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STOPPING THE ENGINE
1. Switch the RUN/STOP switch to “STOP.” This turns
off the voltage supplied to the shut down solenoid. A
backup shut down can be accomplished by shutting
off the fuel valve located on the fuel filter housing.
BREAK-IN PERIOD
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 200 running hours).
During break-in, subject the Commander 400 to heavy
loads. Avoid long periods running at idle. Before stop-
ping the engine, remove all loads and allow the engine
to cool several minutes.
The heavy loading of the engine during break-in, with-
in the rating of the machine, is recommended to prop-
erly seat the piston rings and prevent wetstacking.
Wetstacking is an accumulation of unburned fuel
and/or lubricant in the form of a wet, black, tar-like sub-
stance in the exhaust pipe. The rings are seated and
the break-in period is complete when there are no
longer any signs of wetstacking, which should occur
within the first 50 to 100 hours of operation.
Using your welder at low amperages with long idle run-
ning periods during the break-in period may result in a
glaze forming on the engine cylinder walls and the
rings not seating properly. No amount of loading will
properly seat the piston rings after they are glazed
over.
TYPICAL FUEL CONSUMPTION
Refer to Table B.2 for typical fuel consumption of the
Commander 400 engine for various operating scenar-
ios.
Table B.2 Deutz F3L 912 Engine Fuel Consumption
OPERATION
B-9 B-9
COMMANDER 400
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CAUTION
Low Idle - No
Load 1350 RPM
High Idle - No
Load 1900 RPM
DC CC Weld
Output 400
Amps @ 40
Volts
Auxiliary Power
10,000 VA
.30 gallons/hour
(1.36 liters/hour)
.78 gallons/hour
( 3.55 liters/hour)
1.84 gallons/hour
( 8.36 liters/hour)
1.32 gallons/hour
(6.00 liters/hour)
83.3
32.1
13.6
18.9
Deutz F3L 912
44.2 Hp
@ 1800 RPM
Running Time for
25 gallons
(Hours)
CAUTION