Miller Electric Welding System Engine Driven Welder AC Generator User Manual

Issued January 2008 • Index No. ED/4.33  
Engine-Driven Welder/  
AC Generator  
Bobcat 3 Phase  
Applications  
Processes  
Generator Power Output Rated at 104 F  
˚
3-Phase: 11,000 Watts Peak, 10,000 Watts Continuous  
1-Phase: 10,500 Watts Peak, 9,500 Watts Continuous  
Generator Power for:  
Stick (SMAW)  
Farm or Home Backup  
Flux Cored (FCAW)  
Pivot Irrigation Systems MIG (GMAW)  
Output Range  
Pumps  
Conveyors  
DC TIG (GTAW)  
For Stick/TIG: 50 – 225 Amps For FCAW/MIG (CV): 1928 Volts  
Quick  
Specs  
Non-Critical AC TIG (GTAW)  
Air Carbon Arc (CAC-A) Cutting  
and Gouging (3/16 in carbons)  
Air Plasma Cutting and Gouging  
with optional Spectrum models  
Weight 540 lb (245 kg)  
Welding:  
Farm Equipment Repair  
General Maintenance  
Fabrication  
Accu-RatedNot Inflated  
Generator Power  
®
The Power of Blue.  
Reliable Bobcat engine-driven  
welding generators are the  
Front Panel Fuel Gauge!  
LP Option!  
Fully Enclosed Case!  
industry standard for quality and  
value. Multiprocess weld output,  
strong generator power, and most  
important — rated #1 in reliability,  
make the Bobcat the welding  
industry’s most popular choice.  
More horsepower — 23 HP gas/  
®
25 HP LP Kohler provides more  
power for demanding weld and  
generator loads.  
Accu-Rated11,000 watts (peak),  
480 V, 3-phase power for running  
pivot irrigation systems, or  
emergency backup power for  
milking pumps and other motors.  
Heavy-duty construction! Engine,  
generator barrel, electrical switches  
and other components are protected  
against accidental impact.  
Accu-Rated10,500 watts (peak),  
120/240 V, 1-phase output provides  
plenty of power to run power tools,  
lights or emergency backup power  
for your barn or home.  
Exclusive! High-Impact Protective  
Armor  
• Protective armor with receptacle  
and output stud covers provides  
a virtually indestructible barrier  
from damage  
• High-impact resistance in all  
temperatures  
Other applications include:  
automotive bumpers, tractor hoods  
and panels, lawn mower decks,  
large structural parts, etc.  
Patented 12-gallon “smart” fuel tank has a  
reservoir design that minimizes the chance of  
fuel backflow. Large capacity means more  
running time before refueling. Fuel sight  
gauges are on both sides.  
Output stud and receptacle covers required by OSHA  
and CSA for job site safety.  
Ten-degree skewed-rotor design boasts better generator  
performance. See page 3 for more information.  
Fastextool-free oil drain  
system combined with hour  
meter makes service a snap.  
Total Parts Coverage Welder/generator and engine are  
warranted for 3 years, parts and labor. Engine is warranted  
separately by the engine manufacturer.  
Miller Electric Mfg. Co.  
An Illinois Tool Works Company  
1635 West Spencer Street  
Appleton, WI 54914 USA  
International Headquarters Web Site  
Phone: 920-735-4505  
USA FAX: 920-735-4134  
Canadian FAX: 920-735-4169  
International FAX: 920-735-4125  
 
The Bobcat Generator Power Advantage  
TYPICAL EQUIPMENT POWER USAGE  
Bobcat 3 Phase will easily start and run the following equipment:  
Accu-Rated – Not Inflated Generator Power  
Miller’s Accu-Rated11,000 watts of usable peak power is delivered for a  
minimum of 30 seconds. Accu-Rated means peak power is usable for  
maximum generator loads such as plasma cutting, Millermatics and motor  
starting. Accu-Rated peak power beats the competition’s very short-duration  
peak or surge power. Use your peak power, it’s more than a number.  
