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7.1. Working environment

1) Welding should be carried out in a relatively dry environment with its humidity of 90% or less.

2) The temperature of the working environment should be within -10C to 40C.

3) Avoid welding in the open air unless sheltered from sunlight and rain, and never let rain or water infiltrate the machine.

4) Avoid welding in dusty area or environment with corrosive chemical gas.

5) Avoid gas shielded arc welding in environment with strong airflow.

7.2. Safety tips

Over-current/overheating protection circuit is installed in this welding machine. If the output current is too high or overheating

generated inside this welding machine, this welding machine will stop automatically. However, inappropriate use will still lead to

machine damage, so please note:

7.2.1. Ventilation:

High current passes when welding is carried out, thus natural ventilation cannot satisfy the welding machine's cooling

requirement. Maintain good ventilation of the louvers of this welding machine. The minimum distance between this welding

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 service life of this welding machine.

7.2.2. No over-current:

Remember to observe the max load current at any moment (refer to the optioned duty cycle). Make sure that the welding

current should not exceed the max load current.

If welding is carried out under a current which is higher than the max current, over-current protection will occur; the output

voltage of the welding machine will be not stable; arc interruption will occur. In this case, please lower the current.

7.2.3. No over-load:

Over-load current could obviously shorten the welding equipment's life, or even damage the machine.

A sudden halt may occur while the welding operation is carried out while this welding machine is of over-load status. Under

this circumstance, it is unnecessary to restart this welding machine. Keep the built-in fan working to bring down the

temperature inside the welding machine.

7.2.4. Avoid electric shock:

An earth terminal is available for this welding equipment. Connect it with the earth cable to avoid the static and electric

shock.

7.CAUTION