YASKAWA YWE-EH500-6N0 Instruction Manual page 64

6.3 Precautions on Welding Operation
4. Power switch operation
The inverter welding source is the forced air-suction cooling type. Do not turn OFF the
power supply switch until the cooling fan completely stops after completion of the oper-
ation. To prevent electric shock, never disconnect or connect the cables for the weld-
ing source, the wire feeder, the welding torch, etc. while the power is ON. Make sure
that the power supply switch of the welding source is turned OFF after the operation.
5. Cooling fan
The cooling fan starts rotating as soon as the power supply is turned ON. Then, the
fan stops if approx. 15 minutes passes without arc start. However, the fan restarts
rotating when welding starts, and it stops approx. 15 minutes after the welding ends.
One of three fans operates at all times in sync with the power supply switch.
6. Stretch a protective curtain around the welding operation space for workers and others
to protect from arc light, spatter, and slag.
7. Installation Environment
Do not weld on a wet earth floor or metallic floor to avoid electric shock. Also avoid
welding where there are inflammables to prevent fire due to scattering of heated spat-
ter or slag.
8. The welding source cannot be used for gouging other than CO
9. Radio disturbance
Noise may be generated over the radio during welding.
When listening to the radio, keep the radio as far as possible from the welding source.
When a radio is not on battery but on a 100 VAC power supply, do not bring the weld-
ing torch close to the 100 VAC cable.
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