Mma Operation - Cebora Power Tig 1540 DC-HF Service Manual

CEBORA S.p.A.
Press the start button and hold it down for approximately 5 seconds.
♦ The pre-gas phase begins; the high frequency is then generated to start the arc, as
well as the power source output voltage.
♦ After approximately two seconds, the output voltage and high frequency to start
the arc are no longer generated, and the post-gas phase begins (TIG operation with
HF stops if there is no current at the power source output after start-up).
Move the torch near the workpiece and press the torch trigger.
♦ Begin welding. Turn the knob (H) or the torch potentiometer to obtain the current
level suitable for the type of welding to be done.
Release the torch start button.
♦ The arc shuts off immediately (if long ramp times are not set (slope down)). Gas
continues to flow for the post-gas time.

3.2.4 - MMA operation.

Switch-off the power source through switch (6).
Connect the electrode clamp to the positive pole (Q) of the power source.
Connect the cable of the negative pole (P) of the power source to the workpiece.
Switch-on the power source, closing the switch (6).
After the lamp-test, use the button (A) to select the MMA "Process", led (F) lit.
♦ Voltage begins to be generated at the power source output.
Use the knob (H) or the remote unit potentiometer to set the current based on the electrode
you intend to use.
Move the electrode clip near the workpiece.
♦ Begin welding. Adjust the knob (H) or the remote unit potentiometer to maximize
the welding quality.
3.302.212
Correct?
YES
Correct?
YES
Correct?
YES
REGULAR OPERATION.
Correct?
YES
Correct?
YES
REGULAR OPERATION.
NO (see 3.3.6, 3.3.7).
NO (see 3.3.8, 3.3.9).
NO (see 3.3.5).
NO (see 3.3.7).
NO (see 3.3.8).
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12/01/06