Operation manual [PDF] (65 pages)
- Updated: 28.07.2026
Document Preview & Text Transcription
Part No. 729-110-040 Rev. 1.41 | June 2016
© 2016 Nelson Stud Welding, Inc. All Rights Reserved.
OPERATING THE
DOMESTIC & EXPORT
Operations Manual
For Software Version 1.03
These instructions are for experienced operators. If you are not fully
familiar with the principles of operation and safe practices for arc welding
equipment, we urge you to read AWS SP -“Safe Practices” available from the
American Welding Society. Do not permit untrained persons to install,
operate or maintain this equipment. Do not attempt to install or
operate this equipment until you have read and fully understand
these instructions. If you do not fully understand these instructions, contact
your supplier for further information. Be sure to read the Safety section before
utilizing this equipment.
Part No. 729-110-040 Rev. 1.41 | June 2016
© 2016 Nelson Stud Welding, Inc. All Rights Reserved.
N550c Arc Charger™ Limited Warranty
NELSON’S only warranty is that goods being sold will be free from defects in workmanship and
material. This warranty is expressly in lieu of other warranties, expressed or implied and
whether statutory or otherwise, including any implied warranty of merchantability or fitness for a
particular purpose.
NELSON’S liability for breach of warranty shall arise only upon return of the defective goods at
Buyer’s expense after notice to NELSON of the claimed breach, and shall be limited to
furnishing a like quantity of such goods free from such defects or, at NELSON’S option, to
refunding the purchase price (less reasonable depreciation based on actual use); provided,
however, that NELSON will not accept receipt of equipment returned unless buyer has
previously afforded NELSON’S personnel a reasonable opportunity to inspect and repair said
equipment at buyer’s facility or such other location as is mutually agreeable. Notice to NELSON
must be given within 30 days of such defect or failure and within one year or 500,000
welds from the date the equipment was delivered, whichever comes first. No compensation or
reimbursement for transportation costs of any kind will be allowed.
Please note that this warranty does not extend beyond the original registered purchaser,
and does not warrant equipment that has been modified by any party other than NELSON, or
equipment that has been improperly installed, improperly operated, or misused based upon
industry standards, or equipment which has not had reasonable and necessary maintenance, or
equipment which has been used for operation outside of specifications for the equipment.
NELSON shall never be liable for consequential damages.
NELSON reserves the right to make engineering and/or part changes, at any time without
notice, as a result of our commitment to continuous improvement.
MODEL NO.
SERIAL NO.
SHIPPING DATE
VOLTAGE REQUIRED
Part No. 729-110-040 Rev. 1.41 | June 2016
© 2016 Nelson Stud Welding, Inc. All Rights Reserved.
WARNING
The following Safety section is
for your protection. It
summarizes precautionary
information from the references
listed in the Additional Safety Information section. Before performing
any installation or operating procedures, be sure to read and follow the
safety precautions listed below as well as all other manuals, material
safety data sheets, labels, etc. Failure to observe these precautions can
result in injury or death.
ELECTRICAL SHOCK
Contact with live electrical parts and ground can cause
severe injury or death. DO NOT use welding current in
damp areas, if movement is confined, or if there is
danger of falling. Faulty or improperly electrified
equipment can cause injury or death. Therefore:
1.
Always have qualified personnel perform the installation, troubleshooting,
and maintenance unless you are qualified to perform such work.
2.
Install equipment in accordance with the U.S. National Electrical Code, all
local codes and the manufacturer’s recommendations.
3.
Be sure the power source frame (chassis) is connected to the ground
system of the input power.
4.
Connect the workpiece to a good electrical ground.
5.
Connect the work cable to the workpiece. A poor or missing connection can
expose you or others to a fatal shock.
6.
Use well-maintained equipment. Replace worn or damaged cables.
7.
Keep everything dry, including clothing, work area, cables, torch/electrode
holder and power source.
8.
Make sure that all parts of your body are insulated from work and from the
ground.
9.
Do not stand directly on metal or the earth while working in tight quarters or
a damp area; stand on dry boards or an insulating platform and wear
rubber soled shoes.
10. Put on dry, hole-free gloves before turning on the power.
11. Refer to ANSI/ASC Standard Z49.1 for specific grounding
recommendations. Do not mistake the work lead for a ground cable.
