SMC Networks VPX400 Series Operation Manual page 7

Wiring
Warning
(1) As a valve is an electric part, when using it, please
install an appropriate fuse or circuit breaker for the
purpose of safety.
Caution
(1) Applied voltage
When electric power is connected to the valve, do not apply a
voltage outside of specification.
Failure to follow this instruction may burn out the coil or cause
operation failure.
(2) Wiring check
After wiring, check whether the connections are correctly made.
(3) External force applied to the lead wire
Application of an excessive force to the lead wire may cause it
to be broken. Make sure that a force at 30 N or greater is not
applied to the lead wires. When specific product precautions
have a relevant instruction, follow it.
Lubrication
Warning
The valve has been initially lubricated and does not require any
further lubrication. Therefore, do not lubricate it with a lubricator
or the like.
Air Supply
Warning
(1) Type of fluid
The applicable fluid is compressed air.
(2) When amount of condensate is large
Compressed air containing a large amount of condensate can
cause malfunction of pneumatic equipment. An air dryer or
water separator should be installed upstream from filters.
(3) Draining control
If condensate in the air filter is not drained on a regular basis, it
will overflow to the downstream side to cause the malfunction of
pneumatic equipment. If draining control is difficult, installation
of a filter with an auto drain option is recommended.
For detailed information regarding the quality of the compressed
air described above, refer to SMC's "Compressed Air Cleaning
Systems."
(4) Use clean air.
Do not use compressed air if it contains chemical, synthetic oil
containing organic solvent, salt, or corrosive gases, etc., as it
can cause damage or malfunction.
Caution
(5) If ultra dry air is used as fluid, the lubrication
characteristics inside the equipment will deteriorate
and this can affect the reliability (life) of the product.
Therefore, when you intend to use ultra dry air,
contact SMC beforehand.
(25A-)VPX400 Series
3 port solenoid valve / Precautions 2
Be sure to read before handling.
(6) Install an air filter.
Install an air filter at immediate upstream of the valve.
Select an air filter with a filtration degree of 5 μm or finer.
(7) Take appropriate measures including installation
of an aftercooler, air dryer, or water separator to
ensure air quality.
Compressed air containing a large amount of condensate can
cause malfunction of valves and other pneumatic equipment.
Take appropriate measures including installation of an
aftercooler, air dryer, or water separator to ensure air quality.
(8) If excessive carbon powder is observed, install a
mist separator on the upstream side of the valve to
remove it.
If carbon dust is excessively generated by the compressor, it
may adhere to the inside of a valve and cause it to malfunction.
Refer to SMC's "Compressed Air Cleaning Systems" for further
details on compressed air quality.
Operating Environment
Warning
(1) Do not use the product in an environment where
corrosive gas, chemical, sea water, water, or steam is
contained in the atmosphere or may attach.
(2) Products with IP65 enclosures are protected
against dust and water. However, note that they
cannot be used under water.
(3) Products compliant with IP65 satisfy the respective
specifications once they are installed properly. Be
sure to read the precautions for each product.
(4) Do not use the product in an environment where
flammable gas or explosive gas exists. Failure to
follow this instruction may cause a fire or explosion.
The product does not have an explosion proof
construction.
(5) Do not use the product in a place subject to
vibration and/or shock.
(6) If the product is used in direct sunlight, a protective
cover or the like should be used.
Note that the product is not for outdoor use.
(7) If there is a heat source around the product, shut off
the radiant heat.
(8) If the product is used in an environment where oil,
weld spatter, etc. may attach, take appropriate
preventive measures.
(9) When the valve is installed in a control panel, take
measures against heat radiation in order to keep the
valve temperature within the specified range.
Caution
(1) Ambient environment temperature
Operate valves within the respective specification temperature
ranges. However, do not use the valves in such an environment
where the temperature greatly changes.
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No. DOC1092179