BUG-O Systems CWP-11 - Manual (Page 11)

11
CWO-3535 LN-9 WIRE FEEDER CONTROLS
For further information refer to Lincoln Electric LN-9 Wire Feeder Operators Manual
A. WIRE BURN BACK CONTROL
This control provides a precise time delay that allows the wire to be burned off at the end of
the weld. This is useful for those applications where higher speed, fine wire feeding is used
and there is a tendency for the electrode to overrun at the end of the weld and cause “stick-
ing” in the crater. The delay is adjustable for optimum burn back depending on wire size,
process, procedure, Etc.
B. WIRE POLARITY CONTROL
Set the switch to the same polarity as the electrode lead connection to the power source. If
the switch is not set for the correct polarity the wire feeder will stop welding shortly after the
arc is struck.
C. WIRE DIRECTION CONTROL
Controls the direction the wire is being fed through the feeder. UP to return wire to the spool.
DOWN to feed wire to the gun.
D. VOLT / WIRE SPEED METER
A three-digit meter is provided to set and monitor the welding procedure. The arc voltage is
displayed in volts, and the wire feed speed is displayed in either inches/minute or meters/min-
ute.
E. METER SELECTION SWITCH
When the METER SELECTION SWITCH is set to “VOLTS” position, the meter reads the arc
voltage setting as adjusted by the VOLTAGE CONTROL. The three “WIRE SPEED” positions
include an “ENGLISH” position, for the meter readings in inches/minute; and “LO” and “HIGH”
range “METRIC” positions, for meter readings in meters/minute.
F. VOLTAGE CONTROL
Increases and decreases the voltage in conjunction with the METER SELECTION SWITCH.
Adjustments can be made before and during the welding operation.
G. WIRE SPEED (CURRENT) CONTROL
Increases and decreases the wire speed in conjunction with the METER SELECTION
SWITCH. Adjustments can be made before and during the welding operation.
H. ACTUAL / SET VALUE JOG BUTTON
After the weld has been started the “ACTUAL” voltage or wire speed can be read by press-
ing the “SET- ACTUAL” push button. The METER SELECTION SWITCH must be set in the
desired position. When the push button is not being operated the meter continues to read the
“SET” value.
I. COLD INCH SWITCH
The COLD INCH SWITCH when pressed energizes the wire feeder but not the gas solenoid
or the welding power source.
J. WIRE HOT / COLD SELECTOR
The two position switch performs a dual function. In the “down” position the wire may be fed
electrically cold. In the “up” position the wire is electrically hot when feeding and the contact
circuit is controlled only by the WELD ON-OFF SWITCH.
K. WELD ON / OFF
The “OFF” position allows the operator to rotate the machine without welding to check the
wire placement. The “ON” position will start the entire weld operation based on the operators
settings, including machine rotation.