Lincoln Electric IDEALARC CV-250 User's Manual
Contents
1. Section Factory Field Installed Options C 1 Compatible Lincoln Equipment C 1 Maintenance terrre tnter dte te inc ee Section D Safety Precautlons iiaea e eid d dee eal D 1 General Maintenance es D 1 Machine and Circuit Protection D 1 Troubleshooting IILI sassa asas aasawa waska sasa Section E Safely Precautions mu tee eee une d E 1 How to Use Troubleshooting Guide E 1 Built in Diagnostic Routines and Error Codes Troubleshooting Guide E 2 Machine Troubleshooting Guide E 3 Options Troubleshooting Guide E 6 Procedure for Replacing PC Boards E 7 Control and Meter PC Board Troubleshooting Procedures E 7 Output Voltage Fault Protection Snubber Circuit and K857 Remote Control Checks E 8 PIEPICIIC RM Section F Parts Manual ree etie eee pa eer Appendix A 1 TECHNICAL SPECIFICATIONS IDEALARC CV 250 INPUT THREE PHASE ONLY Standard Voltage 208 230 460 3 60 230 460 575 3 60 Duty Cycle 100 Duty Cycle NEMA Class 100 6096 Duty Cycle 10096 Duty Cycle Welding Current Voltage Range Continuous 30A 7V 300A 32V DC Efficiency at 100 Load 7296 Idle Power 800W INSTALLATION Input Current at Rated Output 10096 Duty Cycle 56 51 26 6096 Duty Cycle 62 56 28 100 Duty Cycle 51 26 20 60 Duty2. AE TE Rr de fit D BB EL AMENER RAR J BUR BS SAAD HAS Aix PAS EFSA HEHE Saal 91 Lala aul J allg alati oig Gail guet ag ls Gras LINCOLN B World s Leader in Welding and Cutting Products Sales and Service through Subsidiaries and Distributors Worldwide Cleveland Ohio 44117 1199 U S A TEL 216 481 8100 FAX 216 486 1751 WEB SITE www lincolnelectric com
3. GNNOYD WHLSAS V OL DIAGRAMS HOLIMS NELSHITOA waqasa TUIM es NOILISOd T OOT NI NMOHS HOLIMS ZH09 OSZ AO WWYDVIG ONINIM F 1 CV 250 LINCOLN E F 2 Z99075 HOUNOS HHMOd AHL JO IONHHdNV NId VL HHL OL WHLdVGV IOWLNOO 6 81 9 SLONSN 7984 V AO NOILVITVLSNI HHL IOWLNOO HLONSN 882 HHL dO ASNA uddOu WHMOd NANL ALINVIOd HDNVHO OL HAILISOd SGOXLOHIH SMOHS NWWV3NWOVIG a N NOLLVOTI IddV dO H IDAD ALNA GNV LNHNN O AOA GHZIS Hd LSOW ATAVO ONIG ISM WN DIAGRAMS CV POWER SOURCE TO AN LN 7 AND K857 F 2 Hd IqVO HGORLOHS IH MHOM OL A IHNHSSV 4 IHVO LOdNI 087v HHLdVGIV IOWXLNOO HLOWHA 981 IVNOILdO JAIM VWOL NT L NT IOWLLNOO ALOWAA HO4NnOS AAMOd 1981 IVNOLILdO TONHHdINY YI I AO AO TIIA NWO uruoeu S4 X20HS OIHLONIS esn rieasur suoszed z p j ou Burqo uuoo snj u3 YOITMS qo uuoostp eua Bursn e ONINSVM w ey zemod zzo uini CV 250 LINCOLN E DIAGRAMS F 3 CV POWER SOURCE TO A K867 UNIVERSAL ADAPTER F 3 859025 t 6 81 9 L983 HHIM oa OL SNIN a pc SL
4. HOUNOS AHMOd HHL AO IONHHdWV NId TI HHL OL HHIdVGOIV IONXMLNOO HLOWHY 798 V NOILVITVLSNI IONLNOO ALONSA LS8M AHL HSN 2 N HO4NOS NHMOd LV SH IHVO HAOM 4ZXGO CLLOW IH HSHHAH3 uddO WHMOd NUu l ALIUYWIOd HONWHO OL HAILISOd HGOWLOH IH SMOHS WVHOVIG t N NOILVOI IddV dO HW IDADO ALNA LNAAAND AOA GHZIS A4 LSAN W IHVO ONIG IZM H UISVO HGOWLOSN IH NHOM OL q N TAIM uHdW P v9vX SZ N I TVNOILdO IOWXWLNOO WILONHHN v98X IVNOILdO TONHHANY HODnOS AAMOd NId L IO LLNOO ALONSA I AD AO LS83 IVNOILdO TIIA NWO eurgoeu sru3 XooHs OIHIONTH ZO esn reasur pinous suoszed e 19peej u3 Bur3o uuoo esnj eui YOITMS 32euuoosrp bursn e ONINSVM w u3 o3 1emod ndug jjo uini CV 250 LINCOLN E F 6 DIAGRAMS CV POWER SOURCE TO AN LN 25 K444 1 F 6 99028 W S O OIHO ONVISANTO CHTIVLSNI SI LIM HHdWO D 8131 HHL NAHM u LOHu SAVM IV HAV S IVNINAHL HO4NOS MHHMOd AHL HLONWSHN OL HOLIMS a3LOWSW TIVOOTI HOUNOS WHMOd HHL HOLIMS NHLdVGV TOULNOO ALONAHU V98M HHL AO H IDVLdHOH34 NId 9 HHL O NOILdO T PYVYH HLIM SZ NT HHL WOA NId 9 HHL LOHNNOO NWHLdVGOV
5. Selects either output current or arc voltage to be displayed on the digital meter E DIGITAL VOLTMETER AMMETER Displays the CV 250 output current or the arc voltage 42 VOLT CIRCUIT BREAKER 115 VOLT CIRCUIT BREAKER LOCAL REMOTE SWITCH WIRE FEEDER VOLTMETER SWITCH rom NOTE Due to voltage drops in the welding cables and at cable connection points the actual arc voltage may be lower than that displayed on the voltmeter Use welding cables of the proper capacity and make sure all connec tions are tight to minimize this effect F 42 VOLT CIRCUIT BREAKER Protects the 42 volt 41 42 circuit in the wire feeder receptacle from overloads and shorts If this circuit breaker opens the CV 250 will work normally However any equipment powered by the 42 volt circuit will not work G 115 VOLT CIRCUIT BREAKER Protects the 115 volt 31 32 circuit in the wire feeder receptacle from overloads and shorts If this circuit breaker opens the CV 250 will work normally However any equipment powered by the 115 volt circuit will not work H LOCAL REMOTE SWITCH Determines whether the welding voltage is controlled at the CV 250 or controlled remotely by a remote output control such as a K857 CV 250 LINCOLN B 4 J WIRE FEEDER VOLTMETER SWITCH OPERATION B 4 When welding electrode negative most Innershield electrodes set the switch to This switch selects the polarity of the wire feed
6. hands on For details write Lincoln Welding School 22801 St Clair Ave Cleveland Ohio 44117 1199 and ask for bulletin ED 80 or call 216 383 2259 and ask for the Welding School Registrar Lincoln Welding School BASIC COURSE 5 weeks of fundamentals 4 700 00 lorders of 50 or less before discount or orders outside of North America must be prepaid with charge check or money order in U S Funds Only l IPrices include shipment by 4th Class Book Rate for U S A Mainland Only Please allow up to 4 weeks for delivery IUPS Shipping for North America Only All prepaid orders that request UPS shipment please add 5 00 For order value 49 99 10 00 For order value between 50 00 amp 99 99 l 15 00 For order value between 100 00 amp 149 00 For North America invoiced orders over 50 00 amp credit card orders if UPS is requested it will be invoiced or charged to you at cost Outside U S A Mainland order must be prepaid in U S Funds Please add 2 00 per book for surface mail or 15 00 per book for air parcel post shipment METHOD OF PAYMENT Sorry No C O D Orders CHECK ONE Address _ Please Invoice only if order is over 50 00 I Check or Money Order Enclosed U S Funds only Telephone I _ Credit Card LIN L Tasa v Ep date L L I lise THIS FORM TO ORDER Books OR FREE INFORMATIVE CATALOGS Lincoln Welding School Titles I
7. Always wear dry insulating gloves FUMES AND GASES can be dangerous Keep your head out of fumes y Es Use ventilation or exhaust to remove fumes from breathing zone r WELDING SPARKS can cause fire or explosion 7 Keep flammable material away Do not weld on containers that have held combustibles ARC RAYS can burn 1 Wear eye ear and body protection Observe additional Safety Guidelines detailed throughout of this manual CV 250 LINCOLN B 2 OPERATION B 2 A CAUTION When using a CV 250 power source with wire feed ers there will be a small spark if the electrode con tacts the work or ground within several seconds after releasing the trigger When used with some wire feeders with the electrical trigger interlock in the ON position the arc might restart if the electrode touches the work or ground during these several seconds GENERAL DESCRIPTION The CV 250 is a constant voltage DC power source designed for the GMAW process with limited FCAW capability as well It features an industrial rating of 250 amps 30 volts at 100 duty cycle It complies with the requirements for a NEMA Class 100 power source It is available from the factory in one model only with no options other than input voltage or frequency RECOMMENDED PROCESSES AND EQUIPMENT The CV 250 is capable of solid wire welding within the rated output capacity of the machine It is also capa ble of w
8. ED 80 New Lessons in Arc Welding erar Information How to Read Shop Drawings Educational Video Information Orderfrom BOOK DIVISION The Lincoln Electric Company 22801 St Clair Avenue Cleveland Ohio 44117 1199 Telephone 216 383 2211 or for fastest service FAX this completed form to 216 361 5901 Procedure Handbook Twelfth Edition Incentive Management Signature as it appears on Charge Card LICHE NET MES L 1 51500 RH __ A ee New Approach to Industrial Economics 500 NA Lames F Lincoln Arc Welding _ American Century of John C Uincom 500 AC Foundation Book Information Welding Preheat Calculator 300 WC8 f rere PipeWedngCharts 450 EDD fe CE SUBTOTA LS i WARNING Spanish AVISO DE PRECAUCION French ATTENTION German WARNUNG Portuguese ATEN AO Japanese it is BIR Korean Do not touch electrically live parts or electrode with skin or wet clothing Insulate yourself from work and ground No toque las partes o los electrodos bajo carga con la piel o ropa moja da Aislese del trabajo y de la tierra Ne laissez ni la peau ni des v te ments mouill s entrer en contact avec des pieces sous tension Isolez vous du travail et de la terre Ber hren Sie keine stromf
