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3. Power Supply Switch
While the power supply switch is on, the built-in fan works and current
meter displays the current value.
4. Welding Current Output Setting
Set the current output by using the "welding current knob"
Approximate current settings for different electrode sizes are as follows:
Ø1.6: 30-50A; Ø2.0: 40-80A; Ø2.5: 70-bOA; Ø3.2: 110-170A; Ø4.0:
130-240; Ø5.0: 200-360A
5. Pilot Lamp
If the pilot lamp is on, it indicates that the equipment has over heated,
which possibly is the consequence of over duty cycle operation. This
welding equipment automatically restarts when the temperature inside the
machine drops to required level, and the pilot lamp turns off.
6. Current Meter (fitted to EasyArc ZX7-300 and EasyArc ZX7-400)
Digital meter indicates welding current.
Operating duty cycle
The operation of this welding equipment should be strictly accordance with the
specification. Please refer to the table of Equipment Specifications (Table 1).
A sudden halt may occur whilst the welding operation is being carried out when
this welding machine is in an over-load state. Under this circumstance, the
built-in fan works to bring down the temperature inside the welding equipment,
therefore it is unnecessary to disconnect the mains input of the welding
machine.
CHECKS
• This welding equipment is correctly earthed
• All the connections are made. Particular attention should be drawn to the
connection of earth clamp and work piece.
• The output terminals of electrode holder and earth cable are firmly attached.
• The output polarity is correct.
• In cases where an earth leakage switch is used, the maximum earth leakage
is less than 30mA.
CAUTIONS
1. Working Environment
1.1
The location in which this welding equipment is installed should be free
of excessive dust, corrosive chemical/ gases, flammable gas or
materials etc, and of maximum 80% relative humidity.
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