Lincoln Electric K2447-3, K2447-2, K2447-1 User Manual

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GMAW

IM875

MK 091-0564

Push-Pull Gun

September 2005

Rev A.

 

 

 

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

 

 

 

 

 

 

Python is a registered trademark of MK Products

 

 

 

 

 

 

 

 

 

 

 

 

Copyright © 2005 Lincoln Global Inc.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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

Lincoln Electric K2447-3, K2447-2, K2447-1 User Manual

 

 

 

 

 

 

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

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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

Safety Considerations ..............................................................

....... i-iii

Installation

Section A

Technical Specifi cations

 

Support Equipment Required

 

Gun Lead Connections

 

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

 

Safety Warnings

 

Warranty

 

THIS PAGE INTENTIONALLY BLANK

Section A

Installation

 

Technical Specifications

 

Wire Capacity

 

.030" - .045" (0.6mm - 1.2mm) solid and hard wire

 

.030" - 1/16" (0.8mm - 1.6mm) aluminum and cored wire

 

Wire Speed

 

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

 

Shipping Weight (approximate) - Air Cooled

 

15ft. (4.5m)

13.09 lbs. (5.94 Kg)

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

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