Possible Faults In The Tig Welding; Accessory / Remote Controls; Rc16 Potentiometer Remote Control For Mma And Tig Welding; Rc12 Pedal Remote Control For Tig Welding - Selco Genesis 245 TLH Instrucciones De Uso

2.6.3 Possible faults in the TIG welding

Fault
Oxidations
Tungsten inclusions
Porosity
Hot cracks

2.7 Accessory / Remote controls

2.7.1 RC16 potentiometer remote control for MMA and TIG
welding.
This device allows you to vary, by remote
control, the amount of current necessary
without interrupting the welding process
or abandoning the work area. 5, 10 and
20 m connection cables are available.

2.7.2 RC12 pedal remote control for TIG welding.

Once the power source has been swit-
ched to the EXTERNAL CONTROL
mode, the output current is varied from a
minimum to a maximum value (can be
entered from SETUP) by varying the
angle between the pedal surface (where
the foot rests) and base. A microswitch provides the weld start
signal at minimum pressure.

2.8 Welding power source maintenance

The welding power source needs routine maintenance accor-
ding to the manufacturer's instructions.
When the equipment is working, all the access and operating
doors and covers must be closed and fixed.
The welding power source must not be modified in any way.
Prevent metal powder from accumulating near the aeration fins
and over them.
Disconnect the power supply before every operation!
Carry out the following periodic controls on the
power source:
* Clean the power source inside by means of low-
pressure compressed air and soft bristel brushes.
* Check the electric connections and all the connec-
tion cables.
For the use and maintenance of the pressure
reducers, consult the specific manuals.
18
Cause
- lnsufficient gas.
- No protection on the re-
verse.
- lncorrect electrode shar-
pening.
- Electrode too small.
- Operating failure (contact
of the tip with the work-
piece).
- Dirt on the edges.
- Dirt on the filler material.
- High advancement speed.
- Current intensity too low.
- Unsuitable filler material.
- High heat supply.
- Dirty materials.
For the maintenance or replacement of torch
component TIG/MIG, electrode holder and/or
earth cables:
* Check the temperature of the component and make
sure that they are not overheated.
* Always use gloves in compliance with the safety stan-
dards.
* Use suitable spanners and tools.
Failure to perform said maintenance will invalidate all war-
ranties and exempt the manufacturer from all liability.

3 MACHINE DESCRIPTION

3.1 Generalities

The Genesis 245 TLH power sources offer excellent performan-
ce in the following welding procedures:
- MMA;
- TIG with remote arc striking with high frequency (TIG HF-
START) and gas delivery control via torch button;
- TIG with contact start with reduction of short circuit current
(TIG LIFT-START) and gas delivery control via torch button.
In inverter welders the output current is insensitive to variations
in the power supply voltage and length of the arc and is per-
fectly levelled, providing best weld quality.
The power source features the following devices:
- a positive socket (+), a negative socket (-) and a central so-
cket for connection of the TIG torch
- a front control panel with socket for remote controls

- RC16 potentiometer remote control for MMA and TIG welding

- RC12 pedal remote control for TIG welding
- a rear control panel with gas socket.
The Genesis 245 TLH can be supplied with WU15 cooling unit
for liquid cooling of the TIG torch.

3.2 Front control panel

L1: comes on as soon as the power source is powered.
L2: indicates cut-in of any protection devices such as
the thermal protection.
L3: comes on when voltage is present at the welder out-
put.
D1, 7-segment display: permits display of general welder informa-
tion during start-up, the settings and current and voltage readings
during welding, and alarm codes.
Fig.3