Maintenance; Fault And Repair - Yeswelder MIG PRO-200 User Manual

exceeded voltage, the machine will be damaged, so please kindly note as below:
(1). Ensure GoodAiriness.
During the working, the machine will generate high temperature and it needs help from fan to cool the
machine. So users please make sure the ventilation inlet is not stuck or covered. Meanwhile, keep the objects
around the machine in a distance of no less than 0.3m. Keeping airiness helps to lower the temperature more
quickly and ensures a longer service life of the machine.
(2). Current Overloading Prohibited
Close attention should be paid to the permissible loading current(the available duty cycle) to ensure the
welding current being under maximum permissible current. Current overloading shortens service life of a
machine greatly, or even damages the machine.
(3). Voltage Overloading Prohibited
For the power supply voltage, please refer to the "Main Parameter Table". Under normal circumstances, the
auto-compensation circuit in the machine will help to keep the welding current within permissible range.
Voltage overload damages the machine, so preventive measures are needed.
(4). Earth cable connects to the ground. There is a mark near the earth screw on the back panel. Before using
the machine, please choose a wire (cross sectional area above 6 mm ) to connect the earth screw to ground
2
to avoid electricity leakage accident and release static electricity.
(5). No overload of the standard rated duty cycle. When it overloads the standard, the machine will stop
working due to overheat inside of machine. After stopping and resting for some time, the machine can be
started to work again.

8.Maintenance

1). Below operation should be done by a professional operator with electrical engineering & safe knowledge
and ability qualify certificate. Before opening the machine, please make sure the machine input power wire
unconnected to power supply.
2). Check junction circuit inside of welding machine on time, make sure all the junction right, stable connector
(especially on plug connector or component). If anyone is rust or loose, please get rid of the rust or oxide film
by sand paper, and reconnect it and make the connection fastened up.
3). Don't be close to electron component (such as fan) inside of machine by hand, hair, and other tools when
the machine is energized.
4). Get rid of the dust with dry compressed clean air general. If machine work under dense smoke & pollution
air, please get rid of the dust every day. The compressed pressure should be in the workable level to avoid
component damage.
5). Try best to keep the water & water vapor from inside of machine. If the water come into inside of machine,
please kindly dry the machine immediately. Then, please test insulation situation of welding machine
(including each connections or between connections and shell.) firstly, if ok, please continue to work.
6). Check all the cover of welding cable general. Any wear out, please bind up or change it.
7). Please keep the welding machine in original package in dry place during long time no using.

9. Fault and repair

In order to optimize the machine's function and ensure a safe working condition, maintenance and
troubleshooting is critical. When performing maintenance and troubleshooting, please focus on and check the
following parts and points: welding torch, wear of spare parts in the wire feeding device, deformation and gas