Stel TIG μP 253H AC/DC Manual De Instrucciones página 49

ENGLISH
TIG µP 253H AC/DC
COD. 6910000030
Procedure for TIG 2 TIME welding with HF start
Starting welding:
1) Press the HF ON button (ref.7 page 9) ; the HF ON led lights up (ref.7A page
9) .
2) Bring the tip of the electrode (tungsten) close to the piece to be welded.
3) Press the torch button: after 0.5 seconds of PRE-GAS, the arc is lit by the HF
generator and the welding process starts .
End of welding:
1) Release the torch button: the current gradually falls with the time set by means
of the SL button (ref.8 page 9); the arc goes out and then there will be the POST-
GAS time set by means of the PG button (ref.10 page 9).
Procedure for TIG 2 TIME welding with LIFT start (without HF)
Starting welding :
1) Check that the HF ON led (ref.7A page 9) is off. If it is not, press the HF ON but-
ton (ref.7 page 9) ; the HF ON led goes off (ref.7A page 9) .
2) Bring the tip of the electrode (tungsten) into contact with the piece to be welded.
3) Press the torch button: after 0.5 seconds of PRE-GAS, lift the torch from the
side so as to move slightly away from the piece to be welded and start the welding
process .
End of welding:
1) Perform the same procedure described for TIG 2 TIME welding with HF start.
- TIG 4 TIME WELDING
1) Press the mode selection button (ref.4 page 9) until the Tig 4T mode led lights
up (ref.4C page 9)
2) For 2 seconds the displays (ref.15-16 page 9) will show the letters tig 4t.
3) Regulating the welding current – proceed as described for TIG 2 TIME welding.
4) Regulating the slope down – proceed as described for TIG 2 TIME welding.
Note: when the slope down is regulated, a slope up with 1/4 value of the set time is
automatically set.
5) Regulating the Final Current –When the FC button is pressed (ref.14 page 9),
the left-hand display V (ref.20 page 9) will start to blink, indicating the value that
can be selected with the encoder (ref.5 page 9) from 10% to 90% of the welding
current A .
STEL s.r.l. – Via del Progresso n° 59 – 36020
Loc. Castegnero (VICENZA) - ITALY
TEL. +39 444 639525 (central.) – +39 444 639682 (comm.)
FAX +39 444 639641 – E-mail:stelgroup.com
http: www.stelgroup.it
TECHNICAL DESCRIPTION
49
ENGLISH
TIG µP 253H AC/DC
COD. 6910000030
Procedure for TIG 2 TIME welding with HF start
Starting welding:
1) Press the HF ON button (ref.7 page 9) ; the HF ON led lights up (ref.7A page
9) .
2) Bring the tip of the electrode (tungsten) close to the piece to be welded.
3) Press the torch button: after 0.5 seconds of PRE-GAS, the arc is lit by the HF
generator and the welding process starts .
End of welding:
1) Release the torch button: the current gradually falls with the time set by means
of the SL button (ref.8 page 9); the arc goes out and then there will be the POST-
GAS time set by means of the PG button (ref.10 page 9).
Procedure for TIG 2 TIME welding with LIFT start (without HF)
Starting welding :
1) Check that the HF ON led (ref.7A page 9) is off. If it is not, press the HF ON but-
ton (ref.7 page 9) ; the HF ON led goes off (ref.7A page 9) .
2) Bring the tip of the electrode (tungsten) into contact with the piece to be welded.
3) Press the torch button: after 0.5 seconds of PRE-GAS, lift the torch from the
side so as to move slightly away from the piece to be welded and start the welding
process .
End of welding:
1) Perform the same procedure described for TIG 2 TIME welding with HF start.
- TIG 4 TIME WELDING
1) Press the mode selection button (ref.4 page 9) until the Tig 4T mode led lights
up (ref.4C page 9)
2) For 2 seconds the displays (ref.15-16 page 9) will show the letters tig 4t.
3) Regulating the welding current – proceed as described for TIG 2 TIME welding.
4) Regulating the slope down – proceed as described for TIG 2 TIME welding.
Note: when the slope down is regulated, a slope up with 1/4 value of the set time is
automatically set.
5) Regulating the Final Current –When the FC button is pressed (ref.14 page 9),
the left-hand display V (ref.20 page 9) will start to blink, indicating the value that
can be selected with the encoder (ref.5 page 9) from 10% to 90% of the welding
current A .
STEL s.r.l. – Via del Progresso n° 59 – 36020
Loc. Castegnero (VICENZA) - ITALY
TEL. +39 444 639525 (central.) – +39 444 639682 (comm.)
FAX +39 444 639641 – E-mail:stelgroup.com
http: www.stelgroup.it
TECHNICAL DESCRIPTION
49