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WELDING can cause fire or explosion.

Welding on closed containers, such as tanks, drums,
or pipes, can cause them to blow up. Sparks can fly off
from the welding arc. The flying sparks, hot
workpiece, and hot equipment can cause fires and
burns. Accidental contact of electrode to metal
objects can cause sparks, explosion, overheating, or
fire. Check and be sure the area is safe before doing
any welding.

1. Protect yourself and others from flying sparks and hot metal.
2. Do not weld where flying sparks can strike flammable material.
3. Remove all flammables within 35 ft (10.7 m) of the welding arc. If

this is not possible, tightly cover them with approved covers.

4. Be alert that welding sparks and hot materials from welding can

easily go through small cracks and openings to adjacent areas.

5. Watch for fire, and keep a fire extinguisher nearby.

6. Be aware that welding on a ceiling, floor, bulkhead, or partition

can cause fire on the hidden side.

7. Do not weld on closed containers such as tanks, drums, or pipes,

unless they are properly prepared according to AWS F4.1 (see
Safety Standards).

8. Connect work cable to the work as close to the welding area as

practical to prevent welding current from traveling long, possibly
unknown paths and causing electric shock and fire hazards.

9. Do not use welder to thaw frozen pipes.

10. Remove stick electrode from holder or cut off welding wire at

contact tip when not in use.

11. Wear oil-free protective garments such as leather gloves, heavy

shirt, cuffless trousers, high shoes, and a cap.

12. Remove any combustibles, such as a butane lighter or matches,

from your person before doing any welding.

WARNING

ENGINES can be hazardous.

ENGINE EXHAUST GASES can kill.

Engines produce harmful exhaust gases.

1. Use equipment outside in open, well-ventilated areas.

2. If used in a closed area, vent engine exhaust outside and away

from any building air intakes.

ENGINE FUEL can cause fire or
explosion.

Engine fuel is highly flammable.

1. Stop engine and let it cool off before checking or adding fuel.
2. Do not add fuel while smoking or if unit is near any sparks or

open flames.

3. Do not overfill tank – allow room for fuel to expand.
4. Do not spill fuel. If fuel is spilled, clean up before starting

engine.

MOVING PARTS can cause injury.

Moving parts, such as fans, rotors, and belts can cut
fingers and hands and catch loose clothing.

1. Keep all doors, panels, covers, and guards closed and

securely in place.

2. Stop engine before installing or connecting unit.

3. Have only qualified people remove guards or covers for

maintenance and troubleshooting as necessary.

4. To prevent accidental starting during servicing, disconnect

negative (–) battery cable from battery.

5. Keep hands, hair, loose clothing, and tools away from moving

parts.

6. Reinstall panels or guards and close doors when servicing is

finished and before starting engine.

SPARKS can cause BATTERY
GASES TO EXPLODE; BATTERY
ACID can burn eyes and skin.

Batteries contain acid and generate explosive
gases.

1. Always wear a face shield when working on a battery.

2. Stop engine before disconnecting or connecting battery

cables.

3. Do not allow tools to cause sparks when working on a battery.

4. Do not use welder to charge batteries or jump start vehicles.

5. Observe correct polarity (+ and –) on batteries.

STEAM AND PRESSURIZED HOT
COOLANT can burn face, eyes, and
skin.

It is best to check coolant level when engine is cold
to avoid scalding.

1. If the engine is warm and checking is needed, follow steps 2

and 3.

2. Wear safety glasses and gloves and put a rag over cap.
3. Turn cap slightly and let pressure escape slowly before

completely removing cap.

PRINCIPAL SAFETY STANDARDS

Safety in Welding and Cutting, ANSI Standard Z49.1, from American
Welding Society, 550 N.W. LeJeune Rd, Miami FL 33126

Safety and Health Standards, OSHA 29 CFR 1910, from Superinten-
dent of Documents, U.S. Government Printing Office, Washington, D.C.
20402.

Recommended Safe Practices for the Preparation for Welding and Cut-
ting of Containers That Have Held Hazardous Substances
, American
Welding Society Standard AWS F4.1, from American Welding Society,
550 N.W. LeJeune Rd, Miami, FL 33126

National Electrical Code, NFPA Standard 70, from National Fire Protec-
tion Association, Batterymarch Park, Quincy, MA 02269.

Safe Handling of Compressed Gases in Cylinders, CGA Pamphlet P-1,
from Compressed Gas Association, 1235 Jefferson Davis Highway,
Suite 501, Arlington, VA 22202.

Code for Safety in Welding and Cutting, CSA Standard W117.2, from
Canadian Standards Association, Standards Sales, 178 Rexdale Bou-
levard, Rexdale, Ontario, Canada M9W 1R3.

Safe Practices For Occupation And Educational Eye And Face Protec-
tion
, ANSI Standard Z87.1, from American National Standards Institute,
1430 Broadway, New York, NY 10018.

