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4
Commissioning
1070 080 058-101 (2001.04) GB
DANGEROUS ELECTRICAL VOLTAGE
Danger of life in case of contact with live parts!
Upon commissioning, the thyristor power unit is energized!
CAUTION
Cooling!
Please make sure that there is sufficient cooling capacity.
In the case of water cooled thyristor power units, ensure that the
cooling water inlet connection is turned on and check the water tem-
perature.
Any and all warranty excluded in case of non-compliance.
D Check the mechanical system of the welding outfit.
D Check the electrical installation.
D Check the auxiliary equipment:
D pneumatic system
D cooling water or cooling system.
D Check the operability of the emergency-stop devices.
D Cutting in the thyristor power unit:
D Apply mains voltage.
D The thyristor power unit starts working. The green "Power" LED on the
front panel of the weld timer (CPU) lights up.
D Check power supply and 24 V DC supply.
D Check peripheral I/O signals:
D sensor signals,
D communication with other weld timers.
D Check weld programs (for programmed current values and weld times).
D Cutting off the thyristor power unit:
D Verify the safe isolation from supply.
Commissioning
4-1
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