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© Lampert Werktechnik GmbH

 

2015

 

14 

 

7.2 TIG-WELDING WITH FOOT SWITCH

 

With the  PUK  U4 switched  off,  connect  the foot  switch  to 
the socket (4) marked with the blue foot switch symbol on 
the  rear  of  the  device.  Switch  the  device  on,  confirm  the 

safety prompt by pressing an arbitrary button and wait for 
the  self-test  to  conclude.  The  device  is  now  ready  for 
operation. 

 

THE FOOT SWITCH CAN BE ACTIVATED BY PRESSING AND HOLDING IT (APPROX. 2 SEC.). A BLUE DOT 
APPEARS IN THE DISPLAY. 

Connect 

metallic 

blank  section  of  the 
workpiece 

with 

the 

contact 

clamp. 

Now 

lightly touch the workpiece with the electrode, so that the 
shielding gas flows out. If the foot switch is operated in this 
mode,  the  welding  process  will  begin  automatically  as 
described in chapter 7.1.  

PRESSING AND HOLDING THE FOOT SWITCH (APPROX. 2 SEC.) (WITHOUT TOUCHING A WORKPIECE) CAUSES 
IT TO BE DEACTIVATED AND THE BLUE DOT ON THE DISPLAY DISAPPEARS. 

 

7.2.1. RESISTANCE WELDING 

THE BLUE CONNECTION CABLE MAY ONLY BE CONNECTED AFTER THE MODE HAS BEEN ACTIVATED. 
AFTER WELDING IS COMPLETE, IT IS VITAL THAT THIS CABLE IS REMOVED AGAIN, BEFORE SWITCHING 
TO ANOTHER MODE, IN ORDER TO AVOID FAULTY WELDS! 

Connect both of the workpieces which are to be fixed at 
an area of bare metal with a connection terminal, one to 
the blue one and the other to the black. When the two 
parts are touching, the welding process can be triggered, 
using the foot switch. The hand piece is not used during 
this process. 

The required welding power is determined by the 
strength of the connection desired as well as the 
workpiece geometry. The welding time setting is of 
secondary importance in this mode, and can only be 
varied to a very limited extent.  

BEFORE SWITCHING TO ANOTHER USER LEVEL, PLEASE REMOVE THE BLUE CONNECTION CABLE 
FROM PUK U4! 

NOTE: DURING FIXATION WELDING, THE FOOT SWITCH IS ALWAYS ACTIVE, AND CANNOT BE DEACTIVATED! 

 
 

7.3 BASICS AND TIPS 

IMPORTANT! 

  Always work with a well sharpened electrode (see point 

7-4 for information about sharpening the electrodes).  

  Ensure extremely good contact between the workpiece 

and the contact clamp, i.e. make contact between the 
workpiece and the connection cable terminal at a point 
which is metallically blank. 

  Never weld "free hand", i.e. use the hand rests of the 

microscope USM. Shaking hands can cause the 
configured parameters to be falsified. 

  Apply only light force to the electrode tip. 

  Weld with the correct gas flow of 2 litres/minute and 

check this regularly.  

  With a little experience you will notice that the angle 

with which you touch the workpiece with tip of the 
electrode affects the "direction of flow" of the welding 
point.  

 

The electrode can easily be clamped in somewhat 
longer for welding recessed areas.

 

  In many cases it is helpful to work with welding wire as 

a welding supplement, but never with solder. 

 

Summary of Contents for PUK U4

Page 1: ...Operating Manual PUK U4...

Page 2: ...OPERATION THE GENERAL SAFETY REQUIREMENTS AND PERSONAL BODY PROTECTION CHAPTERS MUST BE READ BEFORE COMMISSIONING Please keep these operating instructions safe The equipment produced by Lampert Werkt...

Page 3: ...election of the TIG welding parameters Pg 11 6 2 Help function Pg 12 6 3 Programming Pg 12 6 4 Loading saved WIG welding programs Pg 13 6 5 Resistance welding mode Pg 13 7 WELDING INSTRUCTIONS 7 1 Int...

Page 4: ...the mains and welding currents can be a source of danger Always remove the mains plug when exchanging the LED unit Only use original replacement LED units from Lampert The device must be isolated from...

