Selco Genesis 164 TLH/LIFT Instrucciones De Uso página 16

The contents of this chapter are of vital importance and the-
refore necessary for operation of the warranties. The manu-
facturer accepts no liability if the operator fails to observe
the above precautions and instructions.
4.0 MACHINE DESCRIPTION
These constant current inverter power sources are able to per-
form the following types of welding with excellent results:
- MMA ;
- TIG with remote arc striking by high frequency (TIG HF-
START) and control of the gas supply by the torch button
(Genesis 164 TLH);
- TIG with contact ignition with reduction of short circuit cur-
rent (TIG LIFT-START) and control of gas delivery by means of
torch button (Genesis 164 LIFT).
In inverter welders, the output current is unaffected by va-
riations in the supply voltage and the length of the arc, and is
perfectly levelled, giving the best welding quality.
The generator is equipped with:
- positive (+) and negative (-) socket
- front panel,
- rear control panel
- a fitting for the torch button connector
- a gas socket for the torch
- a gas coupling on the rear side of the welding power source
for the connection with the gas cylinder.
A complete male connector is also supplied for the wires of the
torch on the front panel.
4.1 Front control panel (Fig.1)
*
L1 : Voltage warning light green led.
Comes on with the start switch (Fig.2) "I1" in position "I" and
indicates that the plant is on and there is voltage.
*
L2 : Safety device warning light yellow led.
lndicates that the safety devices like thermal cutout.
With "L2" on, the power source remains connected to the
supply mains, but does not supply output power.
"L2" remains on until the fault has been removed and in any
case until the inner temperatures are not within the normal
values; in this case it is necessary to leave the power source
on to exploit the operating ventilator and reduce the time
when it is not active.
*
L3 : Voltage output warning light (work) red led.
Indicates the presence of output voltage.
*
P1: Potentiometer for setting the welding current
Allows you to continuously adjust the current both in TIG and
in MMA welding. This current stays unchanged when the
supply and welding conditions vary within the allowed ranges.
In MMA welding, the presence of HOT-START and ARC-
FORCE means that the average output current may be
higher than that set.
* P2: Potentiometer for setting the PULSE FREQUENCY in
TIG welding and the ARC-FORCE in MMA welding .
Turning clockwise in MMA welding it sets from 0% to 100%
the further welding current added to the welding current
when there is a short-circuit between the electrode and the
welding pool (ARC-FORCE).
Turning clockwise in pulsed and MF (medium frequency) pul-
sed TIG welding it sets the frequency of the pulsation from the
minimum to the maximum value.
16
* P3: Potentiometer for setting the DOWN-SLOPE time in
TIG welding and the HOT-START current in MMA welding.
Turning clockwise in MMA welding it sets from 0% to 100%
the further amount of current that the power source adds to
the welding current when the arc strikes (HOT-START).
Turning clockwise in TIG welding it sets from 0s to 10s the
DOWN-SLOPE time of the welding current.
* S1: MMA/TIG 2-time/TIG 4-time selection switch.
With the lever up it is in MMA welding mode,P2 sets the
ARC-FORCE, P3 sets the HOT-START, the ANTI-STICKING is
automatically activated.
With the lever in the middle position it is in Tungsten Inert
Gas (TIG) welding and the control of welding process is made
with the torch button in 2-time mode.
With the lever down it is in TIG welding and the control of wel-
ding process is made with the torch button in 4-time mode.
In two-stage mode depression of the button causes the gas to
flow and activates the voltage on the electrode; when the but-
ton is released the current goes to zero in the slope down
time; once the arc is switched off, the gas flows for the post-
gas time.
In four-stage mode initial depression of the button causes the
gas to flow, performing a manual pre-gas time; when relea-
sed, the voltage is present on the torch, striking the arc and
performing the weld. If the button is pressed again, the cur-
rent slope down begins; final release of the button will start
the post-gas time.
* S2: TIG operation selector
If the welder is set to TIG 2T or TIG 4T via S1, constant cur-
rent TIG welding is obtained by setting the lever to the up
position; set the lever to the intermediate position to obtain
pulsed current TIG welding with frequency variable from
0.25Hz to 25 Hz via P2 and to the down position to obtain
medium frequency TIG welding with frequency variable from
25 Hz to 250 Hz via P2.
* C1: Connector.
Used to convey the torch button signal to the welder.
Fig.1