UNIFIRE
7. SAFETY INSTRUCTIONS
All endangerments through plasma cutting are related with the process itself. Endangerments
may occur due to:
-
High contact voltage
-
HV ignition
-
Electromagnetic interferences
-
Heat and light radiation
-
Gases, fumes and smoke
-
Noise
-
Hot metal and spatter
-
Handling of pressure cylinders
The Plasma Cutting Machine has been developed in conformity with following standards:
• EN 60974-1 safety requirements for installations for arc welding and welding power
sources
• EN 60974-10 electromagnetic compatibility
Before starting the Plasma Cutting Machine carefully read this Instruction Manual. Only
advised personnel are allowed to operate the plasma installation!
Endangerment due to high contact voltage
Warning!
Before opening the plasma rectifier generally the input power has to be disconnected
physically from the mains (unplug mains cable)! Only advised personnel are allowed to
carry out any repairs to the machine.
Attention! Connect the work piece cable and earth the workplace before starting the
machine!
The power source is equipped with a cooling unit and there is an electric potential between the
housing and work piece in case the work piece isn't earthed and the machine is switched on.
Because of the high resistance of more than 10 kOhm in the coolant the contact voltage is
absolute not dangerous but sensible.
Special hints:
-
Connect power source only to correctly earthed mains socket with proper connected
safety conductor
-
Wear insulating protective clothing (safety shoes, leather apron, gloves), place torch
on insulated holder,
-
Wear cutting area and plasma machine components dry and clean, arrange regular
inspections, never shorten safety circuits.
Working under elevated electrical endangerment
This plasma cutting machine in conformity with valid standards (EN 60974-1) can be used for
operation under elevated electrical endangerment
• The power source and the plasma torches are forming a safety-proofed installation which
can be separated only by using tools.
• The patented design of the torch prevents electrical danger when the torch consumables are
disassembled.
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