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INPUT LEADS L1 & L2
INPUT SUPPLY
CONNECTION
H2
H3
FOR 220-240V: CONNECT COPPER LINK TO H2 -
(SEE INPUT SUPPLYCONNECTION SECTION)
FOR 380V: CONNECT COPPER LINK TO H3
FOR 400-415V: CONNECT COPPER LINK TO H4 (AS SHOWN)
FIGURE A.1 Reconnect Leads
OUTPUT CONNECTIONS
FIGURE A.2 Location of Output Connections
CONNECTIONS FOR TIG (GTAW) WELDING
TIG TORCH CONNECTION
The Square Wave TIG 175 is supplied with a Twistmate
receptacle which combines the Electrode and Gas
connections. Use a LA-9, LA-17 (See OPTIONAL
ACCESSORIES section), or any equivalent TIG torch
with a right hand male 3/8-24UNF-2B fitting. An
adapter and protective boot are included to connect
torches with the specified fittings. Slide the rubber
INSTALLATION
H4
ELECTRODE/GAS OUTLET
RECEPTACLE
WORK CABLE & CLAMP
SQUARE WAVE TIG 175
strain relief boot onto the torch and connect the fitting
to the adapter. The rubber strain relief boot slips over
the connection and adapter block to provide shock pro-
tection.
WARNING
To avoid receiving a high frequency shock, keep the
TIG torch and cables in good condition.
__________________________________________
WORK CABLE CONNECTION
A work cable with attached work clamp is factory con-
nected to the Square Wave TIG 175. To minimize high
frequency interference, refer to Machine Grounding
and High Frequency Interference Protection section
of this manual for the proper procedure on grounding
the work clamp and work piece.
SHIELDING GAS CONNECTION
Obtain the necessary inert shielding gas (usually
argon). Connect a cylinder of gas with a pressure reg-
ulator and flow gage. Install a gas hose between the
regulator and gas inlet (located on the rear of the
welder). The gas inlet has a 5/8-18 right hand female
thread; CGA #032.
WARNING
CYLINDER could explode
if damaged.
•Keep cylinder upright and chained
to a support.
•Keep cylinder away from areas where it could be
damaged.
•Never allow the torch to touch the cylinder.
•Keep cylinder away from live electrical circuits.
•Maximum inlet pressure 150 psi.
___________________________________________
The optional undercarriage features a pivoting platform
that simplifies loading and unloading of gas cylinders.
A cylinder is loaded by leaning it slightly sideways and
rolling it toward the platform. The cylinder's weight will
push the platform downward against the floor, forming
a ramp. At this point, the cylinder may be rolled up the
platform into its final position. Secure the cylinder in
place with the provided chain. Unload by following
these steps in reverse.
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