12
OPERATING CYCLE AND OVERHEATING
The operating cycle is the percentage of 10 minutes during which the unit can weld at the required power without
overheating. If machine becomes overheated, the welding power will stop and the alarm indicator will light up to show
that the equipment has been overheated.
Don’t stop the machine to allow the
fan keeps turning to decrease the internal
temperature and when a safe temperature has been reached the equipment will automatically reset. However, it is
recommended to wait at least 5 minutes before starting to work normally again. To avoid overheating, reduce the
adjusted welding power or the length of the welds.
ATTENTION
If the
nominal operating cycle of the machine is exceeded and the equipment is forced to work for too long without
being allowed to cool properly, this could cause significant damage not covered by the guarantee.
TRANSPORT AND INSTALLATION OF THE WELDING MACHINE
Impacts should be avoided during transport of the machine. The transport position must be as indicated on the
packaging. The machine must be located in a dry, well-ventilated area and away from the welding station, to prevent
metal dust entering the welding machine. The machine must be installed on a horizontal surface with a maximum
gradient of 10°. Place the machine away from water outlets. The machine must be connected to an electrical box,
which should consist of a circuit breaker and an automatic switch. The circuit breaker protects people from direct or
indirect contact with electrical parts. The automatic switch must be chosen according to the equipment nameplate. A
switch with a current/time ratio of the slow type (D curve) is recommended to prevent false triggering.
COMMISSIONING
1 - Connect the ground clamp as close as possible to the work piece and connect the other side of the cable to the
machine (in the desired position depending on the polarity). The contact surface with the work piece should be as large
as possible. Make sure the surface is completely clean and free of paint and rust.
The following table shows the cable section, recommended by Solter Soldadura, according to amperage and operating
cycle for lengths of less than 25m. These data are for reference and may NOT suit all applications. If the cable
overheats, use a larger cable section.
Welding current (A)
100
150
200
250
300
350
400
Section (mm
2
) for X<60 %
16
25
25
35
50
50
70
Section (mm
2
) for X>60 %
16
25
35
50
70
70
90
2 - Connect the electrode clamp to the machine in the desired position (according to the polarity).
3 - Connect the welding machine to an earthed socket (the plug must have an earth connection). Ensure that the
voltage is within the range of /-10V. Outside this voltage range, the device may malfunction.
THERMAL PROTECTION DEVICE
The machine features all necessary protective measures to ensure proper operation. If machine becomes overheated,
the welding power will stop and the alarm indicator will light
up to show that the equipment has been overheated. Don’t
stop the machine to allow the fan keeps turning to decrease the internal temperature and when a safe temperature has
been reached the equipment will automatically reset.
WELDING PROCEDURE USING COATED ELECTRODES
• Electric arc welding using coated electrodes is a procedure through which a joint is made between two metallic parts,
making use of the heat generated by an electric arc which is produced between the melting electrode and the material
to be soldered.
• Welding equipment may be DC or AC; the former can weld any type of electrode while the latter can only weld
electrodes made for AC.