Dust-Proof Construction - YASKAWA YASNAC J50 Connecting Manual

4.3 DUST-PROOF CONSTRUCTION
Particles floating in the air (dust, cuttings, oil mist, etc.) may cause
malfunction of the CNC unit and the inner parts of theotherboads
(particularly CRT) to be mounted inside the cabinets the machine
manufacturers design and build. The construction of the cabinets,
therefore, should be such that it does not allow dust, etc. to enter
inside.
(1) The cabinets should be of totally-enclosed construction.
(2) Sealthe cable openings withpacking. (See Fig.4.1.)
(3) The door and the back cover should be securely sealed with
packing. (See Fig.4. 2.)
(4) Special caution is required for the CNC operator's panel as it
operates at high voltage and collects dust in the air. The
following points should be observed with regard to the pendant
box used to install the CNC unit.
(a) Seal the cable openings,
dooi."
back cover, etc. with packing to
eliminate gap.
(b) Packing is attached on the surface where the CNC operator's
panel istobe mounted. Usethependant boxas it is.
(5) Seal all gaps.
(6) Oil mist easily settles on the ceiling and enters the cabinets
through screw holes. Special precaution, therefore, should be
made using oil-proof packing, etc.