Helvi UNITECH 328, Instruction Manual

Page: 38 / 48

EN-14
“CONSTANT VOLTAGE” FUNCTION
MIG/MAG WELDING MIG WIRE WELDING
Connect the earth cable to the Negative output
terminal (Minus) -
C
- on the front of the unit and
the earth clamp to the workpiece.
Plug the torch hose into the socket -
A
- on the front
of the welder having care to not damage the contacts
and secure by hand screwing in the threaded con-
nection.
Only by models with water cooling: connect the water
feed and return hose of the torch to the water cooling
connections -
G
-.
2T/4T MODE
• Enable the 2T/4T selection mode ( L13 or L14
blinking) through the T3 key.
• Change the mode though the E2 key. Value is
displayed on D2 .
• Press T2 to confirm.
INDUCTANCE
• Enable the inductance setting ( L15 blinking)
though the T3 key.
• Adjust the value through the E2 Knob. Value
is displayed on D2 .
• Press T2 to confirm.
PARAMETERS DISPLAYING
• Change the displaying of the welding para-
meter on D1 and D2 by pressing the T1 key
and choosing the parameter through E1 and
E2 .
• In Synergic MIG mode L1, L2, L3 and
L7, L8, L9 will light up according to the
selected parameter.
• In Manual MIG mode, only wire speed
and welding voltage can be adjusted.
MANUAL MIG WELDING (JOB LIST 10)
The whole UNITECH range is supplied from the
factory in Manual MIG mode (JOB LIST 10).
In this mode, it is only possible to adjust, through
E1 and E2 , the voltage and wire speed values, in
addition to the inductance.
SYNERGIC MIG WELDING (JOB LIST 11-99)
• By holding T1 it is possible to enter the JOB
LIST (Synergic MIG).
• Use E2 to select the desired JOB ( D1 displays
the job description, D2 displays the job num-
ber) and confirm the selection through T2 .
Note: the list of synergic curves can be found inside
the wire spool compartment.
The synergic programs are continuously
updated, also refer to the JOB LIST table on
the machine.
RADID SETUP MENU - MIG
• In MIG mode ( L10 ON) hold the T3 key for 5s
at least to change the parameters (PRE GAS,
SLOPE, BBT and POST GAS.)
• Select the desired parameter through E1 and
change the value through E2 .
Pre Gas:
(from 0 to 10s) DEFAULT value 0.0s
SLoPE:
Wire feeder motor acceleration slope (from
0 to 2.5 s) DEFAULT value 0.0s
bbt:
Burn Back Time (from 1 to 100). DEFAULT value
50
PoST GaS:
(from 0 to 25s) DEFAULT value 3.0s
Table 2
This function is suitable for the special wire feeders
(different from the standard X4 wire feeder) powered
by the power source (Unitech 418-558). Voltage
must be adjusted on the power source according to
the welding wire type and diameter, wire speed on
the wire feeder.
• Hold T5 key for 3s, release the key and hold
it again for other 3s to enable the CV fun-
ction. L23 LED remains ON, D4 displays the
welding voltage that is adjustable through the
E3 knob.
• Press T5 to display the inductance value ( L22
ON). Change the value through
E3 (Value
from 0 to 50). DEFAULT value 25