ST WELD MINI-160, Инструкция по эксплуатации

Страница: 42 / 45

Warnings:
- Turn the welding cable connectors right down to ensure a perfect electrical contact. Otherwise
the connectors themselves will overheat, resulting in their rapid deterioration and loss of efficiency.
- The welding cables should be as short as possible.
- Do not use metal structures which are not part of the workpiece to substitute the return cable of the
welding current: this could jeopardise safety and result in poor welding.
- Connect the welding machine to a power source. Before connecting the welding machine to a power
source, make sure that the voltage in your electrical outlet matches the voltage indicated on the device label.
- Press the power switch to the "ON" position, at the same time the digital display will show set current. At
the same time, the cooling fan should rotate to confirm that the welding machine is on.
- Adjust the welding current based on the size of the processed material, electrode diameter, and processing
requirements.
- Fasten the electrode to the electrode holder. The device is ready for manual welding.
The relationship from electrode and current
ELECTRODE φ 2.5 φ 3.2 φ 4.0 φ 5.0
CURRENT 70 – 100 A 110 – 160 A 170 – 220 A 230 – 280 A
CAUTIONS & PREVENTIVE ACTIONS
1. Environment
- Welding should be done under an environment relatively dry, and air humidity less than 90%.
- Environment humidity from -10
℃
to 40
℃
.
- Avoid welding under strong sunshine and raining, never make water or rain into the welding machine
- Avoid welding operation in dusty and corrosive air environment.
- Avoid welding in strong air flowing environment.
2. Safety Cautions
- This welding machine fitted with over voltage, over current, over heat protection. The machine will stop work
when voltage, output current, or humidity inside over the standard. But overtimes to use the machine under
non-standard (e.g.: Over voltage) will shorter the life of the machine even to break the machine. So please
make cautions as following:
•
Make sure a good air flow
- As it is a DIY machine, there will be high current during welding, in-fitted fan meets the request of the
cooling the machine. Operator need to make sure the fan works well and keep space less than 0.3 m with
around objects.
•
Prohibit Overload
- Keep the welding current less than the max overload current. Over current will shorter the life of the
machine even to make the machine broken.
•
Prohibit Over voltage
- If voltage over the allowed value, may cause machine to break, operator should have good understanding
and take preventive measures.
•
Every machine fitted with an earth connecting screw marking with a label. Choose a wire more than 4mm
2
to do the earth connection before operation.
•
The machine will stop if over duty cycle during welding, this caused by thermal control and the indicator
on the front panel will light. At this moment, you don't need to turn off the machine, keep the machine
work and fan inside will make the machine cooling. The machine work again after the indicator turn off.
MAINTENANCE
WARNING! All maintenance, repair work must be completely cut off the power, make sure the machine is
unplugged in to the power before opening the case.