Cautions For The Compressed Air Supply (Source Of Supply Air) Facility - JUKI PS-800-8045 Instruction Manual

3-2. Cautions for the compressed air supply (source of supply air) facility

As large as 90 % of failures in pneumatic equipment (air cylinders, air solenoid valves) are caused by "con-
taminated air."
Compressed air contains lots of impurities such as moisture, dust, deteriorated oil and carbon particles. If
such "contaminated air" is used without taking any measures, it can a cause of troubles, inviting reduction in
productivity due to mechanical failures and reduced availability.
Be sure to install the standard air supply facility shown below whenever the machine provided with pneumat-
ic equipment is used.
Standard air supply facility to be prepared by the user
Air compressor
After cooler
Air tank
Main line filter
Air dryer
Mist separator
Filter regulator
Air solenoid valve
Air cylinder
Cautions for main piping
• Be sure to slope main piping by a falling gradient of 1 cm per 1 m in the direction of air flow.
• If the main piping is branched off, the outlet port of the compressed air should be provided at
the top part of the piping using a tee in order to prevent drain settling inside the piping from
flowing out.
• Auto drains should be provided at all lower points or dead ends in order to prevent the drain
from settling in those parts.
Auto-drain
Auto-drain
Quality of the air supply
When the supply air contains a considerable amount of moisture
Ambient environment
When our machine is installed at a place where the temperature greatly
changes in the morning and in the evening from that in the daytime or
freeze is like to occur.
In the aforementioned cases, be sure to install an air dryer.
When the supply air contains a considerable amount of carbon
and dust
(Most troubles in the air solenoid valves are caused by carbon.)
Be sure to install a mist separator.
Standard equipment supplied by JUKI
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