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Safety Precautions and Technical Details
DAA007EN - 11.05.2021
SAFETY INSTRUCTIONS FOR DIFFERENT LIFE PHASES
6.5 Maintenance, service, and repair
Maintenance and repair work is to be performed only by authorized and trained
personnel.
This applies particularly to work on motors (spindle motors) or other electrical as-
semblies. The instructions in the respective manufacturer documentation must be
followed for such work.
We recommend the use of original spare parts and accessories. For damages
caused by the use of parts from third-party providers, liability and warranty are
excluded. The use of such products may change the structural characteristics of the
machine and negatively affect the active or passive safety.
Prior to working on the machine, it must be allowed to cool down, as hot parts may
be located under covers.
In general, maintenance and repair is to be carried out with the machine turned off.
The main switch must be locked out.
Electrical components may carry electric energy even after the machine has been
switched off. These components are identified with an information label and must
not be touched before the specified discharging time has elapsed.
In a few cases, maintenance and repair need to be performed with the machine
turned on (e.g., replacement of backup batteries). These activities may only be
carried out by qualified personnel, and particular care must be taken. The control
system manufacturer’s instructions must be observed.
Attach a warning sign on the operating panel to prevent any actuation of switches or
keys. Set up barriers to prevent access or interference by unauthorized persons.
Care must be taken when performing any maintenance and repair activities on the
machine. Fasteners must be loosened carefully and parts must be secured against
falling down. When elastic items (springs) are removed/replaced, appropriate devic-
es must be used. Any non-horizontal axes that pose a risk of falling down must be
moved to their end positions or secured against falling down.
Pedal switches must be put aside to avoid inadvertent actuation.
For removing machine parts, suitable lifting gears must be used. Removed machine
parts must be placed in a safe position and secured against falling over.
It may be necessary to remove or disable safety devices in order to carry out
repairs. Any removed safety devices must be reinstalled immediately after finishing
the repair.
When the control cabinet is open or the machine covers are open or removed, no
cellular or cordless phones may be used within a 2m radius.
For work on the hydraulic system, it must be depressurized by opening the accumu-
lator drain valve(s).
Damaged hydraulic hose lines must be replaced immediately. Typical types of dam-
age include chafing, kinks, cracks, deformations, or visible leaks.
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