Warning
Warning
Warning
Piping
4. Piping to products
When piping to a product, avoid mistakes regarding the supply
port, etc.
This product is universal porting type. N.C type, N.O. type,
devider type and selector type can be used.
Symbol (Body ported)
Wiring
1. The solenoid valve is an electrical product.
For safety, install an appropriate fuse and
circuit breaker before use.
1. Polarity
When connecting power to a solenoid valve with a DC
specification and a light or surge voltage suppressor, check for
polarity.
If the polarity connection is wrong, the valve will not operate.
2. Applied voltage:
When electric power is connected to a solenoid valve, be
careful to apply the proper voltage. Improper voltage may cause
malfunction or coil damage.
3. Check the connections.
Check if the connections are correct after completing all wiring.
4. External force applied to the lead wire
If an excessive force is applied to the lead wire, this may cause
faulty wiring. Take appropriate measures so that a force of 30 N
or more is not applied to the lead wire.
Lubrication
Lubrication
1) The product has been lubricated for life by the manufacturer
and therefore, does not require lubrication while in service.
2) If a lubricant is used in the system, use class 1 turbine oil (no
additives), ISO VG32.
Once a lubricant is used in the system, lubrication must be
continued because the original lubricant applied during
manufacture will be washed away.
If turbine oil is used, refer to the Safety Data Sheet (SDS) of
the oil.
2.
Lubrication amount
If too much oil is supplied, the oil will be accumulated in the
product, causing malfunction or response delay.
Air Supply
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 detailed information regarding the quality of the compressed
air described above, refer to SMC's Best Pneumatics 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.
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
㎛
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 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
upstream 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 detailed information regarding the quality of the compressed
air described above, refer to SMC's Best Pneumatics catalog.
Caution
VK300
VK3000
Caution
Caution
VK300/3000 Series
Precautions for 3/5 Port Solenoid Valve 3
①
Be sure to read before handling.
- 6 -
VK300
**
-OMH0002-C
