Duty Cycle - Lincoln Electric 12666 Operator's Manual

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B-4
15. ELECTRIC FUEL GAUGE-
gauge gives accurate and reliable indication as to
how much fuel is in the fuel tank.
16. ENGINE HOUR METER-
time that the engine has been running. This meter
is useful for scheduling prescribed maintenance.
17. ENGINE PROTECTION LIGHT-
indicator light for Low Oil Pressure and/or Coolant
Over Temperature. The light is off when the sys-
tems are functioning properly. The light turns on
when the RUN-STOP switch is in the "ON" posi-
tion prior to starting the engine. If the Engine
Protection or Battery Charging Lights do "not"
turn off shortly after starting the engine shut off
the engine immediately and determine the cause.
STARTING 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. Press Glow Plug Button and hold 5 to 10 seconds.
5. Press and hold both the "Glow Plug" Button and
START button together until the engine starts or for
up to 10 seconds.
6. Release the engine START button immediately
when the engine starts.
7. Release the glow plug button after the Engine
Protection Light turns off or after an additional 5
seconds maximum.
8. The engine will run at high idle speed for approxi-
mately 12 seconds and then drop 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.
Low Idle - No Load
2450 R.P.M.
High Idle - No Load
3650 R.P.M.
DC Weld Output
250 Amps @ 28 Volts
DC Weld Output
300 Amps @ 29 Volts
9,500 Watts
7,000 Watts
3,000 Watts
OPERATION
The electric fuel
Displays the total
A warning
TYPICAL RANGER® 305D FUEL CONSUMPTION
Kubota D722
Gal./Hr (Liters/Hr)
.29 (1.09)
.54 (2.06)
1.03 (3.91)
1.18 (4.47)
1.16 (4.38)
.96 (3.63)
.70 (2.67)
RANGER® 305D
NOTE: If the unit fails to start repeat step 4 through
step 7 after waiting 30 seconds
• Do not allow the starter motor to run continuously
for more than 20 seconds.
• Do not push the START button while the engine
is running because this can damage the ring
gear and/or the starter motor.
• IF the Engine Protection or Battery Charging
Lights do "not" turn off shortly after starting the
engine shut off the engine immediately and deter
mine the cause.
--------------------------------------------------------------------------------
NOTE: When starting a RANGER® 305D for the first
time, or after and extended period of time of not oper-
ating, it will take longer than normal because the fuel
pump has to fill the fuel system.
STOPPING THE ENGINE
Remove all welding and auxiliary power loads and
allow the engine to run at low idle speed for a few
minutes to cool the engine.
STOP the engine by placing the RUN-STOP switch in
the STOP position.
NOTE: A fuel shut off valve is located on the fuel pre-
filter.
WELDER OPERATION

DUTY CYCLE

Duty Cycle is the percentage of time the load is being
applied in a 10 minute period. For example a 60% duty
cycle, represents 6 minutes of load and 4 minutes of no
load in a 10 minute period.
TABLE B.1
CAUTION
Running time for
12 gallons-hours
41.77
22.02
11.62
10.16
10.37
12.50
17.03
B-4

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