[SM-206792-A/3]
―
21
―
OPERATION
５
5.2.4 Foreign matter in the compressed air
1) Supply clean compressed air that does not include oxidized oil, tar, carbon, or
other foreign matter from the air compressor.
(1) If oxidized oil, tar, carbon, or the like enters a pneumatic device and sticks to
its components, an increase in the resistance at sliding portions may cause a
malfunction.
(2) If oxidized oil, tar, carbon, or the like is mixed with the supplied lubrication
oil, wear of the sliding components of the pneumatic device may be acceler-
ated.
2) Supply clean compressed air that does not include solid foreign matter.
(1) Solid foreign matter in the compressed air may cause wear of the sliding
components of the pneumatic device or stick to such components and cause
hydraulic lock.
5.2.5 Cleaning the supplied air
Compressed air usually contains a large amount of drain (water, oxidized oil,
tar, and foreign matter). Remove these elements and clean the supplied air
because they may cause a failure of the air compressor. For example, re-
move the humidity using an after-cooler dryer and remove the tar using a tar
filter.
