Miller XR Python Panduan Pemilik - Halaman 14
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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 875 ipm (22.2 mpm) with 3 3/4 turns.
Micro Switch
The micro switch assembly consists of a normally open micro switch and
solder-attached 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 gun and wire feeder motors
will begin feeding wire. Retract the screw
accordingly until the system is deactivated
and adjusted to the operators' liking.
Drive Roll and Idler Rolls
The Python
comes standard with a knurled drive roll and a grooved idler
®
roll, which will handle both steel and aluminum wire with diameters from
.030-1/16 inch. Optional insulated V-groove drive rolls are also available for
aluminum wire if desired (see optional kits).
Drive roll tension is accomplished with a unique spring-loaded pressure
screw. The Python
comes from the factory with the pressure adjustment
®
screw preset.
NO ADJUSTMENT REQUIRED FOR ANY WIRE SIZE AND ALLOY
Drive Roll Installation/Removal
Note: Neither of the handles needs to be
removed to access the drive or idler rolls.
1. Pull the cam lever away from the idler
roll. This will relieve the pressure against
the drive roll (as shown in Figure 1).
XR™ Python
Owner's Manual - Page 2
®
Cam Lever
Figure 1