Lincoln Electric SQUARE WAVE TIG 255 IM520-B - Manual (Page 18)

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OPERATION
4. AC WAVE BALANCE: These keys are active in
the AC TIG mode only. They are used to set the
amount of cleaning and/or penetration produced
during an AC TIG weld. Auto Balance™
automatically sets the AC Wave Balance according
to the welding current. If manual adjustment is
desired, the Manual Balance key can be pressed,
and the balance adjusted from +5 (cleaning) to -10
(penetration) with the Cleaning and Penetration
keys. Read the Advanced Features section for a
complete explanation of the AC Wave Balance.
5. TIG PULSER: These keys are active in the TIG
mode only. The On/Off keys turn the TIG Pulser
on and off. The Pulses Per Second keys adjust
the pulsing frequency up and down, from 0.5 to 10
pulses per second. Read the Advanced Features
section for more information on the TIG Pulser.
6. AFTERFLOW: These keys are active in the TIG
mode only. They must adjust the afterflow time
from 5 to 50 seconds for shielding gas and cooling
water flow through solenoids located on the case
front. As the Afterflow time is adjusted, the
Afterflow time, in seconds, is shown in the
Momentary Display.
CONTROL PANEL KEYS
The keys are grouped into six areas, described below
and in Figure 3. Some areas are active in both TIG
and Stick, while others are active in TIG only. The red
LED indicator lights are used to tell which functions
are active, and the display (Item 1) is used to check
the settings of the up/down keys.
1. WELD MODE KEYS: These keys select the Weld
Mode desired: TIG 2-Step, TIG 4-Step, or Stick.
Read the complete Operating Instructions section
for more information on TIG 2-Step and
TIG 4-Step.
2. CURRENT CONTROL: This area contains the
Local/Remote keys, as well as the Amps Up/Amps
Down keys. These keys are used to set the
welding current from 5 to 315 amps, as well as to
select Local or Remote control. Local control
allows the current to be adjusted only with the
Amps Up/Amps Down keys. Remote control
allows the use of a hand or foot operated remote
control. Read the complete Operating Instructions
section for more information on Local and Remote.
3. HIGH FREQUENCY: These keys are active in the
TIG mode only. Select from Continuous, Start
Only, or Off. Read the TIG Welding Section for
information on High Frequency.
CONTROLS AND SETTINGS
All operator controls and adjustments are located on the case front of the Square Wave TIG 255. Refer to Figures
3 and 4 and corresponding explanations.
FIGURE 3 - CONTROL PANEL KEYS
2
LINCOLN
R
ELECTRIC
THE LINCOLN ELECTRIC COMPANY CLEVELAND, OHIO USA
ON OFF
TIG PULSER WELD MODE HIGH FREQUENCY AFTERFLOW CURRENT CONTROL
LOCAL REMOTE
STICK
TIG 2-STEP
TIG 4-STEP
HF
HF
CONTINUOUS
START ONLY
OFF
HF 2
SECONDS
PULSES PER SECOND AMPS
A
f
CLEAN
PENETRATE
AC WAVE BALANCE
AUTO-
BALANCE
MANUAL BALANCE
G2612
AC/DC OUTPUT CAPACITY: 255 AMPS 30 VOLTS 40% DUTY CYCLE
7
1
2
3
4
5
6
1. WELD MODE KEYS 5. TIG PULSER KEYS
2. CURRENT CONTROL KEYS 6. AFTERFLOW KEYS
3. HIGH FREQUENCY KEYS 7. DISPLAY
4. AC WAVE BALANCE KEYS