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11.2. Working with the machine tool
WARNING
Before carrying out any adjustment or maintenance work or tool changes on the machine tool, it
is essential to pull the mains plug of the machine tool out of the socket located at the rear of the
CNC control unit or to lock the control unit in order to prevent an accidental start-up! Risk of
injuries!
WARNING
All powered or manually operated parts of machine tools are also potential sources of risks of
injury. For that reason, always ensure that there is enough distance between yourself and the
unit and never reach into any moving tools with your hands!
12. Repair work
WARNING Never open the housing of the CU 4! Repairs may only be carried out by qualified
and skilled personnel! The best solution is to send the control unit to our Central Service division
for repairs. The address can be found on the back of this Manual.
13. Disposal
Please do not dispose of the device or of parts thereof as part of your household waste.
The device contains valuable materials which can be recycled. If you have any ques-
tions in this respect, please contact your local disposal company or other relevant mu-
nicipal facilities.
14. Errors in operating the control unit and their correction
• Control unit is not switched on
• Voltage supply is interrupted
• Mains plug of the control unit is not
plugged in correctly.
• Emergency stop switch is locked
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