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SA-400I
®
SAFETY PRECAUTIONS
WARNING
Have qualified personnel do the maintenance work. Turn
the engine off before working inside the machine. 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 great-
est care when working near moving parts.
Do not put your hands near the engine cooling blower fan.
If a problem cannot be corrected by following the instruc-
tions, take the machine to the nearest Lincoln Field
Service Shop.
ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or elec-
trode with skin or wet clothing.
• Insulate yourself from work and ground
• Always wear dry insulating gloves.
ENGINE EXHAUST can kill.
• Use in open, well ventilated areas or vent
exhaust outside.
MOVING PARTS can injure.
• Do not operate with doors open or guards
off.
• Stop engine before servicing.
• Keep away from moving parts.
See additional warning information at front of this
operator's manual.
GENERAL INSTRUCTIONS
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. Follow the engine service schedule in this manual and the
detailed maintenance and troubleshooting in the engine
manufacturer's manual.
COOLING SYSTEM
The SA-400I® is equipped with a pressure radiator. Keep the
radiator cap tight to prevent loss of coolant. Clean and flush the
cooling system periodically to prevent clogging the passage and
overheating the engine. When antifreeze is needed, always use
the permanent type.
BEARINGS
This welder is equipped with a double synthetic sealed ball
bearing having sufficient grease to last indefinitely under normal
service.
WARNING
COMMUTATOR AND BRUSHES
Uncovered rotating equipment can be dangerous. Use care
so your hands, hair, clothing or tools do not catch in the
rotating parts. Protect yourself from particles that may be
thrown out by the rotating armature when stoning the com-
mutator.
Shifting of the commutator brushes may result in:
- Change in machine output
- Commutator damage
- Excessive brush wear
Periodically inspect the commutator, slip rings, and brushes by
removing the covers. DO NOT remove or replace these covers
while the machine is running. Commutators and slip rings
require little attention. However, if they are black or appear
uneven, have them cleaned by an experienced maintenance man
using fine sandpaper or a commutator stone. Never use emery
cloth or paper for this purpose.
CAUTION
IDLER MAINTENANCE
Before doing electrical work on the idler printed circuit
board, disconnect the battery.
-----------------------------------------------------------------
When installing a new battery or using a jumper battery to start
the engine, be sure the battery polarity is connected properly.
The correct polarity is negative ground. Damage to the engine
alternator and the printed circuit board can result from incorrect
connection.
1. Proper operation of the idler requires good grounding of the
printed circuit board, reed switch, and battery.
2. Idler solenoid is activated for low idle.
3. If desired, the welder can be used without automatic idling by
setting the "Idler" switch to the "High" position.
D-1
MAINTENANCE
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