Elettro CF Pro MIG 277 Instruction Manual page 7

Clean using a jet of dry, clean air, being careful to avoid
damaging the machine in any way.
Before working inside the welding machine, make sure it is
unplugged from the power mains.
Any intervention carried out inside the welding
machine must be performed by qualified personnel.
2.2 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
connected to the voltage indicated on the panel
beside 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 picture 3.
• 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 altering
the cooling conditions for internal components.
2.3 EXTERNAL CONNECTIONS
2.3.1 Connecting the mass clip
Connect the earth cable terminal to the socket E of the
welding machine, and connect the earth clamp to the
workpiece.
2.3.2 Cylinder placement and connecting the gas hose
• Position the cylinder on the cylinder holder of the
welding machine, using the chains provided to fasten it
to the rear panel of the machine.
• Periodically check for wear of chains and order
replacements if necessary.
• The cylinder must be equipped with a pressure regulator
complete with flow gauge.
• Only after positioning the cylinder, connect the outgoing
gas hose from the rear panel of the machine to the
pressure regulator.
• Adjust the gas flow to approximately 10/18 liters/minute.
2.3.3 Connecting the wire feeder
This power source works with the wire feeders WF21 and
WF41. The performance and operating options of the wire
feeder are described in the instructions enclosed with the
wire feeder itself.
3 DESCRIPTION OF CONTROLS
3.1 CONTROLS ON THE FRONT OF THE MACHINE
(see pict. 4)
A - Light
Main ON/OFF indicator lamp.
C – Light
Thermostat pilot light.
B - Switch
Turns the machine ON or OFF and select the ranges of
welding voltage.
D – Switch
Fine-tunes the welding voltage within the range previously
selected via selector switch B.
E- Earth socket
Socket to which to connect the earth cable.
3.2 CONTROLS ON GENERATOR REAR PANEL (see
pict. 4)
H – Input supply socket
G - Socket connector.
For the male connector on extension lead.
F - Socket.
For the extension lead power supply connector ('+' pole).
4 WELDING
4.1 INSTALLATION
Make sure that the wire diameter corresponds to the
diameter indicated on the wire feeder roller. Use wire
feeder rollers with a "U"-shaped groove for aluminium
wires, and with a "V"-shaped groove for other wires.
4.2 THE MACHINE IS READY TO WELD
• Connect the earth clamp to the workpiece.
• Set the switch B to 1 or 2 position.
• Remove the gas nozzle.
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