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E-2

TROUBLESHOOTING

E-2

SAE400 & SAE400 WELD

N AIR

Observe all Safety Guidelines detailed throughout this manual

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.

CAUTION

FUNCTION PROBLEMS

PROBLEMS

(SYMPTOMS)

POSSIBLE CAUSE

RECOMMENDED

COURSE OF ACTION

Machine fails to hold the “heat” 
constantly.

Rough or dirty commutator.

Brushes may be worn down to limit
of life.

Brush springs may be broken.

Field circuit may have variable resis-
tance connections or intermittent
open circuit, due to loose connec-
tions or broken wire.

Electrode or work lead connections
may be poor.

Wrong grade of brushes may be
installed on generator.

Field rheostat may be making poor
contact and overheating.

“Current Control” may not be operat-
ing properly.

“Current Control” brushholder con-
tact springs may be worn out or
missing. Contact surface may be
dirty, rough and pitted.

“Current Control” brushholder sup-
port stud and mating contact sur-
faces may be dirty or pitted and
burned.

Engine running at varying speeds.

True and clean commutator.

Replace brushes.

Replace brush springs.

Check field current with ammeter to
discover varying current. This
applies to both the main generator
and exciter.

Tighten all connections.

Use only the recommended Lincoln
brushes.

Inspect and clean rheostat.

Check for loose or missing set
screw in control handles.

Inspect. Replace needed parts.
Clean internal contact surface of
control device. Do not lubricate.
Smooth rough surfaces.

If brushholder internal contact sur-
face is pitted and burned, replace
the brushholder and support stud. If
the contact surface is dirty, clean off
the brushholder stud and internal
contact surface. Apply mixture of
three parts silicone grease and one
part zinc powder (by weight) to stud.

Set welder controls for maximum
output and weld. Then, while weld-
ing, check engine rpm. The engine
should be running at full speed. If
indicator shows a significant differ-
ence, consult your engine manual.

Summary of Contents for SAE400 WELD'N AIR

Page 1: ...reased by proper installation and thoughtful opera tion on your part DO NOT INSTALL OPERATE OR REPAIR THIS EQUIPMENT WITHOUT READING THIS MANUAL AND THE SAFETY PRECAUTIONS CONTAINED THROUGHOUT And mos...

Page 2: ...R WEARERS 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...

Page 3: ...ical earth ground 3 f Maintain the electrode holder work clamp welding cable and welding machine in good safe operating condition Replace damaged insulation 3 g Never dip the electrode in water for co...

Page 4: ...vent 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...

Page 5: ...s appropri s et non inflammables 4 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 pai...

Page 6: ...v SAFETY v WARNING Assure that tank and compressor relief valves work properly and are at correct pressure settings NEVER move compressor with pressure in tank DO NOT modify or repair air tank...

Page 7: ...vi SAFETY vi...

Page 8: ...ation below for future reference This information can be found on your machine nameplate Product _________________________________________________________________________________ Model Number ________...

Page 9: ...1 General Description B 1 Recommended Applications B 2 Welder B 2 Auxiliary Power B 2 Compressed Air B 2 Product Application B 2 Design Features and Advantages B 2 Duty Cycle B 2 Engine Controls Funct...

Page 10: ...OR AIR COMPRESSOR OUTPUT SAE400 WELD N AIR ONLY Duty Cycle 1 Welding Output Volts at Rated Amps 60 NEMA 400 amps 36 volts 60 Lincoln Plus 400 amps 40 volts Welding Range Open Circuit Voltage Auxiliary...

Page 11: ...urface directly under stationary or fixed electrical equipment that surface should be covered with a steel plate at least 06 1 6mm thick which should extend not less than 5 90 150mm beyond the equipme...

Page 12: ...es lights fend ers etc VEHICLE MOUNTING Improperly mounted concentrated loads may cause unstable vehicle handling and tires or other compo nents to fail Only transport this equipment on serviceable ve...

Page 13: ...oading occasional moder ate to heavy loading of the engine may sometimes be necessary Caution must be observed in correctly loading a diesel generator unit 1 Connect the welder output studs to a suita...

Page 14: ...pper cable sizes recom mended for the rated current and duty cycle Lengths stipulated are the distance from the welder to work and back to the welder again Cable sizes are increased for greater length...

Page 15: ...er cooled diesel made by Perkins OPERATING INSTRUCTIONS Read and understand this entire section before operat ing your equipment SAFETY INSTRUCTIONS Do not attempt to use this equipment until you have...

