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B-3
4. WELD OUTPUT TERMINALS WITH
FLANGE NUT:
Provides a connection point for the electrode and
work cables. Output stud covers provided on code 11270
and above.
5. GROUND STUD:
(graphic)
Provides a connection point for connecting the
machine case to earth ground for the safest grounding
procedure.
6. 14-PIN CONNECTOR:
For attaching wire feeder control cables to the
Ranger® 250. 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.
7. 6-PIN CONNECTOR:
For attaching optional remote control equipment.
When in the CC-STICK, PIPE, and CV-WIRE modes
and when a remote control is connected to the
Amphenol, the auto-sensing circuit in the Ranger®
250 automatically switches the OUTPUT control from
control at the welder to remote control .
When using the TOUCH START TIG mode with a
TIG Module connected to the Ranger® 250, the OUT-
PUT control on the front of the Ranger® 250 is used
to set the maximum current range of the CURRENT
CONTROL on the TIG Module.
8. WELD TERMINALS CONTROL SWITCH:
In 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.
9. WIRE FEEDER VOLTMETER SWITCH:
Matches the polarity of the wire feeder voltmeter to
the polarity of the electrode.
ENGINE CONTROLS:
10. 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.
11. CHOKE
- When pulled out, it closes the choke
valve on the engine carburetor for quick starting.
12. START PUSH BUTTON
starter motor to crank the engine.
OPERATION
- RUN position ener-
- Energizes the
RANGER® 250
13. IDLER SWITCH
- Has two positions as follows:
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 starting
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
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.
14. ELECTRIC FUEL GAUGE
The electric fuel gauge gives accurate and reliable
indication as to how much fuel is in the fuel tank.
15. ENGINE HOUR METER
Displays the total time that the engine has been run-
ning. This meter is useful for scheduling prescribed
maintenance.
STARTING AND STOPPING THE ENGINE
1. Remove all plugs connected
to the AC power receptacles.
2. Set IDLER switch to AUTO.
3. Set the RUN/STOP switch to RUN.
4. Pull the choke to the full out position.
5. Press and hold the engine START button until the
engine starts.
6. Release the engine START button when the engine
starts.
7. Push the choke back in.
8. The engine will run at high idle speed for approxi-
mately 12 seconds and then go to low idle speed.
Allow the engine to warm up at low idle for several
minutes before applying a load and/or switching to
high idle. Allow a longer warm up time in cold
weather.
B-3
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