MK Products Python LX Torch - Manual (Page 9)

Python ® LX Owner's Manual - Page 2
Gas Hose
The gas hose is pushed over a barbed fitting on the end of the gun body and
secured by twisting the hose retainer to the end of the hose (shown below).
The hose retainer is re-usable and can be removed and re-installed as
needed. The cabinet end of the gas hose uses our standard gas fitting (1/8” -
27 nps).
Water Hose
If so equipped; one end of the water hose is is pushed over a barbed fitting
and secured by twisting the hose retainer to the end of the hose. The hose
retainer is re-usable and can be removed and re-installed as needed. The
other end is connected to the center fitting on the power block.
Control Cable
A multi-conductor control cable is used on the Python LX gun. The gun end
of the cable is secured with a cable clamp and the wires are connected to the
potentiometer, the micro switch, the motor and the gun body mechanically.
Slack is left in the electric cable as it exits the back of the gun to prevent
cable and/or wire breakage. The cabinet end has a seven pin "W" clocked
amphenol connector.
Section B Operation
General
The Python LX gun maintains a constant, steady, uniform wire feed speed,
regardless of curved or looped wire conduit. The constant push exerted
by the slave motor in the cabinet, combined with the pull of the gun motor,
causes the wire to literally float friction-free through the wire conduit. The
24VDC gun motor is controlled by a three and three-quarter (3-3/4) turn
potentiometer in the gun handle.
Controls and Settings
Potentiometer
The laterally-positioned potentiometer is located in the lower end of the
handle, providing up to 800 ipm with 3-3/4 turns.
Micro Switch
The micro switch assembly consists of the micro switch, and leads.
Trigger Sensitivity
The amount of trigger lever travel can be shortened
for a quicker or more responsive action.
A more sensitive trigger lever is produced by
reducing the gap between the trigger lever and the
micro switch lever. By turning-in the trigger sensitivity
adjustment screw, it closed the gap between the
trigger lever and the micro switch lever.
This will enable the operator to increase the
sensitivity of the trigger lever.
Sensitivity Adjustment
With the wire feeder turned on (with or without
welding wire loaded), turn the screw in until the
micro-switch is activated. Once activated, the torch
and wire feeder motors will begin feeding wire.
Retract the screw accordingly until the system is
deactivated and adjusted to the operators' liking.
Trigger Sensitivity Adjustment
Screw Location
Screw adjusted out of trigger,
pre-setting the micro-switch
lever for shorter motion
sensitivty.