Owner`s Manual
Contents
1. 25 4 mm Used with Flex Barrel cups 621 0465 and 621 0466 on Air Cooled models only Finned Copper Cups 3 8 9 5mm 621 0248 1 2 12 7mm 621 0249 5 8 15 8mm 621 0250 Heavy Duty Finned Copper Gas Cups x Cupl D CupSize Page 5 8 15 8mm 621 0251 3 4 19 0mm 621 0252 Standard furnished with Air Cooled gun Python Owner s Manual Page 5 Air Cooled Cup Air Cooled Cups for Python Water Cooled Gun x CuplD 3 8 9 5mm 621 0170 1 2 12 7mm 621 0159 5 8 15 8mm 621 0160 To use air cooled gas cups you must use a cup retaining nut 449 0193 and a water cooled cup adapter 621 0101 Water Cooled Cups for Python Water Cooled Gun CupSize Cup LD Bag No 5 8 15 9mm Standard furnished with gun Flex Barrel Gas Cups 8 1 2 12 7mm 621 0465 5 8 15 8mm 621 0466 Works with Air Cooled models only Tip Extender Gun Barrel Liners Part Number Description Steel wire only 030 1 16 0 8 0 9mm Barrel Assemblies 225 Amps 450 Amps l o at 3 i 225 Amp Air Cooled 60 Water Cooled 60 U P N 003 2272 P N 003 2317 kg 45 Standard on AC Standard on WC Optional on AC fr 300 Amps Z00Amp Water Cooled Air Cooled Only P N 003 2495 12 P N 003 2380 I Optional on AC Optional on WC Air Cooled The Python air cooled guns 234 series come standard wit2. D wiper and pin C The resistance should vary from 0 5K ohms as the potentiometer is turned Check the resistance across pin D wiper and pin G The resistance should vary from 5K 0 ohms as the potentiometer is turned Testing the Micro Switch Using the gun amphenol connector check for continuity across pins E and F when the trigger is pressed W Clockea Amphenol Connector Viewed From front of connector Python Owner s Manual Page 9 THIS PAGE INTENTIONALLY BLANK Section F Appendices Diagrams Parts List F 0 010 210 EE 12 BILO Materna T T 13 FOM BJ ASSEN DNV vere 14 Rear Body Assembly Air Cooled 15 Rear Body Assembly Water Cooled 16 Barrel Assembly Air Cooled 17 Barrel Assembly Water Cooled 18 Cup Insulator and O Ring Maintenance 19 Lead Assembly Air Cooled 20 Lead Assembly Water Cooled 21 Spiral Wrap Installation anannannannannnnennennnnnnrennenorronrsnrerrerrrene 22 EEA 25 Python Owner s Manual Page 11 Python Head Assembly Air Cooled Water Cooled NOILVTIVLSNI 404 390v44NS LOVLNOO OL G
3. MERCIAL INDUSTRIAL USERS AND FOR OPERATION BY PERSE TRAINED AND EXPERIENCED IM THE USE AND MAINTENANCE WELDING EQUIPMENT AND NOT FOR CONSUMERS OR DCONSUN USE MK PRODUCTS WARRANTIES DO NOT EXTEND TO AND RE SELLER 15 AUTHORIZED TO EXTEND MK PRODUCTS WARRANT TO AMY CONSUMER USE OF OTHER THAN GENUINE MK PRODUC CONSUMABLES PARTS AND ACCESSORIES MAY TMVALIDATE YE PRODUCT WARRANTY August 1 2010 THIS PAGE INTENTIONALLY BLANK MIL PRODUCTS www mkproducts com 16882 Armstrong Ave Irvine California 92606 TEL 949 863 1234 FAX 949 474 1428
4. Stuck valve Do NOT use a hammer or wrench to open a cylinder valve that cannot be opened by hand Notify your supplier Mixing gases NEVER try to mix any gases in a cylinder NEVER refill any cylinder Cylinder fittings should never be modified or exchanged 3 Hose Prohibited use Never use hose other than that designed for the specified gas A general hose identification rule is red for fuel gas green for oxygen and black for inert gases Use ferrules or clamps designed for the hose not ordinary wire or other substitute as a binding to connect hoses to fittings No copper tubing splices Use only standard brass fittings to splice hose Avoid long runs to prevent kinks and abuse Suspend hose off ground to keep it from being run over stepped on or otherwise damaged Coil excess hose to prevent kinks and tangles Protect hose from damage by sharp edges and by sparks slag and open flame Examine hose regularly for leaks wear and loose connections Immerse pressured hose in water bubbles indicate leaks Repair leaky or worn hose by cutting area out and splicing Do NOT use tape 4 Proper Connections Clean cylinder valve outlet of impurities that may clog orifices and damage seats before connecting regulator Except for hydrogen crack valve momentarily pointing outlet away from people and sources of ignition Wipe with a clean lintless cloth Match regulator to cylinder Before connecti
5. for fuel gas open to less than one turn to permit quick emergency shut off Use pressure charts available from your supplier for safe and efficient recommended pressure settings on regulators Check for leaks on first pressurization and regularly thereafter Brush with soap solution Bubbles indicate leaks Clean off soapy water after test dried soap is combustible E User Responsibilities Follow all Safety Rules Remove leaky or defective equipment from service immediately for repair Read and follow user manual instructions F Leaving Equipment Unattended Close gas supply at source and drain gas G Rope Staging Support Rope staging support should not be used for welding or cutting operation rope may burn 1 3 ARC WELDING Comply with precautions in 1 1 1 2 and this section Arc Welding properly done is a safe process but a careless operator invites trouble The equipment carries high currents at significant voltages The arc is very bright and hot Sparks fly fumes rise ultraviolet and infrared energy radiates weldments are hot and compressed gases may be used The wise operator avoids unnecessary risks and protects himself and others from accidents A Burn Protection Comply with precautions in 1 2 The welding arc is intense and visibly bright lts radiation can damage eyes penetrate lightweight clothing reflect from light colored surfaces and burn the skin and eyes Skin burns resemble
6. inspection or service of equipment shut OFF all power and remove line fuses or lock or red tag switches to prevent accidental turning ON of power Disconnect all cables from welding power source and pull all 115 volts line cord plugs Do not open power circuit or change polarity while welding If in an emergency it must be disconnected guard against shock burns or flash from switch arcing Leaving equipment unattended Always shut OFF and disconnect all power to equipment Power disconnect switch must be available near the welding power source For selecting a quality product We want you lo take pride in QUA operating this product as much pride as we have in bringing the product to you Please Examine Carton and Equipment For Damage Immediately When this equipment is shipped title passes to the purchaser upon receipt by the camier Consequently claims for material damaged in shipment must be made by the purchaser against the transportation company at the time the shipment is received Please record your equipment identification information below for future reference This information can be found on your machine nameplate Model Name amp Number Code amp Serial Number Date of Purchase Whenever you request replacements parts for or information on this equipment always supply the information you have recorded above Read this Owner s Manual completely before attempting to use this equipment Save this man