9. IOWLNOO ALONSA vV98X HHL WIOVILdHOsW NId FI AHL OL HHdW P F8121 AHL LOHNNOO HOLIMS ALINVIOd SZ NT HOLIMS HOANOS WHMOd LV SH IHVO WHOM HCOMLOAIA SSWHAM wdidO WNHMOd Nu L ALINV IOd HONVHO OL HAILISOd 4GONLOH I4 SMOHS NWVHOVIG NOILWOIIddW AO H IDAO ALNA LNAAANO AOA GHZIS HH LSAN H ISVO ONIG ISM d TavOo sSGORHLOS IH 5nd XHOM OL uHdW P 8 TWNOILdO NOILdO HLIM WHOHH4 TAIM i Fr SZ NT NF gt z o H a HLOWEA vY98X IVNOILdO TONSHdWV HOA4NOS WHMOd fT I A9 A9 TIIA NWO eurgoeu sty Xo0HS OINIOSTH asn easur p nous suosied e Zepeey ey bur32euuoo esnj ey YOITMS 32euuoosrp ou Bursn u3 jjo 1 NOILOSNNOO NOLLdO I vvvYN HLIM SZ NT OL HOUNOS AAMOd I A2 A2 DIAGRAMS F 7 LINCOLN POWER SOURCE TO AN LN 742 F 7 MIA LNONJ SISVO NId PI M3IA uvas SIHVO NId tT ANY V AZ NOTLONOA aval NId WVADVIA ONIYIM zHilVIHdOWddV HAS LL a 9L 4 SL D 6007S v d 6 82 T Iv I LN3NdID S ANOA NI LNS3SsSHd LON HOVH ANW A INO WONSNHJHNH JOJ GSLSI AAY SNOILONNA CPA
10. Welding may produce fumes and gases hazardous to health Avoid breathing these fumes and gases When welding keep your head out of the fume Use enough ventilation and or exhaust at the arc to keep fumes and gases away from the breathing zone When welding with electrodes which require special ventilation such as stainless or hard facing see instructions on container or MSDS or on lead or cadmium plated steel and other metals or coatings which produce highly toxic fumes keep exposure as low as possible and below Threshold Limit Values TLV using local exhaust or mechanical ventilation In confined spaces or in some circumstances outdoors a respirator may be required Additional precautions are also required when welding on galvanized steel 5 b Do not weld in locations near chlorinated hydrocarbon vapors coming from degreasing cleaning or spraying operations The heat and rays of the arc can react with solvent vapors to form phosgene a highly toxic gas and other irritating products 5 c Shielding gases used for arc welding can displace air and cause injury or death Always use enough ventilation especially in confined areas to insure breathing air is safe Read and understand the manufacturer s instructions for this equipment and the consumables to be used including the material safety data sheet MSDS and follow your employer s safety practices MSDS forms are available from your welding distributor or from the manufactu
11. E 4 TROUBLESHOOTING E 4 Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE AREAS OF RECOMMENDED SYMPTOMS MISADJUSTMENTS S COURSE OF ACTION PROBLEMS Thermal Protection Indicator light is 1 Thermostat circuit has opened Allow machine to cool Be sure to on provide adequate ventilation for machine 2 Faulty Control PC Board See PC Board Troubleshooting Procedure Machine does not have maximum 1 Faulty Control PC Board 1 See PC Board Troubleshooting output Procedure 2 Voltage Adjust potentiometer 2 Check and replace if faulty defective 3 Voltage Adjust potentiometer Check and repair broken leads leads open Machine will not shut off 1 Defective power switch Replace Variable or sluggish welding arc 1 Poor work or electrode Check and clean all connections connection Welding leads too small Check table in this manual Welding current or voltage Check procedures for recommended too low settings Defective SCR bridge Check and replace if defective Digital meters do not light Faulty Meter PC board See PC Board Troubleshooting Or Procedure Digital meter display is incorrect Faulty Control PC Board See PC Board Troubleshooting Procedure CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests repairs safely contact your Local Lincoln Authorized Field Service Facility for technic
12. NOILISOd 1 OL HOLIMS IOWLNOO DANOS AAMOd LAS LIN SLOWEY I 68S83 ONISA AI a N ATAY NO ATISNSSSV GHLOSNNOD LON HWV GHLSIT LON SNId O N S IHVO L dNI dV s TO e Dal Z L NT ALIHVIOd GHdO Hd OL DANOS HHMOd NO HOLIMS ALIHNV IOd AALANLTOA HHGOHHH HAIM LAS DANOS AAMOd LV SH ISVO MNHOM HNGORLOS IH NSHHAWN uddO WHHMOd NANL ALINVIOd HONVHO OL HAILISOd HGORWNLOSWTIS SMOHS WvWaoviId a N NOLLVOI TddV 40 ATOAD ALNA INAXAND GHZIS LSAN H ISVO DNIGTHM W N HAIM CYL N I TIIN NWO IONSHdNWV Eu FI eurqgoeu s4 8 SRE a N esn plnous suosz d Atuo HOUNOS AAMOd N IOONI I 19pesj u3 Bur4o uuoo u3 uo zemod ay 0 330 UNI ONINSVM w CV 250 LINCOLN E DIAGRAMS F 8 K867 UNIVERSAL ADAPTER INSTALLATION AND CONNECTION INSTRUCTIONS F 8 98E6TS 06 9T MHIA LNOUA MHIA AWHA v NId YI S IHVO NId TTI ANW MAIA s3 IHVO NId vI MAIA LNONA H IoOVLddOHH NId YvI T8 W SL D SL D vd WHVdS N TESH TESB HHVdS N 28 1 Iv I 9 UHSHLVHIHO HO OV AOZT AOA GALVA HH LSAN GOHLAW ONILVIOSNI HHL AvC aavds IOWLNOO ONIG ISM TOULNOD
13. ONIG ISM pes EEE NUM Ew 228 Ba s EA LIDOWIO NHO5INL E NOILOHNNOO SISSVHO E NOILONnaA QNVONVIS avaT LNHWdInOH ANOA NI LNSSHHd LON HO HOVH A INO HONHAMAAU aod GaLSIT HWV SNOILONQ4H ASAHL IOWLNOO LOdLNO IOWLNOO LOAdLNO IOWLLNOO LAd LAO LIQOHIO HH9DINL NVHOVIG ONIYIM sLVIHWNdO HddV AHS UHHSLdVOV IVSHHAINQ HHL NI CASANN ANY AHSA ALV INSNI ANY Gaurin ss SV SNOILOSNNOO WHGTOS NO dWINO TE 62 HHL S4018NI SLINOAIO LNS3INHSdHGONI qHLVIOSI LON AWW NO AYN LINDID NHOOIHL HAVAS OW AvC gt OV ACH OW ASTT ALON MO IHH NMOHS HWV SNOIL NNA SNOILWN ISAA NId AOLOANNOD G4VGNVILS HHL WHLdVGV IVSAHAINN OL SNOILOSNNOO AHL SNWVHOVIG ONINIM LNAWdINOA SIVINdONddV HHL L INSNOO H IHVO HAIM OL SIHL ONITIVLSNI JAO HOANOS AAMOd ONIGTAM AHL AO HOLIMS WHMOd HHL NL DI NOILVHHdO HAIM AHAINOAA ASHIL HON fHOUNOS NHMOd AUHAH NI LNSS3Hd HWV SLIDONIO TIY LON HLIM CASN HH TIIM PMSLdVQV SIHL JAIM HOUNOS HHL AO WVHOVIG ONINIM AHL LINSNOO UHUIOVILdHOSsW AAAA SHIM HHL NI LNASAYd SLI OHIO VI HHL AO ANW OL SNOILOHNNOO SAWN OL NHS0 AHL MO IIV OL GQ4NOISSQ SI LI UH IOVILdsOSW SHIM NId vYl V HAVH HOIHM S
14. PRACTICES 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 FABRICANT 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 UNFALLVERHUTUNGSVORSCHRIFTEN DES ARBEITGEBERS SIND EBENFALLS ZU BEACHTEN Keep your head out of fumes Use ventilation or exhaust to remove fumes from breathing zone Los humos fuera de la zona de res piraci n Mantenga la cabeza fuera de los humos Utilice ventilaci n o aspiraci n para gases Gardez la t te l cart des fum es Utilisez un ventilateur ou un aspira teur pour ter les fum es des zones de travail Vermeiden Sie das Einatmen von Schweibrauch Sorgen Sie f r gute Be und Entl ftung des Arbeitsplatzes Mantenha seu rosto da fumaca Use ventilac o e exhaust o para remover fumo da zona respirat ria eti ADP5o5UtRcocuc 9 gt IC 38 U C Fu e Fe ik c EUR Bit A B sk eM SH7IAE e S XACE E AAS AH FAAA H4 27 amp oe dul ae f gaal bacs jaa jl 490 axial ah os uui ARA ge al ue Turn power off before serv
15. TISVO HGORLOS IH IO W LNOO LAdLNO HALONHA O 94 MOT LL OL HOUNOS AHMOd AO IVNIWUAL AYOM OL SLOANNOD NOILOSNNOD WHLHWLTOA AAAA SHIM IZ NOILOANNOD SWVN4 HOANOS AHMOd O GNO Q Nw EE LBA VV HUN OWA SIT SN O RE uuldvav TV SN res TVSAHAINN L98A Q IY LNdLNO ONIGTHM p IONHTHdNV a N O AO UFHLADOL LOHNNOO z _ NId I SHOUNOS WHMOd I AO AO NO Q380n LON SHNIHOVN TIV NO LIN amp SaHad LON Mvad INAAAND AHVI IIXQV WOWIXVW TVONVW NOIILOQWLSNI HOANOS AAMOd OL Hd 5 c SAWAT HSO ID OL AV IWN NOILWIOSI HSN LNdLNO OSNIGTSM OJ IVNOIS V NUNLHY LVHL SAAAHHA HAIM AOA A ULVOAGIAIGNI GVH I GHSNNN HOVH ALWINSNI H42UnOS NMHMOd LV SHATAVO HAOM HGO RLLOS IH HSHHAH 3 4 ddO NHMOd NANL ALIWNVIOd HONVHO OL HAILISOd HGORLOH IH SMOHS NWWVUWOVIG NOILVOI IddV dO H IDAO ALNA LNHAANID AOA GQHZIS LSNW H IHVO ONIG ISM O dHVdS S c8 O T8 I AO AO TIIA NW eurqgoeu spy eorAies OOHS OINIOXTH sn easur p nous suosied 9 3epeeg eui bur32euuoo 910794 u3 3 YOITMS 30euuoosIp eua eoxnog xemog eua zemod yndut jjo amp d HO4nOS AHMOd CV 250 LINCOLN E DIAGRAMS CV POWER SOURCE TO A K867 K775 LN 7 F 4 699025 6 81 9 IOW
16. explode Sparks and spatter are thrown from the welding arc Wear oil free protective garments such as leather gloves heavy shirt cuffless trousers high shoes and a cap over your hair Wear ear plugs when welding out of position or in confined places Always wear safety glasses with side shields when in a welding area Connect the work cable to the work as close to the welding area as practical Work cables connected to the building framework or other locations away from the welding area increase the possibility of the welding current passing through lifting chains crane cables or other alternate cir cuits This can create fire hazards or overheat lifting chains or cables until they fail Also see item 1 c LINCOLN 8 CYLINDER may explode 22 s if damaged 7 a Use only compressed gas cylinders containing the correct shielding gas for the process used and properly operating regulators designed for the gas and pressure used All hoses fittings etc should be suitable for the application and maintained in good condition Always keep cylinders in an upright position securely chained to an undercarriage or fixed support Oylinders should be located Away from areas where they may be struck or subjected to physical damage A safe distance from arc welding or cutting operations and any other source of heat sparks or flame Never allow the electrode electrode holder or any other ele
