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OM-249 818 Page 8

1. Secure cylinder in upright position.

2. Inspect the cylinder valve for grease, oil, debris, or damaged threads.

3. Confirm the regulator has the correct pressure rating and gas service

connection for the cylinder being used.

4. Inspect the regulator inlet connection for grease, oil, and/or damaged

parts.

5. Attach regulators to proper cylinders. Use a wrench to ensure tight con-

nections.

.

When using a flowmeter-style regulator, position the regulator vertically
to ensure accurate readings.

6. Turn regulator adjusting handle or screw counterclockwise to release

pressure on the adjusting spring. Close shut-off valve on flowmeter reg-

ulator.

NOTICE 

 Release pressure on the adjusting spring before opening the cyl-

inder valve or the diaphragm may be damaged and the regulator may not

operate.

7. Stand with the cylinder valve between you and the regulator. Slowly

open the cylinder valve 1/4 turn until the tank pressure stabilizes,  then

fully open the valve to seat it in the open position. Check compressed

gas system for leaks with an approved leak detection solution or leak

detector.

.

Gas cylinders have double-seated valves. Open valve fully to prevent
gas from leaking around the valve stem during use.

8. Attach hose to regulator and secure with clamp.

9. Purge hose in a well ventilated area.

S

Turn regulator adjusting handle clockwise to allow 5 psig (34 kPa) to

pass through the hose.

S

Allow gas to flow about ten seconds to purge the hose.

S

Turn regulator adjusting handle counterclockwise to stop gas flow.

10. Attach required equipment to hose and use a wrench to tighten

connections.

11. Using adjustment handle, adjust regulator delivery pressure or flow rate

as required for your application.

8. Set-Up And Operation Instructions

Summary of Contents for GMAW

Page 1: ...Single And Two Stage Regulators For Gas Metal Arc Welding GMAW OM 249 818C 2011 07 ...

Page 2: ......

Page 3: ...t related to personal injury 3 Arc Welding Hazards This group of symbols means Warning Watch Out ELECTRIC SHOCK MOVING PARTS and HOT PARTS hazards Consult symbols and related instructions below for necessary actions to avoid the hazards The symbols shown below are used throughout this manual to call attention to and identify possible hazards When you see the sym bol watch out and follow the relate...

Page 4: ...is poor wear an approved air supplied respirator D Read and understand the Material Safety Data Sheets MSDSs and the manufacturer s instructions for metals consumables coatings clean ers and degreasers D Work in a confined space only if it is well ventilated or while wearing an air supplied respirator Always have a trained watchperson nearby Welding fumes and gases can displace air and lower the o...

Page 5: ...Do not weld on closed containers such as tanks drums or pipes unless they are properly prepared according to AWS F4 1 see Safety Stan dards D Do not weld where the atmosphere may contain flammable dust gas or liquid vapors such as gasoline D 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 ele...

Page 6: ...a welding electrode to touch any cylinder D Never weld on a pressurized cylinder explosion will result D Use only correct compressed gas cylinders regulators hoses and fit tings designed for the specific application maintain them and asso ciated parts in good condition D Turn face away from valve outlet when opening cylinder valve D Keep protective cap in place over valve except when cylinder is i...

Page 7: ...he fitting does not slip inside the hose Be sure all connections are tight Check compressed gas system for leaks with an approved leak detection solution or leak detector Do not lubricate regulator gauges or compressed gas fittings Stop using the regulator immediately and contact the gas suppli er if oil or grease is found in these components Take regulator and other components to a qualified repa...

Page 8: ...nternational org Safe Practice For Occupational And Educational Eye And Face Protection ANSI Standard Z87 1 from American National Standards Institute 25 West 43rd Street New York NY 10036 phone 212 642 4900 website www ansi org Standard for Fire Prevention During Welding Cutting and Other Hot Work NFPA Standard 51B from National Fire Protection Association Quincy MA 02269 phone 1 800 344 3555 web...

Page 9: ... This product contains chemicals including lead known to the state of California to cause cancer birth defects or other repro ductive harm Wash hands after use 6 California Proposition 65 Warnings 7 Specifications Application Gas Metal Arc Welding GMAW Welding Gas Argon or Argon CO2 Mix Max Inlet Pressure 3000 PSI 20 7 mPa Gas Flow 10 50 CFH 283 1416 LH Cylinder Fitting CGA 580 Gas Hose Fitting 3 ...

Page 10: ...d the regulator may not operate 7 Stand with the cylinder valve between you and the regulator Slowly open the cylinder valve 1 4 turn until the tank pressure stabilizes then fully open the valve to seat it in the open position Check compressed gas system for leaks with an approved leak detection solution or leak detector Gas cylinders have double seated valves Open valve fully to prevent gas from ...

Page 11: ...e regulator to ensure the cylinder valve has been completely closed 6 If necessary remove regulator from cylinder Reinstall cap on cyl inder 9 When Finished Using The Regulator Hobart cutting and welding equipment will have a long service life when properly installed operated and maintained The working conditions and servicing each individual gives this equipment will also impact the service life ...

Page 12: ...ebook Inc Hobart Welding Products 1635 West Spencer Street Appleton WI 54914 USA Phone 800 332 3281 Warranty Service or 800 626 9420 Product Information www hobartwelders com ORIGINAL INSTRUCTIONS PRINTED IN USA E 2011 Hobart Welding Products ...

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