Operation; Different Functions Of Lorch Tig Welding Torch; Tig Operation - LORCH LTG 900 Bedienungshandbuch

 Then screw torch side gas connection di-
rectly on the pressure reducer regulator
and tighten with suitable wrench.
 The required gas volume can be adjusted
by turning the pressure reducer regulator.
The amount depends on the welding job
and gas nozzle geometry.
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Operation

Before operating torch check the following:
– Is TIG welding torch firmly connected
to LORCH power source ?
– Is torch fitted with the correct parts for
task at hand?
– Are parameters set in power source?
– If water cooled: is circulating cooling
unit working and is there sufficient
coolant flow?
– Has gas been tested to prevent con-
tamination and / or to check gas pres-
sure?
‰ If all the above points have positive re-
sults, you can begin your welding job.
6 .1 Different functions of LORCH
TIG welding torch
Depending on the desired functionality
and possibilities of the LORCH TIG power
source, the welding torch can be equipped
with different switch modules.
Double button (DD)
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Start / Stop the welding process
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Selection of second current (On / Off)
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Up/Down (UD)
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Up: increases welding current
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Down: reduces welding current
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Blade (LA)
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6 .2

TIG operation

 Please follow the instructions during the
complete TIG operation.
 Set the tig torch to the required start posi-
tion.
 Ignite the arc with the on/off button. (At
LTV: open the gas valve, and assure the
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gas coverage is available after this, start
the Contact TIG-ignition).
 After ignition keep the torch at the start
point until establish a weld pool.
 Guide the torch constant during the whole
seam length following the instructions
Avoid contact with hot torch parts
and work pieces.
Operation
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