7. Optional Kits 005 0713 eee 005 0714 Insulated Drive Roll Kits are used to prevent preheating of the aluminum wire which may soften it and clog the liner This picking up of current at the drive rolls rather than at the contact tip is usually not a problem unless using too large of a contact tip or excessively oxidized aluminum wire Insulated Grooved Drive Roll Kit For 030 0 8mm dia aluminum wire and insulated idler roll assy Insulated Grooved Drive Roll Kit For 035 0 9mm dia aluminum wire and insulated idler roll assy Insulated Grooved Drive Roll Kit For 040 1 0mm dia aluminum wire and insulated idler roll assy Insulated Grooved Drive Roll Kit For 3 64 1 2mm dia aluminum wire and insulated idler roll assy Insulated Grooved Drive Roll Kit For 062 1 6mm dia aluminum wire and insulated idler roll assy Handle Kil asia 005 0640 Includes insulated groove drive roll saa 005 0716 Includes insulated groove drive roll nib icm dS i 005 0717 Includes insulated groove drive roll T X 005 0718 Includes insulated groove drive roll peo Po E T 005 0719 Includes insulated groove drive roll nain uc 005 0699 Includes left and right handles screws and drive roll door Trigger KiILuuu llasa EE NE EE 005 0694 Trigger kit includes a spring and
8. Warranties expressed or implied LIMITED WARRANTY MK Products inc Irvine California warrants that all new and unused equipment furmshed by MK Products is free from defects in vorkmanshep and materia as of the ime and place of delivery by MK Products No warranty is made by MK Products with respect to trade acoessones or other items manufactured by others Such trade accessories and other beris ara sold subject to the marrari tes of their resp rbve Manufacturers IF any MK Products Warranty does not apply to components having normal useful life of less than one 1 Year such as relay points wire conduit tungsten and welding gun parts that come in contact with the wading wire including gas cups gas cup Insulators and contact Gps where falura does not result from defect in workmanship or material ME Products shall exclusively remedy the limited warranty ar any duties with respect to the quality of goods based upon the following opbans 1 repair 2 replacement 3 where authorized in writing by MK Products the reasonable cost of repair or replacement at our Irvine California plant s a matter of general policy andy MK Products may honor an oragenal users warranty claims pri warranbed equipment in the event of aile resulting fram a defect within the following periods fom the date oF delivery of equipment to the orginal user 1 Power Supplies and Wire Feed Cabinets J years 2 Weldheads Coolers Posi
9. acute sunburn those from gas shielded arcs are more severe and painful DON T GET BURNED COMPLY WITH PRECAUTIONS 1 Protective Clothing Wear long sleeve clothing in addition to gloves hat and shoes As necessary use additional protective clothing such as leather jacket or sleeves flameproof apron and fire resistant leggings Avoid outer garments of untreated cotton Bare skin protection Wear dark substantial clothing Button collar to protect chest and neck and button pockets to prevent entry of sparks 2 Eye and Head Protection Protect eyes from exposure to arc Eyes may be damaged by radiant energy when exposed to the electric arc even when not looking in the direction of the arc Never look at an electric arc without protection Welding helmet or shield containing a filter plate shade no 12 or denser must be used when welding Place over face before striking arc Protect filter plate with a clear cover plate Cracked or broken helmet or shield should NOT be worn radiation can be passed through to cause burns Cracked broken or loose filter plates must be replaced IMMEDIATELY Replace clear cover plate when broken pitted or spattered Flash goggles with side shields MUST be worn under the helmet to give some protection to the eyes should the helmet notbe lowered overthe face before an arc is struck Looking at an arc momentarily with unprotected eyes particularly a high intensity gas shielded ar
10. and idler rolls A supply of these parts should be maintained on hand The number of units in operation and the importance of minimal down time will determine to what extent spare parts should be stocked on hand See the recommended spare parts list for the most commonly replaced parts If repairs do become necessary qualified shop maintenance personnel can easily replace any part Maintenance Tools Contact Tip Removal Tool 931 0044 Drive Roll Removal Tool 931 0100 Recommended Spare Parts List _ Qty PartNo Description O O AD DRIVE ROLL REMOVAL TOOL lt KNURLED DRIVE ROLL 931 0100 511 0101 IDLER ROLL f MICRO SWITCH ASSY 005 0686 P 005 0701 Python Owner s Manual Page 7 Section E Troubleshooting Trouble Cause Remedy Input power fuse in EET No wire feed at feeder control box blown P gun ne not Micro switch defective not Replace switch Check operating i e no i being activated switch for operation slave motor or brake solenoid Broken electrical cable ME for continuity Motor control fuse in Check motor leads for feeder control box blown shorts then replace fuse Bad potentiometer Check potentiometer with meter Check motor and Broken electrical cable potentiometer wires for continuity No wire feed at gun feeder operating properly See specific cabinet control box owner s Bad speed control PCB manual for speed control operati
11. sensitivity adjustment screw replacement for all Python CobraMAX guns Micro SWIEtCB KIT uu uu l Y A eo eid een Eos de ege 005 0701 Replacement micro switch assembly for all Python CobraMAX guns Potentiomelter KI u oue l L ao oder cene eeu e Uo ee gane sue abes ro reuera dua 005 0695 Replacement potentiometer assembly for all Python CobraMAX guns Barrel Insulator Replacement Kit 005 0696 Includes replacement barrel insulator and taper lock nut Conduits Flat spiral steel conduit for steel amp cored wire 519 0208 NNN 15 ft 4 5m 015210 Ce 25 ft 7 6m 0 15 02 19 A 35 ft 10 7m DVI 50 ft 15 2m Snake Skins Snake Skin protective covers are now standard on all guns You may order spare replacement covers to protect the lead assy of the gun when the factory one becomes damaged or worn It can easily be replaced in the field by means of Velcro Snake Skin Cover 13ft for 15ft leads 931 0110 Snake Skin Cover 23ft for 25ft leads 931 0122 Snake Skin Cover 33ft for 35ft leads 931 0132 Snake Skin Cover 48ft for 50ft leads 931 0123 Python Owner s Manual Page 4 Contact Tips 5 To remove contact tip when using full water cooled gas cup P N 621 0065 contact tip removal tool P N 931 0044 must be used He
