Assessments - 3, GPA: 4.7
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Facilidade de uso
Polarity reversing switch may be in the neutral position. Exciter may have lost excitation. Be sure that all brushes bear on the commutator and have proper spring tension. Check exciter output voltage with voltmeter or lamp. Check for open circuits in rheostat, field leads and field coils. Also check resistors. Put handle in positive or negative position. Check components and continuity in flashing circuit. Welding arc is loud and spatters excessively. Series field circuit may be open circuited. Current setting may be too high. Polarity may be wrong. Check circuit with ringer or voltmeter. Check setting and current output with ammeter. Check polarity. Try reversing polarity or try an electrode of the opposite polarity. 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. SAE400 WELD’N AIR E-4 E-4 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS (SYMPTOMS) POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION FUNCTION PROBLEMS Welding current too great or too small compared to indication on the dial. “Current Control” shaft and handle may have turned slightly in the insulated bushing of the current control brushholder, caused by turning handle too hard against one of the stops. Exciter output low causing low output compared to dial indication. “Current Control” set to minimum and welder output so great that engine stalls when arc is struck. With current control against the minimum stop, set pointer to within 1/8” of the last scale division. Check for shorts in exciter armature with growler. Check to see that series field is properly connected and not shorted. Welder has output and no control Local/Remote switch is in wrong position. Place switch in “LOCAL” position to control output at the welder. Place switch in “REMOTE” position to control output remotely. 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. SAE400 WELD’N AIR E-5 E-5 TROUBLESHOOTING Observe all Safety Guidelines detailed throughout this manual PROBLEMS (SYMPTOMS) POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION FUNCTION PROBLEMS No auxiliary power Circuit Breakers open. Faulty connections to auxiliary receptacles. Check and reset breakers. If breakers keep tripping check connections to auxiliary receptacles. Also make sure load does nor exceed receptacle’s current rating. Check connections. 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. SAE400 WELD’N AIR F-1F-1 WIRING DIAGRAMS - C-RW CONTROL WIRING DIAGRAM - SAE-400 WELD’N AIR NEG M18827 (WIDE SLOT) B 4 2F G W 2 B N G UREACTOR GROUND N ELECTRICAL SYMBOLS PER E1537 WHITETERMINALS 230V DUPLEXRECEPTACLE G W G GROUNDSCREW G R+ G REMOTE CONTROLWREMOTE CONTROL (SHOWNCONNECT TO CASEPLUG FORREMOTE CONTROL RESISTORS 3 GGRECEPTACLE FOR REMOTECONTROL RHEOSTAT500 (-) RHEOSTAT BOXSWITCH FOR LOCAL OR 41 IN LOCAL POSITION)TERMINAL(WIDE TAB)TERMINALCOPPERGROUND TERMINAL U 2 E AUXILIARY A B B ALTERNATORR W 3115V DUPLEXRECEPTACLECB4CB3CB2CB1 B FRONT VIEWOF RECEPTACLES POWER WDG. NOTE: This diagram is for reference only. It may not be accurate for all machines covered by this manual. Thespecific diagram for a particular code is pasted SAE400 WELD’N AIR F-2F-2 WIRING DIAGRAMS M18777 ENGINE WIRING DIAGRAM - SAE-400 WELD’N AIR from moving parts, and insure all guards orcovers are replaced after servicing. DAILY CHECKS:- Electrode and work connections are tight. - Rotate the current control twice to cleancontacts. - All equipment in serviceable condition.AS REQUIRED:- Blow dust from the machine using clean lowpressure air. - Clean commutators or slip rings with fineOperating Manual for instructions. - Replace brushes before the pigtail is within1/4" of the commutator. See the OperatingManual for instructions. - Grease may be added to bearings no more thanonce a year. See instructions in theOperating Manual. MOVINGPARTSCAN INJURE - Have only qualified personnel performY B + EXCTO FLASHING DIODE + - ENGINE HOUR METER IGNITER + - SMOTOR + + - - START AMMETER G N O NC S B FUSE(SFE 14) OIL PRESSURESWITCH (N.C.) TEMPERATURE GAGEFUEL INJECTION PUMP FUEL SHUTOFF VALVE - Keep hands, hair, clothing and tools awaymaintenance work. - Turn the engine or input power OFF beforemaintenance work unless the maintenance workrequires it to be running. STARTING THERMOSTART THERMOSTART sandpaper-NOT EMERY CLOTH. See the ALTERNATOR RELAYPROTECTIONENGINE IGNITIONSWITCH MAINTENANCE INSTRUCTIONS COLDTERMINALLEAD APPEARS ON EARLIER UNITS ONLY G G ENGINE GRO...