Introduction; Important; Front Panel - gala gar GALA ELECTRONICS 221 ACDC Manuel Technique D'instructions

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INTRODUCTION

This handbook must be consigned to the user prior to
installation and commissioning of the unit.
Read the "General prescriptions for use" handbook supplied
separately from this handbook before installing and
commissioning the unit.
The meaning of the symbols in this manual and the associated
precautionary information are given in the "General
prescriptions for use".
If the "General prescriptions for use" are not present, it is
mandatory to request a replacement copy from the
manufacturer or from your dealer.
Retain these documents for future consultation.
This symbol identifies an action that occurs automatically as
a result of a previous action.
This symbol identifies additional information or a reference to
a different section of the manual containing the associated
information.
§ This symbol identifies a reference to a chapter of the manual.
This symbol accompanies important information concerning
the execution of the relevant operations.
221 AC/DC is an advanced technology single-phase welding power
source for AC and DC TIG welding operations.
AC TIG functions are ideal for aluminum, magnesium and related
alloys welding.
Mild steel, stainless steel and copper can be easily welded in DC TIG.
AC TIG welding is optimized thanks to:
− Synergic arc ignition selection located on the front panel, it
modifies the ignition according to electrode diameter.
− Extra fusion function maximizes arc focusing for considerable thin
material in AC TIG welding.
− Mixed AC/DC increases arc penetration for thick aluminum plates.
− Pulsed AC TIG mode which prevents the risk of deformation of the
workpiece in the case of prolonged welding operations.
Up to 4,00mm diameter electrode welding is possible in MMA.
The fan is turned on only during welding, at the end of the welding
process it remains on for a fixed period of time according to welding
conditions.
The fan is nonetheless controlled by specific thermal sensors that
guarantee a correct cooling of the machine.
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GALA ELECTRONICS 221ACDC GALA ELECTRONICS 221ACDC GALA ELECTRONICS 221ACDC GALA ELECTRONICS 221ACDC

IMPORTANT!

KEY
The welding modes and procedures available are those indicated in
the table.
MODE
MMA
TIG DC
CONTINUOUS
+
PULSED DC TIG
+
TIG DC SYNERGIC
TIG AC
CONTINUOUS
+
PULSED AC TIG
Accessories that can be connected to the unit:
− manual remote controller for remote adjustment of the welding
current.
− foot-pedal remote controller for TIG torch arc striking and remote
adjustment of welding current.
− UP/DOWN torch or torch with potentiometer.
− liquid cooler for TIG torches.
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FRONT PANEL

1
1: Negative pole welding socket.
2: Positive pole welding socket.
3: Connector for logic signals of TIG torch.
4: Connector for gas feed hose:
power source torch
PROCEDURE
2 STEP LIFT-ARC (2T)
2 STEP SPOT (2T-SPOT)
2 STEP + HF (2T HF)
2 STEP HF SPOT (2T-SPOT
+
HF)
4 STEP LIFT-ARC (4T)
4 STEP + HF (4T HF)
+
4 STEP BI-LEVEL (4T B-
LEVEL)
4 STEP BI-LEVEL + HF (4T B-
+
LEVEL HF)
4 3 2
E E E E GB GB GB GB