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A P P L I C A T I O N A N D O P E R A T I O N
5.3
Maintenance unit and air purity
during operation
The spindle is equipped with a sealing-air feature.
This sealing air prevents shavings/chips and dust
from entering the spindle. The service unit filters
possible contamination in the sealing air and thus
prevents costly machine damage.
For operation, the compressed air must fulfil the
E N
following minimum requirements:
_ Flow rate: 400 l/min
_ Pressure: 6 – 8 bar
Requirements on air purity:
_ Solid contaminants:
Class 3; Filter grade better than 5 μm for solids
_ Water content:
Class 4; Max. pressure dew point +3°C
_ Total oil content:
Class 3; Max. oil content 1 mg/m
In continuous operation, the pressure and the air-
flow rate are monitored by the milling machine.
When the required values are fallen below, the
milling program stops. Once the correct air values
are available again, the machine automatically
carries out the milling program.
32
5.4
If an extraction system not recommended by the
manufacturer is used, this extraction system must
fulfil the following requirements:
_ Extraction capacity: 240 m
_ Suitability for zirconium-oxide dusts
_ HEPA microfilter (capture 99.97 % at a particle
size of 0.3 μm)
The connection of the extraction hose to the
machine is made with an adapter (in delivery
scope). The adapter fits extraction hoses with a
38 mm interior diameter.
Danger from inhalation of respirable milling
waste!
▷ Only use tested HEPA microfilters (capture
3
99.97 % at a particle size of 0.3 μm).
6
Instructions on application and operation are
shown directly on the machine display.
Danger from shavings/chips or tool fragments
being thrown from the machine!
▷ Make sure that the door of the milling machine
is always closed during machining!
Danger of crushing at the material replacement
door!
▷ Use recessed grip.
Requirements for the extraction
system
3
/h
WARNING:
Application and Operation
WARNING:
CAUTION:
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