Work Cable Connections; Shielding Gas Connection; Remote Control Connection; Connections For Stick (Smaw) Welding - Lincoln Electric PRECISION TIG SVM186-A Service Manual

A-7
CONNECTIONS FOR TIG (GTAW) WELDING
TIG TORCH CONNECTION
A PTA-17 Twist-Mate TIG welding torch with cable and
connector is supplied with the Ready-Pak Models and
available for other models (See Accessories
Section). Turn the Power Switch "OFF". Connect the
torch cable Twist-Mate quick connect plug into the
Electrode/Gas Output Receptacle on the front of the
welder and turn it clockwise until it is tight. This is a
Twist-Mate quick connect terminal and also provides
the gas connection for the shielding gas to the torch.
To avoid receiving a high frequency shock, keep
the TIG torch and cables in good condition.
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WORK CABLE CONNECTION
WARNING
A work cable with attached work clamp is factory con-
nected to the PRECISION TIG® 225. To minimize high
frequency interference, refer to Input and Ground
and High Frequency Interference Protection section
of this manual for the proper procedure on grounding
the work clamp and work piece.

SHIELDING GAS CONNECTION

An adjustable gas pressure regulator with flow gage
and hose is supplied with the PRECISION TIG® 225
Ready-Pak™ models and available separately for
other models (See Accessories Section). Obtain the
necessary inert shielding gas (usually argon). Connect
the cylinder of gas with the pressure regulator and flow
gage. Install the gas hose between the regulator and
gas inlet (located on the rear of the welder). The gas
inlet has a 5/16-18 right hand female thread;
CGA#032.
INSTALLATION
The available Under-Storage Cart features a low plat-
form that simplifies loading and unloading of gas cylin-
ders.
• Never allow the torch to touch the cylinder.
• Keep cylinder away from live electrical circuits.
• Maximum inlet pressure 150 psi.
------------------------------------------------------------------------
A cylinder is loaded by leaning it slightly sideways and
rocking it up on the platform, being careful not to allow
the Under-Storage Cart to roll. Secure the cylinder in
place with the provided chain. Unload by following
these steps in reverse.

REMOTE CONTROL CONNECTION

A remote control receptacle is provided on the case
front of the welder for connecting a remote control to to
the machine. A Foot Amptrol™, foot activated remote
control, is included with the PRECISION TIG® 225
Ready-Pak™ models and available separately for
other models. Refer to the Optional Accessories
Section of this manual for other available remote con-
trols.
CONNECTIONS
WELDING
STICK ELECTRODE CABLE AND WORK CABLE
CONNECTION
Refer to Field Installed Options in the Accessories
Section of this manual for STICK welding equipment
which is available for use with the PRECISION TIG®
225. An electrode holder with Twist-Mate™ cable and
Twist-Mate™ connector are available separately for
use with
Accessories Section). Turn the Power Switch
"OFF". Connect the Twist-Mate™ quick connect plug
into the Electrode/Gas Output Receptacle and turn it
clockwise until it is tight. The work cable and work
clamp are factory connected.
PRECISION TIG® 225
WARNING
CYLINDER could explode
if damaged.
• Keep cylinder upright and chained
to a support.
• Keep cylinder away from areas
where it could be damaged.
FOR STICK
the PRECISION TIG®
A-7
(SMAW)
225. (See