stayer MIG250CM Instructions D'emploi page 29

Both models come with an already installed gas cylinder
support tray. Use the included chain to secure the welding
cylinder to avoid tipping.
GRID CONNECTION
Welding units need an appropriate power supply and
enough capacity to get a highest-performance work. All the
range is certified generator-ready that meet the normative
requirements and correctly work. The minimum power to be
supplied is:
MODEL VOLTAGE MINIMUM
POWER,
KVA
MIG 131 Multi 230,
monofasico
MIG 160 Multi 230,
monofasico
MIG 165 Multi 230,
monofasico
MIG 170 Multi 230,
monofasico
MIG 200 Multi 230,
monofasico
MIG 250 BM 230,
monofasico
MIG 250 BT/CT 3x400 trifasico
MIG 350 BT 3x400 trifasico 14
MIG 500 BT 3x400 trifasico 25
MIG 280 3x400 trifásico 18
DOUBLE PULSE
ILLUSTRATED FUNCTIONS DESCRIPTION
1. Arc welding voltage indicator screen
2.
Arc welding intensity indicator screen
3. DINSE connection – positive borne
4. DINSE connection – negative borne
5.
Thread output speed adjustment
6. Arc welding amperage adjustment
7. General switch of the unit
8. Arc welding Arc Force adjustment
9.
Arc welding voltage adjustment
10. Arc welding inductance adjustment
11. Coated electrode / TIG or MIG selector
12. 2T/4T selector
13. Manual/Synergic selector
14. Wire diameter selector
15. Gas type selector / Metal type
16. Gas purge button
17. On light
18. Thermal overload light / diagnosis
19. Unit welding light
20. Priming thread button
21. Wire torch connector
22. Cooling water input
23. Cooling water output
24. Cooling circuit filling
25. Cooling circuit purge
Environmental conditions limitation
The equipment must be installed under its IP21 classification,
which means that the equipment is protected from a maximum
of a vertical water drops fall and the dangerous parts access
with a finger, against strange solid bodies of 12,5mm ø and
bigger.
RECOMMENDED Amperage and
voltage for
POWER, KVA
magnetothermal
and differential
switches
4 6 2 poli, 230v, 32 Ah
5 7 2 poli, 230v, 32 Ah
5 7.5 2 poli, 230v, 32 Ah
5 7 2 poli, 230v, 32 Ah
6 7 2 poli, 230v, 32 Ah
8 10 2 poli, 230v, 40 Ah
8 10 3 poli, 400v, 40 Ah
16 3 poli, 400v, 25 Ah
27 3 poli, 400v, 40 Ah
20 3 polos, 400v,
40 Ah
The equipment is ready for working on a temperature range
from -15º to 70ºC in consideration of the performance drop
limitation (duty cycle) from room temperatures over 40ºC.
4_OPERATING INSTRUCTIONS
PLACEMENT AND TESTING
The unit is on by pressing the switch 7 in all the models. Before
turning the equipment on, verify its safety and fulfil its labour
risks prevention plan. Then, carry out the following explained
functions according to the machine's type of service.
COATED ELECTRODE WELDING (MMA)
Connect the mass cable to the unit connector 4, and the earth
clamp to the workpiece. Make sure there is a proper electric
contact in a clean and solid surface.
Connect the electrode holder mass cable of the unit to the
connector 4. Plug the electrode to the electrode holder clamp,
securing the directional grooves to fit it.
Select the coated electrode mode on the selector 11 and adjust
its intensity with the setting 6. In the MIG350BT/MIG500BT
models, adjust the Arc Force 8, put it on a minimum-medium
for basic electrode and on a medium-maximum for cellulosic
electrode.
Note: The electrode is mostly connected to the positive
terminal (reverse
circumstances though, it should be connected to
the negative terminal (direct polarity), as it usually
happens with the basic electrode. Refer to the electrode
documentation to be assured.
TIG WELDING
It is necessary for you to obtain a TIG torch (ask your
STAYER supplier) whose gas is controlled by a valve placed
in its handle. Connect the TIG torch to the connector 4 and
the mass to the connector 3 of the equipment (direct polarity).
Press the button 11 to MMA mode. Now, the unit will be
regulated only by the amperes control 6. In with HOT START /
ARC FORCE control models put the control 8 at its minimum.
MIG/MAG WELDING
Connect the earth cable 2 to the unit's connector 4. Connect
the torch to the Euro torch output 21 of the unit. Secure the
connection by screwing the connector's safety ring of the
torch.
When hollow-wire is used (flux core, no gas supply needed),
it is necessary to reverse the polarity from inverse to direct
(positive to the workpiece). Use the exchange connection
borne ready for the effect in all the models.
TOOLS REPLACEMENT
It is explained here the consumables replacement from
the three execution devices: electrode holder for coated
electrodes, continuous wire torches in MIG/MAG processes
and tungsten electrodes torches in TIG processes.
MMA PROCESS (COATED ELECTRODE)
Replace the coated electrode by using the 4 pressor grooves
caved on the electrode holder clamp in order to secure the
position and a better electric contact of the electrode. Make
sure the clamp presses the bare metal of the electrode and
there is no 'fake' contact by reaching the metallic soul coating
of the electrode.
- 29 -
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