Pre Spot Operation Program - Car-O-Liner CTR12000 Instruction Manual

Car-O-Liner Group AB

3.2.1 Pre Spot Operation program

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achieved from the test weld(s), and, if necessary, adapt individual welding
parameters to suit the requirements.
In case of faulty welding operation (indicated by QS-RED or QS YEL-
LOW/RED), the LED "Spot error" on the lower control panel lights up too
and the welder is automatically locked until the fault occurred is acknowl-
edged by pressing the "RESET" button Q. The LED "Spot error" goes out
and QS-RED is reset at the next welding operation. A faulty spot must be
repeated by doing a new one to be welded next to the original spot. If the
LED "Fuse" lights up too, the automatic recovery phase for the primary fuse
has been initiated. At the end of this phase, the LED automatically goes out
and a machine restart is released.
In background operation, the program sums up the number of welded spots
and compares it to the preset maximum spot number. The LEDs "Electrode"
and "Tool" light up as soon as this maximum number has been achieved, or
the LED "Electrode" lights up and any further welding operation is blocked
to allow inspection and, if necessary, replacement of the electrode caps.
Such inspection and replacement is only possible while the power source is
OFF and consequently, the error message will be reset only after the power
source has been switched off and on. After this inspection and restart of the
machine, the program asks again for CHECK-ELECTRODE (alternating
light).
This program is used, if more than two sheets are to be joined by welding.
In this case, spot welding is first done on the sheets in the car and outside on
service parts where two sheets need to be welded and joined. This operation
is done to eliminate and burn off contaminating materials between the
sheets, such as primer, paint, glue, as well as to ensure good transition for
the subsequent spot welding operation. After you have selected the PRE-
SPOT OPERATION program, welding settings are done by adjusting mate-
rial thickness as with the standard welding program ELMA-QS.
CTR12000
41644, EN - rev. 2, 2012-09