Lincoln Electric IM835 RED-D-ARC GX300 - Manual (Page 19)

B-3 OPERATION 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 11274
and above.
5. GROUND STUD:
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 GX
300. Includes contactor closure circuit , auto-sensing
remote control circuit, and 120V and 42V power. The
remote control circuit operates the same as the 3 Pin
connector.
7. 3 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 auto-
sensing circuit in the GX 300 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 GX 300, the OUTPUT con-
trol on the front of the GX 300 is used to set the maxi-
mum 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 - RUN position ener-
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 - Energizes the
starter motor to crank the engine.
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 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 l o a d
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 : Provides accu-
rate, reliable indication of amount of fuel in fuel tank.
15. ENGINE HOUR METER – Displays the total
time that the engine has been running. This meter is
useful for scheduling prescribed maintenance.
STARTING AND STOPPING THE ENGINE
• Remove all plugs connected to the AC power
receptacles.
• Set IDLER switch to AUTO.
• Set the RUN/STOP switch to RUN.
• Pull the choke to the full out position.
• Press and hold the engine START button until the
engine starts.
• Release the engine START button when the engine
starts.
• Push the choke back in.
• 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.
GX 300