Plasma 70 S
Operating Manual Page 8
6. Initial operation
6.1 Installation of the cutting unit
When putting the unit in place, please make sure there is sufficient space for inlet and
outlet cooling air so that the rated duty cycle will be attained.
The unit should neither be exposed to moisture not to the plasma arc or the spark ray
caused by grinding work.
6.2 Mains connection To be carried out only by a qualified electrician!
Connect mains plug to mains cable as specified on the rating plate. The yellow-green lead
is provided for PE earth conductor. The three phases (black, brown, and blue) may be
connected to L1, L2, and L3 at random.
6.3 Compressed-air connection
By means of the rapid action hose coupling provided at the rear of the unit. Take care that
there is always an adequate supply of compressed air of the specified pressure.
Moreover, the air should be free of oil or water.
If the system is firmly connected to a compressed-air feed line which is
permanently under pressure, it should be disconnected at regular intervals to
allow the water trap to empty.
6.4 Connection of cutting torch
Plug the hose pack into the central connecting socket and fasten fingertightly with the
coupling rings provided.
To be able to fully utilize the service capacity of the unit, the cutting torch must be
designed for a minimum current load of 70 A.
Cutting can be carried out bothways either with the plasma nozzle touching the work-piece
or by using a distance nozzle.
6.5 Connection to workpiece
Connect workpiece with workpiece cable to corresponding socket. Pinch workpiece termi-
nal to workpiece, choosing an appropriate spot without paint or rust for good conductivity.
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