Instruction manual

17
-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.