12. HICH MAY CAUSE SERIOUS AND PERMANENT EYE DAMAGE AND WHICH MAY DAMAGE ANY EXPOSED SKIN AREAS Wear helmet with safety goggles or glasses with side shields underneath appropriate filter lenses or plates protected by clear cover glass This is a must for welding or cutting and chipping to protect the eyes from radiant energy and flying metal Replace cover glass when broken pitted or spattered Medical first aid and eye treatment First aid facilities and a qualified first aid person should be available for each shift unless medical facilities are close by for immediate treatment of flash burns of the eyes and skin burns Wear protective clothing leather or asbestos gauntlet gloves hat and high safety toe shoes Button shirt collar and pocket flaps and wear cuffless trousers to avoid entry of sparks and slag Avoid oily or greasy clothing A spark may ignite them Flammable hair preparations should not be used by persons intending to weld or cut Hot metal such as electrode stubs and work pieces should never be handled without gloves Ear plugs should be worn when working on overhead or in a confined space A hard hat should be worn when others work overhead B Toxic Fume Prevention WARNING The use of this product may result in exposure to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm Adequate ventilation Severe discomfort illness or death ca
13. ICANT EN CE QUI REGARDE CET EQUIPMENT ET LES PRODUITS A ETRE EMPLOYES ET SUIVEZ LES PROCEDURES DE SECURITE DE VOTRE EMPLOYEUR LESEN SIE UND BEFOLGEN SIE DIE BETRIEBSANLEITUNG DER ANLAGE UND DEN ELEKTRODENEINSATZ DES HER STELLERS DIE UNFALLVERH TUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN Python Owner s Manual page 26 Keep your head out of fumes e Use ventilation or exhaust to remove fumes from breathing zone Los humos fuera de la zona de res piraci n e Mantenga la cabeza fuera de los humos Utilice ventilaci n o aspiraci n para gases e Gardez la t te l cart des fum es e Utilisez un ventilateur ou un aspira teur pour ter les fum es des zones de travail e Vermeiden Sie das Einatmen von Schweibrauch e Sorgen Sie f r gute Ba und Enti ftung des Arbeitsplatzes e Mantenha seu rosto da fumaga Use ventilag o e exhaust o para remover fumo da zona respirat ria eta Ahb5osgtNS KEo5cutct F e RAPHECTHINEBALIT KS OTM echte E e TETHRIB S BLAR e daz BE CIS HALO es xdosvs 23 HB AAS sai 71204714 EDF HRAL As ce Tag dul a e i GA ice jen d Auch Jal Ad odi uat Mail ge MEN a 48 Turn power off before servicing Desconectar el cable de ali mentaci n de poder de la m quina antes de iniciar cualquier servicio e D branchez le courant avant l entre tien Strom var Wartungsarbeiten abschalten Netzstrom v llig ott nen Maschine anha
14. NNOdWOD DNIMI2071 AVIYHL AIddV Y NOILVTIVLSNI 404 ADVAYNS LOVLNOD OL XOTVON GNNOdWOD AlddV Vi NOILVTIVLSNI 404 39V44NS LOVLNOO OL 3SV339 GNNOdWOD AlddV wi p ds H 0800 liZ V d piepuejs 2200 LLZ V uonduoseg ONHed O ON Python Owner s Manual page 12 ISS 9U xo0r ruonngis LOLO 0ZE z Jeal9 DMV 6 uonensu eqn 8p00 ze4 unenee LSS 8 9 Okt Z8 Ud H4 19S Senge Z uoud qoux19 o2 89Z0 2Er ba LSS 8 x Ob b Z8 lud H3J9S vSZ0 61 EN EZ pue za O M Assy pog Jeoy L8ZZ E00 SLE swa ou SEPN DU 14 ejpueH o y Assy Apog Je9y 68ZZ 00 UOUYJ d JOJON dens Gesl ser JM 10d lo uoS peeds Assy 9690 800 B E X OZ 8 XeH M J S E9L LEb yoo joog Assy ESLZ 00 Op v X 8 1 JEPINOUS JOS zz9l iev ON Assy pogiuo4 Lzcem 8 1 X ZE E EMO Uld 9L00 lzb O M Assy pog yuous 80LZ 00 LSS S EXZL L OHS JOS esro see L Si ES ER ES D ES EB B FERRI SES 00 Wondise mu mem r quiassy pe H p loo2 J9JEM pue p l oo2o Jiy Python Owner s Manual page 13 Python Front Body Assembly P N 003 2271 Air Cooled P N 003 2108 Water Cooled Front Body Assembly Not available separately 325 0206 10 24 x 3 8 PH Screw 333 0082 10 Lock Washer 0 29 x 0 047 x 0 32 Comp Spring Items 3 4 9 available as package kit Part number 005 0686 Python Owner s Manual page 14
15. Python Rear Assembly Air Cooled PIN 003 2289 APPLY SILICONE LUBRICANT FOR INSTALLATION Air Cooled Rear Body Assembly No Qty PartNo Description af Notavailableseparatey 6 1 4024 TieWrapsora Python Owner s Manual page 15 Python Rear Assembly Water Cooled P N 003 2287 2 m APPLY SILICONE LUBRICANT FOR INSTALLATION Water Cooled Rear Body Assembly No Qty PartNo Description 15 Notavailable separately gt 2 s 3000 O Ring 1451Dx 07W Python Owner s Manual page 16 Python Barrel Assembly Air Cooled PIN 003 2272 0 050 0 060 RING GROOVE S SK R Apply silicone lubricant to items 4 and 5 before installing Air Cooled 60 Curved Barrel Assembly Qi Part Number Description Notavalabie separately 303 0094 O Ring 301 ID x 07 W Python Owner s Manual page 17 Python Barrel Assembly Water Cooled P N 003 2317 RING GROOVE REF Apply silicone lubricant to items 5 and 6 before installing Water Cooled 60 Barrel Assembly HE Not available separately 003 2213 Assy Taper Lock Barrel 261 0141 Insulator Barrel 261 0381 Insulator Cup with five O Rings 303 0010 O Ring 489 ID x 07 W Tip HD Spray 060 303 0094 O Ring 301 ID x 07 W Python Owner s Manual page 18 CUP INSULATOR AND O RING MAINTENANCE CAUTION Power off the coolant pump before disassemblin
16. ai PYTHON PRODUCTS Product Python Manual 091 0580 Serial 12010001 Voltage Rating 24 VDC Revision Jan 2012 Rev C Gun models 234 xxx 235 xxx CE 225 Ampere Air Cooled 450 Ampere Water Cooled Push Pull Welding Guns Table of Contents Salely Considerations sv i iii letz rie BEE Section A Technical ee er Le EE 1 Support Equipment ReQUIre u uuu u is id 1 Coolant RecommendalionsS a ia 1 Gun Lead Connections RII I Rr rr ar n nn nrnnnnnnnnnn 1 JEAN Section B CE EEE EEE EN EE n uu eminent 2 GOMFOISENd SEUNS aar 2 TrIGOer ANUS merce oda 2 Drive Roll and Idler De EE 3 PACCES SOMES san Section C ONA 4 CoS sv 4 RE Ski ORRE II A EE 4 Col il be isaac 5 ENN SNE 5 BEL 6 Maintenance ccc ccc cccccceccecccccccccceccceceuuecaeceecueeueeneeceeaseaueaees Section D PEN ENE NPE 7 Recommended Spare Parts US uer T Belege Section E TROUDISSNOOUNG GUAN 9 Tesino TRE GUN pe E 9 AS rn Section F Diagrams Ras US iba s pus 11 MENN 12 FE NNN 25 Safety Warnings Warranty Declaration of Conformity for European Community CE Products Note I This information is provided for units with CE certification see rating label on unit Manufacturer s Name M K P rod u cts y nc 16882 Armstrong Ave Irvine CA 92606 Declares that the product Pyt h O n conforms to the following Directives and Standards Directi
