Lincoln Electric IM10088 SAE-300 - Manual (Page 19)

D-1 MAINTENANCE D-1
SAFETY PRECAUTIONS
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 manufacturerʼs manual.
COOLING SYSTEM
The SAE-300 ® is equipped with a pressure radiator.
Keep the radiator cap tight to prevent loss of coolant.
Clean and flush the cooling system periodically to pre-
vent 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.
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 rotat-
ing armature when stoning the commutator.
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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.
SAE-300 ®
Have qualified personnel do the maintenance
work. Turn the engine off before working inside
the machine. In some cases, it may be neces-
sary to remove safety guards to perform
required maintenance. Remove guards only
when necessary and replace them when the
maintenance requiring their removal is com-
plete. Always use the greatest care when work-
ing near moving parts.
Do not put your hands near the engine cooling
blower fan. If a problem cannot be corrected by
following the instructions, take the machine to
the nearest Lincoln Field Service Shop.
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ELECTRIC SHOCK can kill.
• Do not touch electrically live parts or
electrode with skin or wet clothing.
• Insulate yourself from work and
ground
• Always wear dry insulating gloves.
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ENGINE EXHAUST can kill.
• Use in open, well ventilated areas or
vent exhaust outside.
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MOVING PARTS can injure.
• Do not operate with doors open or
guards off.
• Stop engine before servicing.
• Keep away from moving parts.
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See additional warning information at
front of this operatorʼs manual.
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WARNING
WARNING