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B-3
4. ARC CONTROL
active in the CV-WIRE, CC-STICK and DOWNHILL PIPE
modes, and has different functions in these modes. This
control is not active in the TIG mode.
CC-STICK mode: In this mode, the ARC CONTROL dial
sets the short circuit current (arc-force) during stick welding
to adjust for a soft or crisp arc. Increasing the dial from –10
(soft) to +10 (crisp) increases the short circuit current and
prevents sticking of the electrode to the plate while welding.
This can also increase spatter. It is recommended that the
ARC CONTROL be set to the minimum number without
electrode sticking. Start with a setting at 0.
DOWNHILL PIPE mode: In this mode, the ARC CONTROL
dial sets the short circuit current (arc-force) during stick
welding to adjust for a soft or a more forceful digging arc
(crisp). Increasing the number from –10 (soft) to +10 (crisp)
increases the short circuit current which results in a more
forceful digging arc. Typically a forceful digging arc is pre-
ferred for root and hot passes. A softer arc is preferred for
fill and cap passes where weld puddle control and deposi-
tion ("stacking" of iron) are key to fast travel speeds. It is
recommended that the ARC CONTROL be set initially at 0.
CV-WIRE mode: In this mode, turning the ARC CONTROL
clock wise from –10 (soft) to +10 (crisp) changes the arc
from soft and washed-in to crisp and narrow. It acts as an
inductance/pinch control. The proper setting depends
on the procedure and operator preference. Start with
a setting of 0.
5. WELD OUTPUT TERMINALS WITH
FLANGE NUT:
Provides a connection point for the
electrode and work cables.
6. GROUND STUD:
(graphic)
Provides a connection point for connecting the
machine case to earth ground.
7. 14-PIN CONNECTOR:
feeder control cables to the RANGER 305D. Includes
contactor closure circuit, auto-sensing remote control
circuit, and 120V and 42V power. The remote control
circuit operates the same as the 6 Pin Amphenol.
8. 6-PIN CONNECTOR:
remote control equipment. Includes auto-sensing
remote control circuit.
9. WELD TERMINALS CONTROL SWITCH:
the WELD TERMINALS ON position, the output is
electrically hot all the time. In the REMOTELY CON-
TROLLED position, the output is controlled by a wire
feeder or amptrol device, and is electrically off until a
remote switch is depressed.
OPERATION
: The ARC CONTROL dial is
For attaching wire
For attaching optional
RANGER 305D
10. WIRE FEEDER VOLTMETER SWITCH:
Matches the polarity of the wire feeder voltmeter to
the polarity of the electrode.
ENGINE CONTROLS: (Figure B.2)
11. RUN/STOP SWITCH
gizes the engine prior to starting. STOP position stops
the engine. The oil pressure interlock switch prevents
battery drain if the switch is left in the RUN position
and the engine is not operating.
12. GLOW PLUG PUSH BUTTON
When pushed activates the glow plugs as well as the
electric fuel pump for quick starting. Glow plug should
not be activated for more then 20 seconds continu-
ously.
AUTO BLEED FUNCTION – Air will automatically
bleed from the fuel system by simply pushing the
GLOW PLUG BUTTON. It is generally not required
to crack open fittings in the fuel system to bleed air
from the fuel system.
13. START PUSH BUTTON
Energizes the starter motor to crank
the engine.
14. IDLER SWITCH
1) In the HIGH position, the engine runs at the high
idle speed controlled by the engine governor.
2) In the AUTO position, the idler operates as follows:
• When switched from HIGH to AUTO or after start-
ing the engine, the engine will operate at full speed
for approximately 12 seconds and then go to low
idle speed.
• When the electrode touches the work or power is
drawn for lights or tools (approximately 100 Watts
minimum), the engine accelerates and operates at
full speed.
• When welding ceases or the AC power load is
turned off, a fixed time delay of approximately 12
seconds starts. If the welding or AC power load is
In
not restarted before the end of the time delay, the
idler reduces the engine speed to low idle speed.
• The engine will automatically return to high idle
speed when there is welding load or AC power
load reapplied.
FIGURE B.2
- RUN position ener-
-
- Has two positions as follows:
B-3
-
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