Selco WF114 Instrucciones De Uso página 15

2.8 Maintenance
Routine maintenance must be carried out on the system accor-
ding to the manufacturer's directions.
When the equipment is working, all the access and operating
doors and covers must be closed and fixed.
No type of modification must be made to the system.
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.
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.
* Use suitable spanners and tools.
Failure to perform said maintenance will invalidate all war-
ranties and exempt the manufacturer from all liability.
3 WF DESCRIPTION
3.1 WF114 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.
T1: used to select 2-stage, and 4-stage welding, it causes wire-
feeding when operating cover is open.
Two-Stage: in two-stage mode, pressing the button
causes the gas to flow, activates the voltage on the wire
and moves it forward; when released, the gas, the voltage and
the wire feed are de-activated.
Fig.2
Four-Stage: in four-stage mode, the first time the but-
ton is pressed, the gas flows, running a manual pre-gas
time; when released, the wire voltage and feed are activated. If
the button is pressed again, the wire is blocked and the final
process is initiated, setting the current to zero; final release of
the button stops the gas flow.
Wire feeder: permits manual wire feed, a function that
is enabled with the coil compartment gate open (for
the passage of the wire along the torch sheath during prepara-
tion operations). When the gate is open, the torch button ena-
bles only the flow of gas.
P1: wire speed adjustment potentiometer.
To access trimmers TR1 and TR2 take away the front panel on
the wirefeeder.
Trimmer TR1, burn back: permits adjustment of the wire burn
time, preventing sticking at the end of welding.
Permits adjustment of the length of the wire piece outside the
torch.
Minimum 0.01 sec., Max 2 sec., Default 0.02 sec.
Trimmer TR2, soft start: permits adjustment of the wire feed
speed during the phases prior to sparking.
It is given as a % of the wire speed set.
It permits sparking at reduced speed, therefore softer and with
fewer splashes.
Minimum 10%, Max 100%, Default 50%
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