JUKI MO-6904S - Cautions for the compressed air supply (source of supply air) facility

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7-7.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
StandardequipmentsuppliedbyJUKI
Air compressor
After cooler
Airtank
Mainlinelter
Air dryer
Mistseparator
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.
(Most troubles in the air solenoid valves are caused by carbon.)
Be sure to install a mist separator.
When the supply air contains a considerable amount of carbon and dust
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ow.
 • 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owing
out.
• Auto drains should be provided at all lower points or dead ends in order to prevent the drain from
settlinginthoseparts.