17. allation 033 0929 Gun End Air Cooled AE 4 cc e a Power Cable Python Owner s Manual page 22 Python Lead Assembly Spiral Wrap Installation 033 0929 Gun End Water Cooled Ring 431 1660 Python Owner s Manual page 23 Python Lead Assembly Spiral Wrap Installation 033 0929 Cabinet End Air and Water Cooled Spiral Wrap p n 261 0094 me A Se Python Owner s Manual page 24 Python Electrical AJOA HOL lOd H IOL d IC HOL MOIS AN UMOJg ang g USED WW L SHUM EI AS 70 sss SUOILOUNY LEO pee yoo Amphenol Connector Viewed from front of connector MOJI A UMOJg anid USSJK SHUM KRIS Do O O O O O O O JOLOOUUOZ joueuduuy puy ISUuIQOO Python Owner s Manual page 25 Spanish AVISO DE PRECAUCION French ATTENTION German WARNUNG Portuguese ATENCAO Do not touch electrically live parts or electrode with skin or wet clothing e Insulate yourself from work and ground e No togue las partes o los electrodos bajo carga con la piel a ropa moja da e Aislese del trabajo y de la tierra O Ne laissez ni la peau ni des v te ments mouill s entrer en contact aver des pi ces sous tension e Isolez vous du travail et de la terre e Ber hren Sie keine stromf hrenden Teile oder Elektroden mit Ihrem K rper oder feuchter Kleidung e isolieren Sie sich von den Elektroden
18. avy Duty Contact Tip 3 8 Diameter Wire Size TipID Arc TipLength PartNo 030 0 8mm 041 1 0mm Spray 1 57 39 9mm 621 0390 25 Short 1 82 46 2mm 621 0396 25 Spray 1 57 39 9mm 621 0391 25 621 0391 250 621 0391 500 035 0 9mm 044 1 1mm 1 82 46 2mm 621 0397 25 045 1 1mm 053 1 35mm 1 82 46 2mm 621 0398 25 3 64 1 2mm 053 1 35mm Spray 1 57 39 9mm 621 0392 25 621 0392 500t1 035 0 9mm 044 1 1mm 3 64 1 2mm 060 1 5mm 621 0392 250 Spray 1 57 39 9mm 621 0393 25 621 0393 250 621 0393 500T 1 16 1 6mm 074 1 9mm Spray 1 57 39 9mm 621 0394 25 085 2 16mm Spray 621 0395 25 Use of tip removal tool is recommended t Also sold in quantities of 250 This size tip furnished with gun TT Also sold in quantities of 500 Spring Loaded Contact Tip 3 8 Diameter 030 0 8 mm 041 1 0 mm Spray 1 57 39 9 mm EA 621 0331 035 0 9 mm 044 1 1 mm Spray 1 57 39 9 mm 621 0332 3 64 1 2mm 060 1 5 mm 1 57 39 9 mm 621 0334 1 16 1 6 mm 074 1 9 mm Spray 1 57 39 9 mm EA 621 0335 3 8 Diameter Flex Barrel Tip Recommended for Flex Barrel Wire Size TipID Arc Tip Length Qty Part Number 035 0 9 mm 044 1 1 mm Spray 1 0 25 4 mm EA 621 0481 25 Short 1 0 Spra EA 0
19. c can cause a retinal burn that may leave a permanent dark area in the field of vision 3 Protection of Nearby Personnel Enclose the welding area For production welding a separate room or enclosed bay is best In open areas surround the operation with low reflective noncombustible screens or panels Allow for free air circulation particularly at floor level Viewing the weld Provide face shields for all persons who will be looking directly at the weld Others working in area See that all persons are wearing flash goggles Before starting to weld make sure that screen flaps or bay doors are closed B Toxic Fume Prevention Comply with precautions in 1 2B Generator engine exhaust must be vented to the outside air Carbon monoxide can kill C Fire and Explosion Prevention Comply with precautions in 1 2C Equipment s rated capacity Do not overload arc welding equipment It may overheat cables and cause a fire Loose cable connections may overheat or flash and cause afire Never strike an arc on a cylinder or other pressure vessel It creates a brittle area that can cause a violent rupture or lead to such a rupture later under rough handling D Compressed Gas Equipment Comply with precautions in 1 2D E Shock Prevention Exposed electrically hot conductors or other bare metal in the welding circuit or in ungrounded electrically HOT equipment can fatally shock a person whose body becomes a conducto
20. cable is equipped with a 1 2 ring lug which attaches to the top hole on the side of the power block Supplied with this gun is a 3 8 16x5 8 bolt a 3 8 spring lock washer and a 5 8 flat washer to attach the ring lug to the power block Power Cable Water Cooled Python water cooled gun utilizes a power water cable with a 46 AWG cable inside a 5 16 diameter hose When water is used with this cable and the 10 water cooled gas cup P N 621 0065 the system is rated at 450 amps 60 duty cycle The gun end is threaded into the gun body These connections utilize a conductive sealant and are tightened with torque requirements of 100 5 IN LB Python Owner s Manual Page 1 Section B Conduit The Python gun 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 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 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 The hose retainer is re usable and
21. can be removed and re installed as needed The other end is connected to the center fitting on the power block Electric Cable A multi conductor control cable is used on the Python 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 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 Trigger Sentry the lower end of the handle providing up to 800 ipm e Adjustment Screw with 3 3 4 turns ocatia Micro Switch The micro switch assembly consists of the micro switch and leads Trigger Sensitivity a The amount of trigger lever travel can be shortened m for a quicker or more responsive action Zei A more sensitive trigger lever is produced by reducing the gap between the trigger lever and the micro s
22. circuit contact with cylinders including third rails electrical wires or welding circuits They can produced short circuit arcs that may lead to a serious accident See 1 3C ICC or DOT marking must be on each cylinder It is an assurance of safety when the cylinder is properly handled Identifying gas content Use only cylinders with name of gas marked on them do not rely on color to identify gas content Notify supplier if unmarked NEVER DEFACE or alter name number or other markings on a cylinder It is illegal and hazardous Empties Keep valves closed replace caps securely mark MT keep them separate from FULLS and return promptly Prohibited use Never use a cylinder or its contents for other than its intended use NEVER as a support or roller Locate or secure cylinders so they cannot be knocked over Passageways and work areas Keep cylinders clear of areas where they may be stuck Transporting cylinders With a crane use a secure support such as a platform or cradle Do NOT lift cylinders off the ground by their valves or caps or by chains slings or magnets Do NOT expose cylinders to excessive heat sparks slag and flame etc that may cause rupture Do not allow contents to exceed 55 degrees C 130 degrees F Cool with water spray where such exposure exists Protect cylinders particularly valves from bumps falls falling objects and weather Replace caps securely when moving cylinders
