Specific Product Precautions - SMC Networks KFG2H-C Series Operation Manual

2. Specific Product Precautions (1)

Design/Selection
Warning
(1) Check the specifications.
The product in this catalog is designed to be used
in compressed air systems (including vacuum),
water only. If the product is used in an
environment where pressure or temperature is out
of the specified range, damage and/or malfunction
may result. (Refer to the specifications.)
Do not use beverages or food as operating fluid
used inside the product.
The design of this product is not intended to use
beverages or food as an operating fluid.
Please consult with SMC when using a fluid other
than compressed air (including vacuum),water.
We do not guarantee against any damage if the
product is used outside of the specification range.
(2) Do not disassemble the product or make any
modifications, including additional machining.
It may cause human injury and/or an accident.
Caution
(1) Keep the connection part of fittings and tubing
from rotating or oscillating movement.
The fittings may be damaged if they are used in
the above manner.
(2) The tubing bending radius in the vicinity of the
fitting should be at least the minimum bending
radius of the tubing.
If the bending radius is less than the minimum
value, fittings may be damaged, or tubing may
crack or be crushed. The minimum bending radius
of the FR soft nylon tubing (TRS series), FR
double layer tubing (TRB series), antistatic soft
nylon tubing (TAS series), polyolefin tubing (TPH
series), soft polyolefin tubing (TPS series) is
measured as following in accordance with JIS
B8381. Tubing deformation ratio at the minimum
bending radius is obtained through the following
formula, based on tubing diameter and mandrel
diameter by wrapping the same radius mandrel
tube.
Tube deformation ratio at the minimum
bending radius
 L - D 
η  1 
= −
2d
 
Here, η: Deformation ratio (%)
d: Tubing diameter (mm)
L: Measured length (mm)
D: Mandrel diameter (mm)
(Twice against the minimum
bending radius)
Test temperature: 20 +/5
Relative humidity: 65 +/5%
(3) Do not use fluids other than listed on the
specifications.
Applicable fluids are air and water, steam. Please
consult with SMC if using other fluids.
100
×
o
C
(4) When it is used with water, the fittings or
tubing may be damaged depending on the
surge pressure.
(5) Surge pressure must be under the maximum
operating pressure. If the surge pressure
exceeds the maximum operating pressure, it
will result in damage to fittings and tubing.
(6) This product is not sterilized. The product
should be cleaned and sterilized before use.
(1) Operation manual
Install the products and operate them only after
reading the operation manual carefully and
understanding its contents. Also, keep the manual
where it can be referred to as necessary.
(2)Ensure
activities.
When installing the products, allow access for
maintenance.
(3) Adhere to the thread tightening method.
When installing the products, refer to "Connection
Thread Tightening Method".
(4) There may be cases of the tubing detaching
from the
uncontrollably due to tubing degradation or
fitting breakage.
To prevent
uncontrollable, fit the tubing with a protective
cover or fix it in place.
(1) Preparation before piping
Before piping is connected, the mounting surface of
the female thread should be thoroughly cleaned out
with air (flushing) or washed to remove chips,
cutting oil and other debris from inside the pipe.
(2) Check the model, type and size before
installation.
Also, confirm that there are no scratches, gouges
or cracks on the product.
(3) When connecting the tubing, take pressure or
possible changes to the tubing length into
account, and allow a sufficient margin.
Failure to do so may result in fitting breakage or
detachment
Mandrel
recommended piping conditions.
(4) Do not apply unnecessary forces such as
twisting, pulling, moment loads, vibration and
impact, etc. on fittings or tubing.
This will cause damage to the fittings and will
crush, burst or release tubing.
- 5 -
Mounting/ Piping
Warning
sufficient space for
fitting and thrashing
the situation
Caution
of the tubing.
maintenance
around
from becoming
Refer to the