Cloos Glw 322 Guide

operating instructions

and spare parts

GLW 322

Rev.0- EN -

Carl Cloos Schweisstechnik GmbH

Industriestrasse

35708 Haiger

Germany

Telefon (0 27 73) 85-0

Telefax (0 27 73) 85-275

E-Mail: [email protected]

Internet: http://www.cloos.de

RW - FP - Rev.0

Ausgabedatum 3. 02 2015

Keep for further use.

CARL CLOOS Schweisstechnik GmbH

Industriestrasse

35708 Haiger

Tel.(+49) 2773/85-0

Fax.(+49) 2773/85-275

mail: [email protected]

www.cloos.de

Document: QIGLW322 Month/Year: 01/14

EC-Declaration of Conformity

in accordance with EC Directives 2006/95/EG (low voltage) and 2004/108/EG (EMV)

Designation of the machine: TIG welding machine

Type: QINEO GLW 322

Serial number: see type plate (on the rear of the machine)

The following EC Directives have been applied:

- EC Low voltage directives (2006/95/EG)

- EC Directives on Electromagnetic compatibility (2004/108/EG)

- EC Directives RoHS (2011/65/EU)

The following harmonised standards have been applied:

- EN 60974-1 Arc welding equipment

Part 1: Welding power sources

- EN 60974-3 Arc welding equipment

Teil 3: Arc striking and stabilizing devices

- EN 60974-10 Arc welding equipment

Part 10: Electromagnetic compatibility (EMC) requirements

Manufacturer's signature: Gerald Mies

Information on the signatory: Managing Director

We herewith certify that the welding machine mentioned below has been developed, designed and

manufactured in accordance with the EC Directives and brought on the market.

Any significant modifications or extensions on the machine which are not carried out by the above

manufacturer or hins authorised representative will invalidate this Declaration of Conformity.

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CONTENTS

1INTRODUCTION ............................................................................................................................................... 4

2INSTALLATION ................................................................................................................................................ 5

2.1 CONNECTIONS TO THE ELECTRICAL MAINS NETWORK........................................................................... 5

2.2 FRONT PANEL.................................................................................................................................................. 5

2.3 REAR PANEL.................................................................................................................................................... 5

2.4 PREPARING FOR MMA WELDING.................................................................................................................. 6

2.5 PREPARING FOR TIG WELDING .................................................................................................................... 8

3COMMISSIONING........................................................................................................................................... 10

3.1 USER INTERFACE ......................................................................................................................................... 10

3.2 UNIT POWER-UP............................................................................................................................................ 13

3.3 RESET (LOAD FACTORY SETTINGS) .......................................................................................................... 13

3.3.1 PARTIAL RESET ................................................................................................................................................................. 13

3.3.2 TOTAL RESET .................................................................................................................................................................... 13

3.4 SET-UP (INITIAL SET-UP OF THE WELDING POWER SOURCE)............................................................... 14

3.5 TORCH LOADING........................................................................................................................................... 15

3.6 ALARMS MANAGEMENT ............................................................................................................................... 16

4WELDING SETTINGS..................................................................................................................................... 17

4.1 TORCH TRIGGER PROCEDURE................................................................................................................... 17

4.2 SELECTION OF THE WELDING MODE AND TORCH TRIGGER PROCEDURE......................................... 20

4.3 WELDING PARAMETERS .............................................................................................................................. 21

4.4 PARAMETERS ACTIVATION ......................................................................................................................... 24

4.5 PARAMETERS SETTING: (1ST LEVEL) ........................................................................................................ 26

4.6 PARAMETERS SETTING: (2ND LEVEL)........................................................................................................ 28

4.7 PARAMETERS SETTING: SPECIAL FUNCTIONS ........................................................................................ 29

4.8 JOBS MANAGEMENT..................................................................................................................................... 30

4.8.1 SAVING A JOB.................................................................................................................................................................... 30

4.8.2 LOADING A USER JOB OF FACTORY SET JOB.............................................................................................................. 30

4.8.3 DELETING A JOB................................................................................................................................................................ 30

5TECHNICAL DATA......................................................................................................................................... 31

6SPARE PARTS ............................................................................................................................................... 32

6.1 GLW 322 ......................................................................................................................................................... 32

7ELECTRICAL DIAGRAM................................................................................................................................ 34

7.1 GLW 322 ......................................................................................................................................................... 34

7.2 TORCH CONNECTOR.................................................................................................................................... 36

7.3 REMOTE CONTROLLER CONNECTOR........................................................................................................ 36

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1INTRODUCTION

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.

