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Air filter, lubricator, filter regulator and mist separator
(1) Avoid the application where charge and discharge of pressure to/from a standard bowl is
switched frequently. This may damage the bowl. A metal bowl is recommended in these cases.
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Regulator and filter regulator
(1) A safety device needs to be installed if output pressure is exceeding the set pressure, otherwise
this can cause breakage of outlet device and equipment or lead to malfunction.
Caution
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Air filter, filter regulator and mist separator
(1) AD27-D with auto drain may have leakage of accumulated drain during pressure exhaust (this
leakage is allowed in their constructions and not considered failure). Be sure to connect piping for
drain.
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Regulator and filter regulator
(1) Allowed air consumption from the exhaust port is 0.1 L/min(ANR) or less.
Selection
Warning
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Air combination
(1) Grease used on the internal sliding parts and seals may flow to the outlet side. If this is not
acceptable, please consult SMC.
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Air filter, filter regulator and mist separator
(1) N.O. type auto drain should be operated under the following conditions to avoid malfunction.
Operating compressor: 0.75 kW or more, Discharged flow rate: 100 L/min (ANR) or more
When using 2 or more auto drains, multiply the value above by the number of auto drains to find
the capacity of the compressors you will need. For example, when using 2 auto drains, 1.5 kW
(200 L/min (ANR)) of the compressor capacity is required. The operating pressure should be
0.1 MPa or more.
(2) N.C. type auto drain should be operated under the following conditions to avoid malfunction.
Operating pressure for AD27: 0.1 MPa or more, for AD37 and AD47: 0.15 MPa or more.
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Regulator and filter regulator
(1) Residual pressure of product without backflow function is released unstably even though the inlet
pressure is released (residual pressure might be left in the product). Please select product with
backflow function to release the residual pressure completely.
(2) Long absence of operation or operation with sealed circuit or balancing circuit on the outlet side
may cause set pressure fluctuation. Please consult SMC if this is not acceptable.
(3) Set range of outlet pressure shall be 85% or less of the inlet pressure. Operating at a setting
exceeding 85% causes the outlet pressure to be easily affected by fluctuations in flow rate and
inlet pressure, leading to instability.
(4) Since the safety margin is calculated to the maximum value of the set pressure range shown in the
specification table, the pressure setting may be over the maximum value. However, use the
product within the specified range.
(5) If the product is used with circuit which requires high exhaust sensitivity or set precision, please
consult SMC.
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Lubricator
(1) Please consult SMC when the lubricator is used other than for lubricating pneumatic equipment.
(2) Please consult SMC when the lubricator is used at high frequency, such as press machine, as the
internal components may break or operation failure may occur on the outlet side equipment.
(3) If the air consumption is small, oil may not drip. Select a proper size of product according to the
minimum dripping flow rate.
(4) Do not flow from the outlet side (backflow) as it may cause breakage of the internal components.
(5) When the piping is branched on the inlet side, install a check valve to prevent the lubricant from
back flowing.
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