17. stem from a faulty Control PC Board Perform the following diagnostic procedure before replacing the Control PC Board 1 Turn off the input power at the fuse box 2 Check for loose connections in the PC Board plugs particularly J3 3 Disconnect the J3 plug from the Control PC Board Measure the resistance between the following wire terminals in the plug A Between wire 200 and wire 201 B Between wire 202 and wire 203 Both of these resistances should be less than 1 ohm If these resistances are not less than 1 ohm check the wiring back to the main transformer If these voltages are less than 1 ohm refer to Procedure for Replacing PC Boards METER PC BOARD When the Meter PC Board malfunctions first determine if the rest of the machine functions correctly If so then the problem is in either the harness between the meter and control boards or in the meter board itself Refer to Procedure for Replacing PC Boards As a last resort the Control PC Board may have to be replaced CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests repairs safely contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed CV 250 LINCOLN 8 E 8 TROUBLESHOOTING E 8 OUTPUT VOLTAGE The open circuit voltage of the machine should be 10 to 43 volts If any other condition exists refer to the Troubleshooting Gu
18. still be available The thermostat will remain open until the machine cools at which time it will close and the output will again be available The CV 250 is electronically protected against over loads and accidental short circuits The overload pro tection circuit automatically reduces the output current to a safe value when an overload is detected If the circuitry senses a short circuit it will shut off the CV 250 output The short circuit protection circuit can be reset by turning the CV 250 Power switch OFF for at least 10 seconds Remove the short before turning the Power switch ON again CV 250 LINCOLN 8 TROUBLESHOOTING E 1 HOW TO USE TROUBLESHOOTING GUIDE A WARNING Service and Repair should only be performed by Lincoln Electric Factory Trained Personnel Unauthorized repairs performed on this equipment may result in danger to the technician and machine operator and will invalidate your factory warranty For your safety and to avoid Electrical Shock please observe all safety notes and precautions detailed throughout this manual This Troubleshooting Guide is provided to help you locate and remedy possible prob lems with machine setup or operation Simply follow the three step procedure listed below Step 1 LOCATE PROBLEM SYMPTOM Look under the column labeled PROBLEM SYMPTOMS This column describes pos sible symptoms that the machine may exhibit Find the listing that best describes the symptom tha
19. 0 ft 250 A 100 2 2 300 A 60 1 0 50mm 2 0 95mm CV 250 LINCOLN 8 A 4 INSTALLATION PARALLELING The CV 250 is not designed to be paralleled with any other power source CONNECTION OF AUXILIARY EQUIPMENT TO THE WIRE FEEDER RECEPTACLE Occasionally it may be necessary to make connection to the circuits present in the 14 pin wire feeder recep tacle These circuits such as the auxiliary voltage contactor and remote control circuits may be accessed with a K867 Universal Adapter This adapter plugs into the receptacle and provides the user with short wire leads for connections Refer to the instructions provided with the K867 as well as the wiring diagram for the CV 250 power source for details on making those connections For your conve nience wire feeder connection details are shown in the DIAGRAM section NOTE If you intend to use a standard Lincoln wire feeder order the appropriate input cable for the specific feeder It will make all of the con trol and power connections between the CV 250 and the wire feeder WITHOUT the need for a K867 Universal Adapter CV 250 LINCOLN 8 OPERATION B 1 OPERATING INSTRUCTIONS Read and understand this entire section before oper ating the machine GENERAL WARNINGS SAFETY PRECAUTIONS A WARNING e ELECTRIC SHOCK can kill Do not touch electrically live parts or electrode with skin or wet clothing Insulate yourself from work and ground e
20. 9 01 39Y1710A 1nd1nO 328 10 H3MOd 139 01 S12Y1NOO 30 13S V AlddfS 530334 3HIN 803 NYHOYIG Y 35070 LVHL SH30333 381 803 vu9vIQ F 10 CV 250 LINCOLN E F 11 s99stH v SC 00 T 009 z9 te G n DIAGRAMS DIMENSION PRINT 66 06 VOE 66 TT F 11 S IHQON YSITAVa NO NOILVANOIANOO H IONVH d N 9T S ONISO NMOG ONILNOOW NOH ASYA NI SLOTS ANOA WN SE 8t T M FFF Tn 9S0T 8S Iv I6 9 099 00 92 LST 984 S6 0 90S OS IC SL vc L87 OC 6T Et 66v 59 6 605 50 0 CV 250 LINCOLN E Now Available 12th Edition The Procedure Handbook of Arc Welding With over 500 000 copies of previous editions published since 1933 the Procedure Handbook is considered by many to be the Bible of the arc welding industry This printing will go fast so don t delay Place your order now using the coupon below The hardbound book contains over 750 pages of welding information techniques and procedures Much of this material has never been included in any other book A must for all welders supervisors engineers and designers Many welding instructors will want to use the book as a reference for all students by taking advantage of the low quantity discount prices which include shipping b
21. Cycle 56 28 22 RATED OUTPUT OUTPUT Normal Open Circuit Voltage 10 43 MAX OCV 50 MISC INFORMATION Input kVA 60 Load 22 3 100 Load 20 3 Power Factor at 100 Load 53 PHYSICAL DIMENSIONS Width 19 5 in Lift bail add 3 12 in 495 mm Lift bail add 80 mm CV 250 LINCOLN 8 Volts at Rated Amperes 30 32 30 Auxiliary Power 42 Volts AC 10 Amps 115 Volts AC 5 Amps Both Circuit Breaker Protected Idle Current Amps 11 10 5 Weight 300 Ibs 137 kg A 2 Read entire installation section before starting installation SAFETY PRECAUTIONS WARNING 9 ELECTRIC SHOCK can kill Only qualified personnel should perform this installation Turn the input power OFF at the discon nect switch or fuse box before working on this equipment Turn the Power switch on the CV 250 OFF before connecting or disconnect ing output cables wire feeder or remote connections or other equipment Do not touch electrically hot parts Always connect the Idealarc CV 250 grounding terminal located on the welder base near the reconnect panel to a good electrical earth ground SELECT SUITABLE LOCATION Place the welder where clean cooling air can freely circulate in through the side louvers and out through the rear louvers Dirt dust or any foreign material that can be drawn into the welder should be kept at a minimum Failure to observe these precautions can result in exce
22. ERS SHOULD CONSULT WITH THEIR DOCTOR BEFORE OPERATING Read and understand the following safety highlights For additional safety information it is strongly recommended that you purchase a copy of Safety in Welding amp Cutting ANSI Standard Z49 1 from the American Welding Society P O Box 351040 Miami Florida 33135 or CSA Standard W117 2 1974 A Free copy of Arc Welding Safety booklet E205 is available from the Lincoln Electric Company 22801 St Clair Avenue Cleveland Ohio 44117 1199 BE SURE THAT ALL INSTALLATION OPERATION MAINTENANCE AND REPAIR PROCEDURES ARE PERFORMED ONLY BY QUALIFIED INDIVIDUALS FOR ENGINE powered equipment 1 a Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running 3 1 h To avoid scalding do not remove the radiator pressure cap when the engine is hot 1 b Operate engines in open well ventilated areas or vent the engine exhaust fumes outdoors ELECTRIC AND MAGNETIC FIELDS may be dangerous 1 c Do not add the fuel near an open flame welding arc or when the engine is running Stop the engine and allow it to cool before refueling to prevent spilled fuel from vaporiz ing on contact with hot engine parts and igniting Do not spill fuel when filling tank If fuel is spilled wipe it up and do not start engine until fumes have been eliminated 2 a Electric current flowing thr
23. For Damage Immediately When this equipment is shipped title passes to the purchaser upon receipt by the carrier 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 replacement parts for or information on this equipment always supply the information you have recorded above Read this Operators Manual completely before attempting to use this equipment Save this manual and keep it handy for quick reference Pay particular attention to the safety instructions we have provided for your protection The level of seriousness to be applied to each is explained below A WARNING This statement appears where the information must be followed exactly to avoid serious personal injury or loss of life CAUTION This statement appears where the information must be followed to avoid minor personal injury or damage to this equipment TABLE OF CONTENTS Page Installation eret tette ree tee eec rn Eee Section A Technical Specifications oe ate e erect Mem a aes A 1 Select Suitable Location nernet een A 2 Input Connect
