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6-2 WELDING WITH THE FOOT SWITCH
Make sure that the PUK U3 is switched off. Attach the foot switch cable to the socket
“foot switch” on the back of the machine.
Next switch the machine back on, the display will show the following
important safety warning:
“Warning! Protect your eyes! Read the manual! Follow the advice!”
.
Confirm the compliance with these safety instructions, by pressing any button. Following
this, the machine will run a self-test. The machine is now ready for use.
The foot switch can be activated, by pressing and holding it for ca. 1 second. The display
will show the symbol
↓
.
In Standard- / Gap- / HF-Pulse- / Micro-mode:
Attach one of the terminal clamps (i.e. crocodile clip) to a part of the work piece where
the bare metal is exposed.
If the work piece is brought into contact with the electrode, the glare protection system
(shutter) inside the microscope USM will flicker in a clearly visible manner.
Whilst in this operating status, if the foot switch is pressed, the welding process will run
automatically, just as described in chapter 6-1.
By again holding the foot switch pressed for ca. 1 second, (without contacting the work
piece) the footswitch function can be deactivated. The symbol
↓
will disappear from the
display.
WELDING INSTRUCTIONS (Resistance welding)
In this mode, welds are always carried out using the foot switch. For this reason, the foot
switch is automatically activated as soon as the resistance welding mode is selected.
Please note!
Before attaching the connector (minus pole ”-”) to the machine, make sure that the
PUK U3 is resistance welding mode is selected and the foot switch activated. This
will avoid an accidental triggering of the welding process.
Both of the work pieces which are to be joined must be connected at a part of the work
piece where the bare metal is exposed.
Attach one work piece to the plus pole “+” connector, and the other work piece to the
minus pole “-“connector.
To establish a secure connection between the work pieces, It is important to press the
two work pieces together at the point of contact, using medium to strong pressure.
The weld can then be triggered using the foot switch.
Please note!
Before changing to a different mode or switching the machine off:
The terminal clamp with the minus pole “-“ must be unplugged and removed from
the machine.
