Caution - Yeswelder CT2050 Operator's Manual

CAUTION

Working Environment
1. Welding should be carried out in a dry environment with humidity of 90% or less.
2. The working environment temperature should be between -10°C and 40°C.
3. Avoid welding in the open air unless sheltered from sunlight and rain. Keep the welder dry.
4. Avoid welding in a dusty area or environment with corrosive chemical gas.
5. Gas shielded arc welding should be operated in an environment without strong airflow.
Safety Tips
Over-current/over-voltage/over-heating protection circuit is installed in this machine. When the network voltage, output current, or in-
ner temperature exceeds the set standard, the machine will stop working automatically. However, excessive operation (over-
voltage) will lead to welder damage. Therefore, please note:
1) Ventilation
This is an industrial welding machine and can create a large current that requires strict cooling devices instead of natural ventilation.
Therefore the built-in two fans are very important to ensure effective cooling and stable working performance. The operator should
make sure that the louvers be uncovered and unblocked. The minimum distance between the machine and nearby objects should
be 30cm. Good ventilation is of critical importance to the normal performance and lifespan of the machine.
2) Over-load is forbidden
The welder is operated according to the allowable duty circle (refer to the corresponding duty cycle). Make sure that the welding cur-
rent should not exceed the max load current. An overload could obviously shorten the machine's lifespan, or even damage the ma-
chine.
3) Over-voltage is forbidden
Please refer to "Technical Parameters" for the power supply voltage range. This machine is of automatic voltage compensation to
ensure the welding current is within the given range. If the input voltage exceeds the stipulated value, it would possibly damage the
components of the machine. The operator should take according measures in this case.
4) Reliable ground connection. There is an ground screw (with ground remark) in the rear part of each machine. Connect it
with an earth cable (section≥6mm2) to avoid the static and electric shock.
5) A sudden halt may occur with the front panel's red indicator lighting up while the machine is of over-load status. Under
this circumstance, it is unnecessary to restart the machine for it's resulted from over-heating and triggering the temperature control
switch. Keep the built-in fans working to lower the machine's temperature. Welding can be resumed when the temperature falls into
the standard range and the red indicator is off.
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