Equipment  
Pivot Irrigation (9–1 HP), 9 Tower  
Pivot Irrigation (6-3/4 HP, 3–1-3/4 HP, 1–1 HP),  
8 Tower with Corner Arm  
Starting Watts Running Watts  
Barn Cleaner (5 HP)  
Silo Unloader (5 HP)  
Portable Conveyor (1/2 HP)  
Milker (5 HP)  
11,600  
12,200  
3400  
10,500  
600  
3000  
4300  
1000  
2800  
600  
Bobcat  
Hand Drill (1/2 inch)  
Circular Saw (8-1/4 inch)  
Air Compressor (1-1/2 HP)  
Flood Lights (Vapor)  
Refrigerator/Freezer  
1400  
8200  
1250  
2200  
1300  
1400  
2200  
1000  
700  
Competitor  
Smooth Power – Not Spike Power  
Revolutionary ten-degree skewed-rotor design  
optimizes generator performance for smoother  
power—not spiked power found with other  
Sump Pump  
800  
®
Millermatic 212 MIG Welder 6500  
6500  
brands. Better power better performance.  
Waveform Comparison  
(30210, 230 V)  
®
Spectrum 625  
6900  
6900  
FUEL CONSUMPTION  
(30 A, 230 V, 1/2 in cut)  
(Kohler 23 HP Command OHV)  
To select a generator that has enough power output in watts, add the watts  
for the items you want to simultaneously run. Tools and appliances with  
induction motors may require 3–7 times the listed wattage when starting.  
All data listed is approximatecheck your tool/appliance for specific  
wattage requirements.  
2.00  
1-Phase  
Generator  
Power  
1.75  
1.50  
1.25  
1.00  
0.75  
0.50  
0.25  
0
DC WELD/  
3-Phase  
Generator  
Power  
3750 RPM  
Tools and motors are designed to operate within 10% of  
120/240/480 VAC. The Bobcat’s power generator provides strong  
power while keeping the voltage within 10% of 120/240/480 VAC.  
This increases tool/motor performance and life.  
IDLE 2200 RPM  
0
25  
50  
75 100 125 150 175 200 225 250  
WELD AMPS AT 100% DUTY CYCLE  
0
1.0 2.0 3.0 4.0 5.0 6.0 7.0 8.0 9.0 10.0  
POWER KVA AT 100% DUTY CYCLE  
Fuel Consumption Data  
12-gallon fuel capacity.  
On a typical job using 1/8-in 7018 electrodes (125 amps, 20% duty cycle)  
expect about 20 hours of operation.  
Welding at 150 amps at 40% duty cycle uses approximately 3/4 gallon  
per hourabout 16 hours of operation.  
Under a continuous load of 4000 watts of generator power, the Bobcat  
would run for about 14 hours.  
Mounting Specifications  
A. 20 in (508 mm)  
B. 16-1/2 in (419 mm)  
C. 1-3/4 in (44 mm)  
D. 6-1/16 in (154 mm)  
E. 32-3/4 in (832 mm)  
F. 45-3/8 in (1153 mm) (Gas)  
G. 13/32 in (10 mm) diameter  
Height: 33-1/2 in (851 mm)  
(to top of exhaust)  
Width: 20 in (508 mm)  
Depth: 45-7/8 in (1164 mm)  
G
4 Holes  
B
A
C
D
E
F
3
 
Genuine Miller Accessories  
(For additional options and accessories, see Bobcat Lit. Index No. ED/4.4.)  
Protective Covers  
All-Purpose  
Running Gear  
#300 396 Gas/LP  
Remote Oil Drain/  
Filter Kits (Kohler)  
#300 106 Field.  
Rear Mounted (shown)  
Oil can be drained from  
rear of machine.  
Heavy-duty, water-resistant and mildew-  
resistant covers protect and maintain the  
finish of the welder.  
