Mweld MW120mini-PRO, Instruction Manual, Page: 23 / 24

5. PRECAUTIONS
6. MAINTENANCE
Workspace
1. Welding equipment free of dust, corrosive gas, non-fl ammable materials,
up to 90% humidity for use!
2. Avoid welding outdoors unless protected from direct sunlight, rain, snow, work area
temperature must be between -10 °C and +40°C.
3. Wall to position the device at least 30 inches away.
4. Well-ventilated area to perform welding.
Safety requirements
Welding provides protection against overvoltage / overcurrent / overheating.
If any of the above events occurs, the machine stops automatically. However, over-stress
damage to the machine , keep the following guidelines :
1. Ventilation . When welding a strong current going through the machine , so the
machine is not enough natural ventilation for cooling . The need to ensure adequate
cooling, so the distance between the plane and any object around it at least 30 cm .
Good ventilation is important to normal function and service life of the machine.
2. Continuously , the welding current does not exceed the maximum allowable value.
Current overload may shorten its life or damage to the machine .
3. Surge banned ! Observance of tension range follow the main parameter table .
Welding machine automatically compensates for voltage , allowing the voltage within
permissible limits of law. If input voltages exceed the specifi ed value ,
damaged parts of the machine .
4. The machine must be grounded! If you are operating in a standard, grounded
AC pipeline in the event of grounding is provided automatically . If you have a generator
or foreign , unfamiliar , non-grounded power supply using the machine , the machine is
required for grounding connection point earth to protect against electric shock .
5. Suddenly stopping may be during welding when an overload occurs or the machine
overheats. In this case, do not restart the computer , do not try to work with it right away,
but do not turn off the power switch , so you can leave in accordance with the
built-in fan to cool the welding machines .
WARNING!
If the welding equipment is used with the welding parameters above 180 amperes,
the standard 230V electrical socket and plug for 16 amp circuit breaker is not sufficient
for the required current consumption, it is necessary to use the welding equipment
with 20A, 25A or even to the 32A industrial fuses! In this case, both the plug and the plug
socket fork have to be replaced to 32A single phase fuse socket in compliance with all
applicable rules. This work may only be carried out by specialists!
1. Remove power unit before maintenance or repair!
2. Ensure that proper grounding!
3. Make sure that the internal gas and electricity connections are perfect and tighten,
adjust if necessary, if there is oxidation, remove it with sandpaper and then reconnect
the cable.
4. Hands, hair, loose clothing should be kept away under electric parts, such as wires, fan.
5. Regularly dust from the machine clean, dry compressed air, a lot of smoke and
polluted air to clean the machine every day!
6. The gas pressure is correct not to damage components of the machine.
7. If water would be, for example. rain, dry it in the machine and check the
insulation properly! Only if everything is all right, go after the welding!
8 When not in use for a long time, in the original packaging in a dry place.