CEA MATRIX 250 AC/DC Manual De Instrucciones página 18

Usage norms
CONTROL APPARATUS (fig. A)
Pos. 1 Supply switch. In the "O" position the welder is off
Pos. 2 Welder cable
Pos. 3 Weld gas inlet coupling
Pos. 4 Power connector for cooling system
Pos. 5 Fast coupling reverse polarity
Pos. 6 TIG weld auxiliary control connector (torch button,
remote control pedal, etc.)
Pos. 7 Fast coupling TIG torch gas tube
Pos. 8 Fast coupling straight polarity
Fig. A
FRONT PANEL (fig. B)
Pos. 1 "Weld mode" button: 2 STROKE, 4 STROKE, CYCLE,
SPOT-WELD
Pos. 2 "Weld process" button: TIG AC with HF arc strike,
TIG DC with HF arc strike, TIG with "lift" type arc
strike, ELECTRODE
Pos. 3 Digital display for pre-setting and visualizing all the
parameters. The display also acts as a digital amper-
ometer
Pos. 4 Digital adjustment/control for all weld parameters
Pos. 5 EASY PULSE, ON PULSE (fast), ON PULSE (slow)
switch
Pos. 6 SAVE button to be used for saving welding programs
and parameters
Pos. 7 PROG button to be used for calling welding pro-
grams and parameters up
Pos. 8 POST GAS red led function
Pos. 9 Red led FINAL CURRENT function
Pos. 10 Red led SLOPE DOWN function
Pos. 11 Red led PEAK CURRENT (I
with PULSE function on
Pos. 12 Red led PULSATION FREQUENCY (f) function - only
works with PULSE function on
Pos. 13 Red led BASIC CURRENT (I
with PULSE function on
nd
Pos. 14 RED LED 2 LEVEL CURRENT (I
works with CYCLE function on
1
2
4
3
5
6
7
8
) function - only works
p
) function - only work
b
) function, only
2
Pos. 15 GREEN LED MAIN CURRENT (l
Pos. 16 Red led SLOPE UP function
Pos. 17 Red led INITIAL CURRENT function
Pos. 18 Red led PRE-GAS function
Pos. 19 Red led for ARC FORCE function
Pos. 20 SET button to be used for selecting welding parame-
ters
Pos. 21 Red led for HOT START function
Pos. 22 "Wave" button to be used for selecting SQUARE,
SINUS and MIXED wave.
Pos. 23 "Electrode diameter" button, to be used for selecting
the electrode diameter, for a better control of arc
stricking in AC.
Pos. 24 "Balance and Frequency" button, to be used for
selecting alternating current balance and frequency.
23
3
2
1
19
21
17
Fig. B
20 18
Connection of the welding cables
ELECTRODE WELDING (MMA) (fig. C)
With the machine disconnected from the supply, connect the
welding cables to the out terminals (positive and negative) of
the welder, connecting them to the gripper and the earth, with
the correct polarity provided for the type of electrode to be
used (Fig. C).
Choosing the indications supplied by the electrode manufac-
turer, the welding cables must be as short as possible, close to
one other, and positioned at floor level or close to it.
PART TO BE WELDED
The part to be welded must always be connected to earth in
order to reduce electromagnetic emission. Much attention
must be afforded so that the earth connection of the part to be
welded does not increase the risk of accident to the user or the
risk of damage to other electric equipment.
When it is necessary to connect the part to be welded to earth,
you should make a direct connection between the part and the
earth shaft. In those countries in which such a connection is
not allowed, connect the part to be welded to earth using suit-
able capacitors, in compliance with the national regulations.
18
) function
1
24
4
11 9
15 13
10 8
16 14 12
22
5
6
7