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Gys PROGYS FLEX 250 A CEL Manual

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Hot Start & Arc Force adjustments:
FLEX 250 A CEL
Hot Start 0 90%
Arc Force 0 90%, or type of electrode
Adjust the Arc Force from 0 to 90%, then switch to electrode mode « rut », « bas » or « cel ». These modes
are optimum settings for each different types of electrode.
Advice :
low Hot Start : for thin metal sheets
high Hot Start for metals that are difficult to weld (dirty or oxidized pieces)
To adjust the Hot Start and Arc Force, go through the following steps.
Press button
Set the required Hot Start percentage (display ) using button
Validate the required figure by pressing the button
Set the required Arc Force percentage (display ) using key .
Validate the required figure by pressing the selector button.
TIG LIFT
DC TIG welding requires protective gas (argon).
Follow the steps below :
1. Connect the earth clamp to the positive socket (+).
2. Connect a torch to the negative socket (-).
3. Connect the gas pipe from the torch to the gas cylinder
4. Select TIG mode using the selection button .
5. Adjust the desired current (display ) using the key .
Advice : Take 30A/mm as a default setting and adjust according to the welding workpiece.
6. Set the gas flow on the flowmeter of the gas cylinder, and then open the valve of the torch
7. To start :
a- Touch the workpiece with
the electrode
b-
Raise the electrode from
2 to 5 mm from the
workpiece
8. At end of welding :
Raise the torch 2 times in quick succession(raise-lower-raise-lower) to trigger the automatic downslope
(see section below). This movement must be performed in less than 4 sec, at a height of 5 to 10 mm.
Then close the valve of the torch to stop the gas after the electrode has cooled.
Automatic Arc slope with adjustable time
Function activation :
This corresponds to the time required at the end of welding for the gradual decline in the welding current
until the arc stops. This function helps to avoid cracks and craters at end of welding.
… 10 …


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