Lincoln Electric IM581 - Manual (Page 19)

B-5 OPERATION B-5
ENGINE OPERATION
Do not adjust the high idle engine speed (rpm) above
the factory setting specification as this will overspeed
the air compressor and void it’s warranty.
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STARTING INSTRUCTIONS
Be sure all Pre-Operation Maintenance has been per-
formed. (See INSTALLATION section of this manual).
Set the air compressor “ON/OFF” switch in the “OFF”
position. To start the engine, set the speed control lever
in the “RUN” position. Place ignition toggle switch in
the “ON” position. Push in the engine protection sys-
tem reset button. Engage the starter button. When the
engine starts running, observe the engine oil pressure.
If no pressure shows within 30 seconds, stop the
engine and consult the engine operating manual. To
stop the engine, place the ignition toggle switch in the
“OFF” position.
When an engine is started for the first time, some of the
oil will be needed to fill the passages of the lubricating
system. Therefore, on initial starting, run the engine for
about five minutes and then stop the engine and
recheck the oil. If the level is down, fill to the full mark
again. The engine controls were properly set at the fac-
tory and should require no adjusting when received.
For added safety always operate the welder with the
doors closed. Further, leaving the doors open changes
the designed air flow and may cause engine, generator
or compressor overheating.
Cold Weather Starting
Never use any other starting aids, such as ether, when
using the “Thermostart” system.
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When overnight temperatures are between 10°F (-
12°C) and freezing, use the standard “Thermostart”
starting system installed on all engines. Follow the
instructions on the start panel nameplate and in the
engine manual shipped with the welder.
With fully
charged batteries and the proper weight oil, the
“Thermostart” system operates satisfactorily even
down to about 0°F (-18°C).
If the engine must be frequently started below 10°F
(-12°C), it may be desirable to remove the
“Thermostart” and install the optional ether starter kit.
Installation and operating instructions are included in
the kit. Use ether starting only when required because
excessive use shortens engine life.
BREAK-IN PERIOD
ENGINE
The engine used to supply power for your welder is a
heavy duty, industrial engine. It is designed and built
for rugged use. It is very normal for any engine to use
small quantities of oil until the break-in is accom-
plished. Check the oil level twice a day during the
break-in period (about 100 running hours).
IMPORTANT: IN ORDER TO ACCOMPLISH THIS
BREAK-IN, THE UNIT SHOULD BE SUBJECTED TO
HEAVY LOADS, WITHIN THE RATING OF THE
MACHINE. AVOID LONG IDLE RUNNING PERIODS.
AIR COMPRESSOR
Cylinder head stud torque must be checked after initial
8 to 10 hours of operation. See compressor operator’s
manual for details. Compressor mounting bolts should
be checked for tightness after initial 8 to 10 hours of
operation.
TYPICAL FUEL CONSUMPTION
The typical fuel consumption of the SAE400 WELD’N
AIR for various operating scenarios is shown below:
Low Idle - No Load .35 gal./ hr.
1100 RPM (1.32 L./hr.)
High Idle - No Load .75 gal./hr.
1800 RPM (2.84 L./hr.)
Welding Load 1.92 gal./hr.
400 Amps, 40 Volts (7.27 L./hr.)
Auxiliary Power .96 gal./hr.
3000VA (3.63 L./hr.)
Air Compressor 1.04 gal./hr.
(3.94 L./hr.)
400 Amps, 40 Volts Load 2.22 gal./hr.
with Air Compressor “ON” (8.40 L./hr.)
Auxiliary Power 1.20 gal./hr.
3000 VA with (4.54 L./hr.)
Air Compressor “ON”
SAE400 WELD’N AIR
WARNING
CAUTION