-6-
3) Connect piping/fittings using the recommended torque while holding the female thread side
tightly. Insufficient tightening torque can cause loose piping or sealing failure. Excess
tightening torque may cause damage to threads. If the female side is not held while tightening,
excessive force will be applied to the bracket directly, causing breakage.
Recommended tightening torque (Unit: Nm)
Thread
1/8
1/4
3/8
1/2
Torque 7 to 9 12 to 14 22 to 24 28 to 30
4) When a one-touch fitting of SMC is used, refer to the operation manual for the one-touch fitting.
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 damage. 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 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
8) Pipework for auto drain discharge which rises higher than the auto drain outlet should be avoided. It may
cause the auto drain operation to fail.
Air Supply
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 deteriorate the performance. Install the refrigerated air dryer or
aftercooler before the line filter.
3) Make sure that the supply pressure is not below the minimum operating pressure. If it is used at the
minimum operating pressure or less, pressure resistance increases, leading to the decrease of
operation life or operation failure.
Caution
1) Install the air filter AFM series or line filter AM series as a pre-filter to the inlet of the
product in order to avoid the clogging of early stage.
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 the operation manual. Incorrect
handling of the product may cause breakage or operation failure of the equipment or device.
3) Do not touch the product when operating at high temperature (40 to 60
o
C). The operators may get burnt.
Be sure to confirm that the temperature of the container or operating part is reduced to 40 degrees or
less to prevent burns.
4) Perform periodical check to find cracks, flaws or other deterioration on resin bowl. If any of them is seen,
as malfunction is caused, replace with new bowl or metal bowl. Investigate and/or review the operating
conditions if necessary.