23. d tighten Insulator Barrel Correct Installation Incorrect Installation Python Owner s Manual page 19 Python Lead Assembly Air Cooled REFI 9 TIGHTEN WITH 5 5 IN LBS TORQUE EA d Deg AS A I ne s No N l 10 x S AN SEE PROCEDURE 6033 0929 AN APPLY QUICK DRYING HOSE LUBRICANT NEAR NON FITTING END OF MEM FOR INSTALLATION OF ITEM 5 es V N ITEM NOT SHOWN FOR CLARITY Lead Assembly Air Cooled No Qty Description 15 PartNo Ze Part No 35 Part No 50 Part No 261 0094 13 931 0122 931 0132 AAA 005 0690 005 0691 005 0740 1 1 Wshr 391 x 875 x 063 BS 331 0777 Hose Retainer is re usable and can be removed and re installed as needed Power Cable includes copper wrap P N 701 0053 1 7 1 zl 10 1 Python Owner s Manual page 20 Python Lead Assembly Water Cooled 5p TIGHTEN WITH 100435 IN LBS TORQUE 3X SEE PROCEDURE 8033 0927 Lead Assembly Water Cooled Qty Description 45 PartNo 25 PartNo 35 Part No 261 0094 261 0094 13 931 0110 931 0122 931 0132 Tie Wrap 411 0045 431 1898 AE AO AA T No ES E E Assy Controller Cable 005 0690 005 0691 005 0740 005 0692 1 Assy Power Cable W C 6 005 0387 15 005 0387 25 005 0387 35 005 0387 50 Hose Retainer is re usable and can be removed and re installed as needed Python Owner s Manual page 21 Python Lead Assembly Spiral Wrap Inst
24. e arc can also decompose trichloroethylene and perchloroethylene vapors to form phosgene DO NOT WELD or cut where solvent vapors can be drawn into the welding or cutting atmosphere or where the radiant energy can penetrate to atmospheres containing even minute amounts oftrichloroethylene or perchloroethylene C Fire and Explosion Prevention Causes of fire and explosion are combustibles reached by the arc flame flying sparks hot slag or heated material misuse of compressed gases and cylinders and short circuits BE AWARE THAT flying sparks or falling slag can pass through cracks along pipes through windows or doors and through wall or floor openings out of sight of the goggled operator Sparks can fly many feet To prevent fires and explosion Keep equipment clean and operable free of oil grease and in electrical parts of metallic particles that can cause Python Owner s Manual Page i short circuits If combustibles are in area do NOT weld or cut Move the work if practicable to an area free of combustibles Avoid paint spray rooms dip tanks storage areas ventilators If the work cannot be moved move combustibles at least 35 feet away out of reach of sparks and heat or protect against ignition with suitable and snug fitting fire resistant covers or shields Walls touching combustibles on opposite sides should not be welded on or cut Walls ceilings and floor near work should be protected by
25. g adjustment in the feeder is used simply to keep the wire slightly taut so it will not pull off the spool while feeding wire The high torque 24VDC gun motor is controlled by a solid state speed control located in the feeder and a pot located in the gun The gun motor potentiometer and micro switch are connected to the cabinet control box via a control cable and Amphenol connector If this cable becomes damaged a variety of symptoms can occur depending on which wire s break To test check each wire for continuity and shorts Remember the micro switch in the gun activates both the slave motor and gun motor circuits in the cabinet Therefore if the slave motor and brake solenoid operate but the gun does not look more toward the gun motor s 24 V circuits speed control control cable or the gun motor If nothing operates look more toward the slave motor s input micro switch leads or micro switch Testing The Gun Reference the W clocked gun wiring diagram on the Python electrical diagram for information about pin outs and locations Motor Check Remove the gun connector from the cabinet Using the gun Amphenol connector check the resistance across pins A and B motor leads If an open circuit more than K ohms or short exist less than 2 ohms exists check the motor leads and motor independently Testing the Potentiometer W Clocked Using the gun amphenol connector check the resistance across pin
26. g water cooled barrels 1 Unscrew Retaining Nut and slide back on barrel 2 Using a firm pull and twist action the Water Cooled Gas Cup or Air Cooled Gas Cup Assembly can be removed from the Cup Insulator 3 Inspectthe Cup Insulator and o rings included with Insulator for wear and proper lubrication It is considered good practice to replace all o rings at the same time 4 Toremove the Cup Insulator it must be unscrewed and pulled from the barrel Use a rag or towel due to o ring lubrication and wrap it around the Cup Insulator Unscrew and pull when completed unthreaded from barrel Be sure the Insulator is fully unscrewed from the threads Pulling the Insulator over barrel threads will damage the threads on the Insulator Inspect o rings on barrel for wear and lubrication It is considered good practice to replace all o rings at the same time 5 To install the Cup Insulator it must be pushed all the way onto the barrel then screwed onto the threads If necessary place small amount of o ring lubricant on the inside diameter of the Cup Insulator this will help it slide onto the barrel Push the Insulator onto the barrel until it bottoms out screw onto barrel threads The Insulator MUST be all the way onto the barrel to avoid assure proper coolant passage and from blocking the gas outlet orifices 6 Push Water Cooled Gas Cup or Chrome Nut Cup Adapter and Gas Cup Assembly onto Cup Insulator Slide Retaining Nut forward an
27. h a 60 curved barrel The barrel assembly locks to the Python body using the patented EZ Lock system Water Cooled The Python water cooled guns 235 series come standard with a 60 curved water cooled barrel assembly Optional 12 and 18 Straight and Curved Barrel Assemblies 12 Straight Air Cooled Barrel Assembly 003 2332 12 Curved 45 Air Cooled Barrel Assembly 003 2333 12 Straight Water Cooled Barrel Assembly 003 2318 12 Curved 45 Water Cooled Barrel Assembly 003 2319 18 Straight Air Cooled Barrel Assembly 003 2334 18 Curved 45 Air Cooled Barrel Assembly 003 2335 18 Straight Water Cooled Barrel Assembly 003 2320 18 Curved 45 Water Cooled Barrel Assembly 003 2321 12 Flex Barrel Air Cooled Assembly 003 2495 12 Python Owner s Manual Page 6 Section D 18 Flex Barrel Air Cooled Assembly 003 2495 18 24 Flex Barrel Air Cooled Assembly 003 2495 24 36 Flex Barrel Air Cooled Assembly 003 2495 36 Barrel Removal and Installation Note Turn off
28. heat resistant COVers or shields Fire watcher must be standing by with suitable fire extinguishing equipment during and for some time after welding or cutting if 1 Appreciable combustibles including building construction are within 35 feet 2 Appreciable combustibles are further than 35 feet but can be ignited by sparks 3 Openings concealed or visible in floors or walls within 35 feet may expose combustibles to sparks 4 Combustibles adjacent to walls ceilings roofs or metal partitions can be ignited by radiant or conducted heat Hot work permit should be obtained before operation to ensure supervisor s approval that adequate precautions have been taken After work is done check that area is free of sparks glowing embers and flames An empty container that held combustibles or that can produce flammable or toxic vapors when heated must never be welded on or cut unless container has first been cleaned in accordance with industry standards This includes a thorough steam or caustic cleaning or a solvent of water washing depending on the combustible s solubility followed by purging and inerting with nitrogen or carbon dioxide and using protective equipment Water filling just below working level may substitute for inerting A container with unknown contents should be cleaned see paragraph above Do NOT depend on sense of smell or sight to determine if it is safe to weld or cut Hollo
29. ine cord with a ground lead is provided with the equipment for connection to a switch box connect the ground lead to the grounded switch box If a three prong plug is added for connection to a grounded mating receptacle the ground lead must be connected to the ground prong only If the line cord comes with a three prong plug connect to a grounded mating receptacle Never remove the ground prong from a plug or use a plug with a broken ground prong 2 Connectors Fully insulated lock type connectors Python Owner s Manual Page iii should be used to join welding cable lengths 3 Cables Frequently inspect cables for wear cracks and damage IMMEDIATELY REPLACE those with excessively worn or damaged insulation to avoid possibly lethal shock from bared cable Cables with damaged areas may be taped to give resistance equivalent to original cable Keep cable dry free of oil and grease and protected from hot metal and sparks 4 Terminals and Other Exposed Parts Terminals and other exposed parts of electrical units should have insulating covers secured before operation 5 Electrode Wire Electrode wire becomes electrically HOT when the power switch of gas metal arc welding equipment is ON and welding gun trigger is pressed Keep hands and body clear of wire and other HOT parts 6 Safety Devices Safety devices such as interlocks and circuit breakers should not be disconnected or shunted out Before installation
30. lten N o opere com as tampas removidas e Desligue a corrente antes de fazer servico e N o toque as partes el tricas nuas e KE E EE EK Gd ETA AE POMC EFRRAL 7 TF St e BREMEN e sto SHE AHL Aia A Sul Jl cuit AE AO allt e Do not operate with panel open or guards off No operar con panel abierto o guardas quitadas e N op rez pas avec les panneaux ouverts ou avec les dispositifs de protection enlev s e Anlage nie ohne Schutzgeh use oder Innenschutzverkleidung in Betrieb setzen e Mantenha se afastado das partes moventes e N o opere com os paineis abertos ou guardas removidas AC HIE AG ER E L WIKMWjES LU VA CTE ua e MEAT DERES ABTA E e ido Bel Neg YS OFA AG Amb Y cuts UN jas da Qu ye Ale EET AVISO DE PRECAUCION French ATTENTION German WARNUNG Portuguese ATENCAO LEIA E COMPREENDA AS INSTRUGOES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO E SIGA AS PRATICAS DE SEGURANGA DO EMPREGADOR ES MN BD 1 N DEREE IRA EPEMLT TF SU CL TRHORSRMEL EST FSU EE TE 3 AG WK PE St oe IK EE IE FB ETH E EECHER o xjgo SHE AIXAM SABIA HA SIX PAR Asia vet Jarl palal A4 d Catia aud y gil d y anti s i ill al lalai al y Can ii Python Owner s Manual page 27 LIMITED WARRANTY Effective August 1 2010 This warranty supersedes all previous MK Products warranties and is exclusive with no other quarantees or
31. n result from fumes vapors heat or oxygen enrichment or depletion that welding or cutting may produce Prevent them with adequate ventilation NEVER ventilate with oxygen Lead cadmium zinc mercury beryllium bearing and similar materials when welded or cut may produce harmful concentrations of toxic fumes Adequate local exhaust ventilation must be used or each person in the area as well as the operator must wear an air supplied respirator For beryllium both must be used Metals coated with or containing materials that emit toxic fumes should not be heated unless coating is removed form the work surface the area is well ventilated or the operator wears an air supplied respirator Work in a confined space only while it is being ventilated and if necessary while wearing an air supplied respirator Gas leaks in a confined space should be avoided Leaked gas in large quantities can change oxygen concentration dangerously Do not bring gas cylinders into a confined space Leaving confined space shut OFF gas supply at source to prevent possible accumulation of gases in the space if downstream valves have been accidentally opened or left open Check to be sure that the space is safe before reentering it Vapors from chlorinated solvents can be decomposed by the heat of the arc or flame to form PHOSGENE a highly toxic gas and other lung and eye irritating products The ultraviolet radiant energy of th
32. ng check that the regulator label and cylinder marking agree and that the regulator inlet and cylinder outlet match NEVER Connect a regulator designed for a particular gas or gases to a cylinder containing any other gas Tighten connections When assembling threaded connections clean and smooth seats where necessary Tighten If connection leaks disassemble clean and retighten using properly fitting wrench Adapters Use a CGA adapter available from your supplier between cylinder and regulator if one is required Use Python Owner s Manual Page ii two wrenches to tighten adapter marked RIGHT and LEFT HAND threads Regulator outlet or hose connections may be identified by right hand threads for oxygen and left hand threads with grooved hex on nut or shank for fuel gas 5 Pressurizing Steps Drain regulator of residual gas through suitable vent before opening cylinder or manifold valve by turning adjusting screw in clockwise Draining prevents excessive compression heat at high pressure seat by allowing seat to open on pressurization Leave adjusting screw engaged slightly on single stage regulators Stand to side of regulator while opening cylinder valve Open cylinder valve slowly so that regulator pressure increases slowly When gauge is pressurized gauge reaches regulator maximum leave cylinder valve in following position for oxygen and inert gases open fully to seal stem against possible leak
