Lincoln Electric IM773 Push-Pull Gun PYTHON K2211-2, K2211-3, K2212-1, K2212-2 & K2212-3 - Manual (Page 12)

Python Owner's Manual - Page 2
Gas Hose
The gas hose is secured over the barbed gas fitting with a tie wrap. 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 secured over the barbed water
fitting with a tie wrap and the other end is connected to the center fitting on
the power block.
Electric Cable
A seven conductor control cable is used on the Python
® gun. The gun end of
the control cable is secured to the gun with a boot clamp and soldered into
the pot assembly and micro switch connectors. Slack is left in the electric
cable as it exits the back of the gun to prevent cable breakage. The cabinet
end has a seven pin “W” clocked amphenol connector.
Section B Operation
General
The Python ® 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 level 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 tortch and wire feeder motors will begin
feeding wire. Retract the screw accordingly until
the system is deactivated and adjusted to the
operators' liking.