Weco Discovery 162T User manual

Cod. 006.0001.1940
15/02/2021 V.2.2
Discovery 162T
Instruction manual
ENG
Translation of original instructions

WELD THE WORLD
Cod. 006.0001.1940
15/02/2021 V.2.2 Discovery 162T
2
ENGLISH

WELD THE WORLD
Cod. 006.0001.1940
15/02/2021 V.2.2
Discovery 162T
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INDEX
1 INTRODUCTION.......................................................................................................................................... 4
1.1 PRESENTATION.......................................................................................................................................... 5
2 INSTALLATION .......................................................................................................................................... 5
2.1 CONNECTIONS TO THE MAINS POWER SUPPLY .................................................................................. 5
2.2 FRONT PANEL............................................................................................................................................. 6
2.3 REAR PANEL............................................................................................................................................... 6
2.4 PREPARING FOR MMA WELDING............................................................................................................. 7
2.5 PREPARING FOR TIG WELDING ............................................................................................................... 8
3 USER INTERFACE ...................................................................................................................................... 9
4 UNIT POWER-UP ...................................................................................................................................... 10
5 RESET (LOAD FACTORY SETTINGS)..................................................................................................... 11
6 ALARM MANAGEMENT ........................................................................................................................... 12
7 MMA WELDING......................................................................................................................................... 12
7.1 MMA WELDING - FIRST LEVEL MENU .................................................................................................... 12
8 DC TIG WELDING ..................................................................................................................................... 14
8.1 DC TIG WELDING - FIRST LEVEL MENU ................................................................................................ 14
8.2 TIG DC WELDING - SECOND LEVEL MENU ........................................................................................... 19
8.3 TORCH TRIGGER PROCEDURE ............................................................................................................. 20
9 TECHNICAL DATA .................................................................................................................................... 25
10 WIRING DIAGRAM.................................................................................................................................... 27
10.1 TORCH CONNECTOR (front panel) .......................................................................................................... 28
11 SPARES..................................................................................................................................................... 29
11.1 TORCH CONNECTORS COMPLETE KIT................................................................................................. 30

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1 INTRODUCTION
IMPORTANT!
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.
LEGEND
DANGER!
This pictogram warns of danger of death or serious injury.
WARNING!
This pictogram warns of a risk of injury or damage to property.
CAUTION!
This pictogram warns of a potentially hazardous situation.
INFORMATION!
This pictogram gives important information concerning the execution of the relevant operations.
This symbol identies an action that occurs automatically as a result of a previous action.
This symbol identies additional information or a reference to a different section of the manual
containing the associated information.
§ This symbol identies a reference to a chapter of the manual.
*1 The symbol refers to the associated numbered note.
NOTES
The gures in this manual are purely guideline and the images may contain differences with respect to
the actual equipment to which they refer.

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Discovery 162T
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1.1 PRESENTATION
Discovery 162T is an inverter DC TIG/MMA portable welding power source.
The sturdiness of the components of this unit makes it a reliable working companion for workshop and
outdoor applications.
The simply and intuitive interface allows high precision adjustments.
Special HF control provides 100 % rapid and precise arc ignition.
Up to 3,25 mm diameter electrode welding is possible in MMA.
MODE PROCEDURE
MMA
TIG CONTINUOUS
2 STROKE LIFT-ARC (2T)
4 STROKE LIFT-ARC (4T)
SYN
TIG PULSED
TIG SYNERGIC TIG
SPOT
2T SPOT
2T SPOT + HF
4 STROKE + HF (4T HF)
Accessories that can be connected to the unit:
• Overcut device to protect the power source from power supply voltage spikes that could dam-
age the electrical components.
2 INSTALLATION
DANGER!
Lifting and positioning
Read the warnings highlighted by the following symbols in the “General prescriptions for use”.
2.1 CONNECTIONS TO THE MAINS POWER SUPPLY
The characteristics of the mains power supply to which the equipment shall be connected are given in
the chapter entitled “TECHNICAL DATA”.
The machine can be connected to motor-generators provided their voltage is stabilised.
Connect/disconnect the various devices with the machine switched off.

