Unitor UPC 85 ML, Instruction Manual

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08
PNEUMATIC CIRCUIT CONNECTION:
The machine uses compressed air for plasma cutting. Any cylinder of compressed air may therefore be
used, or air from a compressor. The air must be free from polluting particles, such as oil or other
contaminating agents. A pressure regulator is provided to ensure the correct air flow rate on the torch.
KEY:
1– Air filter
2– Reducer (pressure regulator)
3– Pressure gauge
4– Pressure switch
5– Solenoid valves
A pressure between 5 bar and 5.5 bar must be applied to the air filter located on the rear panel of the
machine (150l/min). The pressure must not exceed 6 bar. The pressure regulator 1 is set by the
manufacturer at 4.8 bar. Check the pressure by pressing the Air Test button on the front panel and check
that the pressure gauge gives a reading of 4.8 bar. If necessary to the correct pressure by turning the knob
on the pressure regulator.
A pressure switch (4) in the machine will stop operation if the pressure at output of the reducer (2) is below 3
bar, which is minimum to guarantee operation.
4 OPERATING INSTRUCTIONS
Place machine as far away from where cutting takes place as possible. Use all of the 6m torch length. This is
to prevent the fumes produced by cutting from being sucked into machine by the cooling fans through the
front and side ventilation openings.
BEFORE CUTTING
The operator may start up the machine only after having read and understood all parts of this manual.
Depending on the type of cut to be performed he must follow the work phases described below.
WARNING! A preflow of 2 seconds after pressing the torch button to alert the operator of the
imminent start of the pilot arc .
1.
Ensure that the work environment and your clothing satisfy the safety requirements described.
2. Position the unit in a place where there is no obstruction to air circulation.
3. Connect the unit to a suitable power socket (an earthed socket is obligatory).
4 . Connect the compressed air pipe to the air filter on the rear panel.
5. Ensure that there is no water in the air filter. If necessary, empty the filter.
NOTE! Air filter is a semi-automatic drain. Semi-automatic drain operates when the air line is
depressurised. When the filter is pressurised, the drain can still operate manually by pushing the
tube in the filter, which then protrudes outside the filter bowl.
6.
Return clamp must be clamped into the work piece or cutting table. The area must be free from oil, paint
and rust. Connect only to the main part of the work piece; do not connect to the part to be cut off.