Lampert Werktechnik GmbH
Lampert Werktechnik GmbH
OPERATING MANUAL PUK 5.1
EN
6.13 Foot switch (custom accessories)
With the welding device switched off, connect the foot switch plug to the socket marked with the blue foot
switch symbol on the rear of the device. The device is then switched on. Pressing the multifunctional controller
or touching the display confirms the safety information and the device is ready for operation.
The foot switch can be activated by pressing and holding it. The message "Foot switch activated” is shown on
the display and the blue foot switch symbol at the top right of the display.
A bare metallic point of the workpiece is connected with a contact clamp. The workpiece and electrode are
then guided together. The contact is indicated by a periodically alternating opening and closing of the eye
protection system. The foot switch is now ready to perform the welding process.
The foot switch can be deactivated again by pressing and holding it (without workpiece contact). The blue foot
switch symbol in the display goes out.
6.14 Help function
The buttons at the bottom edge of the display are supported in all user levels with a help function. Pressing
and holding the button causes the info window to appear for the respective button, which displays explanatory
information for the button function. Pressing on the display again results in the program returning to the active
user level.
7. Basic information about the effects of power and pulse duration
7.1 Power
The size and intensity of the welding points are controlled by the power, i.e. the higher the power the larger
the welding point. With very thin materials an excessive power level can also quickly result in damage.
It makes sense for “PUK beginners” to experiment in order to find the optimum power level, starting with
a power of 20% or with very fine welding, even lower. Power settings between 35% and 50% are considered
medium welding powers. With silver alloys in particular it is generally not practical to increase the power level
above 50% as the metal will otherwise very quickly start to “spatter” instead of welding. Other precious
metals can be welded with higher power levels, just as with stainless steel. A power level above 70% is only
practical in exceptional circumstances. There is a danger of inhomogeneous welds and only experienced users
should move outside this range.
7.2 Pulse duration
The pulse duration determines for how many milliseconds the power is applied, i.e. a longer pulse duration
results in a longer and deeper application of the energy to the workpiece and thus simultaneously a greater
development of heat. With very thin materials or wires, it is advisable to select a shorter pulse duration.
In particular when welding close to precious stones, pearls or other heat-sensitive materials, welding times
of no more than 4 ms are recommended. With many silver alloys or other highly conductive metals a longer
welding time, starting at 10 ms, can also be advantageous in order to avoid heat cracks.
22