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2.2 FRONT PANEL
31 4 2
○ Negative pole welding socket.[Item 1].
○ Positive pole welding socket.[Item 2].
○ Connector for logic signals of TIG torch.[Item 3].
○ Connector for gas feed hose: Torch power source [Item 4].
2.3 REAR PANEL
2
3
1
○ Welding power source ON/OFF switch [Item 1].
○ Connector for gas feed hose [Item 2]
• cylinder-generator
○ Power cable. [Item 3].
• Total length (including internal part): 2.5 m
• Number and cross section of wires: 3 x 2.5 mm2
• Type of plug supplied: Schuko

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2.4 PREPARING FOR MMA WELDING
1. Set the welding power source ON/OFF switch to “O” (unit off).
2. Plug the power cable plug into a mains socket.
3. Choose the electrode based on the type of material and thickness of the workpiece to be welded.
4. Insert the electrode in the electrode holder.
5. Connect the electrode holder clamp plug to the following welding socket: Positive pole welding
socket.
6. Connect the earth clamp plug to the following welding socket: Negative pole welding socket.
7. Connect the earth clamp to the workpiece being processed.
DANGER!
Electric shock hazard!
Read the warnings highlighted by the following symbols in the “General prescriptions for use”.
8. Set the welding power source ON/OFF switch to “I” (unit on).
9. Select the following welding mode on the user interface: MMA
10. Set the required welding parameter values on the user interface.
The system is ready to start welding.
REAR VIEW FRONT VIEW

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2.5 PREPARING FOR TIG WELDING
1. Set the welding power source ON/OFF switch to “O” (unit de-energized).
2. Plug the power cable plug into a mains socket outlet.
3. Connect the gas hose from the welding gas cylinder to the rear gas connection.
4. Open the cylinder gas valve.
5. Connect the gas hose of the welding torch to the front gas connection.
6. Connect the electrode holder clamp plug to the following welding socket: Negative pole welding
socket.
7. Choose the electrode based on the type of material and thickness of the workpiece to be welded.
8. Insert the electrode in the TIG torch.
9. Connect the earth clamp plug to the following welding socket: Positive pole welding socket.
10. Connect the earth clamp to the workpiece being processed.
11. Set the welding power source ON/OFF switch to “I” (unit powered).
12. Select the following welding mode on the user interface: DC TIG
13. Press the torch trigger with the torch well clear of any metal parts. This serves to open the gas
solenoid valve without striking the welding arc.
14. Use the ow control valve to adjust the ow of gas as required while the gas is owing out.
15. Set the required welding parameter values on the user interface.
The system is ready to start welding.
REAR VIEW FRONT VIEW

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3 USER INTERFACE
S T O P
S T O P
Menu
Menu
Menu
Menu
SYN
SPOT
L1 L4 L5 L6 L2 L3 L7 L8 E1
D1
S1 S2 S3
L9
L10
L11
L12
L13
L14
L15
CODE SYMBOL DESCRIPTION
L1
S T O PS T O P
Overheating alarm.
Indicates tripping of the welding power source thermal protection.
Leave the unit running so that the overheated components cool as rapidly as possible.
When the unit has cooled, the welding power source will reset automatically.
- Make sure that the power required by the welding process is lower than the maximum rated
power output.
- Check that the operating conditions are in compliance with the welding power source data
plate specications.
- Check for the presence of adequate air circulation around the welding power source.
L2 When this LED illuminates the following parameter can be set: PRE-GAS TIME
L3 When this LED illuminates the following parameter can be set: SLOPE UP
L4 When this LED illuminates the following parameter can be set: PULSED CURRENT FRE-
QUENCY
L5 When this LED illuminates the following parameter can be set: WELDING CURRENT

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L6 When this LED illuminates the following parameter can be set: DOWN SLOPE
L7 When this LED illuminates the following parameter can be set: FINAL CURRENT
L8 When this LED illuminates the following parameter can be set: POST GAS TIME
L12 Illumination shows that the following function has been activated: 2 stroke procedure.
L13 Illumination shows that the following function has been activated: 4 stroke procedure.
L14
SPOT
Illumination shows that the following function has been activated: 2 stroke procedure + high
frequency arc strike (HF).
A ashing signal means the following function has been activated: 2 stroke spot procedure +
high frequency arc strike (HF).
L15 Illumination shows that the following function has been activated: 4 stroke procedure + high
frequency arc strike (HF).
L9 This LED illuminates to show that the following welding mode is selected: MMA
L10 This LED illuminates to show that the following welding mode is selected: TIG DC CONTI-
NUOUS
L11
SYN
This LED illuminates to show that the following welding mode is selected: PULSED DC TIG
A ashing signal means the following welding mode is selected: SYNERGIC PULSED DC TIG
D1 The display shows the value of the selected parameter.
S1
Menu
Menu
Menu
Menu
Press the button to select the parameter to be set.
Hold down the button for 3 seconds to gain access to the second level menu.
S2 This button selects the welding mode.
S3 This button selects the torch trigger procedure.
E1 The encoder sets the value of the selected parameter.
4 UNIT POWER-UP
Set the welding power source ON/OFF switch to “I” to switch on the unit.
FX.X The message appears on the following display: D1.
x.x= software version
First power-up or power-ups following a RESET procedure
The welding power source sets up for welding with the factory preset values.
Subsequent power-ups
The welding power source sets up for welding in the latest stable welding conguration that was active
at the time of power-off.