24. HONDOS AAMOd N TOONIT HLIM GHSN OL LNVAW SI HOLOSNNOO SIHL SNOILOQWILSNI NOILVTIVLSNI CV 250 LINCOLN E DIAGRAMS F 9 TWIST MATE CABLE PLUG INSTALLATION INSTRUCTIONS TWIST MATE WELDING CABLE PLUG INSTALLATION INSTRUCTIONS ELECTRIC SHOCK CAN KILL TURN THE POWER SWITCH OF THE WELDING POWER SOURCE OFF BEFORE INSTALLING PLUGS ON CABLES OR WHEN CONNECTING OR DISCONNECTING PLUGS TO WELDING POWER SOURCE 1 CHECK THAT THE CONNECTOR BOOT IS MARKED FOR THE APPROPRIATE CABLE SIZE PER TABLE BELOW AND SKIN CABLE JACKET TO LENGTH SPECIFIED BOOT MARKING AMERICAN EUROPEAN RANGE CABLE SKIN LENGTH CABLE SIZE 35 50 2 1 35 50 mm 1 INCH 25 4mm 50 70 1 0 2 0 50 70 mm 1 INCH 25 4mm 70 95 2 0 3 0 70 95 mm 1 5 INCH 38 1mm 2 If necessary trim cable end of boot at groove s to match cable diameter Boot must fit tightly enough to seal around outside diameter of cable NOTE Some boots are designed to accommodate different cable diameters without trimming These boots do not have grooves at the cable end Soap or other non petroleum based lubricant will help to slide the boot over the cable 3 Slide rubber boot onto cable end WELDING CABLE SEE ABOVE TRIM 4 Slide the copper tube into the brass plug SET SCREW 5 Insert cable into copper tube 70 95 size may have 2 set screws BRASS PLUG COPPER TUBE Et Tighten set screw s 16 02 6 to collapse copper tub
25. IM505 IDEALARC CV 25D December 199 For use with machine Code Numbers 10013 10014 Safety Depends on You Lincoln arc welding and cutting equipment is designed and built with safety in mind However your overall safety can be increased by proper installation and thought ful 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 Date of Purchase Serial Number Code Number Model Where Purchased __ OPERATOR S MANUAL LINCOLN World s Leader in Welding and Cutting Products Sales and Service through Subsidiaries and Distributors Worldwide Cleveland Ohio 44117 1199 U S A TEL 216 481 8100 FAX 216 486 1751 WEB SITE www lincolnelectric com SAFETY WARNING CALIFORNIA PROPOSITION 65 WARNINGS Diesel engine exhaust and some of its constituents The engine exhaust from this product contains are known to the State of California to cause can chemicals known to the State of California to cause cer birth defects and other reproductive harm cancer birth defects or other reproductive harm The Above For Diesel Engines The Above For Gasoline Engines ARC WELDING CAN BE HAZARDOUS PROTECT YOURSELF AND OTHERS FROM POSSIBLE SERIOUS INJURY OR DEATH KEEP CHILDREN AWAY PACEMAKER WEAR
26. LNOO ALONE IVNOILdO SLLA LL SLVIOSNI SAWAT SOLIS a N ATIVOGIAIGNI GVH I AHSANN HOVH ALV INSNI D N SOuNOS AHMOd LV SH ISVO 1 HS HHASN uddOu NNA lL ALINVIOd HONVHO OI HAILISOd HGO LOSH IH SMOHS WWVHWOVIG d N NOLLVOI TddV 40 H IODOAD ALNA LNSNMHNH O AOA GHZIS A4 LSAN H ISVO ONIG ISM NUN LL 9L Q 9L SL SL NUDO ALda J3 ISHVO COND POPA HO T6ZA Iz J IHVO NXGO LOH Id IVSHHAINOQ L984 JAIM L NT TONHHdNV L TIIA NWO uruoeu STUJ XooHs OIHLOSTH esn easur Tuo e 3epesj eua Bur4qo uuoo 910704 esnj ey YOITMS 302euuoosrp eua bursn ee u3 o3 mdu umni amp MHOM OL AAMOd I A9 A9 CV 250 LINCOLN E F 5 DIAGRAMS CV POWER SOURCE TO AN LN 25 F 5 199025 6 81 9 HHdWO P v9TX AHL NAHM uLOHu SAVM IV HHV S IVNINANL ONIGIAM HO4NOS AHMOd AHL HHLdVGIV IOWLNOO ALONSA 98121 AHL AO TIONHHAIWVY NId VT AHL OL WHdW P 787M AHL LOHNNOO TOMLNOO HLONHY LS8M V ONISN AI quSn SI IOWLNOO ALONHY ON AI SONOS WHMOd HHL AO lON4HdNV NId vl AHL OL A LLOHWIG ONId AHdWNE v98vV3X AHL LOSNNOO Q N
27. OTE Do not use circuits 2 or 4 for control of auxil iary loads The 2 4 circuit is isolated from the 31 32 and 41 42 circuits CAUTION Note that some types of equipment especially pumps and large motors have starting currents which are significantly higher than their running current These higher starting currents may cause the circuit breaker to open If this situation occurs the user should refrain from using the CV 250 auxiliary power for that equip ment OVERLOAD PROTECTION This welder has thermostatic protection from exces sive duty cycles overloads loss of cooling and high ambient temperatures When the welder is subjected to an overload or loss of cooling a thermostat will open This condition will be indicated by the illumina tion of the yellow Thermostatic Protection Light on the case front see Figure B 1 The fan will continue to run to cool the power source No welding is possible until the machine is allowed to cool and the Thermostatic Protection Light goes out CV 250 LINCOLN e ACCESSORIES e FACTORY INSTALLED OPTIONS ACCESSORIES There are no factory installed options accessories on the CV 250 FIELD INSTALLED OPTIONS REMOTE VOLTAGE CONTROL K857 The K857 consists of a control box with 25 feet 7 6 m of four conductor cable Installation of a K857 Remote Voltage Control in the CV 250 requires a K864 Remote Control Adapter Refer to the instruc tions provided with the K857 for hooku
28. S for connection of work and electrode cables A WARNING The output terminals are energized at all times when the K484 is plugged in LN 742 to CV 250 8 Turn the CV 250 Power switch to the OFF posi tion b Connect the LN 742 control cable to the wire feeder receptacle on the CV 250 c See OUTPUT CONNECTIONS for connection of work and electrode cables INSTALLATION A 3 Connection of Remote Control K857 NOTE The K864 Remote Control Adapter is required to install the K857 Plug the K864 Remote Control Adapter into the power source s 14 pin receptacle Plug the K857 Remote Control into the 6 pin receptacle of the K864 adapter If possible tape the Remote cable to the heavy output leads so they can protect the smaller Remote cable from damage and abuse OUTPUT CONNECTIONS Output cables must have Magnum Twist Mate plugs for connection to the CV 250 Order K852 70 for con necting 1 0 2 0 50 70 cables Refer to 518737 for instructions on installing these plugs Use the shortest possible cable lengths See Table A 1 for recommended cable sizes based on length Connect the positive output lead to the terminal marked The negative output lead can be hooked to either the low inductance terminal marked or the high inductance terminal marked 1 Cable Sizes for Combined Lengths of Electrode and Work Cable Lengths up to Machine Size 150 ft 150 to 20
29. UR donc a Utiliser un bon masque avec un verre filtrant appropri ainsi qu un verre blanc afin de se prot ger les yeux du rayonnement de l arc et des projections quand on soude ou quand on regarde l arc Porter des v tements convenables afin de prot ger la peau de soudeur et des aides contre le rayonnement de l arc Prot ger l autre personnel travaillant proximit au soudage l aide d crans appropri s et non inflamma bles Des gouttes de laitier en fusion sont mises de l arc de soudage Se prot ger avec des v tements de protection libres de l huile tels que les gants en cuir chemise paisse pantalons sans revers et chaussures montantes LINCOLN 8 Relier la terre le chassis du poste conformement au code de l lectricit et aux recommendations du fabricant Le dis positif de montage ou la piece souder doit tre branch une bonne mise la terre Autant que possible l installation et l entretien du poste seront effectu s par un lectricien qualifi Avant de faires des travaux l interieur de poste la debrancher l interrupteur la boite de fusibles Garder tous les couvercles et dispositifs de s ret leur v v for selecting a QUALITY product by Lincoln Electric We want you J hank You to take pride in operating this Lincoln Electric Company product as much pride as we have in bringing this product to you Please Examine Carton and Equipment
30. al troubleshooting assistance before you proceed CV 250 LINCOLN 8 E 5 TROUBLESHOOTING E 5 Observe all Safety Guidelines detailed throughout this manual PROBLEMS POSSIBLE AREAS OF RECOMMENDED SYMPTOMS MISADJUSTMENTS S COURSE OF ACTION PROBLEMS Poor arc striking with semiautomatic 1 Poor work connection 1 Work connection must be adequate for application 2 Improper procedures 2 Adjust procedures for improved start ing 3 Wire feed acceleration too fast 3 Adjust wire feeder acceleration set too slow ting if provided 4 Defective PC Board 4 See PC Board Troubleshooting Procedure Poor arc characteristics 1 Control PC Board defective 1 See PC Board Troubleshooting Procedure CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests repairs safely contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed CV 250 LINCOLN 8 E 6 TROUBLESHOOTING E 6 Observe all Safety Guidelines detailed throughout this manual OPTIONS TROUBLESHOOTING GUIDE K857 or other Remote Output Control PROBLEMS POSSIBLE AREAS OF RECOMMENDED SYMPTOMS MISADJUSTMENTS S COURSE OF ACTION PROBLEMS Voltage control not functioning on Local Remote switch in wrong 1 Place switch in Remote Remote Control position Faulty Local Remote switch Check and replace if found faulty Faulty Remot
