Unitor UPC 1041, Инструкция по эксплуатации

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Revision date: 120813 Page 11 of 46
Recommendations to classify the environment (EN 50199):
Before the installation takes place the user has to evaluate the environment for electromagnetic
problems and to take into consideration:
Other mains supplies, control cables, signal and telecommunication lines along, above, below or
beside the installation.
Broadcasting or television installations
Computers or other controls
Safety devices, protection circuits
The health of people in the area (heart pace makers, hearing aids etc.)
Devices for measuring and calibrating
The noise immunity of equipment around the installation must be compatible with electromagnetic
interferences. Special measures may be required.
Recommendations to minimize interferences:
Apply filter for mains connection.
Screening of mains cable of the plasma installation (safe contact between screen and housing
required)
Constant maintenance
Always keep cover plates and doors of the plasma machines closed
Avoid excessive length of cutting cables
Arrange potential equalization between metallic parts around the installation (the operator has to be
insulated from those parts)
Proper return clamp connection onto the work piece
Selective screening of other cables and installations
Endangerment through heat and light radiation
The plasma arc produces intense ultraviolet and infrared radiation that can hurt the eyes and skin.
Therefore the following precautions have to be arranged:
Wearing of flame-retardant welding clothes (helmet, apron, gloves, safety shoes)
Hand or head shield with protective glasses of medium shade for watching the cutting process
Preparing the cutting area so that reflection and transmission of ultraviolet light is reduced, if necessary
use protective walls and screens
Endangerment through fumes and smoke
Due to the plasma process itself hazardous substances may be produced. To avoid risks on health the
following has to be done:
Keep cutting place well ventilated
Remove fumes and smoke by exhaustion devices
Remove all chlorinated and other solvents from the cutting area. They could form phosgene gas
when exposed to ultraviolet radiation
Wear a breathing mask when cutting galvanized materials
Ensure that toxic limits are not exceeded
Endangerment through noise
Be aware that during plasma cutting a high noise level arises, and can reach levels above 100 decibel.
Adequate ear protection must be used.
Endangerment through spatter
During plasma cutting sparks, slag and hot metal are produced. The risk of burns and fire exists! To
avoid these endangerments the following has to be advised:
Remove all potential flammable materials from cutting area, at least in a 10 m distance
Cool down freshly cut material before handling
Make fire extinguisher available in the cutting area