R-Tech TIG315 Manual de Instruções descarregar pdf (Página 8)

-Electrode diameter too large for the preselected

current level.

Note: If themachine is connected to an automatic system,

the ceramic nozzle should be connected to the work-piece

ground with a piece of flexible copper wire.

3- TROUBLE-The tungsten electrode wears rapidly or

contaminates the weld pool.

CAUSES -The current is too high for the electrode dia-

meter.

-In A.C. welding, knob (U) is positioned to the

left i.e. max. cleaning action. (exept item 235)

- If you want to maintain the position selected

with knob (U), increase the electrode diameter.

(exept item 235)

4- TROUBLE-The arc deviates from the weld pool.

CAUSES -in A.C. the electrode is too large for the

the preset current.

-During the down slope phase, this happens

when the current is lower than the electrode

ampere capacity

-Ground clamp not correctly connected

-Using the pulse accessory, the base current is

lower than the electrode Ampere capacity

5- TROUBLE-The machine supplies the maximum output

current but the current cannot be adjusted.

CAUSES -A short circuit in the inductance.

6- TROUBLE-The fan does not work.

CAUSES -Faulty thermostat.

-Faulty fan motor.

9.3 TROUBLE WITH THE ELECTRODE PROCEDURE

1- TROUBLE-The machine does not supply current.

CAUSES -Position selector (C) on

-Device (B) not connected to receptacle (A).

-The thermostat has tripped, light (E) ON

-Welding cables not connected.

2- TROUBLE-The arc starts, then it to switches off.

CAUSES Using basic electrodes:

-Position selector (R) on A.C.

-The electrode holder is connected to the wrong

polarity.

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R-Tech TIG315 Manual de Instruções Página 8