31. any electrical or mechanical damage to any of its components and conductors on the back of the board a If there is no visible damage to the PC board install a new one and see if this remedies the prob lem If the problem is remedied reinstall the old PC board to see if the problem still exists If it does no longer exist with old PC board 1 Check the PC board harness connector pins for corrosion contamination or looseness 2 Check leads in the plug harness for loose or intermittent connection b If PC board is visibly damaged electrically before possibly subjecting the new PC board to the same cause of failure check for possible shorts opens or grounds caused by 1 Frayed or pinched lead insulation 2 Poor lead termination such as a poor contact or a short to adjacent connection or surface 3 Shorted or open motor leads or other external leads 4 Foreign matter or interference behind the PC boards c If PC board is visibly damaged mechanically inspect for cause then remedy before installing a replacement PC board If there is damage to the PC board or if replacing PC board corrects problem return it to the local Lincoln Electric Field Service Shop PC BOARD TROUBLESHOOTING PROCEDURES CONTROL PC BOARD The Control PC Board controls all machine functions including the thermal protection indicator light and the Meter PC Board Most problems if not caused by faulty wiring machine misuse will
32. as no output 1 Check 2 and 4 circuit wiring and 4 wire feeder receptacle not working Electrode or work lead loose or broken Defective PC Board Protective circuits operating due to output short circuit If using an LN 25 K484 jumper plug kit not making connection between 2 amp 4 in wire feeder receptacle If welding with 1 16 aluminum wire and machine is flashing E00 Machine has minimum output and no 1 Voltage Control misconnected Open in feedback circuitry Faulty PC Board 3 Voltage Adjust potentiometer circuit open lead 75 Repair connection See PC Board Troubleshooting Procedure Turn power off Remove output short circuit Check for continuity between pins C amp D in the K484 8 Turn power off to clear error Use recommended wfs voltage set tings and angle of approach of wire to work b If problem still persists call Local Lincoln Authorized Field Service Facility Voltage Control wiring Check wiring and control and PC board wiring harness plugs See PC Board Troubleshooting Procedure Check and replace potentiometer if faulty Check wiring of lead 75 CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests repairs safely contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed CV 250 LINCOLN 8
33. che Eviter toujours tout contact entre les parties sous tension et la peau nue ou les v tements mouill s Porter des gants secs et sans trous pour isoler les mains Faire tr s attention de bien s isoler de la masse quand on soude dans des endroits humides ou sur un plancher metallique ou des grilles metalliques principalement dans les positions assis ou couch pour lesquelles une grande partie du corps peut tre en contact avec la soudage Utiliser des lunettes avec crans lateraux dans les zones o l on pique le laitier Eloigner les mat riaux inflammables ou les recouvrir afin de pr venir tout risque d incendie d aux tincelles Quand on ne soude pas poser la pince une endroit isol de la masse Un court circuit accidental peut provoquer un chauffement et un risque d incendie S assurer que la masse est connect e le plus pr s possible de la zone de travail qu il est pratique de le faire Si on place la masse sur la charpente de la construction ou d autres endroits loign s de la zone de travail on augmente le risque de voir passer le courant de soudage par les chaines de lev age c bles de grue ou autres circuits Cela peut provoquer des risques d incendie ou d echauffement des chaines et des c bles jusqu ce qu ils se rompent masse 9 Assurer une ventilation suffisante dans la zone de soudage Maintenir le porte lectrode la pince de masse le c ble de soudage et la machine sou
34. ctrically hot parts to touch a cylinder Keep your head and face away from the cylinder valve outlet when opening the cylinder valve Valve protection caps should always be in place and hand tight except when the cylinder is in use or connected for use Read and follow the instructions on compressed gas cylinders associated equipment and CGA publication P l Precautions for Safe Handling of Compressed Gases in Cylinders available from the Compressed Gas Association 1235 Jefferson Davis Highway Arlington VA 22202 FOR ELECTRICALLY powered equipment 8 a Turn off input power using the disconnect switch at the fuse box before working on the equipment Install equipment in accordance with the U S National Electrical Code all local codes and the manufacturer s recommendations Ground the equipment in accordance with the U S National Electrical Code and the manufacturer s recommendations Mar 95 i SAFETY i PR CAUTIONS DE S RET 5 Toujours porter des lunettes de s curit dans la zone de Pour votre propre protection lire et observer toutes les instruc tions et les pr cautions de s ret specifiques qui parraissent dans ce manuel aussi bien que les pr cautions de s ret g n rales suivantes S ret Pour Soudage A L Arc 1 Protegez vous contre la secousse lectrique Les circuits l lectrode et la pi ce sont sous tension quand la machine souder est en mar
35. der en bon et s r tat defonctionnement d Ne jamais plonger le porte lectrode dans l eau pour le refroidir Ne jamais toucher simultan ment les parties sous tension des porte lectrodes connect s deux machines soud er parce que la tension entre les deux pinces peut tre le total de la tension vide des deux machines Si on utilise la machine souder comme une source de courant pour soudage semi automatique ces precautions pour le porte lectrode s applicuent aussi au pistolet de soudage 2 Dans le cas de travail au dessus du niveau du sol se pro t ger contre les chutes dans le cas ou on recoit un choc Ne Ceci est particuli rement important pour le soudage de t les galvanis es plomb es ou cadmi es ou tout autre m tal qui produit des fume s toxiques Ne pas souder en pr sence de vapeurs de chlore provenant d op rations de d graissage nettoyage ou pistolage La chaleur ou les rayons de l arc peuvent r agir avec les vapeurs du solvant pour produire du phosg ne gas forte ment toxique ou autres produits irritants Pour obtenir de plus amples renseignements sur la s ret voir le code Code for safety in welding and cutting CSA Standard W 117 2 1974 jamais enrouler le c ble lectrode autour de n importe quelle PR CAUTIONS DE S RET POUR partie du corps LES MACHINES SOUDER Un coup d arc peut tre plus s v re qu un coup de soliel TRANSFORMATEUR ET REDRESSE
36. e 5 must apply firm pressure against welding cable The top of the set screw s will be nearly flush or below the surface of the brass plug after tightening LELBTS 7 Slide rubber boot over brass plug The rubber boot must be positioned to completely cover all electrical surfaces after the plug is locked into the receptacle CV 250 LINCOLN P F 10 O3qQIAOHd 38 LSNW JOVLIOA LVHL HOS AlddfS H3MOd NV S3NIHOVW 3WOS NO O V A SII HO 9 V A Zh NVHL H3H10 JOVLIOA LNdNI NV S3uIno3H 30334 3HIM 3H1 JI 830333 3HIM 3HL 03114905 SI LWHL 39V110A 3WvS 3Hl HO4 Q3lVu 38 LSNW 1109 AV I3H Q N Q3 NnOuU9 A dd3dO0Bd 38 LSNW 39HN0S H3MOd 8 N S3NIHOVW NO iN3S3Ud 38 LON AWW CE QNV LE SNOIIO3NNOO NN 0341003 OS 31 83033338 M N102NI71 NON 10U1N02 179119 31034 104170 376105 WHO Ol 81404 INN u380d 139 01 u30333 IYIN 03173915 39 1 10 0341003 OS 31 8303333818 N102NI1 NON WYLNOD 109119 nos 114170 31036 u3M0d 13 o1 SNC 3501 512Y1N02 NHO OI U3MOq LANI b30334 JYI 140 AVIVAMON INQ AV 30 LL 9L SL QN9 ax V N LE 91 SL OND UN 1081N02 B012V1NOJ 104100 DIAGRAMS CONNECTION OF NON LINCOLN WIRE FEEDERS U31LdVOV TVSU3AINN 498 KUM 3 72V1d3203u H30333 3UIM NId 39UN0S uaMOd NIOINI U3LdVGV 98 HLIM 3129V1d303U Y30344 3MIA NId 39UN0S YAMOd NIOONII 104100 398n0S u3MOd 13
37. e Control poten Check and replace if found faulty tiometer Leads or connections open in Check all leads and connections control circuit internal or remote for continuity repair if necessary Faulty Control PC board See PC Board Troubleshooting Procedure Voltage Adjust not functioning on the 1 Local Remote switch in the Place switch in Local position machine wrong position Faulty Local Remote switch Check and replace if found faulty Faulty Voltage Adjust Check and replace if found faulty potentiometer Leads or connections open in Check all leads and connections control circuit internal or remote for continuity repair if necessary Faulty Control PC board See PC Board Troubleshooting Procedure A CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests repairs safely contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed CV 250 LINCOLN 8 E 7 TROUBLESHOOTING E 7 Procedure for Replacing PC Boards A WARNING ELECTRIC SHOCK can kill Have a qualified individual install and service this equipment Turn the power source input power off at the disconnect switch before work ing on this equipment Do not touch electrically hot parts Before replacing a PC board which is suspected of being defective visually inspect the PC board in ques tion for
