SMC Networks SV Series Manual page 6

3/4/5-Port Solenoid Valves
Precautions 6
Be sure to read this before handling products.
Lubrication
Warning
1. Lubrication
[Rubber seal]
1) All valves except those listed below have been lubricated
for life by the manufacturer and therefore do not require
lubrication while in service.
Valves requiring lubrication
VP450, VP470, VP315, VPA450, VPA470, VPA315
2) If a lubricant is used in the system, use class 1 turbine oil
(no additives), ISO VG32. For details about lubricant manu-
facturers' brands, refer to the SMC website. Additionally,
please contact SMC for details about class 2 turbine oil
(with additives) ISO VG32.
Once lubricant is utilized within the system, since the
original lubricant applied within the product during manu-
facturing will be washed away, please continue to supply
lubrication to the system. Without continued lubrication,
malfunctions could occur.
If turbine oil is used, refer to the Safety Data Sheet (SDS)
of the oil.
3) As the valve listed below already has a special lubricant
applied, please use it without additional lubrication.
Valve not requiring lubrication
V114UT
[Metal seal]
1) These valves can be used without lubrication.
2) If a lubricant is used in the system, use class 1 turbine oil
(no additives), ISO VG32. For details about lubricant manu-
facturers' brands, refer to the SMC website. Additionally,
please contact SMC for details about class 2 turbine oil
(with additives) ISO VG32.
2. Lubrication amount
If the lubrication amount is excessive, the oil may accumulate
inside the pilot valve, causing malfunction or response delay.
So, do not apply a large amount of oil. When a large amount
of oil needs to be applied, use an external pilot type to put the
supply air on the pilot valve side in the non-lube state. This
prevents the accumulation of oil inside the pilot valve.
Air Supply
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. This may cause 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 the SMC Best Pneumatics
No. 6 catalog.
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. When extremely dry air is used as the fluid,
degradation of the lubrication properties
inside the equipment may occur, resulting in
reduced reliability (or reduced service life) of
the equipment. Please consult with SMC.
2. Install an air filter.
Install an air filter upstream near the valve. Select an air filter
with a filtration size of 5 µm or smaller.
3. Take measures to ensure air quality, such as
by installing an aftercooler, air dryer, or water
separator.
Compressed air that contains a large amount of drainage can
cause the malfunction of pneumatic equipment, such as
valves. Therefore, take appropriate measures to ensure air
quality, such as by providing an aftercooler, air dryer, or water
separator.
4. If an excessive amount of carbon powder is
present, install a mist separator on the up-
stream side of the valve.
If excessive carbon dust is generated by the compressor, it
may adhere to the inside of a valve and cause it to malfunction.
For compressed air quality, refer to the SMC Best Pneumatics
No. 6 catalog.
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