KEY

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 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.

The symbol refers to the associated numbered note.

NOTES

The figures in this manual are purely guideline and the images may

contain differences with respect to the actual equipment to which they

refer.

INTRODUCTION

GLW 322 is an advanced technology three-phase welding power

source for AC and DC TIG welding operations.

Mild steel, stainless steel and copper can be easily welded in DC TIG.

AC TIG functions are ideal for aluminum, magnesium and related

alloys welding.

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 6,00 mm diameter electrode welding is possible in MMA.

Fan. 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.

Accessories/ancillary devices that can be connected to the unit:

-UP/DOWN torch or torch with potentiometer to adjust the welding

current from a distance.

-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.

The maximum and minimum TIG welding current values can be

set with the foot pedal controller.

If both remote controllers are connected, the foot pedal assumes

priority over the UP/DOWN or potentiometer TIG torch.

-Liquid cooler for TIG torches.

-Power source trolley.

Consult your dealer for an updated list of accessories and the latest

available new products.

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2INSTALLATION

DANGER!

Lifting and positioning

Read the warnings highlighted by the following symbols in the

“General prescriptions for use”.

2.1 CONNECTIONS TO THE ELECTRICAL MAINS

NETWORK

The characteristics of the mains power supply to which the equipment

shall be connected are given in the section entitled “Technical data”

on page 31.

The machine can be connected to motorgenerators provided their

voltage is stabilised.

Connect/disconnect the various devices with the machine switched

off.

2.2 FRONT PANEL

Connector for gas feed hose:

power source torch

Connector for logic signals of TIG torch.

Remote controller connector.

TIG TORCH welding socket.

Negative pole welding socket.

Positive pole welding socket.

Welding power source ON/OFF switch.

Mains protection ON LED.

This LED illuminates if an incorrect operating condition occurs:

-absence of a phase in the power supply line.

2.3 REAR PANEL

Connector for gas feed hose:

cylinder power source

Cooler power feeding connector.

Voltage: 400 V a.c.

Current output: 1.0 A

IP protection rating: IP20 (cap open) / IP66 (cap closed)

DANGER!

High voltage!

If the socket is not connected to any devices always close the cap:

presence of hazardous voltage levels!

Power cable.

Total length (including internal part): 5,0 m

Number and cross section of wires: 4 x 2,5 mm2

Power plug type: not supplied

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2.4 PREPARING FOR MMA WELDING

Set the welding power source ON/OFF switch to “O” (unit de-

energized).

Plug the power cable plug into a mains socket outlet.

Choose the electrode based on the type of material and thickness

of the workpiece to be welded.

Insert the electrode in the electrode holder.

Connect the electrode holder cable to the welding socket based on

the polarity requested by the type of electrode used.

Connect the plug of the ground clamp to the welding socket on the

basis of the polarity required.

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”.

Set the welding power source ON/OFF switch to “I” (unit

powered).

Select the following welding mode on the user interface: MMA

10.

Set the required welding parameter values on the user interface.

When the remote controller [RC] is connected and the relative

locking screw is tightened, welding current can be adjusted using

the remote controller.

The system is ready to start welding.

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(polarity to basic electrode)

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2.5 PREPARING FOR TIG WELDING

NOTE: For the cooler to power source assembly procedure refer

to the cooler instruction manual.

Set the welding power source ON/OFF switch to “O” (unit de-

energized).

Plug the power cable plug into a mains socket outlet.

Connect the gas hose from the welding gas cylinder to the rear

gas socket.

Open the cylinder gas valve.

Choose the electrode based on the type of material and thickness

of the workpiece to be welded.

Insert the electrode in the TIG torch.

Connect the torch plug to the welding socket on the basis of the

polarity required by the type of electrode in question.

Connect the plug of the ground clamp to the welding socket on the

basis of the polarity required.