#195 333  
Includes two heavy-duty  
15 in tires with inner  
tubes, two 8 in rubber  
For Gas models  
#300 236 Field. Front/Chassis Truck Mounted  
Oil can be drained from the front of the  
machine or below the truck, mounted on  
the chassis.  
Makes servicing easy when engine drive is  
mounted in tight spots.  
swivel casters and a heavy-duty handle.  
Recommended for all surfaces and  
applications, and is easy to move around  
the job site.  
without Protective  
Cage or Running  
Gear.  
#195 529  
For Gas models  
with Protective  
Cage and/or  
All-Terrain Running  
Gear #300 457  
Two heavy-duty 15 in  
and two 10 in pneumatic  
tires with inner tubes  
and a rugged handle  
#195 333 shown  
Order the following from Miller Service Parts.  
Running Gear.  
Full KVA Plug Kit  
#119 172 Field  
120/240 VAC, 50 amp plug  
(NEMA 14-50P) to fit full  
KVA receptacle.  
Protective Cage  
with Cable  
Holders  
#195 331  
Rugged cage with  
provide maximum maneuverability.  
Note: Cannot be used with Gas Cylinder Mounting  
Assembly or LP Tank Mounting Assembly.  
Full KVA 3-Phase Plug #165 963 Field  
480 VAC, 30 A plug (NEMA L16-30P)  
to fit 3-phase receptacle.  
LP Tank Mounting  
Assembly  
cable holders  
protects your investment. Can be used with  
running gear, Gas Cylinder Mounting  
Assembly, LP Tank Mounting Assembly,  
or with trailer.  
#195 329 LP  
Designed for use with  
All-Purpose Running  
Gear, Protective Cage,  
or by itself. Includes  
Engine Tune-Up Kits  
#230 015 Field. Kohler CH23 (Gas)  
#180 096 Field. Kohler CH20 (LP)  
and CH730 (LP)  
Tune-up kits include spark plugs  
(gas/LP models) and engine filters.  
bracket and clamp to mount 33 and 43 lb  
tanks horizontally, and hose with fittings to  
converter.  
Note: Cannot be used with Gas Cylinder  
Mounting Assembly.  
TIG Adapter with Extension #195 350 Field  
Extension with Power Cable Adapter  
45V11. Required for Scratch Start TIG  
welding with Bobcats.  
Ordering Information  
Power Source  
Stock No.  
Description  
Qty.  
Price  
Bobcat3 Phase  
(23 HP gas, 25 HP LP Kohler)  
#907 255  
Base machine, CC/CV, AC/DC, 11,000 Watts  
#907 255-01-1 With LP Gas  
Accessories  
Remote Oil Drain and Filter Kit  
#300 106  
#300 236  
#119 172  
#165 963  
#230 015  
#180 096  
Field. 28-Inch Kit. Kohler engine only  
Field. 52-Inch Kit. Kohler engine only  
Field. (Order from Miller Service Parts)  
Field. (Order from Miller Service Parts)  
Full KVA Plug  
Full KVA 3-PhasePlug  
Engine Tune-Up Kits  
Field. For Kohler CH23 (Gas). (Order from Miller Service Parts)  
Field. For Kohler CH20 (LP) and CH730 (LP). (Order from Miller Service Parts)  
TIG Adapter with Extension  
Protective Cover  
#195 350  
#195 333  
#195 529  
Field. Required for Scratch Start TIG welding with Bobcats. (Order from Miller Service Parts)  
Gas models. Blue w/logo. Not for use with protective cage or running gear  
Gas models. Blue w/logo. For use with protective cage and/or running gear  
Protective Cage with Cable Holders #195 331  
All-Purpose Running Gear  
All-Terrain Running Gear  
LP Tank Mounting Assembly  
#300 396  
#300 457  
#195 329  
LP models. Cannot be used with Gas Cylinder Mounting Assembly  
Date:  
Total Quoted Price:  
Distributed by:  
Litho in USA  
 

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