Pro-Weld ARC 1850, Operation Manual

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ARC 1 8 5 0
PRO WEL D
Figure 2 CONTROL PANEL FRONT
(DUAL GUN SYSTEM)
7.0 CONTROL PANEL DESCRIPTION
START/STOP PUSH BUTTON
Momentarily depressing the START button will energize the
main contactor inside the unit allowing all circuits to be acti-
vated and the the cooling fan to run. Momentarily depressing
the STOP button will deactivate the entire machine.
STUD/CONSTANT OUTPUT SWITCH
When this switch is in the stud position, the unit is a dedi-
cated stud welding power supply with built in time and cur-
rent controls. When in the constant output position the unit
becomes a welding power supply that can operate an external
control box.
WELD/SETUP SWITCH
This switch directs the digital panel meter to display either
the setup parameters or the actual weld parameters. This
switch
must be in the weld position for the unit to weld.
TIME/CURRENT SWITCH
This switch selects either the weld time or weld current that
is to be displayed on the digital meter.
WELD TIME ADJUSTMENT
Select: SETUP, TIME and adjust the time control knob until
the digital meter displays the desired time. Return setup
switch to WELD before attempting to weld. The weld time is
adjustable from .1 to 1.6 seconds.
WELD/CURRENT ADJUSTMENT
Select: SETUP, CURRENT and adjust the current control
knob until the digital meter displays the desired current. Re-
turn setup switch to WELD, before attempting to weld. Weld
current is adjustable from 100 to 1900 amps.
DIGITAL PANEL METERS
Displays weld time or weld current.
After a stud weld, the digital meter will automatically display
the actual weld parameters. The meter will automatically re-
set and display the time or current for each weld.
TRIGGER LED INDICATOR
The trigger LED “on” indicates a complete circuit to the unit
through the gun control cables and gun switch. This LED
will turn “on” when the gun trigger is pressed.
GUN FAULT LED INDICATOR
The gun fault LED “on” indicates a shorted gun solenoid or a
shorted control cable. The LED will stay “on” and lock out
the gun from triggering.
THERMAL LED INDICATOR
The thermal LED “on” indicates the internal temperature has
reached the maximum rated temperature in either the weld
bridge or the main transformer. LED “on” will prevent the
gun from being triggered.
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