SMC Networks JAS-L Series Operation Manual Download

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Caution

(1)Connection and disconnection of tube from

one-touch fitting

①

Installation of tube

1)Cut the tube perpendicularly, being careful not

to  damage  the  external  surface.  Use  an  SMC
tube cutter TK-1, 2, 3. Do not cut the tubing with
pliers,  nippers,  scissors,  etc.,  otherwise  the
tubing  will  be  deformed  and  problems  may
result.

2)The outside diameter of the polyurethane tubing

swells when internal pressure is applied to it.
Therefore, it may be impossible to re-insert the
tubing into One-touch fittings. Check the tubing
outside diameter, and when the accuracy of the
outside diameter is +0.07mm or larger

for φ2,

and +0.15mm or larger for other sizes, re-insert
it  into  the  One-touch  fitting  without  cutting  the
tube.When  the  tubing  is  re-inserted  into  the
One-touch  fitting,  confirm  that  the  tubing  goes
through the release button smoothly.

3)Grasp the tubing, and slowly push it straight

into the One-touch fitting until it comes to a
stop.

4)Pull the tubing back gently to make sure it has a

positive seal. Insufficient installation may cause
air to leak or the tubing to release.

②

Removal of the tube

1)Push the release button flange evenly and

sufficiently to release the tube.Do not push in the
tubing before pressing the release button.

2)Pull out the tubing while keeping the release

button depressed. If the release button is not
held down sufficiently, the tubing cannot be
withdrawn.

3)To reuse the tubing, remove the previously

lodged portion of the tubing.If the lodged portion
is left on without being removed, it may result in
air leakage and make the removal of the tubing
difficult.

(2)Connection of the metal rod accessories

Do not use tube, resin plug, reducer, etc. after
connecting a fitting with a metal rod (KC series,
etc.) to a One-touch fitting. This can cause the
disconnection of tube.

(3)When mounting the tube, resin plug or metal

rod, do not press the release button.

Do not press the release button unnecessarily
before mounting tubing, resin plugs and metal
rods. This can cause the disconnection of tube.

(1)When connecting piping to the

One-touch fitting, use a pipe length
with sufficient margin, in
accordance with the piping
conditions shown in Figure 1.

Also, when using a tying band, etc.,
to bind the piping together, make
sure that external force does not
come to bear on the fitting.

(see Figure 2)

Warning

(1)Type of fluids

Please consult with SMC when using the
product in applications other than compressed
air.

(2)When there is a large amount of drainage

Compressed  air  containing  a  large  amount  of
drainage  can  cause  the  malfunction  of
pneumatic  equipment.An  air  dryer  or  water
separator  should  be  installed  upstream  from
filters.

(3)Drain flushing

If condensation in the drain bowl is not emptied

on a regular basis,the bowl will overflow and
allow the condensation to enter the compressed
air lines.This causes the malfunction of
pneumatic equipment.If the drain bowl is difficult
to check and remove, the installation of a drain
bowl with an auto drain option is recommended.

For compressed air quality,refer to SMC catalog
"Compressed Air Purification System".

Air Supply

Precautions for One-Touch Tube Fittings

Mounting/ Piping

Recommended Piping Conditions

Unit

：

tubing

size

Mounting pitch A

Straight-line

Pipe length