Illustrated Description Of Functions; Limitations To Environmental Conditions; Operating Instructions; Positioning And Testing - STAYER WELDING MIG/MAG Série Instructions D'emploi

MIG 250 BM 230, single-phase
MIG 250 BT 3x400 triphase
MIG 350 BT 3x400 triphase
MIG 500 BT 3x400 triphase

3.4. Illustrated description of functions

1. display showing welding arc voltage
2. Screen indicator intensity of the welding arc
3. Connecting DINSE, positive terminal.
4. Connection DINSE, negative terminal.
5. Adjust output speed of the thread
6. Set amperage arc welding
7. Main switch machine
8. Set the Arc Force Arc Welding
9. Adjust the welding arc voltage
10. Setting the inductance of the welding arc
11. I Selector MIG or coated electrode / TIG
12. Selector 2T / 4T
13. Manual Selector / Synergistic
14. Selector wire diameter
15. Gas type selector
16. Button Purge Gas
17. Light machine on
18. Light thermal overload
19. Light welding machine
20. Push priming thread
21. Torch Connector thread
22. Cooling water inlet
23. Cooling water outlet
24. Filling the cooling circuit
25. Drain the cooling circuit

3.5. Limitations to environmental conditions

Equipment shall be installed respecting their IP21 class; this
means that the equipment is protected at the most against
vertical impact of water drops and access to dangerous parts
with one finger against solid foreign bodies of 12.5 mm ø or
larger.
The equipment is prepared for working within a temperature
range from -15ºC to 70ºC, taking into account the limitation of a
decrease in performance (duty cycle) as of ambient temperatures
above 40OC.

4. OPERATING INSTRUCTIONS

4.1 Positioning and testing

Any model of this equipment is turned on by operating switch No.
7. Before turning equipment on, check safety and comply with
your risk prevention in the workplace, and carry out the functions
explained below as a function of the machine's service time.

4.1.1 Shielded Metal Arc Welding (MMA)

Connect ground cable to machine connector 4. And connect the
ground clamp to the workpiece. Make sure that there is a good
electric contact on a solid and clean surface.
Connect cables of the electrode carrier clamp of the machine
4. Connect the electrode to the electrode carrier clamp making
sure that it fits into the directional slots.
Select the electrode mode selector 11 and adjust the intensity
adjustment 6. In MIG350BT / MIG500BT adjust Arc Force 8
min-put means basic electrode and medium-Max for cellulosic
models
8 10
2 poles, 230v, 40 Ah
8 10
3 poles, 400v, 40 Ah
14 16
3 poles, 400v, 25 Ah
25 27
3 poles, 400v, 40 Ah
ENGLISH
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Note: the electrode is almost always connected to the
positive terminal (reverse polarity). But under certain
circumstances it is to be connected the negative one (direct
polarity) as it is usually the case of the base electrode. Refer
to the electrode documentation to be sure.

4.1.2 TIG Welding

It is necessary that you obtain a TIG torch (5ref. 4120.81) the
gas of which is governed at the handle of the torch. Connect
the TIG torch to connector 4 and ground to connector 3 of the
machine (direct polarity).

4.1.3 MIG/MAG Welding

Connect ground cable 2 to machine connector 4 Connect torch
to the Eurotorch outlet 21 of the machine. Secure the connection
by screwing the safety ring of the torch connector.
When hollow fiber (flux core, no need gas supply) is used it is
necessary to reverse the polarity reverse to work directly (positive
to the workpiece). Use the terminals exchange connection
prepared for this purpose in all models.

4.2. Tool replacement

Replacement of consumables of the three execution devices:
electrode carrier for shielded electrodes, continuous wire torches
in MIG/MAG processes and tungsten-electrode torches in TIG
processes.

4.2.1 MMA process (shielded electrode)

Replace the shielded electrode utilizing the 4 pressure channels
practiced in the electrode carrier clamp to secure position and
best electric contact. Make sure that the clamp presses onto the
electrode's bare metal and that there is no false contact cutting
into the wire's coating.

4.2.2 TIG process

Here, the wear and tear element is the tungsten electrode itself of
the TIG torch. Despite its good performance, it is recommended
to avoid thorium-doped electrodes (red strip) for reasons of
absolute safety in respect of pollution as explained below.
The electrode carrier clamps themselves and the gas conducting
nozzles suffer from wear and tear in the vicinity of the electrode.
The electrode carrier clamp will always have the same diameter
as the electrode. The nozzle will have the diameter (as indicated
by its number) indicated for the kind of work and gas consumption.
The elements are of easy manual disassembly by simple threads
and knurlings.
Do neither use nor sharpen thorium-doped tungsten
electrodes because of the risk derived from the
moderate radioactive activity. You may recognize
the presence and concentration if thorium dioxide by the
indicative strip on the electrode according to EN ISO
68848:2004 (colors: yellow, red, purple and orange). Avoid
these electrodes and use substitute products without
contents as for example electrodes with lanthanum and
cerium derivatives (strips: black, grey, blue, gold) which do
not have radioactive activity.
Prepare the electrode by sharpening the tip with the emery
stone in such a way that a cone with a height of approximately
2 times the electrode's diameter. For a better arc and current
handling capacity, the correct attack of the tip on the stone must
be longitudinal and the tip must be slightly flat.
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