Atlas Copco LUM 25 PR05-P Original-Produktanweisungen Seite 8

Safety Information
an individual user are unique and depend upon the
way the user works, the workpiece and the work-
station design, as well as upon the exposure time
and the physical condition of the user.
We, Atlas Copco Industrial Technique AB, can-
not be held liable for the consequences of using the
declared values, instead of values reflecting the ac-
tual exposure, in an individual risk assessment in a
work place situation over which we have no con-
trol.
Service instructions
Service Instructions
Tightening of threaded connections
The tightening torques indicated in the exploded
views list are established to achieve the correct
clamping force and preventing the parts from com-
ing loose. At service these parts must be able to
open up without being destroyed. In special cir-
cumstances (depending on application and usage)
the parts may however come loose after some time
of operation. In such cases the torque could be in-
creased 10-20% and if necessary some type of low
or medium threadlocking fluid could also be ap-
plied.
Example
Operating Instructions
Air pressure monitoring, RE-signal S1
Reporting pneumatic assembly tools provide a
pneumatic signal that indicates which part of the
tightening cycle the tool has reached, by means of
variations in air pressure.
In the RE-Controller box timers are triggered when
certain pressure levels are reached.
8 © Atlas Copco Industrial Technique AB - 9836 0990 04
Pressure level 1 (P1) starts a timer that checks that
the tightening cycle is not too short.
Pressure level 2 (P2) starts a timer that checks the
time taken from when the clutch has been released
to when the operator releases the trigger to ensure
that it is not too short.
The controller measures the differential pressure
over the motor.
It should be noted that the system does not mea-
sure torque! Regular check of installed torque/
torque output of the tool must be done separately.
The RE-Controller checks the air-line pressure.
One of the most common problems in air-line sys-
tems is pressure variations. If the pressure drops
too much the tool might stall and/or the torque will
not be correct. The RE-Controller will give a sig-
nal if the pressure drops too much.
The RE-Controller alerts the operator when it de-
tects:
• Missed fasteners
• Premature tool shut-off
• Stripped threads
• Cross-threading
• Rehits
• Drop in air supply
The air pressure inside the tool is measured
through a small hose (see Optional accessories -
RE-Signal kit) and converted into a digital signal.
This signal is processed in the RE-Controller. The
RE-Controller gives instant visual and audio feed-
back to the operator on whether the tightening was
OK or not OK.
For further information, please see leaflet 9833
1358 01.
LUM25 PR05/07/10-P