Duty Cycle - Lincoln Electric Ranger 3050 Operator's Manual

b-5
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.
NOTE: If the unit fails to start repeat step 4 through
step 7 after waiting 30 seconds
CAUTION
• 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.
--------------------------------------------------------------------------------
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
7,000 Watts
3,000 Watts
OPERATION
TAbLE b.1
TYPICAL Ranger® 305D (AU) FUEL CONSUMPTION
Kubota D722
Gal./Hr (Liters/Hr)
.29 (1.09)
.54 (2.06)
1.03 (3.91)
1.18 (4.47)
.96 (3.63)
.70 (2.67)
RANGER® 305D (AU)
NOTE: When starting a Ranger® 305D (AU) for the
first time, or after and extended period of time of not
operating, 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.
Running time for
12 gallons-hours
41.77
22.02
11.62
10.16
12.50
17.03
b-5