Connection To The Electrical Supply; Gas Connection; Instructions For Use - CEA Compact 270 Manuel D'instructions

Connection to the electrical supply

Connection of the machine to
the user line (electrical current)
must be performed by qualified
personnel.
All connections must be made in
conformity with existing regulations
while fully respecting the accident-
prevention laws (see CEI 26-10
CENELEC HD 427 regulations).
Before connecting the welding
equipment to the mains supply
check that the data on the
machine plate correspond to the
supply voltage and frequency
and that its main switch is on the
"O" position.
These welders can work at different
voltages and are normally supplied
to work at the highest voltage
shown on the data plate. Check that this voltage corresponds
to the mains supply. If not, remove the cover and connect up
the corresponding red or blue wire, according to the mains vol-
tage, as indicated in fig. B. Connection to the mains supply
must be carried out using a quadrupole wire supplied with the
welder, of which:
• three wires the supply;
• the fourth one, yellow-green, to earth.
Connect a suitable plug to the primary cable and fix to a
socket fitted with fuses or automatic switch; the proper
earth terminal must be connected to the earth connector
(yellow-green) of the main supply.
Table 2 indicates the values of current carrying capacity sug-
gested for time dalay fuses chosen in accordance with the
maximum rated welding current supplied by the welding
machine and with the rated mains voltage.
Model
II Max nominal (35%)*
2
Installation power
Rated current of delayed
fuses
U1=220V-230V-240V
U1=380V-400V-415V
Mains supply cable
Length
Section
* Factor of efficiency

Gas connection

The units are supplied with a pressure
reducer complete with pressure gauge for
adjustment of the pressure of the gas used
in welding. The gas cylinders (optional)
must be placed on the rear cylinder-sup-
port platform of the welding machine and
secured with the chain supplied. They
must be installed in a way that does not
interfere with the stability of the welding
machine. The connections between the
gas tank, reducer and gas pipe, from the
back panel of the welder, to be made as
shown in fig. C. Open the gas cyclinder
and regulate the flowmeter to about 8/12
l/min.
ATTENTION: Check that the gas used is
compatible with the material to be welded.
220/230/240 V
Blu-Bleu-Blue-Blau
Rosso-Red-Rouge-Rot
380/400/415 V
Blu-Bleu-Blue-Blau
Rosso-Red-Rouge-Rot
Fig. B
Table 2
COMPACT
270 310
A 250 300
kVA 6,1 8,3
A 16
A 10
m
3,5
2
4x2,5
mm
Fig. C
1
9
1
9
10
360
350
11
25
16
4
4x2,5
9
Fig. D

Instructions for use

COMMAND AND CONTROL UNITS (fig. D-E)
Pos. 1 On/off switch.
Pos. 2 Green LED. This LED lights up when the welder is
powered and ready to work.
Pos. 3 Potentiometer for adjustment of wire speed.
Pos. 4 Welding process switch. It can be set to the following
positions:
• 2 strokes. In position
pressed down throughout the entire welding procedure.
• 4 strokes. In position
then release the torch key to start welding; press again to
stop.
Pos. 5 Potentiometer with switch for regulating the spot wel-
ding time.
Pos. 6 Potentiometer for adjusting BURN-BACK.
Pos. 7 Potentiometer for adjusting motor startup (RAMP). If
motor speed is set to maximum, do not select the
10
3
2
4
8
3
2
4
8
2 3
4
8
the torch key must be kept
you only have to press and
5
6
7
5
6
7
5
6
7