Bedienungsanleitung Metabo WIG 170 DC (Seite 11 von 60) (Deutsch, Englisch, Holländisch, Dänisch, Französisch, Italienisch, Spanisch, Schwedisch, Norwegisch)

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4.1 Placing the machine

Caution!

Always stand machine on its

feet only.

The machine draws in air at its front

and bottom, which is given off

through the ventilating slots at the

rear. Ensure an unhindered airflow.

The distance of the machine to walls

or other equipment must be at least

20 cm/8".

4.2 Other connectors

Caution!

When connecting the welding

cables observe the required polarity

for the desired welding process and

electrodes to be used.

Stick electrode welding

Prior to initial start-up:

1. Connect welding return cable to -

pole.

2. Connect welding cable to + pole.

Gas-shielded arc welding

Prior to initial start-up:

1. Connect reinforced pressure hose to

pressure regulator.

2. Connect welding return cable to +

pole.

3. Connect TIG torch welding current

cable to - pole.

4. Connect TIG torch pilot lead.

5. Connect TIG torch gas line.

All machine functions are controlled by

the four buttons Mode, +, - and Parame-

ter at the front panel. Any invalid actua-

tion of a button is indicated on the LED

display by 3 bars (---).

After turning ON all LEDs will illuminate

briefly. The display shows

− briefly the software version in the

format X.X, then

− the most recently set welding cur-

rent.

Condition:

the selftest was completed succes-

fully.

Note:

Operating modes and parame-

ters can only be changed if no welding

process is active.

An exeption is the parameter welding

current. This value can be changed

while welding.

5.1 Operating modes

To select, press the Mode button as

often as necessary, until the LED indi-

cating the desired operating mode is lit.

2T + HF

Operating mode for TIG welding in 2-

step mode with HF-ignition.

− Press button of TIG torch (Start/

Stop button).

The welding process starts at the

fixed starting current.

− After ignition the current slopes

up to the preset welding current

within the preset up^slope time.

− Release Start/Stop button.

The welding process ends after the

preset downslope time.

4T + HF

Operating mode for TIG welding in 4-

step mode with HF-ignition.

− Press button of TIG torch (Start/

Stop button).

The welding process starts.

− As long as the Start/Stop button

is held down the arc is burning at

the fixed starting current.

− After releasing the pushbutton,

the current slopes up to the pre-

set welding current within the pre-

set upslope time.

− Press button again.

The welding current falls down to

the preset end current within the

preset downslope time.

− While the button is pressed the

arc continues to burn at the end

current (crater filling).

− Releasing the button ends the

welding process.

Stick electrode welding

Operating mode for stick electrode weld-

ing with integrated Hot-start and Anti-

stick function.

Stick electrode welding with Arc-

force.

Stick electrode welding mode, but with

additional Arc-force function.

During the welding process the machine

keeps the energy (heat) brought into the

weld metal at a constant level, even if

the distance between electrode and

weld pool varies.

Note:

For stick electrode welding the

machine uses always both the Hot-start

and Anti-stick function.

Hot-start function

When contacting the weld metal with the

electrode, the set welding current is

increased for a short period to ensure the

arc will start.

The brief increase of the welding current is

limited to the maximum electrode current.

Anti-stick function

If the machine detects a short-circuit in

the welding process, it will switch after

0.5 second to minimum current to pre-

vent electrode burn-out.

5.2 Parameters

Press the Parameter button repeatedly,

until the LED of the desired parameter is

lit. The value currently set for this parame-

ter is immediately shown on the display.

Using the + and - buttons the current

parameter value is changed. The dis-

played values are immediately adopted

by the control. A confirmation of the

input is not required.

27 Fault indicator

− LED lid:

Machine has detected a

fault and shuts down.

28 Excess temperature indicator

− LED illuminated:

Excess temperature fuse

tripped and control disa-

bled.

29 Master switch

Switches unit ON or OFF

30 Socket for remote control unit

31 Gas supply connector

32 Power supply cable

LED = Light-Emitting Diode, used as

indicator light.

4. Preparing for Operation

>20 cm

5. Operation

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