(5) Do not apply torsion or bending moment other than the weight of the product itself. External piping
needs to be supported separately as it may cause breakage. Non-flexible piping like steel tube is
susceptible to excessive moment load or vibration. Insert flexible tubes to prevent this.
(6) Drain guide is not equipped with valve function. Be sure to connect piping for drain. No piping for
drain allows the drain and compressed air to exhaust freely. Also, the piping installation should be
performed with drain guide held by spanner to prevent breakage of bowl.
(7) The piping for drain from auto drain should be connected under the following requirements to
avoid operating failure.
Tubing for AD27-D: I.D. ø2.5 (ø3/32") or larger, Length 5 m (200 inch) or shorter
Tubing for AD37, 47(N)-D: I.D. ø4 (ø3/16") or larger, Length 5 m (200 inch) or shorter
Tubing for AD38, 48(N)-D: I.D. ø6.5 (ø1/4") or larger, Length 5 m (200 inch) or shorter
Air Source
Warning
(1) Use clean air. Do not use compressed air containing chemicals, organic solvent, synthetic oil or
corrosive gas as it may be cause of breakage of components or operation failure.
(2) Air containing too much moisture may cause malfunction. Install an air drier or aftercooler before
the air filter.
Handling Precautions
Warning
(1) Element service indicator (semi-standard: L) is used to check the differential pressure between IN
and OUT ports. When the differential pressure exceeds 0.025 Mpa, the element service indicator
may start even when the element is in initial state.
(2) When adjusting the flow rate of the product with an element service indicator, adjust the flow rate
from minimum to maximum. When the flow rate exceeds the maximum value, readjust the flow rate
from zero.
(3) As the element goes through its service life and begins to clog, the red part of the element service
indicator appears. Ensure that the element is replaced before the red indication reaches the upper
level.
Maintenance
Warning
(1) Release the pressure in the product to the atmosphere when replacing parts or removing piping.
(2) Maintenance and checks should be done by following the procedure in this operation manual.
Incorrect handling of the product may cause breakage or operation failure of the equipment or
device.
(3) Perform periodical check to find cracks, flaws or other deterioration on resin bowl.
If any of these appear, replace with a new or metal bowl. Otherwise, breakage may occur.
Investigate and/or review the operating conditions if necessary.
(4) Check for dirt in resin bowl periodically. If any dirt is seen, replace with new bowl. If removing dirt by
washing the resin bowl, never use washing material other than neutral detergent. Otherwise, the
bowl is damaged.
(5) Open and close the drain cock manually. The use of tools can result in damage to the product.
(6) Replace the element every 2 years or when the pressure drop at the output pressure from initial
operation becomes 0.1 MPa, whichever comes first, to prevent damage to the element.
(7) Discharge drain in the bowl before it reaches the element assembly. Refer to the section [8.
Operation and Adjustment] (P20-21) for discharging of drain.
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