Plasma 33 H
Operating Manual
Page 2
2. Safety Requirements
This cutting unit has been manufactured in accordance with the relevant international
standards. However, improper use or manipulation of the machine may cause hazards.
a) The unit is exclusively intended for plasma cutting processes. Service
personnel must be duly informed of all safety rules.
b) Electrical repair work must be carried out by qualified electricians.
c) Always disconnect mains prior to servicing, maintenance, and repair
work and before opening the casing.
The following safety instructions must be strictly observed:
2.1 Fumes
The plasma cutting process generates fumes and therefore the plasma cutting unit must
be operated in areas with adequate ventilation or outdoors. In the case of enclosed
working areas, a strong fume extraction system (preferably fitted below the cutting zone)
should be provided.
The cutting area of the workpiece has to be cleaned and free of solvants and degreasing
agents to prevent the formation of toxic gas.
The use of breathing equipment as well as a powerful extraction system and filtering of
toxic gas and fumes is obligatory when cutting materials which are likely to develope toxic
gases. Such materials include lead (also lead coatings
)
, galvanized parts, cadmium,
cadmium-plated bolts, beryllium (usually as an alloying constituent, ie. beryllium copper).
2.2 Radiation
The radiation from the arc may cause eye damage and skin burn. Therefore, eye protec-
tion should be worn in the form of a welder’s shield or a helmet. The skin must be protec-
ted by adequate safety clothing (welder’s gloves, leather apron, safety shoes).
Persons working close by should also be protected from the radiation of the arc.
2.3 Fire risk
Inflammable substances must be kept away from the cutting zone. There is a risk of igni-
ting by sparks and hot slag.
