Internal Connections; External Connections; Description Of Controls - Cebora bravo synergic mig 4540/T Manual De Instrucciones

3.2

INTERNAL CONNECTIONS

• Any intervention carried out inside the welding
machine must be performed by qualified personnel.
• Before working inside the welding machine, make sure
that the plug is disconnected from the power mains.
• After final inspection, the welding machine is con-
nected to the voltage indicated on the power supply
cable.
• To change the supply voltage, remove the right side
panel and arrange the voltage change terminal board
connections as shown in the figure 5.
• The supply voltage may not be changed on single-
phase power sources.
• Do not use the welding machine without its cover or
side panels for obvious safety reasons, and to avoid alter-
ing the cooling conditions for internal components.

3.3 EXTERNAL CONNECTIONS

3.3.1 Connecting the mass clip.
• - Connect the earth cable terminal to the socket V of the
welding machine, and connect the earth clamp to the
workpiece.
3.3.2 Cylinder placement and connecting the gas hose
• Position the cylinder on the cylinder holder of the weld-
ing machine, using the straps provided to fasten it to the
rear panel of the machine.
• Periodically check for wear on the straps, and order
replacements if necessary.
• The cylinder must be equipped with a pressure regula-
tor complete with flow gauge.
• Only after positioning the cylinder, connect the outgoing
gas hose from the rear panel of the machine to the pres-
sure regulator.
• Adjust the gas flow to approximately 10/18
liters/minute.

4 DESCRIPTION OF CONTROLS

4.1 CONTROLS ON THE FRONTOF THE MACHINE.
A- Green LED.
Signals that the display H shows the current
HOLD
or voltage value measured during welding.
To display one of the two values, simply press one of the
two selection keys N or O.
B- Green LED.
Signals that the display H shows the pro-
PROGRAM
gram number being used.
10
fig. 5
A
B
BRAVO BRAVO
SYNERGIC SYNERGIC
C
D
G
E
F
0
1
T
V
3 Nº
EN 50199-IEC 60974-1
U
S
MIG-MAG
MADE IN ITALY
Q
R
Check the instructions posted inside the mobile side
panel for the diameter, wire type and gas corresponding
to the program number displayed. The figure on the dis-
play H is always preceded by the letter P.
C- Green LED.
Signals that the welding machine is in 4-
stage automatic mode.
When the LED is off the welding machine is in 2-stage
manual mode. Use the selection keys N and O to select
manual or automatic mode. The display H will show the
message 2t when the machine is in 2-stage manual
mode, or 4t when it is in 4-stage automatic mode.
If the welding machine is set to 2-stage manual mode,
welding begins when the button is pressed, and stops
when it is released.
If the welding machine is set to 4-stage automatic mode,
press the torch trigger to begin welding;
you may release the trigger once the procedure has
begun. Press and release the trigger again to stop weld-
ing. This setting is suitable for long-term welding, where
the welder may tire of holding down the torch trigger.
D - green wire feed test LED.
Signals that the wire feed function is active.
To feed wire simply press the torch trigger
and adjust the output speed using the potentiometer P.
When the LED is lit display H shows the speed in meters
per minute.
While wire is feeding, no gas is output and the power is
shut off.
H
HOLD
PROGRAM
A V
SYNERGIC
5 6
4 7
3 8
2 9
1 10
1
2 3
8 2
7 3 1 4
6 4
5
IP 21C
fig.3
M
L
I
N
O
P
S
V