Bedienungsanleitung Metabo WIG 170 DC (Seite 12 von 60) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Spanisch, Schwedisch, Norwegisch)

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Welding current I

Maximum current for the actual welding

process.

Setting range, in 1 A increments

- for TIG welding: 5 A…170 A

- for stick electrode welding: 5…140 A.

Note:

During the welding process the

current nominal welding current value is

displayed.

If an upslope or downslope value other

than 0 is set, the value displayed on the

display changes continously when start-

ing and ending the welding process, until

the end value is reached. Simultane-

ously the LED of the respective active

parameter is flashing during this time.

The welding current can be changed

anytime during the welding process with

the + or - buttons.

Note:

If a foot-operated remote control

unit is connected, the machine will

always switch into 2-step mode.

When a hand-operated remote control

unit is connected, the working current

can only changed by this control.

Current setting range foot-operated

remote control unit: minimum current to

set working current.

Current setting range hand-operated

remote control unit: minimum current to

maximum current.

Upslope

Speed at which the current slopes up to

the maximum welding current. This

value can only be changed in any of the

TIG welding modes.

Setting range 0…100.

The ramp response adjusts linear.

At a value of 0 the nominal value is out-

put directly, e.g.for spot welding.

At a value of 100 the welding current

slopes up at approx. 8 A/sec, until the

nominal current is reached. At a value of

50 it slopes up twice as fast at 16 A/sec.

Downslope

Speed at which the current slopes down

to the minimum welding current. This

value can only be changed in any of the

TIG welding modes.

Setting range 0…100.

The ramp response adjusts linear, see

“Upslope”.

Gas postflow time t.

Period the shielding gas will flow after

the welding process has ended.

This value can only be changed in any of

the TIG welding modes.

Setting range 0.0…25.0 sec, in incre-

ments of 0.2 seconds.

5.3 Starting up

Gas-shielded arc welding

Caution!

Check before starting any

work:

− Correct shielding gas connected?

− Correct gas shroud fitted?

− Electrode tip still pointed?

Regrind if necessary.

Note:

Grind electrodes for DC welding

in lengthwise direction only.

1. Attach welding return cable at a suit-

able location to the workpiece.

2. Open cylinder valve and set desired

gas flow rate.

Change gas shroud, if necessary.

3. Turn master switch ON.

4. Select desired welding process.

5. Set desired welding current.

The welding machine is now opera-

tional.

Stick electrode welding

1. Attach welding return cable at a suit-

able location to the workpiece.

2. Turn main switch ON.

3. Select welding process “Electrode”.

4. Set desired welding current.

The welding machine is now opera-

tional.

5.4 Shutting down

1. Close gas cylinder valve.

2. Set master switch to “0”.

3. Disconnect welding return cable

from workpiece.

4. Unplug power cable.

5.5 General safety informa-

tion

All legal regulations pertaining to the

operation of electric arc welding

machines must be observed.

The following information should be

observed as well for a safe and risk-free

handling of the welding machine!

Danger!

Electric potential!

− Use machine indoors and in dry

environment only.

− Connect machine only to a properly

earthed outlet.

If in doubt check with a qualified

electrician!

− Service and repairs to the machines

must only be made by qualified elec-

tricians.

− Unplug before removing the

machine's cover.

Danger!

− Wear sufficient protective clothing

when welding.

− Always use a welding shield or hel-

met and welder's gloves.

They provide protection against

sparks and arc radiation.

− All metal fumes are detrimental to

health!

When working indoors ensure suffi-

cient ventilation and extraction in

order to not exceed the maximum

permissible workplace pollutant con-

centration.

Fumes of lead, cadmium, copper,

zinc and beryllium are especially

harmful!

Caution!

− Never weld earthed metal.

This will prevent possible damage to

the protective earth conductors by

stray welding currents.

− Always attach the welding return

cable directly to the workpiece and

as close as possible to the welding

spot.

− Special care is required when work-

ing near computers, electronically

controlled equipment or in the prox-

imity of magnetic data media (sound

recording tapes, floppy disks, data

recording tapes, credit cards, etc.).

The arc start can cause misfunction

of this type of equipment or data

loss.

This welding machine contains no user-

serviceable parts.

Depending on dust accumulation the

dust should be blown out from the

machine with dry and oil-free com-

pressed air every 4 - 6 months.

Periodically perform a check for visible

damage.

Contact a qualified electrician if any of

the cables are damaged.

For the WIG 170 DC series we recom-

mend the following accessories. These

accessories have been tested with the

machine and ensure unproblematic

operation.

A TIG torch Mistral,

1) 4 m torch leads

2) 8 m torch leads

B Pressure regulator with 2 pressure

gauges

1) without stop valve

2) with stop valve

6. Maintenance

7. Available Accessories

Metabo WIG 170 DC Seite 12

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