your actual joint .
Min. torque setting
Set the adjusting screw at min level. At hard joints and min.
torque setting, reduced free speed by the Trim-valve will improve
the accuracy. Min. recommended number of pulses per tightening
is 3.
Max. torque setting
Start at a low torque level. Gradually increase the setting.
Continue as far as the shut off function is distinct. Max.
recommended tightening time is 3 seconds.
Test method – Static or Dynamic (fig. 17, 18)
A static torque measurement is recommended for the ErgoPulse
machines.
If a dynamic torque measurement using an electronic inline torque
transducer is used, always verify your measurement method by a
static check with a torque wrench (electronic).
For more information, read Atlas Coco "Pocket Guide to Pulse Tools".
Ordering No. 9833 1225 01.
4
For maximum performance
At tough working conditions – soft joints and max. setting – lubrication
of the air is recommended.
On extreme dry air operation 0.1 – 0.2 ml of oil in the machine inlet
when suitable will improve the machine operation.
At hard joints and low tightening torque settings, reduced free speed
by the Trim-valve will improve the accuracy.
Always check the tightening torque on your actual joint after an
adjusting.
!
Refill the pulse-unit with oil (fig. 12, op 5-10)
For optimum machine performance the pulse unit must be
correctly filled with oil. Due to a possible microleagage 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.
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 for a period with too little oil may
damage the pulse unit.
After the refill – Check the tightening torque, fig. No. 8.
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.
Service instructions (fig. 15 -16)
3
). Air
The machine is normally used as a heavy-duty machine. It should,
therefore, be dismantled, overhauled and cleaned after 100 000
(ambitious service level) to 250 000 (maximum) tightenings. If it is not
running properly, it should be taken out of service 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 accurately and defective
or worn parts (i.e. O-rings, vanes) should be replaced.
Note
Selected Service Kits (Optional)
The spare parts included in the service kits cover a normal overhaul
of your machine. Always have them available in your workshop for a
fast and economical repair.
Reporting, RE – signal (fig. 21)
This RE-machine supplies an air pressure signal which can be
connected to a control unit to count the number of correct tightenings
and to detect premature shut offs, rehits and other improper
tightenings.
Atlas Copco Tools - No. 9836 1621 00
All o-rings should be greased before assembling;
specially important are the o-rings in the pulse unit
EP 14PTS-HR20
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