Cutting And Welding Processes, NFPA Standard 51B, from National
Fire Protection Association, Batterymarch Park, Quincy, MA 02269.

Summary of Contents for MOG-200C

Page 1: ...to the operator For help call your distributor or MILLER Electric Mfg Co P O Box 1079 Appleton WI 54912 414 734 9821 OWNER S MANUAL OM 805 079 869D May 1994 Multiple Operator Resistance Grids MOG For...

Page 2: ...alue established in 1929 This Owner s Manual is designed to help you get the most out of your Miller products Please take time to read the Safety precautions They will help you protect yourself agains...

Page 3: ...ce intense visible and invisible ultraviolet and infrared rays that can burn eyes and skin Noise from some processes can damage hearing Chipping grinding and welds cooling throw off pieces of metal or...

Page 4: ...nds and catch loose clothing 1 Keep all doors panels covers and guards closed and securely in place 2 Stop engine before installing or connecting unit 3 Have only qualified people remove guards or cov...

Page 5: ...To reduce magnetic fields in the workplace use the following procedures 1 Keep cables close together by twisting or taping them 2 Arrange cables to one side and away from the operator 3 Do not coil or...

Page 6: ......

Page 7: ...can injure Keep away from moving parts Keep all panels and covers closed when operating 3 Turn Off switch when using high frequency Figure 1 1 Safety Information SECTION 2 SPECIFICATIONS Table 2 1 Re...

Page 8: ...o unit Do not block or filter airflow Warranty is void if any type of filter is used FUMES can be hazardous LACK OF FRESH AIR AND PROPER VENTILATION can be harmful Do not breathe welding fumes Place u...

Page 9: ...hole size for connecting to common work electrode hold er s and weld output terminals if applicable 5 Common Work Connection Connect work cable to common work according to codes 6 Insulated Electrode...

Page 10: ...ure by tapping pin into place Tools Needed 7 32 in 1 1 in 2 4 26 mm 3 5 6 Figure 3 4 Female Camlok Connector Assembly sb6 4 11 92 ST 155 015 1 Weld Output Cable Strip insulation as shown 2 Copper Stri...

Page 11: ...flammable material Watch for fire keep extinguisher nearby Do not locate unit over combustible surfaces Do not weld on closed containers Allow work and equipment to cool before handling ARC RAYS can...

Page 12: ...T VOLTS exists between electrode holders of opposite polarity Do not touch live electrical parts Do not touch electrode holders of opposite polarity at the same time Separate electrode holders of oppo...

Page 13: ...ne Amperage Control Use control to add amperage in 5 ampere steps to weld output In Example Total Amperage Output 122 5 A 100 A 20 A 2 5 A 2 3 1 Figure 4 5 Amperage Controls Begin Welding ssb7 1 9 92...

Page 14: ...severe burns Allow cooling period before maintaining or servicing Maintenance to be performed only by qualified persons swarn8 1 2 93 5 1 Routine Maintenance Turn Off all power before maintaining Ref...

Page 15: ...ation 5 3 Troubleshooting WARNING ELECTRIC SHOCK can kill Do not touch live electrical parts Turn Off welding power source and disconnect input power before inspecting maintaining or servicing HOT PAR...

Page 16: ...OM 805 Page 10 SECTION 6 ELECTRICAL DIAGRAMS SA 162 468 Figure 6 1 Circuit Diagram For Models Without Polarity Switch SA 047 615 C Figure 6 2 Circuit Diagram For Models With Polarity Switch...

Page 17: ...OM 805 Page 11 NOTES...

Page 18: ...RTS LIST 2 3 4 5 6 7 8 9 10 11 1 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 SD 080 149 D Figure 7 1 Complete Assembly MOG 2...

Page 19: ...e 1 17 059 764 HANDLE carrying 4 4 18 010 853 FASTENER scr sltd hd No 2 1 1 19 010 855 RETAINER screw No 2 1 1 20 010 854 NUT speed No 2 clip on 1 1 21 059 780 PANEL rear 1 21 110 705 PANEL rear 1 22...

Page 20: ...ITCH tgl SPDT 15A 125VAC 1 1 49 059 933 WASHER flat mica 750 ID x 1 500 OD x 030thk 2 2 50 R7 059 932 RESISTOR WW fxd 175W 20 ohm 1 1 51 057 430 WASHER ctrg spcl No 18 1 1 52 081 016 BRACKET mtg resis...

Page 21: ...OM 805 Page 15 Notes...

Page 22: ...OM 805 Page 16 Notes...

Page 23: ...ting Torches Remote Controls Accessory Kits Replacement Parts No labor Spoolmate 185 Spoolmate 250 Canvas Covers Miller s True Blue Limited Warranty shall not apply to 1 Consumable components such as...

Page 24: ...complete and retain with your personal records Always provide Model Name and Serial Style Number Call 1 800 4 A Miller or see our website at www MillerWelds com to locate a DISTRIBUTOR or SERVICE AGEN...

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