33. on Loose or no cable Check all power connections connections Check power supply owner s manual for location and type of contactor signal required i e closing or 115VAC Welding power source Check power source Dirty or worn conduit ROW ou Diaper conduit Wire feeds Wrong size contact tip See contact tip table erratically Check for lock washer Idler roll stuck under idler roll or replace if damaged Bad potentiometer Check with meter Check potentiometer Broken electrical cable wires for continuity or short Wire feeds but welding wire is not energized Contactor control cable loose or in wrong position Wire feeds one speed only See specific cabinet Bad speed control control owner s manual for speed control operation Wi Ik tof di wasiq aqe Place groove in idler roll ire walks out o p toward top drive rolls Rear wire guide missing Replace wire guide Python Owner s Manual Page 8 Troubleshooting Guide Regardless of which gun or feeder used all MK Products push pull guns operate on the same principle The slave motor in the feeder runs at a fast constant speed but has very low torque It is always trying to feed more wire than the gun motor wants and when the motor gets all it wants it slows the slave motor preventing a bird s nest Because of the low torque produced by the slave motor a brake system is used to prevent wire overrun rather than tension The dra
34. r DO NOT STAND SIT LIE LEAN ON OR TOUCH a wet surface when welding without suitable protection To protect against shock Keep body and clothing dry Never work in damp area without adequate insulation against electrical shock Stay on a dry duckboard or rubber mat when dampness or sweat cannot be avoided Sweat sea water or moisture between body and an electrically HOT part or grounded metal reduces the body surface electrical resistance enabling dangerous and possibly lethal currents to flow through the body 1 Grounding the Equipment When installing connect the frames of each unit such as welding power source control work table and water circulator to the building ground Conductors must be adequate to carry ground currents safely Equipment made electrically HOT by stray currents may shock possibly fatally Do NOT GROUND to electrical conduit or to a pipe carrying ANY gas or a flammable liquid such as oil or fuel Three phase connection Check phase requirement of equipment before installing If only three phase power is available connect single phase equipment to only two wires of the three phase line Do NOT connect the equipment ground lead to the third live wire or the equipment will become electrically HOT a dangerous condition that can shock possibly fatally Before welding check ground for continuity Be sure conductors are touching bare metal of equipment frames at connections Ifa l
35. rive roll as shown in 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 gun with one hand or on a table top with the other hand give the removal tool a quick snap turn in the CLOCKWISE DIRECTION 3 Once the drive roll is loose continue to spin drive roll in the clockwise direction to remove the drive roll from the gun Figure 2 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 3 Tighten idler Roll Zr m Towards Top Lock Washer Idler Arm Screw Spring Figure 3 NOTE Lock washer must be under idler roll or it will not turn freely Python Owner s Manual Page 3 Section C Accessories A gas flow control mechanism i e solenoid or valve is required so the Python can be used on Cobra wire feeders The following kits are available depending on the wire feeder used The factory set times in seconds for normal and latched trigger functions is 0 5 pre purge and 1 0 post purge Gas Trigger Control Kit 115V Gas Trigger Control Kit 42V
36. tioners and Push Pull Guns 1 year 3 Spool Guns and Spool Gun Madules 180 days 4 Repairs Exchanges Ports errem DU days 16882 Armstrong Ave Irvine CA 92606 Tel 949 863 1234 Fax 949 474 1428 PRO D U CTS www mkproducts com Classification of any Item into Me foregoing categories shall be at sole discretion of MK Products Notification of any failure must be mi im wring within 30 days of such faliure A copy of rne invoice showing me date of sal must accompany prod returned for warranty pelr or replacement All equipment returned to MA Products for service must ba prop packaged to guard aaner damage fram ship lpg MK Products nat be responsible for any damages resulting from shipping Narmal surface transportation charges one ay for products tetun for warranty repair or replacement will be borme by MK Products exc for products sold to foreign markets AMY EXPRESS WARRANTY NOT PROVIDED HEREIM AND ANY IMPL WARRANTY GUARANTY OR REPRESENTATION AS TO PERFORMAN AND ANT REMEDY FOR BREACH DF CONTRACT WHICH BUT FOR TI PROVISION MIGHT ARISE BY IMPLICATION OPERATION OF La CUSTOMOF TRADE OR COURSE OF DEALING INCLUDING ANY TMP WARRANTY OF MERCHANTABILITY OR OF FITNESS F R PARTICUL PURPOSE WITH RESPECT TO ANY AND ALL EQUIPMENT FURNISF BY Mk PRODUCTS ISEXCLUDED AND DISCLATMED BY MK PRODUC EXCEPT 45 EXPRESSLY PROVIDED BY Mk PRODUCTS IN WRITII MK s PRODUCTS ARE INTENDED FOR ULTIMATE PURCHASE BY CC
37. ual and keep it handy for quick reference Pay particular attention to the safety instructions we have provided for your protection Section A C Installation Technical Specifications Wire Capacity 030 045 0 6mm 1 2mm solid hard wire and cored wire 030 1 16 0 mm 1 6mm aluminum Wire Speed 800 IPM 20 3 mpm max Duty Cycle 60 All ratings are using Argon gas 225 Amps 25 Volts Air Cooled 450 Amps 25 Volts Water Cooled Support Equipment Required e C V or C C power source of sufficient capacity for your needs e Regulated gas supply and hoses e Properly sized power leads from power source to wire feeder and ground e Water source and hose capable of providing a minimum of 1 quart 95 liter min at 45 p s i when using water cooled guns Coolant Recommendations Use Cobra Coolant Aluminum Protection P N 931 0060 Cobra Coolant does not contain reactive sulphur or chlorine and does not react with copper brass or aluminum The coolant flow rate should be a minimum of 15 GPH 1 qt min between 35 and 45psi Contact the re circulator manufacturer for specifications on pressure Gun Lead Connections Power Cable Air Cooled A 2 power cable is used on the Python gooseneck gun The gun end of the cable is stripped to the copper strands and wrapped with a copper strip A setscrew holds the cable securely in the gun body with torque requirements of 55 60 in Ib The cabinet end of the
