4 Installation and commissioning
HSD S.p.A. © - 0104h03a.fm100713
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4.6 Pneumatic connections
4.6.1 Specifications for the compressed air supplied to the
manufacturer's products
Introduce compressed air with purity according to ISO 8573-1, Class 2 4 3, i.e.:
• Class 2 for the solid particles: size of the solid particles < 1 m;
• Class 4 for humidity: dew point < 3°C (37.4°F);
• Class 3 for total oil: oil concentration < 1 mg/m
3
.
Failure to comply with these specifications may cause the malfunction of the
electrospindle.
The guarantee will be deemed as null and void if traces of pollutants are found
during repairs.
For example, compliance with the above specifications can be obtained following the
instructions written below:
If the machine has a lubricated air circuit, this must be isolated from the dry air circuit
feeding the electrospindle by means of non-return valves.
The filters shown in diagrams of the following figures must be installed as close as
possible to the electrospindle.
In view of the fact that the efficiency of the filters is <100%, it is important that the
machine tool is supplied with suitably treated air.
As an indication, introduce compressed air with a purity according to ISO 8573-1,
classes 7 6 4, into the circuits illustrated below, i.e.:
• Class 7 for solid particles:
dimensions of solid particles < 40 µm;
concentration of solid particles < 10mg/m3.
• Class 6 for humidity: dew point < 10°C (°F).
• Class 4 for total oil: oil concentration < 5 mg / m3.
At the end of the working day, discharge the compressed air system to allow the
filters to drain automatically.
Perform regular maintenance on the filters in line with the manufacturer's
instructions and replace them when they become saturated and less efficient
(approximately every 6/12 months).
1. Main compressed air supply.
2. Pre-filter 5 µm.
3. Oil separator filter 0.1 µm.
4. To the manufacturer's product.
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