Adjustments And Settings; Connector For Tig Welding - Fimer T 422 Manuel D'emploi

ADJUSTMENTS AND SETTINGS:

Button 8 controls the current and the
machine power.
Button 10 adjusts the welding settings on the
screen:
Start current: Used to set the value to which
the initial welding current is set immediately
after the electric arc has been struck.
Start time: Used to set the time for which the
current determined by the initial current
parameter is applied.
Slope up: Used to set the duration of the
ramp-up of the welding current.
Pulse mode: Used to activate (Hz) or
deactivate (OFF) the pulse welding mode;
with the pulse welding mode the machine
delivers the welding current for a certain
period and the current determined by the
base current parameter for another period of
time. The number of current pulses per unit
time is given by the value of the Frequency
parameter.
The pulsation is activated only during the
welding phase and not during the initial/final
current or ramp phases.
Background current: Used to set the base
current delivered during the generation of
pulses.
Pulse frequency: Used to set the number of
current impulses per unit of time when the
pulse welding mode is active.
Pulse balance:
percentage of time for which the welding
current is applied when the pulse welding
mode is active.
Spot welding: Used to set (if other than 0)
the maximum duration of the weld.
This represents

8. CONNECTOR FOR TIG WELDING

1) Connect the earth cable to the appropriate '+'
socket on the front of the device (13 of Fig .1).
Insert by lining-up the key with the groove
and turn in a clockwise direction until it stops.
Do not fasten too tightly!
2) Connect the torch to the appropriate '-'
socket on the front of the device (11 of Fig .1).
3) Insert by lining-up the key with the groove
and turn in a clockwise direction until it stops.
Do not fasten too tightly!
4) Insert the torch pulse signal connector into
the socket.
TIG WELDING:
Before connecting the gas make sure the
cylinder contains inert gas. Never use any
other type of gas.
Connect the pressure regulator to the cylin-
der, after which, connect the latter to the gas
tube of the torch.
TIG welding is usually car-
ried out with a constant cur-
rent, with a negative pole
('-' see fig.3).
The cable of the TIG torch
is then inserted into the nega-
tive socket (11 of fig.1), whil-
st the earth cable of the work-
piece is connected to the
positive socket. (13 of fig.1).
At this stage it is possible to adjust the
the
welding current using the potentiometer
(8 of fig. 1) on the front panel.
The diameter of the electrode and the
welding current settings must be selected
according to the characteristics of the
material to be welded.
Fig.3
11