Controls And Settings; Control Panel Keys - Lincoln Electric SQUARE WAVE TIG 255 SVM100-A Service Manual

CONTROLS AND SETTINGS

All operator controls and adjustments are located on the case front of the Square Wave TIG 255. Refer to Figures
B.1, B.2.a and B.2.b and corresponding explanations.
1

CONTROL PANEL KEYS

The keys are grouped into six areas, described below
and in Figure B.1. 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: These keys select Local
or Remote and adjust the Amps Up or Amps
Down. These keys are used to set thewelding cur-
rent 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.
OPERATION
FIGURE B.1 - CONTROL PANEL KEYS
7
THE LINCOLN ELECTRIC COMPANY CLEVELAND, OHIO USA
CURRENT CONTROL
WELD MODE HF HIGH FREQUENCY
LOCAL REMOTE
TIG 2-STEP CONTINUOUS
HF
AMPS
TIG 4-STEP START ONLY
HF
STICK
A
OFF
LINCOLN
R
ELECTRIC
2
3
1. WELD MODE KEYS
2. CURRENT CONTROL KEYS
3. HIGH FREQUENCY KEYS
4. AC WAVE BALANCE KEYS
AC/DC OUTPUT CAPACITY: 255 AMPS 30 VOLTS 40% DUTY CYCLE
AC WAVE BALANCE
TIG PULSER AFTERFLOW
2
OFF ON SECONDS
AUTO- MANUAL
BALANCE BALANCE
PULSES PER SECOND
CLEAN
f
PENETRATE
6
4
5
5. TIG PULSER KEYS
6. AFTERFLOW KEYS
7. DISPLAY
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.
B-6
G2612
2
SQUARE WAVE TIG 255