Connect the gas hose from the welding torch to the front gas

socket.

10.

Couple the welding torch connector to the TIG torch signals

connector.

11.

Connect the earth clamp to the workpiece being processed.

12.

Set the welding power source ON/OFF switch to “I” (unit

powered).

13.

Select the following welding mode on the user interface: TIG DC /

TIG AC

14.

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.

15.

Use the flow control valve to adjust the flow of gas as required

while the gas is flowing out.

16.

Set the required welding parameter values on the user interface.

When the remote control pedal is connected and the relative

locking screw is tightened the welding current will vary in relation

to the pressure exerted on the pedal.

The system is ready to start welding.

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(polarity for tungsten electrode)

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3COMMISSIONING

3.1 USER INTERFACE

CODE

SYMBOL

DESCRIPTION

Illuminates to show a value in the following unit of measurement: AMPERES

Illuminates to show the last voltage and current values measured during welding.

The value appears on the following displays: D1-D2

The LED switches off when a new welding procedure is started, or when any of the welding settings is modified.

Illuminates to show a value in the following unit of measurement: VOLTS

This LED illuminates to confirm the presence of power on the output sockets.

This LED illuminates to show an anomaly in the operating conditions.

See § 3.6 ALARMS MANAGEMENT page 16.

Illuminates to show a value in the following unit of measurement: MILLISECONDS/SECONDS

Illuminates to show a value in the following unit of measurement: HERTZ

Illuminates to show a value in the following unit of measurement: AMPERES

Illuminates to show a value in the following unit of measurement: PERCENTAGE

L10

Illuminates to show a value in the following unit of measurement: MILLIMETRES

L11

This LED indicates that the current reference setting is imposed by the remote controller.

L12

DC TIG mode: When this LED illuminates the following parameter can be set: Q-START

AC TIG mode: When this LED illuminates the following parameter can be set: MIX AC

L13

DC TIG mode: When this LED illuminates the following parameter can be set: DYNAMIC ARC

AC TIG mode: When this LED illuminates the following parameter can be set: FUSIONE EXTRA

L14

DC TIG mode: When this LED illuminates the following parameter can be set: MULTI TACK

AC TIG mode: When this LED illuminates the following parameter can be set: AC FREQUENCY

L15

AC TIG mode: When this LED illuminates the following parameter can be set: AC TIG BALANCE

L16

AC TIG mode: When this LED illuminates the following parameter can be set: ELECTRODE DIAMETER

L17

When this LED illuminates the following parameter can be set: STARTING CURRENT

L18

When this LED illuminates the following parameter can be set: SLOPE UP

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CODE

SYMBOL

DESCRIPTION

L19

When this LED illuminates the following parameter can be set: WELDING CURRENT

L20

When this LED illuminates the following parameter can be set: SECOND CURRENT B-LEVEL

L21

When this LED illuminates the following parameter can be set: BASE CURRENT

L22

When this LED illuminates the following parameter can be set: PEAK TIME

L22+L23

When this LED illuminates the following parameter can be set: PULSED CURRENT FREQUENCY

L23

When this LED illuminates the following parameter can be set: BASE TIME

L24

When this LED illuminates the following parameter can be set: DOWN SLOPE

L25

When this LED illuminates the following parameter can be set: FINAL CURRENT

L26

When this LED illuminates the following parameter can be set: POST-GAS

L27

Illumination shows that the following function has been activated: HIGH FREQUENCY ARC STRIKE (HF)

L28

Illumination shows that the following function has been activated: 2 stroke procedure.

L29

Illumination shows that the following function has been activated: 4 stroke procedure.

L30

Illumination shows that the following function has been activated: 4 stroke B-level procedure + high frequency arc strike

(HF).

L31

Illumination shows that the following function has been activated: 2 stroke spot procedure.

L32

This LED illuminates to show that the following welding mode is selected: MMA

L33

This LED illuminates to show that the following welding mode is selected: TIG DC CONTINUOUS

L34

This LED illuminates to show that the following welding mode is selected: PULSED DC TIG

L35

This LED illuminates to show that the following welding mode is selected: SYNERGIC PULSED DC TIG

When this is on, it means that the synergic mode is active and that the operator can set just the welding current while

the other parameters are automatically regulated by the machine. The synergy is optimised by angle welding.

