CEA Matrix 250 HF Bedienungsanleitung Seite 19

• The GREEN LIGHT I is on
1
5) It is now ready for welding
6) The digital display visualizes effective current
used during welding
TIG WELDING
1) Start up the welder by turning the main switch to position
I
2) Press the "weld process" button and set on:
• TIG "HF" for TIG weld with high frequency arc
strike
• TIG "lift" for TIG weld on direct current with-
out high frequency arc strike
ATTENTION: The correct "lift" type arc strike is only obtained
by pressing the torch button after touching the piece to be
welded with the electrode beforehand.
3) Press the "weld mode" button and set on one of the 4
options available:
• 2 STROKE
Press the torch button to perform the welding
cycle starting from INITIAL CURRENT (if a
SLOPE UP is set) and release it to terminate
welding at FINAL CURRENT (if a SLOPE
DOWN is set).
• 4 STROKE
TIG welding is done as follows:
A) Pressing the torch button strikes up the arc
and the current stays at the INITIAL value
B) Peleasing the torch button will start the
SLOPE UP (if present) and the PRINCIPAL
CURRENT will take itself to value I
C) Pressing the torch button will start the
SLOPE DOWN (if present) and the current
will take itself to the FINAL value (crater
current)
D) Releasing the button will finish the weld
cycle.
OR
1
• CYCLE
TIG welding is done as follows with this func-
tion on:
• pressing the torch button will strike up the
arc and the current stays at the INITIAL
value
• releasing the torch button will start the
SLOPE UP (if present) and the current will
take itself to the value (I
• pressing and releasing the torch button for
less than 1 second, the weld current will
take itself to the CYCLE (I
possible to move an infinite number of times
between the two current levels (I
repeating this operation
• pressing the torch button and keeping it
pressed down (for more than 2 seconds) will
start the SLOPE DOWN (if present) and the
current will take itself to the FINAL value
(crater current)
• releasing the torch button will finish the weld
cycle
• SPOT-WELDING
Spot-welding can be done for the set time (in
seconds) by pressing the torch button after
which the arc will automatically switch off
4) The following weld parameters can be set by
pressing the SET button repeatedly
PRE-GAS time (0,05 ÷ 1 sec)
INITIAL weld CURRENT (5 ÷ 250 A)
ATTENTION: only programmable with 4 STROKE or CYCLE
functions on
SLOPE UP time (0,0 ÷ 5,0 sec)
PRINCIPAL weld CURRENT I
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)
1
) value; it will be
2
, I ) by
1 2
(5 ÷ 250 A)
1