Lincoln Electric INVERTEC 165S Operator's Manual page 8

Picture 1 Page 6.).

5. Press the illuminated switch to turn on the power
source (Ref. 1 - Picture 1 Page 6.).
Serious damage to the equipment may result if the
power source is switched off during welding operations.
The power source is fitted with an anti-sticking device
that disables power if output short circuiting occurs or if
the electrode sticks, allowing it to be easily detached
from the work piece.
This device enters into operation when power is supplied
to the generator, even during the initial checking period,
therefore any load input or short circuit that occurs
during this phase is treated as a fault and will cause the
output power to be disabled.
Connection and preparation of equipment for
gas tungsten arc welding TIG
TURN OFF WELDER
CONNECTIONS.
Connect all welding accessories securely to prevent
power loss. Carefully
described.

Fit the required electrode and nozzle to the electrode
holder (check the protrusion and state of the
electrode tip).

Connect the earth lead connector to the positive (+)
quick- connect terminal (Ref. - Picture 1 Page 6.)
and the earth clamp to the work piece near the
welding zone.

Connect the torch
connection negative (-) terminal (Ref. 6 - Picture 1
Page 6.).

Connect the torch gas hose to the gas cylinder
outlet.

Press the illuminated switch to turn on the power
source (Ref. 1 - Picture 1 Page 6.).

Check that there are no gas leaks.

Adjust welding current with ampere selector (Ref. 2 –
Picture 1 Page 6.).
Check gas delivery; turn gas cylinder knob to regulate
flow.
The electric welding arc is struck by lightly touching the
work- piece with the electrode (Scratch start).
When working outdoors or in windy conditions protect
the flow of shielding gas or it may be dispersed with
resulting lack of protection for the weld.
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NOTE
BEFORE MAKING
follow safety precautions
lead connector to quick-
NOTE
NOTE
Functions
Front panel
Picture 1

Connect the earth lead to the work piece to the
negative terminal (-) (Ref. 6 - Picture 1 Page 6.)

Connect the torch lead to the positive terminal (+)
(Ref. 5 - Picture 1 Page 6.).
ENSURE THAT THESE CONNECTIONS ARE WELL
TIGHTENED TO
OVERHEATING.

Use control knob (Ref. 2 - Picture 1 Page 6.) to
regulate welding current.

Illuminated switch (Ref. 1 - Picture 1 Page 6.) must
be ON (lamp light) before welding operations can be
started.

Illumination of the yellow LED (Ref. 3 - Picture 1
Page 6.) on the front panel indicates a fault which
prevents the equipment from functioning.
The yellow LED indicates two fault types:

overheating caused by an excessively intense duty
cycle. In this case, stop welding and leave the power
source switched on until the LED switches off.

power supply too high/too low.

In this case, wait till the LED switches off, indicating
normalization of the supply voltage and then resume
welding.
6
AVOID POWER LOSS AND
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