L36

This LED illuminates to show that the following welding mode is selected: TIG AC CONTINUOUS

L37

This LED illuminates to show that the following welding mode is selected: PULSED AC TIG

L38

MMA mode: Illumination shows that the following function has been activated: VRD (reduced output voltage).

The no-load voltage between the welding sockets is switched from U0to Ur(see technical data).

L39

PULSED TIG DC mode: Illuminates to show a value in the following unit of measurement: KILOHERTZ

L40

Illuminates to show that a previously saved JOB has been loaded.

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CODE

SYMBOL

DESCRIPTION

Data setting: The display shows the selected parameter.

Welding: The display shows the effective amperes value during welding.

HOLD function: The display shows the average current value measured over the entire welding period (excluding the starting

and ending ramps).

Data setting: The display shows the value of the selected parameter.

Welding: The display shows the effective voltage during welding operations.

HOLD function: The display shows the average voltage value measured over the entire welding period (excluding the starting

and ending ramps).

DC TIG mode: Press the button to select the parameter to be set.

Possible choices: Q-START - DYNAMIC ARC - MULTI TACK

AC TIG mode: Press the button to select the parameter to be set.

Possible choices: MIX AC - EXTRA FUSION - AC FREQUENCY –AC BALANCE - ELECTRODE DIAMETER

Press and release: the button selects the first level menu parameters.

Hold down for 3 seconds: the button opens the second level menu. When in the menu press and release the button to select

the parameters.

Keep the button pressed while powering on the power source: the button opens the SETUP menu.

This button selects the torch trigger procedure.

See § 4.1 page 17.

This button selects the welding mode.

Press and release: the button opens the JOBs upload menu.

Hold down for 3 seconds: the button opens the JOBs save and delete menu.

Data setting: The encoder sets the value of the selected parameter.

Welding: The encoder sets the value of the following parameter: WELDING CURRENT

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3.2 UNIT POWER-UP

Set the welding power source ON/OFF switch to “I” to switch on the unit.

AL. HEA.

The message appears on the following displays: D1-D2

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 presets.

Subsequent power-ups

The welding power source sets up for welding in the latest stable welding configuration that was active at the time of power-off.

3.3 RESET (LOAD FACTORY SETTINGS)

The reset procedure involves complete restoration of the default values, parameters and memory settings set in the factory.

The reset procedure is useful in the following cases:

-Too many changes made to the welding parameters so user finds it difficult to restore defaults.

-Unidentified software problems that prevent the welding power source from functioning correctly.

3.3.1 PARTIAL RESET

The reset procedure involves restoration of the parameter values and settings, except the following settings:

-Settings of the SETUP menu.

-saved JOBS.

Set the welding power source ON/OFF switch to “O” to switch the unit off.

Hold down both buttons simultaneously.

Set the welding power source ON/OFF switch to “I” to switch on the unit.

SIMULTANEOUS ACTIONS

rEC PAr

The message appears on the following displays: D1-D2

Exit without confirmation

Press any button (except S5).

This action will automatically close the menu.

Exit with confirmation

Press the button.

Wait for the memory clear procedure to terminate.

This action will automatically close the menu.

3.3.2 TOTAL RESET

The reset procedure involves complete restoration of the default values, parameters and memory settings set in the factory.

All memory locations will be reset and hence all your personal welding settings will be lost!

Set the welding power source ON/OFF switch to “O” to switch the unit off.

Hold down both buttons simultaneously.

Set the welding power source ON/OFF switch to “I” to switch on the unit.

SIMULTANEOUS ACTIONS

rEC PAr

The message appears on the following displays: D1-D2

Select the following setting with the encoder:

rEC FAC

Exit without confirmation

Press any button (except S5).

This action will automatically close the menu.

Exit with confirmation

Press the button.

Wait for the memory clear procedure to terminate.

This action will automatically close the menu.

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3.4 SET-UP (INITIAL SET-UP OF THE WELDING POWER SOURCE)

Set the welding power source ON/OFF switch to “O” to switch the unit off.

Press the button.

