Field Installation Of Tig-Unit - Miller Electric KC237900 Owner's Manual

Interconnecting
Cord
2. Attach plug from remote control cord (long cord, ap-
proximately 28 ft. or 8.5 m) to amphenol receptacle
on left side of TIG-Unit (under front access door);
align keyway, insert plug, and rotate threaded collar
clockwise. Route remote control cord through ac-
cess opening on left side of TIG-Unit to desired lo-
cation.
3. Remove and discard bottom center sheet-metal
screw from right side panel of welding power
source.
4. Route welding cables (labeled POSITIVE and
NEGATIVE) from rear of TIG-Unit down right side of
welding power source.
5. Slide supplied clamps (in bag) over welding cables,
and attach clamps with new sheet-metal screw (in
bag) to bottom center hole on right side panel of
welding power source. Before securing sheet-metal
screw, route welding cables from rear of TIG-Unit to
output terminals under front access door on welding
power source and connect POSITIVE lead (No. 17)
and NEGATIVE lead (No. 12) to correspondingly la-
beled terminals on the welding power source (see
Figure 3-1). Secure clamps with sheet-metal
screw; secure cables to terminals.
6. Make the necessary connections to the gas and wa-
ter valves also located behind access door on lower
front panel of TIG-Unit in a proper manner. The
valves are labeled; ensure that connections are cor-
rect (see Figure 4-1 and Sections 3-11 and 3-12).
Positive
Output
Terminal
Positive Lead
(No. 17)
Negative
Output
Terminal
Figure 3-1. Component Installation
Negative Lead
(No. 12)
7. Install proper welding cables (see welding power
source's Owner's Manual for correct size) to the
weld output terminals behind access door on TIG-
Unit (see Figure 4-1).

3-4. FIELD INSTALLATION OF TIG-UNIT

WARNING: ELECTRIC SHOCK can kill.
Do not touch live electrical parts.
Shut down welding power source, and dis-
connect input power employing lockout/tagging
procedure before beginning this installation.
Lockout/tagging procedures consist of pad-
locking line disconnect switch in open position,
removing fuses from fuse box, or shutting off
and red-tagging circuit breaker or other discon-
necting device.
IMPORTANT: Although this unit was primarily designed
to be mounted directly to the welding power source, re-
mote installation is possible if necessary. For remote in-
stallation procedures, see Section 3-7. All directions,
such as left or right, are with respect to the operator fac-
ing the welding power source front panel. Retain all
hardware removed during this procedure for reinstalla-
tion. For installation onto 600 ampere welding power
sources which require different mounting instructions,
see Section 3-4C.
IMPORTANT: There are two methods for supplying
power to the TIG-Unit, one of which must be chosen at
the beginning of this installation. Never use both meth-
ods. After choosing the desired method, follow the ac-
companying instructions for that particular installation.
The first method (A) is to connect the TIG-Unit to an out-
ST-059 589-A
OM-530 Page 3