12. Before performing any work inside a power source, disconnect the power
source from the incoming electrical power using the disconnect switch at
the fuse box before working on the equipment.
PROTECT YOURSELF AND OTHERS
Some welding, cutting, and gouging processes are
noisy and require ear protection. The arc, like the
sun, emits ultraviolet (UV) rays and other radiation
which can harm the skin and eyes. Hot metal can
cause burns. Training in the proper use of the
processes and equipment is essential to prevent
accidents. Therefore:
1.
Always wear safety glasses with side shields in any work area, even if
welding helmets, face shields and goggles are also required.
2.
Use a face shield fitted with filter shade #3 per ANSI Z87.1. Cover
sparks and rays of the arc when operating or observing operations.
Warn bystanders not to watch the arc and not to expose themselves
to the rays of the electric-arc or hot metal.
3.
Wear flameproof gauntlet type gloves, heavy long-sleeve shirt,
cuffless trousers, high topped shoes, and a welding helmet or cap for
hair protection, to protect against arc rays and hot sparks or hot metal.
A flameproof apron may also be desirable as protection against
radiated heat and sparks.
4.
Hot sparks or metal can lodge in rolled up sleeves, trousers cuffs or
pockets. Sleeves and collars should be kept buttoned and open
pockets eliminated from the front of clothing.
5.
Protect other personnel from arc rays and hot sparks with suitable
nonflammable partitions or curtains.
6.
Use goggles over safety glasses when chipping slag or grinding.
Chipped slag may be hot and can fly far. Bystanders should also wear
goggles over safety glasses.
ELECTRICAL AND MAGNETIC FIELDS
Electric and magnetic fields may be dangerous. Electric
current flowing through any conductor causes localized
Electric and Magnetic Fields (EMF). Welding and cutting
current creates EMF around welding cables and welding
machines. Therefore:
1.
Operators having pacemakers should consult their physician before
welding. EMF may interfere with some pacemakers.
2.
Exposure to EMF may have other health effects which are unknown.
3.
Operators should use the following procedures to minimize exposure to
EMF:
4.
Route the electrode and work cables together. Secure them with tape when
possible.
5.
Never coil the torch or work cable around your body.
6.
Do not place your body between the torch and work cables. Route cables
on the same side of your body.
7.
Connect the work cable to the workpiece as close as possible to the area
being welded.
8.
Keep welding power source and cables as far away from your body as
possible.
FIRES AND EXPLOSIONS
Heat from flames and arcs can start fires. Hot
slag or sparks can also cause fires and
explosions. Therefore:
1.
Remove all combustible materials well away from the work area or
cover the materials with a protective nonflammable covering.
Combustible materials include wood, cloth, sawdust, liquid and gas
fuels, solvents, paints and coatings, paper, etc.
2.
Hot sparks or hot metal can fall through cracks or crevices in floors or
wall openings and cause a hidden smoldering fire or fires on the floor
below. Make certain that such openings are protected from hot sparks
and metal.
3.
Do not weld, cut, or perform other hot work until the workpiece has
been completely cleaned so that there are no substances on the
workpiece which might produce flammable or toxic vapors. Do not do
hot work on closed containers. They may explode.
4.
Have appropriate fire extinguishing equipment handy for instant use,
such as a garden hose, water pail, sand bucket or portable fire
extinguisher. Be sure you are trained for proper use.
5.
Do not use equipment beyond its ratings. For example, overloaded
welding cable can overheat and create a fire hazard.
6.
After completing operations, inspect the work area to make certain
there are no hot sparks or hot metal which could cause a later fire.
Use fire watchers when necessary.
7.
For additional information, refer to NFPA Standard 51B, “Fire
Prevention in Use of Cutting and Welding Processes,” available from
the National Fire Protection Association, Batterymarch Park, Quincy,
MA 02269
MOVING PARTS CAN CAUSE INJURY
Electric fan can start at any time without warning and
cause severe injury, therefore:
1.
Always disconnect electrical power prior to service to prevent the fan from
starting unexpectedly.
2.
Keep all doors, panels, covers, and guards closed and securely in place.
3.
Have only qualified people remove guards or covers for maintenance and
troubleshooting as necessary.
4.
Keep hands, hair, loose clothing, and tools away from moving parts.
5.
Reinstall panels or guards and close doors when servicing is finished and
before reenergizing welder.
Pages Preview: