16
CONTACT IGNITION - LAMP (8) IS OFF
The welding process is initiated by pressing (and releasing) a control button
on the grip. When the button is pressed the gas valve is opened. After
releasing the button
(while welding don't hold the button pressed!)
you
can ignite the arc by touching the workpiece and slightly lifting an electrode
(the arc ignition occurs at the moment of lifting an electrode).
SPARK IGNITION - LAMP (8) IS ON
The welding process is initiated by pressing a control button on the grip.
When the button is pressed the gas valve is opened. Releasing the button
starts the ionizer - spark-over between an electrode and a workpiece
should initiate ignition of the arc. If ignition of the arc does not occur within
2.5s ionizer is turned off and ignition process must be repeated.
8) After the welding is completed, the rectifier should be left connected to the
mains for some time (approx. 3 minutes). This is recommended for cooling
down the heated components.
9) If during welding, the rectifier has been overloaded by exceeding the
permitted duty cycle of 60% at currents given in Table 1, the temperature
limiter can operate. This cuts-off the welding current and lights up the
indicator (4) (Fig. 1). In such case wait until this indicator turns off, and
then you can continue the welding.
7. MAINTENANCE
CAUTION: Before performing any inspection and maintenance unplug
the power cord from the mains.
7.1 ONGOING MAINTENANCE
1) Check the condition of the power cord and insulation of welding cables.
Any damages should be fixed immediately.
2) Ensure that welding cables connections, the electric clamp and isolated
jaws of the welding holder are operational. Any worn or damaged parts
should be replaced.
7.2 PERIODIC MAINTENANCE
Depending on the operating conditions of rectifier but not less frequently than
once every three months, proceed with the following:
1) remove any dust from the internal and external parts using a soft brush
and a vacuum cleaner or compressed air under pressure of ca. 3bar.
2) check the condition and electrical connections, including cables connected
to the protective terminal. All connections should be correct.
3) check if all bolts are firmly tightened.
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