Table of Contents
Advertisement
SECTION 3
Pos. #6
pressed. Arcing can occur if the wire touches
a ground. Keep torch away from metal
ground until welding is to begin.
A. WELDING
Assuming that both Schedules (I and II) for each torch
have been preset per section 3.4, the operator simply
places the ROTARY switch to the schedule (I or II) he
chooses to use first.
To start welding, select either of the two torches and
close its torch switch lever to utilize the previously
selected welding Schedule (I or II)—please remember
that if gas preflow time is programmed, the arc will not
establish until the preflow has timed-out. If during the
"selected" schedule welding, the torch switch lever is
released and reactivated within 2/10 of a second, the
microprocessor will automatically switch the control to
the "remaining" schedule parameters for the selected
torch. Using this simple "click-click" (off-on) cycling
action, the operator can easily shift back and forth
between Schedules I and II by sequencing the torch
lever within the 2/10 second time frame.
Remember, if Trigger-Lock-In is actuated, it automati-
cally overrides the alternate Schedule and/or Spotweld
function if programmed (see 3.2-3a).
To stop welding, (w/o Trigger-Lock-In), simply re-
lease the torch switch lever and do not reactivate (all
services will shutdown except auto-antistick or manual
burnback and postflow). After welding has been stopped,
the control will always recycle back to the "selected"
schedule welding parameters. The system will also
Positions
#1
#2
#3
#4
#5
shutdown if preset wire speed or arc voltage parameters
cannot be maintained due to an abnormal condition. If
this occurs, the parameter causing the system shut-
down will be signaled by a flashing digital display
window. To clear the shutdown/abort, activate the RE-
SET position of the Inch-Purge (Reset) switch on the
front panel.
To stop welding if the Trigger-Lock-In feature is
actuated (on), simply repress the torch switch lever
again and all welding action will cease.
Whenever you wish to change torches for a different set
of welding conditions, simply stop welding with one
torch and energize the torch switch lever of the other
torch to actuate its programmed circuitry.
B. SPOTWELDING
Remember, if a spotwelding operation is desired, the
Spot-weld-time can be programmed into either Sched-
ule (I or II) for either or both torches; and that when
programmed, the "click-click" feature for changing sched-
ules cannot be used as it was for "continuous-type"
welding operations. To change schedules for
spotwelding, you must manually reposition the Rotary
switch selector to the desired Schedule (I or II) for that
torch.
To start a spotweld operation; close the torch switch
to energize gas flow, weld contactor, wire feed motor
and start spot timing cycle. The torch switch must be
depressed during the entire weld period. After the spot
timing cycle is completed; all welding action, except
auto-antistick or burnback and postflow will stop when
the torch lever is released.
To resume normal (continuous) welding operation in
Schedule I and II for either or both torches, you must
deactivate the Spot mode by resetting each "timed-arc"
parameter back to zero (000).
Do not allow metal-to-metal contact between the
wire feeder chassis and a metal surface connected
in any way to a welding ground. With such contact,
a poor welding ground connection may create a
difference In potential that sends part of the welding
current through the safety ground wiring, resulting
in burnout of that wiring and/or damage to the feeder
circuitry. If the safety ground burns out, the operator
may be exposed to 115-volt shock hazard.
OPERATION
17
Advertisement
Table of Contents
