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5) If the air equipment is mounted on the outlet of the product, particles will be generated from the
equipment and required cleanliness may not be obtained. Instead, install the air equipment at the inlet.
Caution
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.
Selection
Warning
1) Grease is used on the internal sliding parts and seals. The grease may flow to the outlet side. If this is
not acceptable, please consult SMC.
2) Select the model so that the maximum discharge value (instantaneous) of the flow rate will not exceed
the rated air capacity.
3) N.O. type auto drain should be operated under the following conditions to avoid operating failure.
Operating compressor: 0.75kW 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.
4) N.C. type auto drain should be used under the following requirements to avoid operating failure.
AD27: Operating pressure 0.1MPa or more.
AD37, AD47: Operating pressure 0.15MPa or more.
Mounting
Warning
1) Do not drop or apply
impact during transportation or installation; It will cause damage to the product and
result in operation failure.
2) Do not install in areas of high humidity or high temperature. Operation outside of the product
specification range may cause damage to the product or operation failure, or shorten the product life.
3) Connect the product ensuring the direction of "1"(IN) and "2"(OUT) for air direction or an arrow. Incorrect
connections may cause malfunction.
4) Install with adequate space for maintenance beneath the product. Refer to 12. Dimensions (page 31) for
necessary space.
5) Install vertically so that outlet of drain is facing downward. It cannot be used in horizontal or upward
direction as it may cause operation failure.
Piping
Warning:
1) Before piping, perform flushing or cleaning of the piping, etc. to remove any cutting chips, cutting oil,
solid foreign matter, etc. from the piping. Contamination of piping may cause damage or malfunction.
2) When screwing together pipes and fittings, etc., be certain that chips from the pipe threads and sealant
do not get inside the pipe. When a sealant tape is used, leave 1.5 to 2 thread ridges exposed at the end
of the threads.
