Miller PipeWorx 400 Troubleshooting Guide download pdf (Page 2)

1. Where compressed gases are to be used at the job site, special precautions

should be used to prevent hazardous situations.

2. Always secure cylinders in an upright position to a fixed support so that they can-

not be knocked over. Valve protection caps should always be in place except when

cylinder is in use.

3. Locate cylinders clear of areas where they may be struck and safe distance from

welding or any other source of heat, sparks, or flame.

4. Cylinders must be handled carefully to prevent damage to their walls, valves, or

safety devices. Never lift cylinders by valves or caps.

5. Keep your head and face away from cylinder valve outlet regulator when opening

cylinder valves.

6 All regulators, hoses, fittings, etc. should be properly maintained and in good

condition as per the manufacturer’s recommendations. Faulty equipment should be

replaced immediately.

7. Never strike an arc on a cylinder or allow any other electrically ‘live’ parts to come

in contact with a cylinder. This can cause a violent rupture or lead to a rupture dur-

ing

handling.

1. The welding area.

1.1 Remove all fire hazards from the weld area. If this is not possible, move

work to a hazard-free area or cover all combustibles with a fire-resistant

cover. Bear in mind that hot material and sparks from the welding process

easily go through small cracks and openings into adjacent areas.

1.2 Do not weld in areas which have a flammable atmosphere containing

explosive gases or vapors. Avoid paint booths, solvent cleaning tanks,

ventilators, and storage areas which contain grain or wood dust.

1.3 After welding, turn off all equipment or place gun in a safe location in

which no part of the electrode circuit is contacting the workpiece or

ground. Accidental engagement could create a fire hazard.

1.4 Keep all equipment clean, free of oil and grease.

1.5 Keep the appropriate fire extinguishing equipment in weld area.

1.6 A fire watcher must be present with the appropriate fire extinguishing

equipment and until the area is deemed safe after welding if the following

conditions exist:

1.6.1 Combustibles are within the weld area.

1.6.2 Combustibles which can be ignited by sparks are near the weld

area.

1.6.3 Openings in the floors, dividers, and walls may expose combus-

tibles to weld sparks.

1.6.4 Combustibles are adjacent to floors, dividers, or walls that could

be ignited by radiant or conductive heat.

1.7 After welding has been completed make sure the area is free of glowing

embers, sparks, and any flames.

2. Equipment.

2.1 See ‘CYLINDERS MAY EXPLODE’ section, #2 and #3.

2.2 Periodically check all shielding gas line connections for leaks. Also check

the condition of all hoses.

2.3 Keep all protective clothing free of oil and grease.

2.4 Flammable hair preparations should not be used.

2.5 When working with gas-powered equipment, these precautions should be

followed:

2.5.1 Turn off engine and allow to cool before refueling.

2.5.2 Carefully refuel equipment to prevent spillage. Wipe up all spilled

fuel and do not restart engine until fumes have been eliminated.

2.5.3 Never add fuel near an open flame, when engine is running, or

while arc welding.

2.5.4 Do not overfill fuel tank, heat may expand the fuel causing it to

overflow and ignite.

1. Arc welding equipment uses electric energy to create molten bonded metal. Protect

yourself and others from possible electric shock/electrocution with proper training

and review of safety manuals.

2. Equipment improperly used can cause fatalities.

2.1 Turn off any electrically powered equipment and powered support equip-

ment when not in use. Accidental grounding or activation of equipment can

cause circuit completion, electric shock, arc flash, fires, and burns.

2.2 Electrode, gun components, and work surfaces are electrical conductors.

These surfaces are ‘live’ when system is in use.

2.2.1 Typically ‘stick’ equipment is ‘live’ when equipment is on. Although

modern MIG welding equipment disconnects power from the

electrode when not in use, the potential for accidental triggering

occurs. Treat all equipment with safety in mind.

2.3 Check for proper termination.

2.3.1 Check for proper grounding and attachments.

2.3.2 Check for proper service termination of input to National Electrical

Codes and local codes with trained and certified electricians.

2.3.3 Keep welding ground as close to workpiece as possible.

2.3.4 Inspect gun, holders, cords, clamps, terminators, and cables for

frayed wires, defects, and abrasion leading to short circuit condi-

tions or current capacity reductions.

2.3.5 Use proper ‘sized’ guns, cables, and connections for current being

carried. Use of equipment with duty cycle less than expected can

lead to premature component degradation and short circuiting.

2.3.6 Never touch two or more electrically ‘live’ parts together includ-

ing guns and holders. This compounds open circuit voltage and

provides feedback circuits with potential of electrical shock.

2.3.7 Isolate components in automated equipment if possible. Place warning

labels on electrically ‘live’ parts where isolation is not possible.

3. Wear proper safety equipment and clothing.

3.1 Wear proper safety glasses or eye protection should arcing occur.

4. Disconnect power when making any service connections of equipment. ‘Lock Out,

Tag Out’ all circuits and feeds.

5. Falls can be dangerous.

5.1 Keep work area clear as not to trip or fall into open circuits, causing shock.

5.2 When working at levels above ground, protect yourself from shock-causing

alls.

1. Never dip electrode in water for cooling.

2. Do not stand in water or on damp floors while welding, or do not weld in the rain.

Avoid wearing wet or sweaty clothes as they provide an easier electric current path

to you.

3. Always insulate yourself from the work and ground by wearing proper safety

equipment and clothing.

3.1 Isolate yourself from all moist conditions with dry hole-free clothing,

gloves, and rubber-soled (nonconductive) shoes. Use a nonconductive

platform to isolate yourself from conductors, water, and dampness.

3.2 When welding in damp locations and in awkward positions, such as sitting

or lying, make certain insulating material is large enough to cover your full

area of physical contact with work and ground.

3.3 Fix water leaks prior to welding, or immediately stop should they occur,

and provide proper repair.

4. Keep everything dry including clothing, work area, cables, electrode holder, and

power supply.

5. Never handle ‘live’ electrical or welding equipment with bare hands while standing

in water or while hands and/or feet are wet. Dangerous electric shock can re

sult.

SAFETY PRECAUTIONS

ELECTRIC SHOCK

CAN KILL

ELECTRICITY AND

WATER DON'T MIX

Some probability of

death or serious injury

Some probability of

death or serious injury

Some probability of

death or serious injury

CYLINDERS MAY

EXPLODE

Some probability of

death or serious injury

FIRE

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Miller PipeWorx 400 Troubleshooting Guide Page 2

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