38. und dem Erdboden e N o toque partes el tricas e elec trodos com a pele ou roupa molha da Isole se da pega e terra S hO WR KES X 1 HI L 7PENEKTMNEULIE Ke k Z fk F 36489 ATUIMELIT FAL JEGER EE JET LE ESE A Se wi ACEL ER AER ord SYSE Xe S mue xu Sex ne e 24 HAE Sai Ae AB e ui left oe VO AU O AU de P da ue VIE Gig Keep flammable materials away Mantenga el material combustible fuera del rea de trabajo e Gardez l cart de tout mat riel inflammable Entfernen Sie brennbarres Material Mantenha inflamaveis bem guarda dos o RAPT CGOOATORKFER RMHILTREHEHA e 89 9218 HEI ET ects 288 Sc AIX ue yg Oe JAG ALA l g ua e Wear eye ear and body protection e Prot jase los ojos los o dos y ei cuerpo e Prot gez vos yeux vos oreilles et votre corps e Tragen Sie Augen Ohren und K r perschutz Use protec o para a vista ouvido e corpo 0 H ERUMECHMMELTE GAME CARA HRARFRERAA ex HY F 23978 HEAL dp due de iliy als cit yl ua una READ AND UNDERSTAND THE MANUFACTURER S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BE USED AND FOLLOW YOUR EMPLOYER S SAFETY PRAGTIGES SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL FABRICANTE PARA EL USO DE ESTE EQUIPO Y LOS CONSUMIBLES QUE VA A UTILIZAR SIGA LAS MEDIDAS DE SEGURIDAD DE SU SUPERVISOR LISEZ ET COMPRENEZ LES INSTRUCTIONS DU FABR
39. ves Low Voltage Directive 2006 95 EC Electromagnetic Compatibility EMC Directive 2004 108 EC Standards Electromagnetic Compatibility EMC EN 60974 10 2007 Torches And Guns For Arc Welding EN 60974 7 2005 SAFETY CONSIDERATIONS ELECTRIC ARC WELDING EQUIPMENT CAUTION READ BEFORE ATTENPTING INSTALLATION OPERATION OR MAINTENANCE OF THIS EQUIPMENT 1 1 INTRODUCTION This equipment is intended for ultimate application by commercial industrial users and for operation by persons trained and experienced in the use and maintenance of welding equipment Operation should not be undertaken without adequate training in the use of such equipment Training is available from many public and private schools or similar facilities Safe practices in the installation operation and maintenance of this equipment requires proper training in the art a careful study of the information provided with the equipment and the use of common sense Rules for safe use are generally provided by suppliers of welding power sources compressed gas suppliers and electrode suppliers Careful compliance with these rules will promote safe use of this equipment The following Safety Rules cover some of the more generally found situations READ THEM CAREFULLY In case of any doubt obtain qualified help before proceeding 1 2 GENERAL PRECAUTIONS A Burn Prevention ELECTRICARC WELDING PRODUCES HIGH INTENSITY HEAT AND ULTRAVIOLET RADIANT ENERGY W
40. w castings or containers must be vented before welding or cutting They can explode Explosive atmospheres NEVER weld or cut where the air may contain flammable dust gas or liquid vapors such as gasoline D Compressed Gas Equipment The safe handling of compressed gas equipment is detailed in numerous industry publications The following general rules cover many of the most common situations 1 Pressure Regulators Regulator relief valve is designed to protect only the regulator from overpressure it is not intended to protect any downstream equipment Provide such protection with one or more relief devices Never connect a regulator to a cylinder containing gas other than that for which the regulator was designed Remove faulty regulator from service immediately for repair first close cylinder valve The following symptoms indicate a faulty regulator Leaks if gas leaks externally Excessive Creep if delivery pressure continues to rise with downstream valve closed Faulty Gauge if gauge pointer does not move off stop pin when pressurized nor returns to stop pin after pressure release Repair Do NOT attempt repair Send faulty regulators for repair to manufacturer s designated repair center where special techniques and tools are used by trained personnel 2 Cylinders Cylinders must be handled carefully to prevent leaks and damage to their walls valves or safety devices Avoid electrical
41. water circulator prior to loosening and removing barrels To remove the barrel assembly loosen the patented EZ Lock taper lock nut until it is clear of the threads Pull barrel out of the gun body To replace a barrel assembly push the barrel assembly into the gun body until it clicks to a stop To assure proper seating of the barrel open the drive idler roll door in the top of the handle The rear face of the barrel should now be flush with the gun body Take care not to damage the O rings when inserting into the body Tighten taper lock nut assembly firmly so that barrel cannot rotate Barrel Rotation To rotate a barrel assembly loosen the patented EZ Lock taper lock nut assembly no more than 1 turn Rotate barrel to the position of your choice and retighten taper lock nut assembly firmly so that the barrel cannot rotate WARNING Do not attempt to weld without the barrel being tightly secured in the gun body or damage to the barrel or body may result Maintenance Periodic Maintenance Your Cobramatic system is designed to provide years of reliable service Maintenance of the gun will normally consist of a general cleaning of the wire guide system including barrels drive rolls and conduits at regular intervals Remove spatter build up from inside of nozzles with a hardwood stick The only parts on the Cobramatic system that are subject to normal wear are the conduit contact tips gas cups front body liners wire guides drive
42. witch lever By turning in the trigger sensitivity adjustment screw it closed the gap between the trigger lever and the micro switch lever Score adjusted aut ol nape This will enable the operator to increase the pre setting the mean swich lowor for shore trigger moon sensitivity of the trigger lever sensitivity Python Owner s Manual Page 2 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 hard wire and aluminum wire with diameters from 030 to 1 16 inch and steel from 030 to 045 inches 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 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 d
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