38. ead nozzle or semiautomatic welding gun are also electrically hot Always be sure the work cable makes a good electrical connection with the metal being welded The connection should be as close as possible to the area being welded Ground the work or metal to be welded to a good electrical earth ground Maintain the electrode holder work clamp welding cable and welding machine in good safe operating condition Replace damaged insulation Never dip the electrode in water for cooling Never simultaneously touch electrically hot parts of electrode holders connected to two welders because voltage between the two can be the total of the open circuit voltage of both welders When working above floor level use a safety belt to protect yourself from a fall should you get a shock Also see Items 6 c and 8 ARC RAYS can burn 4 a Use a shield with the proper filter and cover 2 plates to protect your eyes from sparks and TT the rays of the arc when welding or observing open arc welding Headshield and filter lens should conform to ANSI Z87 standards 4 b Use suitable clothing made from durable flame resistant material to protect your skin and that of your helpers from the arc rays Protect other nearby personnel with suitable non flammable screening and or warn them not to watch the arc nor expose themselves to the arc rays or to hot spatter or metal 23 FUMES AND GASES 4 can be dangerous 5 a
39. elding with the following flux cored wires NR 152 NR 211 NS 3M NR 203 Ni 1 and Outershield 70 and 71 The CV 250 is recommended for use with the LN 7 LN 742 and LN 25 wire feeder models OPERATIONAL FEATURES AND CONTROLS e Two inductance positions operator can choose the optimum output characteristics Solid State Output Contactor no noise no moving parts to wear Digital Voltmeter Ammeter is standard e Power on off switch 42 10 amp auxiliary power available for the wire feeder Circuit breaker protected 115 VAC 5 amp auxiliary power available for the wire feeder circuit breaker protected e Magnum Twist Mate output receptacles Single MS type 14 pin connection for wire feeder Solid state controls with line voltage compensation Optional remote control capability DESIGN FEATURES Clean appearance and simple controls easy to operate Electronic thermostatic protection from over loads Submersion dipping of assembled transformer choke and rectifier in special sealing insulating material gives extra protection against moisture and corrosive atmospheres Microprocessor based Control PC Board has built in diagnostic routines Compact size requires only 19 x 26 footprint e Modular construction for easy servicing e Recessed panels protect output studs and controls Large safety margins and protecti
40. er voltmeter if so equipped When weld ing electrode positive MIG Outershield and some Innershield processes set the switch to switch has no effect GRAPHIC SYMBOLS THAT APPEAR ON THIS MACHINE OR IN THIS MANUAL THERMAL PROTEC O OFF TION INDICATOR LIGHT CIRCUIT oN o BREAKER AC CLOCKWISE ROTA N POWER fF TION INCREASES VOLTAGE REMOTE OUTPUT LOCAL OUTPUT VOLTAGE CONTROL VOLTAGE CONTROL jj WARNING INDICATES WARNING INFORMATION S LOCATED ON RIGHT CASE SIDE CV 250 LINCOLN This switch has no effect on the welding polarity In fact if the wire feeder being used does not have a voltmeter the setting of this B 5 OPERATION B 5 OUTPUT PANEL CONNECTIONS FIGURE B 2 OUTPUT PANEL A POSITIVE OUTPUT CONNECTION C HIGH INDUCTANCE NEG CONNECTION B LOW INDUCTANCE NEG CONNECTION D WIRE FEEDER RECEPTACLE A B C OUTPUT CONNECTORS C HIGH INDUCTANCE NEGATIVE OUTPUT CONNECTION Each connector is a Magnum Twist Mate V receptacle Insert a mating Twist Mate plug and twist clockwise to secure For GMAW processes and most FCAW processes the positive output connection goes to the wire feeder One of the negative output connections goes directly to the work The high inductance connection is more suit able for short arc welding heavier weldments or when using 75 Argon 25 CO shield ing gas This connection produces a softer arc and a flatter bead with more wash in than the
41. hrenden Teile oder Elektroden mit Ihrem K rper oder feuchter Kleidung Isolieren Sie sich von den Elektroden und dem Erdboden N o toque partes el tricas e elec trodos com a pele ou roupa molha da Isole se da pe a e terra o REPOR iHe 201 ff Chi suc E J T 19697 8 NTWSHRELTFSU e E eski An 945 e ft B SUE HIER ecran S458 XE FE s Bp HZA e 2x9 HIE Weal HAR Ju Gu gone uil oh ye puni das ag gh ui uae pally All apad Jai DA dua aa e Keep flammable materials away Mantenga el material combustible fuera del area de trabajo Gardez l cart de tout mat riel inflammable Entfernen Sie brennbarres Material Mantenha inflamaveis bem guarda dos CRAP TUSEOOM CORRE THEN EA e i 9 E Vi B T IF PF o 12 AS AA uie ape Jo ALD a gll pis Wear eye ear and body protection Prot jase los ojos los o dos y el cuerpo Prot gez vos yeux vos oreilles et votre corps Tragen Sie Augen Ohren und K r perschutz Use prote o para a vista ouvido e corpo e BH HRUBS ISUCRSREUCT EU RRR ez 12 0A amp s ESSA due gulag cl ysl gua e READ AND UNDERSTAND THE M ANUFACTURER S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUM ABLES USED AND FOLLOW YOUR EMPLOYER S SAFETY
42. icing Desconectar el cable de ali mentaci n de poder de la m quina antes de iniciar cualquier servicio D branchez le courant avant l entre tien Strom vor Wartungsarbeiten abschalten Netzstrom v llig ff nen Maschine anhalten N o opere com as tampas removidas Desligue a corrente antes de fazer servico Nao toque as partes el tricas nuas e X7TTL 2A 9 AVCBRUD PRE EFFERRI vF DBF MTF e HERES BEER e Meg xp HAS Aie pha J judi gail e Do not operate with panel open or guards off No operar con panel abierto o guardas quitadas N op rez pas avec les panneaux ouverts ou avec les dispositifs de protection enlev s Anlage nie ohne Schutzgeh use oder Innenschutzverkleidung in Betrieb setzen Mantenha se afastado das partes moventes N o opere com os paineis abertos ou guardas removidas e VxRJIOL A ENQUM L Z CRMRBIEE U t AC F e V E Ro eggo Yel HAE AS Abby Cols Vil lu Qai ye gt WARNING Spanish AVISO DE PRECAUCION French ATTENTION German WARNUNG Portuguese ATEN AO Japanese it is BIR LEIA E COMPREENDA AS INSTRU ES DO FABRICANTE PARA ESTE EQUIPAMENTO E AS PARTES DE USO E SIGA AS PR TICAS DE SEGURANCA DO EMPREGADOR fE 5 k lt MA ETISRUCESU CL TRHORERE HS lt F ux ET
43. ide FAULT PROTECTION OPERATION The overload protection circuit on the PC Board will cause the CV 250 meter to display E60 This pro tection circuit will reset itself automatically The short circuit protection circuit will cause the meter to display E00 The CV 250 power switch must be turned OFF and then ON to return the machine to normal output CHECKING SNUBBER CIRCUIT In case of an SCR malfunction or failure the snubber assembly should be checked Disconnect the input power to the CV 250 at the fuse box and remove the right side of the machine 1 Visually inspect the snubber PC Board assembly located below the Control PC board on the case front for overheated components or damaged compo nents OPTIONAL K857 REMOTE CONTROL CHECK Disconnect the remote output control and connect an ohm meter between pins C and B and rotate the rheostat in the remote control The resistance reading should go from zero to 10K ohms Repeat with ohmmeter across A and B with the same results Connect ohmmeter across A and C The reading should be 10K ohms A lower reading will indicate a shorted or partially shorted rheostat A very high reading will indicate an open rheostat In either of the last two cases replace the rheostat CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests repairs safely contact your Local Lincoln Authorized Field Service Facility for technical troublesh
44. ions 24 ere e det etos a e et um dace A 2 Field Installed Options a A 3 Required Equipment Control Cable Connections A 3 Output Connections see A 3 Parallelirig roa tot teet M te e ee dd t tus od eed A 4 Connection of Auxiliary Equipment to Wire Feeder Receptacle 4 Operation Section B Safety Precautlons duele cen as eto eaae x SR LEUR qhasa B 1 General Description Eee te B 2 Recommended Processes and B 2 Operational Features and Controls B 2 Design Features uma nete Qaya teer aaa uay A acu aue B 2 Limitations oio ce e eei ee B 2 Power Source Operation Saa Gu nnns B 2 Duty eec tete teal Vt te e aus a Alas B 2 Gontrols and Settirigs eres eet a ines B 3 Graphic Symbols eder ei mee etel aa uum bead B 4 Output Panel Connections ennn B 5 Starting the Machine issuri eire erroe etd Riel B 6 Adjusting the Output Voltage using the Digital B 6 Local Remote Switch Operation ss B 6 Auxiliary POWER xi en na Hb et deeds B 6 Overload Protection et dees 6 Accessories
45. low inductance connection A spray type transfer is possible with either connection A POSITIVE OUTPUT CONNECTION D WIRE FEEDER RECEPTACLE B LOW INDUCTANCE NEGATIVE CONNECTION The low inductance connection is typically used for short arc welding of mild steel par ticularly on thin materials or when using CO9 shielding gas CV 250 LINCOLN 14 pin MS style receptacle for wire feeder Provides connections for auxiliary power contactor closure remote output control wire feeder voltmeter sense lead and ground B 6 OPERATION B 6 STARTING THE MACHINE The power switch at the extreme right side of the con trol panel energizes the CV 250 ADJUSTING THE OUTPUT VOLTAGE USING THE DIGITAL METER The digital meters in the CV 250 incorporate a voltage pre set function This allows the operator to set the desired welding voltage before striking an arc The digital meters can also display welding current To make use of the voltage preset function the Volts Amps Switch must be in the Volts position Turn the Voltage Adjust knob until the digital meter displays the desired weld ing voltage See below if an external power source remote control is installed When an arc is struck the digital meter displays the actual welding voltage as measured at the CV 250 output termi nals NOTE The arc voltage at the electrode may be as much as two volts different from the CV 250 output terminal voltage This is due to v