Page 16: ...mits shown on the chart below OTHER FEATURES Perkins 4 cylinder water cooled diesel engine Designed for long life easy maintenance and excel lent fuel economy Engine protection system shuts the engine...

Page 17: ...ge ENGINE HOUR METER The engine hour meter records the total running time on the engine in hours It can be used to keep a record of maintenance on the engine and or welder ENGINE PROTECTION SYSTEM The...

Page 18: ...AC Receptacle One 15 amp 230 VAC duplex receptacle provides 230 VAC for auxiliary power A total of 13 amps can be drawn from this receptacle Circuit Breakers The circuit breakers provide separate over...

Page 19: ...d may cause engine genera tor or compressor overheating COLD WEATHER STARTING Never use any other starting aids such as ether when using the Thermostart system When overnight temperatures are between...

Page 20: ...mage to electric wiring or to the arc welder if done improperly The use of an arc welder for pipe thawing is not approved by the CSA nor is it recommended or supported by Lincoln Electric K704 Standar...

Page 21: ...to avoid driving dirt into the insulation 2 The current control reactor brushes are self lubricating and should not be greased Keep the contacts clean This control should be moved from maximum to mini...

Page 22: ...n direction of rotation only until brushes seat properly In addition stone slip ring with a fine stone Brushes must be seated 100 Arcing or excessive exciter brush wear indicates a pos sible misaligne...

Page 23: ...er clockwise approximately 1 2 turn and slide it down and off of the element 3 Grasp the element and pull down with a slight rock ing motion to remove the element from the grom met post on the bottom...

Page 24: ...PART NUMBER Engine Air Filter Donaldson P181052 Fan Belt Perkins 2614B550 Compressor Belt Lincoln S23887 SAE400 WELD N AIR only Gates 2 A40 Fuel Filter Perkins 26560143 Engine Oil Filter Perkins 2654...

Page 25: ...der the column labeled PROBLEM SYMP TOMS This column describes possible symptoms that the machine may exhibit Find the listing that best describes the symptom that the machine is exhibiting Step 2 POS...

Page 26: ...ngs may be worn out or missing Contact surface may be dirty rough and pitted Current Control brushholder sup port stud and mating contact sur faces may be dirty or pitted and burned Engine running at...

Page 27: ...or missing Exciter may not be operating Field circuit of generator or exciter may be open Polarity reversing switch may be in the neutral position Exciter may have lost excitation Series field circuit...

Page 28: ...ntrol Current Control shaft and handle may have turned slightly in the insu lated bushing of the current control brushholder caused by turning han dle too hard against one of the stops Exciter output...

Page 29: ...n Authorized Field Service Facility for technical troubleshooting assistance before you proceed CAUTION FUNCTION PROBLEMS PROBLEMS SYMPTOMS POSSIBLE CAUSE RECOMMENDED COURSE OF ACTION No auxiliary pow...

Page 30: ...U BLUE W WHITE Y YELLOW B 235 PARTS CAN INJURE MOVING maintenance work maintenance work unless the maintenance work Keep hands hair clothing and tools away requires it to be running Turn the engine or...

Page 31: ...r input power OFF before Have only qualified personnel perform WARNING from moving parts and insure all guards or covers are replaced after servicing AS REQUIRED DAILY CHECKS LEAD COLOR CODE MAINTENAN...

Page 32: ...REMOTE CONTROL SHOWN IN LOCAL POSITION Y 4 Y 3 X 1 X 4 2 P8 G G Y W W 2 B ELECTRICAL SYMBOLS PER E1537 B B B B B 3 W REMOTE CONTROL RECEPTACLE AND SWITCH REACTOR G N U G F 5 G 4 ALTERNATOR BACK VIEW O...

Page 33: ...ON PRINT F 4 18 50 22 14 22 00 27 12 24 50 8 12 3 00 88 43 75 63 06 39 69 50 13 28 00 32 87 6 00 81 25 69 75 77 00 39 38 44 50 8 90 83 00 81 DIA HOLES 69 DIA HOLES CENTER OF GRAVITY WITH OIL AND WATER...

Page 34: ...SAE400 SAE400 WELD N AIR NOTES...

Page 35: ...n Sie f r gute Be und Entl ftung des Arbeitsplatzes Mantenha seu rosto da fuma a Use ventila o e exhaust o para remover fumo da zona respirat ria Turn power off before servicing Desconectar el cable d...

Page 36: ...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 d...

Page 37: ...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 World s Leader in Welding and Cutting Pr...

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