Lincoln Electric SA-250 manual

S A-250 PERKINS Diesel Engine Driven DC Arc W elding Po wer Source OPERA TOR’S MANUAL For use with machines having Code Number 10073 or 10073CV: 10074 IM518-A October, 2000 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[...]

FOR ENGINE powered equipment. 1.a. Turn the engine off before troubleshooting and maintenance work unless the maintenance work requires it to be running. ____________________________________________________ 1.b. Operate engines in open, well-ventilated areas or vent the engine exhaust fumes outdoors. ________________________________________________[...]

ii SAFETY ii ARC RA YS can burn. 4.a. Use a shield with the proper filter and cover plates to protect your eyes from sparks and the rays of the arc when welding or observing open arc welding. Headshield and filter lens should conform to ANSI Z87. I standards. 4.b. Use suitable clothing made from durable flame-resistant material to protect your skin[...]

FOR ELECTRICALL Y powered equipment. 8.a. Turn off input power using the disconnect switch at the fuse box before working on the equipment. 8.b. Install equipment in accordance with the U.S. National Electrical Code, all local codes and the manufacturer ’ s recommendations. 8.c. Ground the equipment in accordance with the U.S. National Electrical[...]

iv SAFETY iv PR É CA UTIONS DE S Û RET É Pour votre propre protection lire et observer toutes les instruc- tions et les pr é cautions de s û ret é specifiques qui parraissent dans ce manuel aussi bien que les pr é cautions de s û ret é g é n é rales suivantes: S û ret é Pour Soudage A L ’ Arc 1. Protegez-vous contre la secousse é le[...]

Thank You for selecting a QUALITY product by Lincoln Electric. We want you to take pride in operating this Lincoln Electric Company product ••• as much pride as we have in bringing this product to you! Read this Operators Manual completely before attempting to use this equipment. Save this manual and keep it handy for quick reference. Pay par[...]

– 6 – T ABLE OF CONTENTS Page GENERAL DESCRIPTION ..................................................................................................7 DESIGN SUMMARY ............................................................................................................7 OPTIONAL FEATURES .....................................................[...]

GENERAL DESCRIPTION The SA-250 is a heavy duty engine-driven DC arc welding power source capable of providing constant current output for stick welding or DC TIG welding. With the addition of the optional Wire Feed Module for K1283-4, the SA-250 will provide constant voltage output for running the LN-25, LN-23P or LN-7 wire feeders. The Wire Feed M[...]

OPTIONAL FEA TURES Accessory Set (K703) Includes electrode and work cables, headshield, work clamp, and electrode holder. Ether Start Kit (K793-1) for P erkins Engine When frequent starting is expected below 10 ° F (-12 ° C), remove the “ thermostart ” system and install the optional ether start kit to provide maximum cold weather starting as[...]

– 9 – Product Name Description Horsepower Operating Speeds Displacement Capacities Perkins D3.152 3 Cylinder, 4 Cycle, Water-Cooled Diesel Engine with Thermostart Glow Plug and Engine Protection Full Load: 38.2 HP @ 1725 RPM Full Load: 1725 RPM High Idle: 1800 RPM Low Idle: 1350 RPM 152 Cu. in. (2.5 ltrs) Fuel: 15 gals (57 ltrs) Oil: 7.2 qts (6[...]

PRE-OPERA TION INST ALLA TION Safety Precautions Exhaust Spark Arrester Some federal, state or local laws may require that diesel engines be equipped with exhaust spark arresters when they are operated in certain locations where unarrested sparks may present a fire hazard. The standard mufflers included with these welders do not qualify as a spark [...]

3. Proper placement of the equipment on the under- carriage to ensure stability side to side and front to back when being moved and when standing by itself while being operated or serviced. 4. Typical conditions of use, i.e. travel speed, rough- ness of surface on which the trailer will be operat- ed, environmental conditions & likely maintenan[...]

– 12 – Battery Charging The SA-250 is equipped with a wet charged battery. The charging current is automatically regulated when the battery is low (after starting the engine) to a trickle current when the battery is fully charged. When replacing, jumping or otherwise connecting the battery to the battery cables, the proper polarity must be obse[...]

ENGINE OPERA TION Operate the welder with the doors closed. Leaving the doors open changes the designed air flow and can cause overheating. Starting the Perkins D3.152 Engine a) Turn the idler control to “ HIGH ” . b) Turn the ignition control to “ ON ” . c) Push in the “ RESET ” button. d) Press the “ START ” button. Release button[...]