46. machine to cool Be sure to provide adequate ventilation for machine 1 Voltage Adjust potentiometer not 1 Check wiring between Voltage Adjust and the connected Control PC Board 2 Remote Control not functioning 2 See Options Troubleshooting Guide correctly Input line voltage too low Turn power off Insure machine input voltage is within Specifications Turn power back on Input line voltage too high Turn power off Insure machine input voltage is within Specifications Turn power back on Overload condition Reduce load on machine If after attempting the remedies listed above the error condition still exists the problem may be with the wiring in the following areas the shunt leads 218 and 219 or voltage feedback leads 213B 214B and 224B CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests repairs safely contact your Local Lincoln Authorized Field Service Facility for technical troubleshooting assistance before you proceed CV 250 LINCOLN 8 E 3 TROUBLESHOOTING E 3 Observe all Safety Guidelines detailed throughout this manual MACHINE TROUBLESHOOTING GUIDE Not all trouble conditions can be recognized by the PC board and displayed as error codes The following guide covers most other trouble conditions PROBLEMS POSSIBLE AREAS OF RECOMMENDED SYMPTOMS MISADJUSTMENTS S COURSE OF ACTION PROBLEMS 1 Secondary contactor circuit 2 Machine h
47. oltage drops present in the welding cables cable connections and welding gun To minimize these drops use cables of ade quate capacity and make sure all connections are clean and tight Because of these voltage drops you may have to preset the CV 250 for a slightly higher welding voltage than your procedure calls for To read welding current set the Volts Amps switch to the Amps position The welding current will be displayed whenever an arc is struck LOCAL REMOTE SWITCH OPERATION If voltage control is desired at the CV 250 the Local Remote Switch must be in the Local position The Voltage Adjust on the front panel can be used to adjust the CV 250 output The remote control even if connected will have no effect if the switch is in the Local position To use a remote control such as the K857 see INSTALLA TION section place the Local Remote switch see Figure B 1 in the Remote position The remote control now con trols the output voltage in the manner described above This control may be adjusted while welding to change the CV 250 output AUXILIARY POWER 42 volt AC auxiliary power as required for some wire feeders is available through the wire feeder recepta cle A 10 amp circuit breaker protects the 42 volt cir cuit from overloads CV 250 machines can also supply 115 volt AC auxil iary power through the wire feeder receptacle A 5 amp circuit breaker protects the 115 volt circuit from overloads N
48. ooting assistance before you proceed CV 250 LINCOLN 8 Jequunu epoo 1u uudinb y SAID 1Ju uu oe d i e 104 25 Si au J sjaued ainsojdUS y euo uo y LL apisul si apod Jenaryed e 104 Jenueui siy Aq paJeAoo 104 93e1n22e eq jou 3 A uo 104 51 siu 3LON 95861 W S Dn ONVIHANTO KINO SENIHOVM A09 S IIOD 401 HHL NO O WSNNOJSNVNL NIVN NHISHOIINSLOd YVAN ONINIM H YA 000 T 9 19 HOLINS SNIT TS OL HOLIMS SNIT TS 01 sr 2 zr ve te M oc e NId 8 NId 9 NId v NId Z 8 5 0000 20000 t a 1 6 1 ri o zt o qawod 40 AQIS LNANOdWOD SONSD SS DNIWNSSW N ALIAVO YOLOANNOD SNOLLONNOD LESTA usa STOSWAS TWOINLOSTH LINDAI vs NOILISOd u SLTOAu NI NMOHS Un Same SLTOA cj aes x zs s s 1 1 H LINOYID 2 E i4 ore tao mod a des do d sO ol EMT o w e e NENOLSDO IVISONWHSSHL D z 1ndino MOINLOSTIS TVNOILVN
49. ough any conductor causes localized Electric and Magnetic Fields EMF Welding current creates EMF fields around welding cables and welding machines EMF fields may interfere with some pacemakers and welders having a pacemaker should consult their physician before welding 1 d Keep all equipment safety guards covers and devices in position and in good repair Keep hands hair clothing and tools away from V belts gears fans and all other moving p Exposure to EMF fields in welding may have other health parts when starting operating or repairing equipment effects which are now not known All welders should use the following procedures in order to minimize exposure to EMF fields from the welding circuit In some cases it may be necessary to remove safety guards to perform required maintenance Remove guards only when necessary and replace them when the maintenance requiring their removal is complete Always use the greatest care when working near moving parts 2 d 1 Route the electrode and work cables together Secure them with tape when possible 2 d 2 Never coil the electrode lead around your body 1 f Do not put your hands near the engine fan Do not attempt to override the governor or idler by pushing on the throttle control rods while the engine is running 2 d 3 Do not place your body between the electrode and work cables If the electrode cable is on your right side the work cable sho
50. p to the CV 250 When properly connected and with the CV 250 Local Remote Switch in the Remote position the K857 functions the same as the CV 250 Voltage Adjust control enabling minimum to maximum output voltage adjustment of the CV 250 UNDERCARRIAGE K835 Includes front casters a handle a bracket and a rear wheeled platform that is capable of carrying one gas cylinder The CV 250 lifting eye is not functional with the K835 undercarriage installed TWO CYLINDER UNDERCARRIAGE K874 Platform type undercarriage that can accommodate either one or two gas bottles or one gas bottle and a Magnum water cooler The CV 250 lifting eye is not functional when the K874 undercarriage is installed WIRE FEEDER SWIVEL MOUNT K178 1 Allows an LN 7 or LN 742 to be securely mounted on the roof of a CV 250 UNIVERSAL ADAPTER K867 Provides a means of connecting auxiliary equipment to the wire feeder receptacle on the CV 250 power source Consists of a 14 pin MS type Amphenol plug with 8 inch 0 2 meter long flex leads one for each circuit present in the wire feeder receptacle Not required when using a standard wire feeder input cable such as a K480 with a Lincoln wire feeder COMPATIBLE LINCOLN EQUIPMENT The CV 250 is intended for use with the LN 7 LN 742 and LN 25 wire feed units Use the Cables Kits listed below to make connection easily LN 7 LN 7GMA Requires K480 Input Cable LN 25 Requires K484 Jumper Plug Ki
51. rer 5 e Also see item 1 b Mar 95 LINCOLN 8 SAFETY 7 WELDING SPARKS can lt gt cause fire or explosion 6 a Remove fire hazards from the welding area If this is not possible cover them to prevent the welding sparks from starting a fire Remember that welding sparks and hot materials from welding can easily go through small cracks and openings to adjacent areas Avoid welding near hydraulic lines Have a fire extinguisher readily available Where compressed gases are to be used at the job site special precautions should be used to prevent hazardous situations Refer to Safety in Welding and Cutting ANSI Standard Z49 1 and the operating information for the equipment being used When not welding make certain no part of the electrode circuit is touching the work or ground Accidental contact can cause overheating and create a fire hazard Do not heat cut or weld tanks drums or containers until the proper steps have been taken to insure that such procedures will not cause flammable or toxic vapors from substances inside They can cause an explosion even though they have been cleaned For information purchase Recommended Safe Practices for the Preparation for Welding and Cutting of Containers and Piping That Have Held Hazardous Substances AWS F4 1 from the American Welding Society see address above Vent hollow castings or containers before heating cutting or welding They may
