GYS MULTIWELD 250T-C Mode D'emploi page 15

INSTALLATION – PRODUCT OPERATION
Only qualified personnel authorized by the manufacturer should perform the installation of the cutting equipment. During set up, the
operator must ensure that the machine is unplugged. Connecting generators in a series or a parallel circuit is forbidden.
It is recommended to use the welding cables supplied with the unit in order to obtain the optimum product settings.
DESCRIPTION
Thank you for chosing this machine. To get the best use from your machine, please read the following carefully :
The MULTIWELD range are semi-automatic MIG/MAG, MMA and flux cored wire welding stations. They are manual settings ma-
chine, with the help of the table printed on the product. They are recommended for welding steel, stainless steel and aluminium.
POWER SUPPLY
The MULTIWELD 250T-C/320T-C is fitted with a 16A socket type EN 60309-1 which must be connected to a three-phase 400V (50 -
60 Hz) power supply fitted with four wires and one earthed neutral.
The absorbed effective current (I1eff) is displayed on the machine, for optimal use. Check that the power supply and its protection
(fuse and/or circuit breaker) are compatible with the current needed by the machine. In some countries, it may be necessary to
change the plug to allow the use at maximum settings.
While under intensive use (superior to the duty cycle) the thermal protection can activate, in that case, the arc switches off and the
thermal protection indicator switches on.
USE WITH EXTENSION CABLES
All extension cables must have an adequate size and section, relative to the machine's voltage.
Use an extension that complies with national safety regulations.
MULTIWELD 250T-C/320T-C
DEVICE PRESENTATION (FIG. I)
1- Reel support
2- Handles
3- Digital displays
4- Adjustement of welding settings
5- European standard torch connection
6- Polarity reversal cable
CONTROL BOARD MMI (FIG. V)
1- Overheat/Overcurrent indicator
2- Voltage display
3- Current and wire speed display
4- Current indicator
5- Wire speed indicator
6- MMA function indicator
SWITCHING ON
The ON/OFF switch is located at the back of the machine. Turn the switch on the «I» position to start the generator. This switch
must not be turned off (to «O») while welding.
SEMI-AUTOMATIC FOR STEEL/STAINLESS STEEL (MAG MODE)
Set the voltage output and the wire speed according to the thickness of the weld piece, following the instructions/ recommenda-
tions printed on the front of the machine (fig. VI).
The MULTIWELD 250T-C/320T-C can weld Steel wire 0.6/1.2 mm, and Stainless Steel of 0.9/1.2 mm.
The products are fitted to work with 0.8 mm steel wire (roller Ø 0.8/1.0). The contact tube, the groove of the roller and the sleeve
of the torch are all compatible with 0.8 mm wire. Should you wish to weld 0.6 wire, use a torch of maximum 3 m long. The contact
tip must be changed (fig. II-A) as well as the wire feeder's roller that must be replaced by an optional reference (042339) with a
0.6 diameter groove. In this case, the position in such a way to observe 0.6.
For use with Steel, the gas recommendation is argon + CO2. (Ar+CO2). The proportion of CO2 required will vary depending on
the use. For Stainless Steel, use the combination of 2% CO2. If welding using pure CO2 protection gas, you should connect a gas
preheater on the gas bottle (Gys reference 046511 for a 230 V version). You may also use a standard 36 V preheater module that
can be connected to the 36V power supply plug located nearby the soldering wire reel behind the lateral door (fig. I-13). Note that
this 36V DC power supply is also compatible with 36 V AC preheaters. For other specific gas requirements, please contact your gas
distributor. The gas flow in steel is between 8 and 12 liters / minute depending on the environment.
MULTIWELD 250T-C/320T-C
Input voltage
400 V - 3~
7- Earth clamp connector
8- Lifting eyes
9- Gas connector
10- On/off switch
11- Power supply cable
12- External grill
13- Plug 36V DC for gas preheater
7- MIG function indicator
8- 2T/4T function switch button
9- MIG/MMA switch button
10- Welding arc dynamic adjustment
11- Wire speed adjustment (MIG) / current setting adjustment (MMA)
12- Voltage setting adjustment
Wire section of extension cord (<45m)
2.5 mm²
EN
15