Set the welding power source ON/OFF switch to “I” to switch on the unit.

SIMULTANEOUS ACTIONS

SEt UP

The message appears for a few seconds on the following displays: D1-D2

The acronym relative to the setting to be edited appears on the following displays: D1

The value relative to the selected setting appears on the following displays: D2

Use this button to scroll the settings to edit.

Using the encoder, edit the value of the selected setting.

Exit with confirmation

Press any button (except S2).

This action will automatically close the menu.

Tab. 1 - Setup settings

ACRONYM

SETTING

MIN

DEFAULT

MAX

Coo

COOLER ACTIVATION

oFF

Aut

St.C.

STARTING CURRENT

F.Cu.

FINAL CURRENT

HF.C.

HF CURRENT

20 A

SYn

320 A

PUL.

TYPE OF PULSED CURRENT

SLo.

FA.

P.A.

PILOT ARC

oFF

COOLER ACTIVATION

ON=

The cooler is always running when the power source is switched on. This mode is preferable for heavy duty and automatic welding

procedures.

OFF=

The cooler is always disabled because an air-cooled torch is in use.

AUT=

When the unit is switched on the cooler is switched on for 15 s. During welding procedures the cooler runs constantly. When welding is

terminated the cooler continues to run for 90 s + a number of seconds equivalent to the average current value shown using the HOLD

function.

STARTING CURRENT

The value of this parameter can be set as a percentage of the welding current or as an absolute value expressed in Amperes.

FINAL CURRENT

The value of this parameter can be set as a percentage of the welding current or as an absolute value expressed in Amperes.

HF CURRENT

This parameter establishes the current value during HF discharge. The value of this parameter can be set as an absolute value or in SYN.

With SYN setting the HF current value is calculated automatically on the basis of the preset welding current value.

Consequences of a higher value:

-Arc striking is facilitated, even on very dirty workpieces.

-Risk of piercing excessively thin gauge workpieces.

TYPE OF PULSED CURRENT

SLo.=

This setting enables slow pulsed mode.

FA.=

This setting enables fast pulsed mode.

PILOT ARC

The function enables the output of a low current between the 1st and 2nd times of the torch trigger to shield the mask in advance and avoid the

risk of blinding flashback caused by the welding current.

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3.5 TORCH LOADING

WARNING!

Make sure the torch in use is correctly sized in relation to the welding current required and for the available and selected cooling type. This

prevents the risk of burns to which the operator is potentially exposed, potential faults, and irreversible damage to the torch and the system.

If a torch is installed or replaced while the unit is running, the circuit of the newly installed must be filled with coolant to avoid the risk of damage

to the torch in the case of high voltage arc strikes without any liquid in the circuit.

Power-up with operation of the cooler set to "ON" or "AUT" mode

A check is performed automatically of the presence of liquid in the cooling circuit and the cooler is switched on for 15 seconds.

If the coolant circuit is full, the power source sets up in the most recent stable welding configuration.

If the coolant circuit is not full, all functions are inhibited and there will be no output power present.

AL. Coo.

The message appears on the following displays: D1-D2

(any)

Press the button or torch trigger to repeat the checking procedure for an additional 15 seconds.

If the problem persists rectify the cause of the alarm.

Power-up with operation of the cooler set to "OFF"

Operation of the cooler and the cooler alarm are disabled.

Welding is performed without liquid cooling of the torch.

Torch change-over with operation of the cooler set to "ON"

Press and release the torch trigger.

This serves to start the cooler for 15 seconds to fill the torch cooling circuit.

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3.6 ALARMS MANAGEMENT

This LED illuminates if an incorrect operating condition occurs.

An alarm message appears on the following displays: D1-D2

Tab. 2 - Alarm messages

MESSAGE

MEANING

EVENT

CHECKS

AL. HEA.

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.

All functions disabled.

Exceptions:

-Cooling fan.

-Cooler (if switched on).

-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 specifications.

-Check for the presence of adequate air

circulation around the welding power source.

AL. Coo.

Cooler alarm

Indicates insufficient pressure in the

torch liquid cooling circuit.

All functions disabled.

Exceptions:

-Cooling fan.

The alarm message persists on the display until

the first operation is performed on the user

interface.

