SMC Networks DAS Operation Manual page 9

Precautions for One-Touch Tube
Fittings
Mounting/Piping
Caution
(2) 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.
(3) When using a tube other than that from SMC,
make sure that the tube material and the O.D.
accuracy satisfy the following specifications.
1) Nylon tube: within ±0.1 mm
2) Soft nylon tube: within ±0.1 mm
3) Polyurethane tube: within -0.2mm to
+0.15mm
Do not use a tube that does not satisfy the
specified tubing O.D. accuracy, or if a tube has a
different I.D., material, hardness, or surface
roughness from those of SMC's tube. Please
consult with SMC if there is anything unclear. It
may cause difficulty in connecting the tube,
leakage, disconnection of the tube, or fitting
damage.
Recommended Piping Conditions
(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)
Tubing size
Nylon tube
φ4,φ5/32" 56or more
φ6 84or more
φ1/4" 89or more
φ8,φ5/16" 112or more
φ10 140or more
φ3/8" 134or more
φ12 168or more
φ1/2" 178or more
Mounting pitch A
Soft nylon Polyurethane
tube tube
44or more 26or more
66or more 39or more
70or more 57or more
88or more 52or more
110or more 69or more
105or more 69or more
132or more 88or more
140or more 93or more
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
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
compressed
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".
(4) Use clean air
Do not use compressed air that contains
chemicals, synthetic oils that include organic
solvents, salt, corrosive gases, etc., as it can
cause damage or malfunction.
Caution
(1) Install an air filter.
Install an air filter at the upstream side of
valve. Select a filtration rating of 5 µm or
below, or that equivalent to or lower than ISO
8573-1:2010 [6:4:4]
* This rating is equivalent to the rating
produced when an air filter is installed for the
purity
compressed air.
Unit:mm
(2) Ensure that the fluid and ambient
Straight-
line Pipe
temperatures are within the specified range.
length
If the fluid temperature is 5
20or more
30or more
moisture in the circuit could freeze, causing
32or more
damage to the seals or leading to equipment
40or more
50or more
malfunction.
48or more
measures to prevent freezing.
60or more
64or more
For compressed air quality, refer to SMC
catalog "Compressed Air Purification System".
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Doc.no.DOC1018150
Air Supply
can cause the
the condensation
air lines. This
class [7:4:4] of
Therefore, take appropriate
malfunction of
to enter the
causes the
the inlet side
℃
or less, the