8
CPMT
2.4 Specific dangers
The following section lists the residual risks that have been
determined by a risk assessment.
• Heed the safety instructions listed here, and the warnings
in sub-sequent chapters of this manual, to reduce health
hazards and to avoid dangerous situations.
WARNING
Danger of injury caused by moving components
Rotating and/or linearly moving components can cause serious
injury.
Therefore:
• Do not work on, or place, hands ,arms or any other parts of the
body, close to moving components.
2.5 Safety equipment
Integration of an emergency-stop system (for
certain applications)
The device is intended only for installation into an applica-
tion or system. It does not have its own operating control el-
ements, and does not have an independent emergency-stop
function. Therefore, the device must be installed so that it is
part of an emergency shut-off system and can be stopped if
necessary.
The emergency shut-off system must be connected in such
a way that any disruption of the power supply or reactivation
of the power supply after a power disruption, cannot cause a
hazardous situation for persons or objects.
The emergency shut-off system must always be freely ac-
cessible.
NOTE
The processor decides which applications require installation of
an emergency shut-off system.
Integration
of a patient release system (for
certain applications)
The device is intended only for installation into an applica-
tion or system. It does not have its own operating control el-
ements, and does not have an independent patient release
mechanism. In the event of a malfunction, the device cannot
extend or retract.
If required by the application, a separate provision for pa-
tient release must be installed, to allow safe release of the
patient in case of emergency, or equipment failure.
NOTE
The processor decides whether the intended application requires
the installation of an emergency patient release system.
Integration of a safety mechanism to prevent
unintended triggering of the operating device
(for certain applications)
The device does not have its own operating control ele-
ments, and does not have a safety mechanism against unin-
tended triggering of the operating device.
If required by the application, a safety provision must be
provided to prevent unintended triggering of the operating
device.
NOTE
The processor decides whether the intended application requires
the installation of a safety mechanism to prevent unintended
triggering of the operating device.
The following safety mechanisms have been
installed:
• The telescopic pillar CPMT is fitted with a thermoswitch in
the motor, which switches off the telescopic pillar if the
temperature reaches a certain threshold, in order to re-
duce the risk of fire.
• Backup nuts are fitted on the ballscrews to prevent the pil-
lar from collapsing if there is a ballscrew failure.
• End limit switches are installed to provide a safe current
cut-off when the end of stroke position of the device is
reached. In case of failure of the end limit switches, a me-
chanical safety end-stop prevents the device from exceed-
ing its intended stroke.
2.6 Safeguard against
restart
WARNING
Life-threatening situation through unauthorized restart
For work in hazard zones, there is a risk that the power supply
could be turned on without prior authorization. This presents
a potentially life-threatening situation for people in the hazard
zone.
• Read the information contained in this manual, concerning safe-
guarding against any unintentional restart of the power supply.
• Always follow the procedure as described below.
Protect CPMT against an unauthorised restart
Pull the power-line plug of the control unit attached to the
CPMT, out of the power outlet.