When a forceful “ digging ” arc is required, usually for vertical and overhead welding, use a higher “ Current Range Selector ” setting and lower open circuit volt- age. For example: to obtain 175 amps and a forceful arc, set the “ Current Range Selector ” to the 240-160 position and the “ Fine Current Adjustment ” setting to get 17[...]

MAINTENANCE General Instructions for Diesel Engine W elders 1. Blow out the welder and controls with an air hose at least once every two months. In particularly dirty locations, this cleaning may be necessary once a week. Use low pressure air to avoid driving dirt into the insulation. 2. “ Current Range Selector ” contacts should not be greased[...]

3. Change the crankcase oil at regular intervals using the proper grade of oil as recommended in the engine operating manual. 4. Change the oil filter in accordance with the instruc- tions in the engine operator ’ s manual. When the filter is changed, add a quart of oil to the crankcase to replace the oil held in the filter during operation. 5. I[...]

Idler Maintenance Before doing electrical work on the idler printed circuit board, disconnect the battery. ------------------------------------------------------------------------ 1. The solenoid plunger must work freely because binding can cause engine surging. If surging occurs, be sure the plunger is properly lined up with the throttle lever. Du[...]

– 18 – TROUBLE A. Machine fails to hold the “ heat ” consistently. B. Welder starts but fails to gener- ate current. C. Welding arc is loud and spat- ters excessively. CA USE 1. Rough or dirty commutator. 2. Brushes may be worn down to limit. 3. Field circuit may have variable resistance connection or inter- mittent open circuit due to loos[...]

– 19 – TROUBLE D. Welding current too great or too small compared to indica- tion on the dial. E. Arc continuously pops out. CA USE 1. Exciter output low causing low output compared to dial indica- tion. 2. Operating speed too low or high. 1. “ Current Range Selector ” switch may be set at an intermediate position. W H A TT OD O 1. Check ex[...]

– 20 – ELECTRONIC IDLER TROUBLESHOO TING GUIDE Engine Will Not Return to Idle in Approximately 15 Seconds Set Idler Control Switch to the Auto Position Check to see Whether Oil Pressure Light is On and Alternator is Charging Light OFF Light ON If Oil Light is O.K., Replace Check Continuity of Idler Oil Pressure Switch Control Switch Continuity [...]

– 21 – CONTROL PANEL COMPONENTS LEAD COLOR CODE B-BLACK G-GREEN N-BROWN B R + - + - Y R W B B U U SLIP RINGS TO IRON R N A 54 3 2 1 ALTERNATOR AUXILIARY POWER WINDINGS CURRENT TRANSFORMER CB3 CB1 115 VOLT RECEPTACLE 230 VOLT RECEPTACLE Y NEGATIVE SELECTOR SWITCH WELDER LEAD BLOCK AC AC CR2 REED RELAY 42 602A G U CB2 CB4 FUSE 15A. 1 2 3 4 5 6 7 [...]

– 22 – 16.53 22.14 22.00 27.12 .88 M8869-24 7-28-95E 24.50 8.12 3.00 31.75 52.94 32.82 43.13 28.00 20.91 6.00 65.25 53.75 61.00 35.10 67.00 * = .81 DIA HOLES = .69 DIA HOLES * * CENTER OF GRAVITY WITH OIL AND WATER IN ENGINE, BUT NO FUEL. 45.07 * 48.50 DIMENSION PRINT[...]

NO TES[...]

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W ARNING A VISO DE PRECA UCION A TTENTION W ARNUNG A TEN ÇÃ O Spanish French German Portuguese Japanese Chinese Korean Arabic READ AND UNDERST AND THE MANUF ACTURER’S INSTRUCTION FOR THIS EQUIPMENT AND THE CONSUMABLES TO BE USED AND FOLLOW YOUR EMPLOYER’S SAFETY PRACTICES. SE RECOMIENDA LEER Y ENTENDER LAS INSTRUCCIONES DEL F ABRICANTE P ARA [...]

W ARNING A VISO DE PRECA UCION A TTENTION W ARNUNG A TEN ÇÃ O Spanish French German Portuguese Japanese Chinese Korean Arabic LEIA E COMPREENDA AS INSTRU ÇÕ ES DO F ABRICANTE P ARA ESTE EQUIP AMENTO E AS P ARTES DE USO, E SIGA AS PR Á TICAS DE SEGURAN Ç A DO EMPREGADOR. ● Keep your head out of fumes. ● Use ventilation or exhaust to remove[...]

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