5 OPERATION
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© ESAB AB 2017
5.1
Connection and control devices
1.
Mains supply switch
10.
Connection for return cable (-), medium
inductance
2.
Switch, coarse control
11.
Connection for return cable (-), low
inductance
3.
Switch, precise control
12.
Knob for wire speed setting
4.
Indicator lamp, power supply ON
13.
Knob for selecting 2/4-stroke control mode
5.
Orange indicating lamp, overheating and
loss of coolant*
14.
Knob for selecting - creep start - ON/OFF
6.
EURO - connector (for welding torch)
15.
Knob for burn-back time setting
7.
Connection for cooling water to the
welding torch (Blue - with ELP** switch)
16.
Digital instrument - V / A
8.
Connection for cooling water from the
welding torch (Red)
17.
Water flow guard (option, see
"ACCESSORIES" chapter)
9.
Connection for return cable (-), high
inductance
* Indicating loss of coolant, only when water flow guard is used, see "Water flow guard"
section.
** ELP = ESAB Logic Pump, see "Water connection" section.
5.2
Start
When switched on, indicator lamps [4,5] are on for 2 seconds. Normally, if the power source
is not overheated, it should start to work in idle mode, which is indicated by blinking of the
supply ON lamp. The fan and the coolant pump are stopped. The fan starts at the first start of
welding. The coolant pump starts at the same moment, if it is switched on with ELP switch on
the water outlet [7].
5.3
Overheating protection
The power source has 2-step control of fan speed and overheating protection. If temperature
crosses the threshold point, the fan starts to run with increased speed. If the internal
