Manual Telwin ARTIKA 222 (page 5 of 72) (All languages)

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(indispensable for technical assistance, requesting spare parts, For welders with double voltage supply, it is necessary to set the

discovering product origin). blocking screw of the voltage-reverse switch in the position corre

7- Performance of the welding circuit:

sponding to the voltage really available (see example below).

- U : maximum no-load voltage (open welding circuit).

Fig. G

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- I /U : current and corresponding normalised voltage that the

2 2

welding machine can supply during welding.

WARNING! Failure to observe the above rules will make the

- X : Duty cycle: indicates the time for which the welding machine

(Class 1) safety system installed by the manufacturer ineffective

can supply the corresponding current (same column). It is

with consequent serious risks to persons (e.g. electric shock) and

expressed as %, based on a 10 min. cycle (e.g. 60% = 6 minutes

objects (e.g. fire).

working, 4 minutes pause, and so on).

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If the usage factors (on the plate, referring to a 40°C

environment) are exceeded, the thermal safeguard will trigger

CONNECTION OF THE WELDING CABLES

(the welding machine will remain in stand-by until its temperature

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returns within the allowed limits).

- A/V-A/V: shows the range of adjustment for the welding current

WARNING! BEFORE MAKING THE FOLLOWING

(minimum-maximum) at the corresponding arc voltage.

8- Technical specifications for power supply line:

CONNECTIONS MAKE SURE THE WELDING MACHINE IS

- U : Alternating voltage and power supply frequency of welding

SWITCHED OFF AND DISCONNECTED FROM THE POWER

machine (allowed limit ±10%):

SUPPLY OUTLET.

- I : Maximum current absorbed by the line.

1 max

Table (TAB. 1) gives the recommended values for the welding cables (in

- I : Effective current supplied.

mm ) depending on the maximum current supplied by the welding

1eff

9- :

machine.

Size of delayed action fuses to be used to protect the

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power line.

10- Symbols referring to safety regulations, whose meaning is given in

AC Versions:

chapter 1 “General safety considerations for arc welding”.

Connecting the electrode-holder clamp welding cable

On the end take a special terminal that is used to close the uncovered

Note: The data plate shown above is an example to give the meaning of

part of the electrode.

the symbols and numbers; the exact values of technical data for the

For welding machines supplied with a terminal, this cable is connected

welding machine in your possession must be checked directly on the

data plate of the welding machine itself.

to the terminal with the symbol .

OTHER TECHNICAL DATA

Connecting the welding current return cable

This is connected to the piece being welded or to the metal bench

- WELDING MACHINE: see table (TAB.1)

supporting it, as close as possible to the join being made. For welding

- ELECTRODE HOLDER CLAMP: see table (TAB. 2)

machines supplied with a terminal, the cable is connected to the

terminal with the symbol .

4. DESCRIPTION OF THE WELDING MACHINE

Control, regulation and connection devices

AC/DC Versions:

Fig. B

Almost all coated electrodes are connected to the positive pole (+) of

the power source; as an exception to the negative pole (-) for acid

5. INSTALLATION

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coated electrodes.

WELDING OPERATIONS WITH DIRECT CURRENT

WARNING! CARRY OUT ALL INSTALLATION OPERATIONS

AND ELECTRICAL CONNECTIONS WITH THE WELDING MACHINE

Connecting the electrode-holder clamp welding cable

COMPLETELY SWITCHED OFF AND DISCONNECTED FROM THE

On the end take a special terminal that is used to close the uncovered

POWER SUPPLY OUTLET.

part of the electrode.

THE ELECTRICAL CONNECTIONS MUST BE MADE ONLY AND

This cable is connected to the terminal with the symbol (+).

EXCLUSIVELY BY AUTHORISED OR QUALIFIED PERSONNEL.

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Connecting the welding current return cable

This is connected to the piece being welded or to the metal bench

PREPARATION

supporting it, as close as possible to the join being made.

Fig. C

This cable is connected to the terminal with the symbol (-).

Unpack the welding machine, assemble the separate parts contained in

the package.

WELDING OPERATIONS WITH ALTERNATING CURRENT:

Assembling the return cable-clamp

Fig. D

Electrode-holder clamp cable and earth cable to either of the related

terminals ( ~ / ~ ).

Assembling the welding cable-electrode holder clamp

TAKE THE GREATEST CARE TO CONNECT THE WELDING CABLES

Fig. E

CORRECTLY e.g. ( - ) / ~ or (+) / ~ ).

HOW TO LIFT THE WELDING MACHINE

Warnings:

The welding machine MUST be lifted as shown in Fig. F(only for the

- Turn the welding cable connectors right down into the quick

model I = 350A). For all other welding machines never use the

2 max

connections (if present), to ensure a perfect electrical contact;

handle for lifting.

otherwise the connectors themselves will overheat, resulting in

This holds for the first time the welding machine is installed and

their rapid deterioration and loss of efficiency.

throughout its entire working life.

- The welding cables should be as short as possible.

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- Do not use metal structures which are not part of the workpiece to

substitute the return cable of the welding current: this could

WARNING! Position the welding machine on a flat surface

jeopardise safety and result in poor welding.

with sufficient carrying capacity for its weight, to prevent it from

tipping or moving hazardously.

6. WELDING: DESCRIPTION OF THE PROCEDURE

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AC Versions:

These welding machines consist of a single phase drooping-type

CONNECTION TO THE MAIN POWER SUPPLY

transformer and are suitable for welding in alternating current with

- Before making any electrical connection, make sure the rating data

coated electrodes (E43R type).

of the welding machine correspond to the mains voltage and

AC/DC Versions:

frequency available at the place of installation.

These welding machines are power sources for mixed current (direct

- The welding machine should only be connected to a power supply

and alternating), which can be selected using the welding terminals,

system with the neutral conductor connected to earth.

and are suitable for arc welding using electrodes with various types of

- To comply with the requirements of the EN 61000-3-11 (Flicker)

coating (rutile, acid, basic).

standard we recommend connecting the welding machine to

To switch on the welding machine operate the main switch (Fig. B (1)).

interface points of the power supply that have an impedance of less

The intensity of the supplied welding current can be adjusted

than Zmax =0.06 ohm.

continuously, by means of a manually operated magnetic shunt (Fig. B

- the welding machine falls within the requisites of IEC/EN 61000-3-12

(4)). The value for the current setting, (I ) can be read in amps on the

standard.

graduated scale (Fig.B (2)) on the top or front panel. The

corresponding arc voltage (U ) for the current shown is given according

PLUG AND OUTLET

to the following relationship: U = (20 + 0,04 I ) V (EN 60974).

2 2

Connect a normalised plug (2P + T, 3P + T) having sufficient capacity- to

the power cable and prepare a mains outlet fitted with fuses or an

THERMOSTATIC PROTECTION

automatic circuit-breaker; the special earth terminal should be

This welder is automatically protected from thermic overheating

connected to the earth conductor (yellow-green) of the power supply

(thermostat automatic re-start). When the windings reach performance

line. Table (TAB.1) shows the recommended delayed fuse sizes in

temperature, the protections cut off the supply circuit, igniting the yellow

amps, chosen according to the max. nominal current supplied by the

lamp on the front panel (Fig. B (3)). After a few minutes’ cooling the

welding machine, and the nominal voltage of the main power supply.

protection will reopen the supply line and turn off the yellow lamp. The

- 5 -

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Telwin ARTIKA 222 Manual

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