52. ssive operating temperatures and nuisance shut downs Idealarc CV 250 power sources carry an IP23 enclosure rating They are rated for use in damp dirty environments subject to occasional falling water such as rain STACKING INSTALLATION A 2 INPUT CONNECTIONS Be sure the voltage phase and frequency of the input power is as specified on the welder nameplate Gain access to the input reconnect panel by removing the right case side of the CV 250 side nearest to the Power switch Have a qualified electrician connect the input leads to L1 L2 and L3 of the input reconnect panel in accor dance with the National Electrical Code all local codes and the connection diagram located on the inside of the right case side Use a three phase line The frame of the welder must be grounded A ground terminal marked with the symbol e located on the base of the machine is provided for this purpose See the National Electrical Code for details on proper grounding methods Fuse the input circuit with the recommended super lag fuses Choose an input and grounding wire size according to local codes or use the following table Delay type circuit breakers may be used in place of fuses Using fuses or circuit breakers smaller than recommended may result in nuisance tripping from welder inrush currents even if not welding at high cur rents RECOMMENDED INPUT WIRE AND FUSE SIZES Type 75 Copper Voltage Frequency The CV 250 ma
53. t LN 25 w K444 1 Remote Voltage Control Kit Requires K864 Remote Control Adapter and K484 Jumper Plug Kit LN 742 LN 742H Requires K591 Input Cable CV 250 LINCOLN 8 D 1 MAINTENANCE D 1 SAFETY PRECAUTIONS WARNING ELECTRIC SHOCK can kill Only qualified personnel should perform this maintenance Turn the input power OFF at the disconnect switch or fuse box before working on this equipment Do not touch electrically hot parts GENERAL MAINTENANCE 1 The fan motor has sealed bearings which require no service 2 In extremely dusty locations dirt may clog the air channels causing the welder to run hot with prema ture tripping of thermal protection Blow out the welder with low pressure air at regular intervals to eliminate excessive dirt and dust build up on inter nal parts MACHINE AND CIRCUIT PROTECTION The CV 250 Control PC Board has built in diagnostic routines to alert the operator when trouble exists When a trouble condition occurs the CV 250 meter will display an error code in the form EXX where XX refers to a specific error See TROU BLESHOOTING section for an explanation of the error codes The power source is thermostatically protected against overload or insufficient cooling If the machine is overloaded the thermostat will open thermal pro tection indicator light will turn on and the output will be zero The fan will continue to run and auxiliary power will
54. t the machine is exhibiting Step 2 PERFORM EXTERNAL TESTS The second column labeled POSSIBLE AREAS OF MISADJUSTMENT S lists the obvious external possibilities that may con tribute to the machine symptom Perform these tests checks in the order listed In general these tests can be conducted with out removing the case wrap around cover Step 3 PERFORM COMPONENT TESTS If you have exhausted all of the recom mended tests in Step 2 Consult your Local Authorized Field Service Facility CAUTION If for any reason you do not understand the test procedures or are unable to perform the tests repairs safely contact your LOCAL AUTHORIZED LINCOLN ELECTRIC FIELD SERVICE FACILITY for assistance before you proceed CV 250 LINCOLN 8 E 2 TROUBLESHOOTING E 2 Observe all Safety Guidelines detailed throughout this manual BUILT IN DIAGNOSTIC ROUTINES AND ERROR CODES The CV 250 Meter PC Board displays error codes when certain trouble conditions exist The error codes trouble conditions and possible remedies are listed below ERROR TROUBLE REMEDY CODE Output short circuited 1 Turn power off Remove short circuit May be encountered while 2 a Turn power off to clear error Use recommended starting or welding with 1 16 alu Wfs voltage settings and angle of approach of wire minum wire to work b If problem still persists call Local Lincoln Authorized Field Service Facility Thermostat circuit has opened Allow
55. uld also be on your right side N Connect the work cable to the workpiece as close as possible to the area being welded To prevent accidentally starting gasoline engines while turning the engine or welding generator during maintenance work disconnect the spark plug wires distributor cap or magneto wire as appropriate Do not work next to welding power source Mar 95 LINCOLN 8 SAFETY ELECTRIC SHOCK can kill 3 a The electrode and work or ground circuits are electrically hot when the welder is on Do not touch these hot parts with your bare skin or wet clothing Wear dry hole free gloves to insulate hands 3 b Insulate yourself from work and ground using dry insulation Make certain the insulation is large enough to cover your full area of physical contact with work and ground In addition to the normal safety precautions if welding must be performed under electrically hazardous conditions in damp locations or while wearing wet clothing on metal structures such as floors gratings or scaffolds when in cramped positions such as sitting kneeling or lying if there is a high risk of unavoidable or accidental contact with the workpiece or ground use the following equipment Semiautomatic DC Constant Voltage Wire Welder DC Manual Stick Welder AC Welder with Reduced Voltage Control In semiautomatic or automatic wire welding the electrode electrode reel welding h
56. ve circuits protect rectifiers from transient voltages and high currents LIMITATIONS The CV 250 is intended only for use with the following FCAW electrodes NR 152 NR 211 NR 203 Ni 1 NS 3M Outershield 70 and 71 The machine has been designed primarily for the GMAW process POWER SOURCE OPERATION Be sure the CV 250 is properly installed and that all accessories are properly hooked up before attempting operation DUTY CYCLE 250 Amps 30 Volts at 100 300 Amps 32 Volts at 60 Duty Cycle is based on operation for a 10 minute period CV 250 LINCOLN P B 3 CONTROLS AND SETTINGS OPERATION B 3 All operator controls and adjustments are located on the case front of the CV 250 Refer to Figures B 1 and B 2 and corresponding explanations FIGURE B 1 CONTROL PANEL A POWER SWITCH B VOLTAGE ADJUSTMENT C THERMAL PROTECTION INDICATION LIGHT D VOLTS AMPS SWITCH E DIGITAL VOLTMETER AMMETER A POWER SWITCH A two position toggle switch Controls the input power to the CV 250 B VOLTAGE ADJUST Controls the CV 250 output voltage C THERMAL PROTECTION INDICATION LIGHT Indicates that the protection thermostat has activated The digital meter will display E10 when this occurs When the light turns off the machine will be capable of supplying welding output power again NOTE Leaving the power switch in the ON posi tion will result in the most rapid cooling D VOLTS AMPS SWITCH
57. y 4th class parcel post 15 00 postage paid U S A Mainland How To Read Shop Drawings The book contains the latest information and application data on the American Welding Society Standard Welding Symbols Detailed discussion tells how engineers and draftsmen use the short cut language of symbols to pass on assembly and welding information to shop personnel Practical exercises and examples develop the reader s ability to visualize mechanically drawn objects as they will appear in their assembled form 187 pages with more than 100 illustrations Size 8 1 2 x 11 Durable cloth covered board binding 4 50 postage paid U S A Mainland There is a 10 discount on all orders of 50 00 or more for shipment at one time to one location New Lessons in Arc Welding Lessons simply written cover manipulatory techniques machine and electrode characteristics related subjects such as distortion and supplemental information on arc welding applications speeds and costs Practice materials exercises questions and answers are suggested for each lesson 528 pages well illustrated 6 x 9 size bound in simulated gold embossed leather 5 00 postage paid U S A Mainland Need Welding Training The Lincoln Electric Company operates the oldest and most respected Arc Welding School in the United States at its corporate headquarters in Cleveland Ohio Over 100 000 stu dents have graduated Tuition is low and the training is
58. y be stacked three high provided the bottom machine is on a stable hard level surface Be sure that the two pins in the roof fit into the slots in the base of the CV 250 above it 20860 9 CIRE 460 60 0 575 60 0 TUE sto 10 mr 1 enn o G5mm2 stem Umso e0 9 orem stem 5 stem sow 415 50 60 29 10 6mm 10 6mm Tom som 10 mm Also called inverse time or thermal magnetic circuit breakers circuit breakers which have a delay in tripping action that decreases as the magni tude of the current increases TILTING Do not place the machine on a surface that is inclined enough to create a risk of the machine falling over CV 250 LINCOLN 8 A 3 FIELD INSTALLED OPTIONS For installation of compatible field installed options see the ACCESSORIES section of this manual and refer to the instructions included with those options REQUIRED EQUIPMENT CONTROL CABLE CONNECTIONS Follow the instructions below which are appropriate for the wire feeder that will be used LN 7 to CV 250 a Turn the CV 250 Power switch to the OFF posi tion b Connect the LN 7 control cable to the wire feeder receptacle on the CV 250 c See OUTPUT CONNECTIONS for connection of work and electrode cables LN 25 to CV 250 8 Turn the CV 250 Power switch to the OFF posi tion b Plug a K484 jumper plug into the CV 250 wire feeder receptacle c See OUTPUT CONNECTION
Download Pdf Manuals
Related Search