Page 5: ...in protection class 10 In addition to light and thermal radiation which can cause dazzling and burning the electric arc also emits UV radiation With insufficient protection this invisible ultraviolet...

Page 6: ...ET FOR LED MICROSCOPE ILLUMINATION 6 TYPE PLATE 7 SERIAL NUMBER 8 PROTECTIVE GAS CONNECTION ARGON GAS for 6 0 mm diameter pressure hose 9 APPROVED MAINS VOLTAGE FOR THIS DEVICE 10 USB SOCKET FOR SERVI...

Page 7: ...up hand tight do not use a tool to tighten The correct length for the electrode can easily be checked and corrected if necessary by means of the milled marks on the handpiece clamping arm Fig 4 Now re...

Page 8: ...interocular distance should be individually set for each user FOCUSING Mount a welding handpiece with clamped electrode into the supporting arm Rotate the focusing knob 22 to a medium focus range Adj...

Page 9: ...as resistance welding devices 29 CONNECTION SOCKET FOR HAND PIECE 30 SOCKET 6 mm socket for connecting the blue contact terminal for resistance welding as well as resistance welding devices TOUCHSCREE...

Page 10: ...d custom settings c Resistance welding mode d Settings In user level TIG welding it is possible to use the arrow keys to scroll back and forth between the various pages e g between the preconfigured p...

Page 11: ...GS The Settings user level can be used to modify basic settings and launch various test functions Gas Test Pressing the corresponding button causes the gas valve to be opened This function is importan...

Page 12: ...welding time Welding times of no more than 4ms are recommended here With many alloys and other highly conductive metals a longer welding time can be advantageous in order to avoid hot cracks starting...

Page 13: ...e Use identical alloy wire with a diameter of 0 3 to 0 4 mm Particularly low energy fusing of thin welding wires of a max 0 25 mm PUSHING TOUCHING THE RESPECTIVE BUTTON FOR AN EXTENDED PERIOD BRINGS U...

Page 14: ...FUNCTION OF THE EYE PROTECTION FILTER AS DESCRIBED IN CHAPTER 5 5 FILTER TEST IF THE EYE PROTECTION FILTER SHUTTER FAILS TO SWITCH OVER FROM LIGHT TO DARK THEN IT MUST BE IMMEDIATELY EXCHANGED BY AUT...

Page 15: ...e black When the two parts are touching the welding process can be triggered using the foot switch The hand piece is not used during this process The required welding power is determined by the streng...

Page 16: ...HAT ARE NOT DESCRIBED IN THESE OPERATING INSTRUCTIONS ARE NECESSARY THEN CONTACT YOUR DEALER WARNING IF FUSES REQUIRE EXCHANGING THEN THEY MUST BE REPLACED WITH FUSES OF THE SAME TYPES AND VALUES THE...

Page 17: ...ly in dry rooms Operating temperature Lamp LED unit Protection class Insulation class Protection type Weight 5 C to 40 C 2 5W 800mA III B IP 20 3 6 Kg 9 3 OPTICAL DATA MICROSCOPE Lens Ocular Working d...

Page 18: ...load Tungsten inert gas welding Earthing earth Nominal welding current Power consumption under max load Power consumption under nominal load Cyclic duration factor Single phase transformer Keep away f...

Page 19: ...firmly 7 Oxidation and rusting Excessive gas pressure Reduce flow rate approx 2 l min is recommended 8 Severe oxidation of the welding points Incorrect shielding gas Use inert shielding gas Argon 4 6...

Page 20: ...ocusing knob REPAIR If the stereo microscope requires repair or adjustment by qualified personnel we recommend sending it back to the dealer authorized customer service in its original packaging Inclu...

Page 21: ...e disposal of used electrical and electronic equipment discarded electrical devices must be separated and collected and sent for recovery in an environmentally friendly manner 13 EC DECLARATION OF CON...

Page 22: ...Born in Germany Lampert Werktechnik GmbH Ettlebener Stra e 27 D 97440 Werneck Tel 49 9722 9459 0 mail lampert info www lampert info Rev 4 0...

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