EWM cool71 U43 Manuel d'utilisateur télécharger pdf (Page 79)

79

AC/DC TIG welding machines

Picotig / Tetrix portable

Accessories for professionals

Remote control with AC parameter setting op-

tion: frequency, balance and welding current

AC frequency

The penetration and weld seam width are also

controlled by AC frequencies between 50 and

200 Hertz

High frequency: narrow seam with deep

penetration

Low frequency: broad weld bead

AC balance

Adjustable balance of the alternating current

proportion

Positive proportion: good cleaning of high-

melting and semiuid oxides when welding

aluminium.

Negative proportion: deep penetration and

long service life of the electrode

Additional dirt lter

For particularly tough sites of operation

(option)

Combine eectively and as

required

z Easy combination of e.g. cooling

unit or transport cart – no

specialist sta or tools required

and no need to open the welding

machine. Innovative and easy to

expand to meet future needs.

Super-fast attachment of cooling

unit

z The unique fastening system

guarantees easy attachment and

detachment. The catches are fully

integrated in the casing so there

is no protrusion and therefore no

risk of injury.

Cooling unit with centrifugal

pump

z Optimal welding torch cooling

Well thought-out: Casing and

cooling air conduction

z Fan control plus blades minimise

dirt in the machine

Modern, ergonomic casing

z The front and rear sections of the

machine are made of shock-resis-

tant plastic with rounded corners

and edges, so the welder and the

machine have the best protection

in any situation.

Operating elements

z Particularly robust, clear and pro-

tected layout – allows especially

easy handling

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