GWH4 datasheet(8/48 Pages) CLARKE

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DO NOT overload arc welding equipment. It may overheat cables and cause a fire.

Loose cable connections may overheat or flash and cause a fire. NEVER strike an arc

on a cylinder or other pressure vessel. It creates a brittle area that can cause a violent

rupture or lead to such a rupture later under rough handling.

ELECTRIC ARC WELDING (MMA)

Comply with all precautions in the above and this section. Arc welding, properly done,

is a safe process but a careless operator invites trouble. The equipment carries high

currents at significant voltages. The arc is very bright and hot. Sparks fly, fumes rise,

ultraviolet and infrared energy radiates and work pieces are hot. The wise operator

avoids unnecessary risks and protects himself and others from accidents.

BURN PROTECTION

The welding arc is intense and visibly bright. It’s radiation can damage eyes,

penetrate lightweight clothing, reflect from light coloured surfaces and burn the skin

and eyes. Skin burns resemble acute sunburn, those from gas - shielded arcs are

more severe and painful.

PROTECTIVE CLOTHING (PPE) MUST BE WORN

Wear long sleeved clothing (particularly for gas shielded arc) in addition to gloves,

apron and strong shoes. As necessary, use additional protective clothing such as

leather jacket or sleeves, flame-proof apron, and fire-resistant leggings. Avoid outer

garments of untreated cotton. Bare skin protection: Wear dark substantial clothing,

Button collars closed to protect the chest and neck and button any pockets to prevent

entry of sparks.

EYE AND HEAD PROTECTION

Protect your eyes from exposure to the arc. NEVER look at an electric arc without

protection. A welding helmet or shield containing an appropriate filter plate must be

placed over the face before striking an arc. Protect the filter plate with a clear cover

plate. A cracked or broken helmet or shield should NOT be worn; radiation can pass

through to cause burns.

Cracked, broken, or loose filter plates must be replaced IMMEDIATELY. Replace a

clear cover plate when broken, pitted, or spattered. WE SUGGEST you wear flash

goggles with side shields under the helmet, to give some protection to the eyes

should the helmet not be lowered over the face before an arc is struck. Looking at an

arc momentarily with unprotected eyes (particularly high intensity gas-shielded arc)

can cause a retinal burn that may leave a permanent dark area in the field of vision.

Before welding whilst wearing contact lenses, seek advice from your optician.

PROTECTION OF NEARBY PERSONNEL

For production welding, a separate, well vented room or enclosed bay is best. In open

areas, surround the operation with low reflective, non- combustible screens or panels.

Allow for free air circulation, particularly at floor level. Provide face shields for all

GWH4 Datasheet(PDF) 8 Page - Clarke International