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Инструкция по эксплуатации Страница: 4

Hitachi EW2800 Инструкция по эксплуатации онлайн [4/44] 76164

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placed when incandescent spatters and de-

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with coated plates that emit toxic fumes when

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- Welding should be done in a closed area

that does not open onto other working areas,

in order to protect all workers against radia-

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provided, the welding area must be delimi-

ted by protective screens painted in opaque

black large enough to restrain the visibility of

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- Remove all chlorinated solvents from the

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nated solvents decompose when exposed to

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- Never, under any circumstances, look at

an electric arc without suitable eye protection

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- Always wear protective goggles with tran-

sparent lenses to prevent splinters or other

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- Adequate local exhaust ventilation must

     '   

through a mobile hood or through a built-

in system on the workbench that provides

exhaust ventilation from the sides, the front

and below, but not from above the bench so

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exhaust ventilation must be provided toge-

ther with adequate general ventilation and

air circulation, particularly when work is done

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stain or soreness to the eyes, the nose or the

throat may be cause by inadequate ventila-

tion; work must be stopped immediately and

all necessary steps must be taken to provide

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- Welding process must be performed on

metal coatings thoroughly cleaned from la-

yers of rust or paint, to avoid production of

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- Do not weld metal or painted metal con-

taining zinc, lead, cadmium or beryllium un-

less the operator, or anyone else subjected to

the fumes, is wearing respiratory equipment

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welding area This pane can be frequently re placed when incandescent spatters and de posits greatly reduce visibility When working with coated plates that emit toxic fumes when heated use an air supplied respirator 2 Welding should be done in a closed area that does not open onto other working areas in order to protect all workers against radia tion and fumes If such an area cannot be provided the welding area must be delimi ted by protective screens painted in opaque black large enough to restrain the visibility of any person situated near the area Fig 3 Adequate local exhaust ventilation must be used in the area It should be provided through a mobile hood or through a builtin system on the workbench that provides exhaust ventilation from the sides the front and below but not from above the bench so as to avoid raising dust and fumes Local exhaust ventilation must be provided toge ther with adequate general ventilation and air circulation particularly when work is done in a confined space Fig 6 Any symptom of stain or soreness to the eyes the nose or the throat may be cause by inadequate ventila tion work must be stopped immediately and all necessary steps must be taken to provide adequate ventilation Remove all chlorinated solvents from the welding area before welding Certain chlori nated solvents decompose when exposed to ultraviolet radiation to form phosgene gas Never under any circumstances look at an electric arc without suitable eye protection Welding process must be performed on metal coatings thoroughly cleaned from la yers of rust or paint to avoid production of harmful fumes The parts degreased with a solvent must be dried before welding Do not weld metal or painted metal con Always wear protective goggles with tran taining zinc lead cadmium or beryllium un sparent lenses to prevent splinters or other less the operator or anyone else subjected to foreign particles from harming the eyes Fig the fumes is wearing respiratory equipment or an air supplied helmet 5 4

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