Forney Easy Weld 20 P Manuel D'utilisation page 8

SIGNIFICANT DC VOLTAGE EXISTS ON INTERNAL PARTS OF INVERTER-BASED
MACHINES AFTER THE REMOVAL OF INPUT POWER.
Before touching anything inside the cabinet or performing maintenance activities, turn unit OFF, disconnect INPUT
POWER CABLE, and allow sufficient time for the capacitors to discharge (check with a volt meter that there are zero
volts (0V) across the capacitor terminals).
EXPLODING PARTS CAN INJURE.
On inverter-based machines, faulty parts can explode or cause other parts to explode when power is applied.
Always wear a face shield and long sleeves when servicing inverters.
FLYING SPARKS CAN CAUSE INJURY.
• Wear approved face shield or safety goggles with side shields.
• Wear proper body protection to protect skin. Wear flame-resistant ear plugs or ear muffs to prevent sparks
from entering ears.
ARC RAYS CAN BURN EYES AND SKIN.
Arc rays from the cutting process produce intense visible and invisible (ultraviolet and infrared) rays that can burn
eyes and skin.
• Wear face protection (helmet or shield) with correct filter shade to protect your face and eyes when cutting or
watching.
• Wear approved safety glasses with side shields under your helmet or shield.
• Use protective screens or barriers to protect others from flash and glare; warn others not to watch the arc.
• Refer to ANSI Z49.1 for OSHA 29CFR for shade recommendations.
NOISE CAN DAMAGE HEARING.
Noise can cause permanent hearing loss. The plasma cutting processes can cause noise levels that exceed safe
limits. You must protect your ears from loud noise to prevent permanent loss of hearing.
• To protect your hearing from loud noise, wear protective ear plugs and/or ear muffs.
• Noise levels should be measured to be sure the decibels (sound) do not exceed safe levels.
FUMES, GASSES, AND VAPORS CAN CAUSE DISCOMFORT, ILLNESS, AND
DEATH!
To reduce the risk, read, understand, and follow the safety instructions. In addition, make certain that
anyone else that uses this welding equipment or is a bystander in the work area, understands and follows these
safety instructions as well.
• Read and understand manufacturers SDS and MSDS.
• Do not weld or cut in an area until it is checked for adequate ventilation as described in ANSI standard
Z49.1. If ventilation is not adequate to exchange all fumes and gasses generated during the welding or cutting
process with fresh air, do not weld or cut unless you (the operator) and all bystanders are wearing air-supplied
respirators.
• Do not heat metals coated with, or that contain, materials that produce toxic fumes (such as galvanized steel),
unless the coating is removed. Make certain the area is well ventilated, and the operator and all bystanders are
wearing air-supplied respirators.
• Do not weld, cut or heat lead, zinc, cadmium, mercury, beryllium, antimony, cobalt, manganese, selenium,
arsenic, copper, silver, barium, chromium, vanadium, nickel, or similar metals without seeking professional
advice and inspection of the ventilation of the work area. These metals produce extremely toxic fumes which
can cause discomfort, illness and death.
• Do not weld or cut in areas that are near chlorinated solvents. Vapors from chlorinated hydrocarbons, such
as trichloroethylene and perchloroethylene, can be decomposed by the heat of an electric arc or its ultraviolet
radiation. These actions can cause phosgene, a highly toxic gas, to form, along with other lung and eye-
irritating gasses. Do not weld or cut where these solvent vapors can be drawn into the work area or where the
ultraviolet radiation can penetrate to areas containing even very small amounts of these vapors.
• Do not weld or cut in a confined area unless it is being ventilated or the operator (and anyone else in the area)
is wearing an air-supplied respirator.
• Stop welding or cutting if you develop momentary eye, nose, or throat irritation as this indicates inadequate
ventilation. Stop work and take necessary steps to improve ventilation in the work area. Do not resume work if
physical discomfort persists.
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