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Table B.2 – DEUTZ F3L 912
ENGINE FUEL CONSUMPTION
Deutz F3L 912 Running Time
44.2 Hp for 25 gallons
@ 1800 RPM (Hours)
Low Idle - No .47 gallons/hour 53.2
Load 1475 RPM (1.77 liters/hour)
High Idle - No .66 gallons/hour 37.9
Load 1900 RPM (2.50 liters/hour)
DC CC Weld 1.94 gallons/hour 12.9
Output 500 (7.34 liters/hour)
Amps @ 40 Volts
Auxiliary Power 1.31 gallons/hour 19.1
12,000 VA (4.96 liters/hour)
WELDER OPERATION
STICK WELDING
The Commander 500 can be used with a broad range
of DC stick electrodes.
The “WELD MODE” switch provides five overlapping
slope controlled current ranges. The OUTPUT adjusts
the current from minimum to maximum within each
range. Voltage is also controlled by the OUTPUT in the
slope controlled setting. These slope controlled set-
tings are intended for “out-of-position” welding, includ-
ing pipe welding, where the operator would like to con-
trol the current level by changing the arc length.
PIPE WELDING
The Commander 500 is equipped with special circuitry
to minimize pop-outs in the five slope modes at any
open circuit voltage.
For a soft arc characteristic, set the WELD MODE
switch to the lowest setting that still provides the cur-
rent you need and set the OUTPUT near maximum.
For example: to obtain 140 amps and a soft arc, set
the WELD MODE switch to the 150 MAX position and
then adjust the OUTPUT for 140 amps.
When a forceful, "digging" arc is required, use a higher
setting and lower the open circuit voltage. For example:
to obtain 140 amps and a forceful arc, set the WELD
MODE to the 250 MAX position and then adjust the
OUTPUT to get 140 amps.
CONSTANT CURRENT (CC) WELDING
In the CC - STICK position of 30 to 575, the WELD
MODE switch is designed for horizontal welds with all
types of electrodes, especially low hydrogen. The
OUTPUT adjusts the full range of 30 to 575 amps. This
setting provides a soft, constant current arc. If a more
forceful arc is desired, select the proper range from the
slope controlled current ranges.
In the CC mode, sticking can be prevented by adjust-
ing the ARC CONTROL. Turning this control clockwise
increases the short circuit current, thus preventing
sticking. This is another way of increasing arc force.
TIG WELDING
The furthest position clockwise of the WELD MODE
switch is for TIG welding in the range of 20 amps to 250
amps, with a “Touch Start” feature. To initiate a weld,
the OUTPUT is first set to the desired current, and the
tungsten is touched to the work. During the time the
tungsten is touching the work, there is very little voltage
or current and, in general, no tungsten contamination.
Then, the tungsten is gently lifted off the work in a rock-
ing motion, which establishes the arc.
The Commander 500 can be used in a wide variety of
DC Tungsten Inert Gas (TIG) welding applications. In
general the “Touch Start” feature allows contamination-
free starting without the use of a Hi-Freq unit. But the
K930-1 or -2 TIG module or K799 Hi-Freq unit can be
used with the Commander 500. The settings for these
follow the tungsten current range table, Table B.3.
B-9 B-9
OPERATION
COMMANDER 500
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