Signalling of the alarm depends on the following

settings:

-Coo = on: the alarm is signalled if the cooling

unit is connected to the power source and if it

is running.

-Coo = oFF: the alarm is never signalled,

irrespective of the circumstances.

-Coo = Aut: the alarm is signalled if the

cooling unit is connected to the power source

and if it is running.

-Check that the connection to the cooler is

correct.

-Check that the "O/I" switch is set to "I" and that

it illuminates when the pump is running.

-Check that the cooler is filled with coolant.

-Check that the cooling circuit is liquid tight,

notably the torch hoses and the internal

connections of the cooler.

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4WELDING SETTINGS

4.1 TORCH TRIGGER PROCEDURE

2 STROKE LIFT-ARC WELDING (2T)

Touch the workpiece with the torch electrode.

Press (1T) and keep the torch trigger pressed.

Slowly lift the torch to strike the arc.

The welding current reaches the preset value, by way of a up slope time, if programmed.

Release (2T) the trigger to start the weld completion procedure.

The current reaches the end current value in the time set in the down slope time parameter.

The arc is extinguished.

Gas delivery continues for the time set in the post gas parameter.

2 STROKE WELDING WITH HIGH FREQUENCY ARC STRIKE (2T HF)

Bring the torch up to the work until the electrode tip is approximately 2 or 3 mm away.

Press (1T) and keep the torch trigger pressed.

The arc strikes without contact with the workpiece and the voltage discharges (HF) cease automatically.

The welding current reaches the preset value, by way of a up slope time, if programmed.

Release (2T) the trigger to start the weld completion procedure.

The current reaches the end current value in the time set in the down slope time parameter.

The arc is extinguished.

Gas delivery continues for the time set in the post gas parameter.

4 STROKE LIFT-ARC WELDING (4T)

Touch the workpiece with the torch electrode.

Press (1T) and release (2T) the torch trigger.

Slowly lift the torch to strike the arc.

The welding current reaches the preset value, by way of a up slope time, if programmed.

Press (3T) the trigger and keep it pressed to start the weld completion procedure.

The current reaches the end current value in the time set in the down slope time parameter.

The arc continues and the current output will be the value set in the end current parameter.

In these conditions the weld pool can be closed (crater filler current).

Release (4T) the trigger to extinguish the arc.

Gas delivery continues for the time set in the post gas parameter.

4 STROKE WELDING WITH HIGH FREQUENCY ARC STRIKE (4T HF)

Bring the torch up to the work until the electrode tip is approximately 2 or 3 mm away.

Press (1T) and release (2T) the torch trigger.

The arc strikes without contact with the workpiece and the voltage discharges (HF) cease automatically.

The welding current reaches the preset value, by way of a up slope time, if programmed.

Press (3T) the trigger and keep it pressed to start the weld completion procedure.

The current reaches the end current value in the time set in the down slope time parameter.

The arc continues and the current output will be the value set in the end current parameter.

In these conditions the weld pool can be closed (crater filler current).

Release (4T) the trigger to extinguish the arc.

Gas delivery continues for the time set in the post gas parameter.

4 STROKE B-LEVEL WELDING (4T B-L)

Touch the workpiece with the torch electrode.

Press (1T) and release (2T) the torch trigger.

Slowly lift the torch to strike the arc.

The welding current reaches the preset value, by way of a up slope time, if programmed.

Press and immediately release the torch trigger to switch to the second welding current.

The trigger must not be pressed for more than 0.3 seconds; otherwise, the weld completion stage will start.

When the trigger is pressed and released immediately, the system returns to the welding current.

Press (3T) the trigger and keep it pressed to start the weld completion procedure.

The current reaches the end current value in the time set in the down slope time parameter.

The arc continues and the current output will be the value set in the end current parameter.

In these conditions the weld pool can be closed (crater filler current).

Release (4T) the trigger to extinguish the arc.

Gas delivery continues for the time set in the post gas parameter.

Cod.006.0001.1861

01/09/2014 v2.0

ENGLISH

GLW 322

18/38

4 STROKE B-LEVEL WELDING WITH HIGH FREQUENCY ARC STRIKE (4T B-L HF)