A) Power Indicator lamp
This lamp is illuminated when the On-Off switch on the
back of your Invertig 221 is turned to the 1 or “On” position,
indicating the unit is correctly connected to 220
volt AC power.
B) Welding Current Indicator lamp
When either the foot pedal or the trigger switch on the TIG
torch is depressed, welding current will be applied to the
welding torch and the Welding Current Indicator Lamp will
be illuminated.
If your Invertig 221 AC/DC is in the stick-welding mode, the
welding current indicator lamp will be illuminated all the time.
C) Thermoswitch Indicator lamp
The thermoswitch indicator lamp will light up when the duty
cycle of your Invertig 221 AC/DC has been exceeded. When
this lamp is illuminated, the machine will no longer weld
because the machine has overheated. Leave the machine
plugged in and turned on so the cooling fans can cool the
unit down. Allow the machine to cool for 15 to 30 minutes,
the thermoswitch should reset automatically and your
Invertig will be ready to weld.
D) Welding Mode Switch
The welding mode push button allows you to select the
welding mode of your Invertig 221 AC/DC.
D1) Stick Welding Mode
Depressing the welding mode button (D) until the “stick” light
(D1) is illuminated will activate the “stick welding mode”. This
mode is used for SMAW (stick electrode or arc) welding. As
shown in Fig 16, the stick light (D1) is illuminated and the amps
display will flash “Arc”. When the display stops flashing, the
welding current will be displayed in the “AMPS” digital display,
and the welding voltage will be displayed in the “VOLTS”
digital display.
The only parameter
you can adjust
is the amperage.
Hot start
and arc force are not adjustable. The machine will run all types
of electrodes including 6010.
You can stick weld in both AC and DC. When stick welding in AC,
all AC functions are adjustable – AC Frequency, AC Balance and
independent AC amperage adjustment. The pulse function is
also fully functional in the stick weld mode
from 0.4Hz to 5Hz.
The electrode will always be hot and the gas solenoid will not
operate. The green “Welding Current” lamp will be illuminated
indicating the welding current is on.
1
1
4
3
2
1
F
E
D
4a
4b
2a 2b 2c 2d 2e 2f 2g
C
B
A
D1
D2
D3
D4
D5
Welding Mode section
Figure 16
D1
D
If you do not plan to use a remote control (hand or foot) for
amperage adjustment while stick welding, remove the remote
control. If you do not remove the remote control, the machine
reverts to the start-up amperage (generally 4 amps) when you
strike an arc, whether or not you manually set the amperage at
the machine.
V.R.D. (Voltage Reduction Device) is a system which reduces the no-
load voltage to a lower and safer voltage (normally less than 18 volts.
Used as an addition
al
aid for operator safety and for when safety
procedures at work require protection. The V.R.D. function not only
makes the welding machine safer, but also makes the stick welding
rods harder, or even very hard in some cases, to light. To activate the
V.R.D., hold down the MODE button for approximately 5 seconds, and
then release the button. The Stick welding mode LED flashes
indicating the V.R.D. is activated. To deactivate the V.R.D., hold down
the MODE button for approximately 5 seconds, and then release the
button. The Stick welding mode LED stops flashing and illuminates
solidly, indicated the V.R.D. is deactivated.
