Water Connection; Water Flow Guard; Idle Mode; Mig C420W Pro / Mig C420 Pro - ESAB Origo Mig C420 PRO Instruction Manual

5 OPERATION
temperature becomes too high, the welding is interrupted and disabled. This state is
indicated by permanent lighting of the orange indicating lamp on the front of the unit. It resets
automatically when the temperature falls down.
5.4

Water connection

The Mig C420w PRO has a sensor ELP, ESAB Logic Pump, which senses whether the water
hoses of the welding torch are connected. When a water-cooled welding torch is connected,
the water pump is active.
It is recommended to switch the power source off by means of the mains switch ON/OFF [1]
for connecting the cooling water hoses to/from the Mig C420w PRO.
5.5

Water flow guard

The power sources with cooling unit (Mig C420w PRO) can be fitted with a water flow guard
(option - see "ACCESSORIES" chapter).
The water flow guard interrupts and disables welding in event of loss of coolant. This state is
indicated by the orange indicating lamp on the front of the power source flashing. If there is a
lack of coolant flow, after 1 min the pump is switched off and locked in this state. The pump
restarts from that state along with start of welding.
5.6

Idle mode

The power source has an idle mode. The fan is switched off 5 min after the end of the last
welding, or after 5 min of work with decreased speed without welding. The pump is switched
off 3 min after the last welding. When both fan and pump are switched off the power supply
lamp [4] on the front panel flashes.
5.7

Mig C420w PRO / Mig C420 PRO

The Mig C420w PRO / Mig C420 PRO is equipped with a standard control unit. The welder
can manually select and adjust all welding parameters.
• Wire speed (1.9 - 25 m/min) is set with knob [12].
• The stroke control (2/4 stroke) is selected with switch [13].
• Creep start i.e. start with 50% wire speed is toggled ON/OFF with switch [14].
• Burn back time is set with knob [15].
Mig C420w PRO / Mig C420 PRO can be fitted with a digital instrument that displays current
and voltage. It incorporates a hold function (see "ACCESSORIES" chapter).
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