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GMAW |
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MK 091-0564 |
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Push-Pull Gun |
September 2005 |
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Rev A. |
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OPERATOR'S MANUAL
Python® -
Model number K2447-1, K2447-2, K2447-3
Safety Depends on You
Lincoln arc welding equipment is designed and built with safety in mind. However, your overall safety can be increased by
proper installation...and thoughtful operation on your part. DO NOT
INSTALL, OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT. And, most importantly, think before you act and be careful.
OPERATOR’S MANUAL
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Python is a registered trademark of MK Products |
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Copyright © 2005 Lincoln Global Inc. |
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World's Leader in Welding and Cutting Products
Sales and Service through Subsidiaries and Distibutors Worldwide
Cleveland, Ohio 44117-1199 U.S.A. TEL: 216.481.8100 FAX: 216.486.1751 WEB SITE: www.lincolnelectric.com
Python-Plus Owner's Manual Page i
Python-Plus Owner's Manual Page ii
Python-Plus Owner's Manual Page iii
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0LEASE %XAMINE #ARTON AND %QUIPMENT &OR $AMAGE )MMEDIATELY
7HEN THIS EQUIPMENT IS SHIPPED TITLE PASSES TO THE PURCHASER UPON RECEIPT BY THE CARRIER #ONSEQUENTLY CLAIMS FOR MATERIAL DAMAGED IN SHIPMENT MUST BE MADE BY THE PURCHASER AGAINST THE TRANSPORTATION COMPANY AT THE TIME THE SHIPMENT IS RECEIVED
0LEASE RECORD YOUR EQUIPMENT IDENTIFICATION INFORMATION BELOW FOR FUTURE REFERENCE 4HIS INFORMATION CAN BE FOUND ON YOUR MACHINE NAMEPLATE
-ODEL .AME .UMBER |
????????????????????? |
#ODE 3ERIAL .UMBER |
????????????????????? |
$ATE OF 0URCHASE |
????????????????????? |
7HENEVER YOU REQUEST REPLACEMENTS PARTS FOR OR INFORMATION ON THIS EQUIPMENT ALWAYS SUPPLY THE INFORMATION YOU HAVE RECORDED ABOVE
2EAD THIS /WNER S -ANUAL COMPLETELY BEFORE ATTEMPTING TO USE THIS EQUIPMENT 3AVE THIS MANUAL AND KEEP IT HANDY FOR QUICK REFERENCE 0AY PARTICULAR ATTENTION TO THE SAFETY INSTRUCTIONS WE
HAVE PROVIDED FOR YOUR PROTECTION
Table of Contents |
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Safety Considerations .............................................................. |
....... i-iii |
Installation |
Section A |
Technical Specifi cations |
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Support Equipment Required |
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Gun Lead Connections |
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Operation |
Section B |
General ............................................................. |
............................................. 2 |
Controls and Settings ............................................................. |
........................ 2 |
Trigger Adjustment .............................................................. |
............................. 2 |
Drive Roll and Idler Rolls ............................................................. |
.................. 2 |
Accessories |
Section C |
Optional Kits ............................................................. |
...................................... 4 |
Snake Skins ............................................................. |
...................................... 4 |
Contact Tips ............................................................. |
...................................... 5 |
Gas Cups .............................................................. |
........................................... 5 |
Barrels ............................................................. |
............................................... 6 |
Maintenance |
Section D |
Periodic Maintenance |
6 |
Recommended Spare Parts List |
7 |
Troubleshooting |
Section E |
Troubleshooting Guide |
9 |
Testing The Gun |
0 |
Appendices.............................................................. |
............. Section F |
Diagrams / Parts List |
11 |
Mechanical |
12 |
Electrical |
16 |
MK Repair Stations |
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Safety Warnings |
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Warranty |
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THIS PAGE INTENTIONALLY BLANK
Section A |
Installation |
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Technical Specifications |
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Wire Capacity |
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.030" - .045" (0.6mm - 1.2mm) solid and hard wire |
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.030" - 1/16" (0.8mm - 1.6mm) aluminum and cored wire |
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Wire Speed |
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800 IPM (20.3 mpm) Max. at rated feeder Input Voltage (120VAC / 42VAC) |
Duty Cycle - 100% (All ratings are using Argon Gas)
200 Amps/25 Volts |
Air cooled standard |
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Shipping Weight (approximate) - Air Cooled |
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15ft. (4.5m) |
13.09 lbs. (5.94 Kg) |
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25ft. |
(7.6m) |
19.29 lbs. (8.29 |
Kg) |
50ft. |
(15.2m) |
29.9 lbs. (13.19 |
Kg) |
Torch weight (less leads)
Air/Water cooled - 2.5 lbs. (1.13 kilogram)
Support Equipment Required
C.V. or C.C. Power Source of suffi cient capacity for your needs.
Regulated gas supply and hoses.
Properly sized power leads from power source to wire feeder and ground.
Gun Lead Connections
Power Cable
A #2 AWG power cable is used on the Python-Plus. The gun end of the cable has a fitting crimped to the copper cable strands. This fitting is then threaded into the gun body. The cabinet end of the power cable is incorporated into the Power/Gas Adaptor.
Conduit
The Python-Plus comes standard with a poly-lined conduit, for feeding aluminum wire. The longer fitting with a shallow groove is used on the gun end. A set screw located on top of the gun handle secures the conduit in place. The cabinet end of the conduit is incorporated into the Power/Gas Adaptor.
Gas Hose
The gas hose is pushed over a barbed fi tting on the gun body and secured with a plastic tie wrap. The cabinet end of the gas hose is incorporated into the Power/Gas Adaptor.
Electric Cable
A multi-conductor control cable is used on the Python-Plus. 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 of the control cable uses a 7-Pin, Amphenol connector.
Python-Plus Owner's Manual - Page 1
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 torch motor, causes the wire to literally float friction-free through the wire conduit. The 24VDC torch motor is controlled by a three and three-quarter (3 3/4) turn potentiometer in the torch 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 microswitch lever.
This well 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
General
The Python gun 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 IS REQUIRED FOR ALL SIZES
AND TYPES OF WIRES
Python-Plus Owner's Manual - Page 2
Drive Roll Installation/Removal
NOTE: Neither of the handles needs to be removed to access the Drive or Idler Rolls.
Cam Lever
1.Pull the Cam Lever away from the idler roll. This will relieve the pressure against the drive roll (as shown in Figure 1).
Figure 1
2.Align the Drive Roll Removal Tool (P/N 931-0100) over the flats of the drive roll (as shown in Figure 2). Hold the torch with one hand or on a table top, with the other hand give the Removal Tool a quick snap-turn in the CLOCKWISE DIRECTION
Figure 2
3.Once the drive roll is loose, continue to spin drive roll in the clockwise direction to remove the drive roll from the torch.
4.Install a new drive roll on the left-hand threaded shaft. The drive roll will self-tighten when it is feeding wire.
Idler Roll Installation and Removal
(Reference Figure 3)
1.Using a slot type screwdriver, loosen idler screw, taking care not to lose lock washer under idler roll.
2.Insert new idler roll and lock washer onto screw, insuring that idler groove is toward top and lock washer is beneath.
Figure 3
3. Tighten.
NOTE: Lock washer must be under idler roll or it will not turn freely.
Python-Plus Owner's Manual - Page 3