Tweco 186-AC-DC User Manual

!"#$%&'&

Thermal Arc 186 AC/DC

Setup Guide

Thermal Arc 186 AC/DC Complete System Overview

!"#$%&(&

!"#$%&'()*$%*$#'

• '+,%-&./'0-1'234'0(56('7)8%-'!9::/"''

• '+;<'+)-1,'='011%##)->%#?'@4'!$"/%'8>$,'>*$%A-.$%B'1)*$-)/#'''

''CD'1)*$-)/'&)B9/%#'>*1/9B%BE?'2D'F'CG'&E''

• '+8%1)'@HH'0&:'I/%1$-)B%'J)/B%-'8>$,'2D'F'CG'&E'K%.B''

• '+8%1)'@HH'0&:'<-)9*B'(/.&:'8>$,'2H'F'CD'&E'K%.B''

• 'L>1$)-'0-A)*'M/)8'<.9A%'='2@NO'F'CDN3'&E'J)#%''

• 'P'F'C@NQO'&E'7)8%-'()-B'.*B'RIS0'4TOH7'@DH'0('7/9A''

• 'U:%-.$)-#'S.*9./'='(6''

• '<%*%-./'79-:)#%'!V1W'I/%1$-)B%#'CI4H2DE''

• '!,)9/B%-'!$-.:''

XY;(Z'!7I(;M;(0+;UR!''

''
7[U(I!!I!'\ ''
JM'+;<'C<+0]E'K>F'+;<'C<+0]E'
!+;(Z'C!S0]E''

''

[0+I6'UY+7Y+' ''

())*&+&',-&.&()/&0123&435"%&
',)*&+&'67(-&.&(8/&0123&435"%&
'8)*&+&'9-&.&:8/&0123&535"%&&

&&

S0^N'U7IR'(;[(Y;+'LUK+0<I'

6)7:-&04&+&8)&-*4&&

&&

0S7I[0<I'[0R<I' ''

');())&*& &&
&

]I;<J+' ''

<,7<&"=>&?((&@AB ''

186 AC/DC Front Panel Overview

!"#$%&:&

Digital Meters-

Displays both the pre-set and

actual output current and

voltage of the power source.

Also used to display parameters

in programming mode.

AC/DC
Mode,
Pulse and
Purge
Buttons

Process
Selection

Button -

Three modes
are available,

GTAW (LIFT
TIG), GTAW (HF
TIG) & SMAW
(Stick) modes.

Trigger

Control

Button

Multi Function

Control Knob

Programming Parameter
Indicator Lights

TIG Torch and Control Modules Overview&

!"#$%&<&

TIG Torch Contents:

•  26 TIG Torch with Long Back Cap

•  12.5 ft lead length

•  10. 5 in gas hose length

•  9.5 in control lead with 8 pin plug and Rigid Head.

•  Remote Control Cartridge, Potentiometer with integrated on/off
switch (installed).

0C>$C>$C&
!$C>$C&

>$C>$C&

Additional switches/controls are interchangeable with the
installed control in the TIG torch.

Control module
with push button
on/off switch only.

Control module with
push button on/off
switch with roller
potentiometer.

Control module
with roller
potentiometer and
integrated on/off
switch.

TIG Setup

!"#$%&8&

1. Connect the TIG Torch to the negative
welding terminal (-). Welding current

flows from the power source is
heavy duty bayonet type terminals. It is
essential, however, that the male plug is
inserted and turned securely

to achieve a sound electrical connection.

2. Connect the work lead to the positive
welding terminal (+). Welding current

flows from the Power Source is
heavy duty bayonet type terminals. It is
essential, however, that the male plug is
inserted and turned securely
to achieve a sound electrical connection.

3. Fit the welding grade shielding gas
regulator/flowmeter to the shielding gas
cylinder, then connect the shielding gas

hose from the regulator/flow meter outlet
gas INLET on the rear of the 186 AC/DC
Power Source. Connect the gas hose
from the TIG torch to the gas OUTLET
on the front of the

186 AC/DC Power Source.