Connection To The Power Mains; Welding Gas Connection - Helvi COMPACT 300 Manuel D'instructions

INSTALLATION
UNPACKING
This electric appliance comes in a cardboard
box, complete with power cable (without a
plug), gas tube (without a connector) and a
use and maintenance booklet.
• Remove the welding generator from its
packaging and make sure it has not been
damaged during transportation. In case of
doubt, contact your supplier or our assistan-
ce center.
• Make sure the material you have received
corresponds to what you have ordered. The
packaging can be recycled.
SERIAL NUMBER
The serial number of the appliance is prin-
ted on the data plate of the generator. This
number identifies the product you have pur-
chased and must be provided when ordering
spare parts.
POSITIONING
• Place the appliance on a stable, dry base
and make sure that no dust from the base is
sucked by the fan.
• The generator must be placed far from the
trajectory of any particles released from mil-
ling operations.
• The generator must be placed at least 20
cm away from any obstacles (including walls)
so as not to limit the efficiency of the fan.
• The room temperature during work must re-
main between -10 and +40°C.
• Protect the machine against heavy rain and
direct exposure to sunlight.
Warning: Machine stability is ensured
for a maximum inclination of 15°.

CONNECTION TO THE POWER MAINS

The good functioning of the generator is en-
sured by its proper electric connection to the
power mains, which must be carried out by
experienced personnel and fully respecting
the current regulations regarding the installa-
tion of industrial electric appliances.
For relevant information regarding the cha-
racteristics required for the power distribution
system, please read the relative paragraph in
26
this document.
The supply voltage of these generators is
400Vac +/-10% – 3Ph – 50/60Hz. If the po-
wer grid corresponds to these values and is
calibrated according to the maximum con-
sumption of the generators (please see the
tables with technical information), simply con-
nect the power cable to a three-pole plug +
earth of suitable capacity and insert it in the
distribution socket.
• Do not use the current generators with ca-
ble extensions exceeding 25 meters and with
less than 6 mm² of diameter.
• The power cable must not be allowed to coil
or tangle. It must remain away from sources
of heat, oil, and solvents and protected from
crushing (risk of electric shock).
• The power cable contains power voltage
(400 Vac); it therefore must be periodically
inspected and replaced when deteriorated.
Warning: The yellow/green cable must
be fixed to the earth pin in such a man-
ner that, in case of power cable ruptures,
this is the last one to yield. This will en-
sure that the generator is earthed.

WELDING GAS CONNECTION

The protection gas of the electric arc on these
generators is only used during welding with
infusible electrode (TIG). It is not required du-
ring welding with coated electrodes (MMA).
Warning: The gas cylinder must be fixed
in place with a safety belt.
• Do not forget to slightly open and then close
the tap of the cylinder to eliminate any impurities.
• Assemble the pressure regulator on the
cylinder, after making sure that the gas flow
regulation knob is loose.
• Make sure the connector is tightened before
opening the cylinder tap.
• Assemble the connection on the gas tube of
the generator and the gas tube to the exit of
the pressure regulator.
• Slowly open the cylinder tap. During welding,
gas flow is a function of the parameters and ac-
cessories of the welding. The regulation range
is normally between 5 and 15 liters per meter.
Note: Additional information on how to work
safely with gas, please carefully read the PRO-
TECTION GAS paragraph of this document.