IGBT MIG-200M, User Manual

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14
The following operation requires sufficient professional
knowledge on electric aspect and comprehensive safety
knowledge. Operators should be holders of valid qualification
certificates which can prove their skills and knowledge. Make
sure the input cable of the machine is cut off from the electricity
utility before uncovering the welding machine.
(1) Check periodically whether inner circuit
connection is ok (esp. plugs). Tighten the loose connection. If
there is oxidization, remove it with sandpaper and then
reconnect.
(2) Keep hands, hair and tools away from the moving
parts such as the fan to avoid personal injury or machine
damage.
(3) Clean the dust periodically with dry and clean
compressed air. If welding in environment with heavy smoke
and pollution, the machine should be cleaned daily. The
pressure of compressed air should be at a proper lever lest the
small parts inside the machine be damaged.
2. Safety Tips
Protection circuit is installed in this machine. If the input voltage or the output current is too high or
machine inside temperature over heating inside, the machine will stop automatically. However,
excessive use (e.g. too high voltage) of machine may also damage machine, so please note:
2.1 Ventilation
High current passes when welding is carried out, thus natural ventilation cannot satisfy the
machine's cooling requirement. Maintain good ventilation through the louvers of the machine. The
minimum distance between the machine and any other objects in or near the working area should
be 30cm. Good ventilation is of critical importance for the normal performance and lifespan of the
machine.
2.2 Welding operation is forbidden while the machine is overload. Remember to observe the max
load current at any moment (refer to the corresponding duty cycle). Make sure that the welding
current should not exceed the max load current. Overload could obviously shorten the machine's
lifespan, or even damage the machine.
2.3 Over-voltage is forbidden.
Regarding the power supply voltage range of the machine, please refer to
“Main Parameters”
table. This machine is of automatic voltage compensation, which enables the maintaining of the
voltage range within the given range. In case that the input voltage exceeds the stipulated value, it
would possibly damage the components of the machine.
2.4 A sudden halt may occur while the machine is of overload status. Under this circumstance, it is
unnecessary to restart the machine. Remain the built-in fan working to lower the temperature
inside the machine.
8. MAINTENANCE
(1) Check periodically whether inner circuit connection is in good condition (esp. plugs).
Tighten the loose connection. If there is oxidization, remove it with sandpaper and then
reconnect.
(2) Keep hands, hair and tools away from the moving parts such as the fan to avoid personal
injury or machine damage.
(3) Clean the dust periodically with dry and clean compressed air. If welding environment
with heavy smoke and pollution, the machine should be cleaned daily. The pressure of
compressed air should be at a proper level in order to avoid the small parts inside the
machine to be damaged.
(4) Avoid rain, water and vapor in filter the machine. If there is, dry it and check the insulation
with equipment (including that between the connections and that between the connection