Precautions For Design・・・・・・・・・・・・・・・・・・・・・・・ P5,6 - SMC Networks JSX Series Operation Manual

1. Precautions for Design
Warning
1. Confirm the specifications.
Give careful consideration to the operating conditions, such as the application, fluid, and environment,
and use within the specified operating ranges. If the product is used beyond the specification range,
this may cause the product to break or malfunction. SMC does not guarantee against any damage if
the product is used outside of the specification range.
2. Cannot be used as an emergency shutoff valve, etc.
This product is not designed for use as an emergency shutoff valve. If the valve is used in this type of
system, other safety measures should be implemented.
3. Cannot be used for pressure holding (including vacuum)
Since the valve is subject to air leakage, they cannot be used to hold the pressure (including vacuum)
inside of a pressure vessel because valve air leakage is unavoidable.
4. Closed liquid circuit
In a closed circuit, when liquid is static, the pressure could rise due to temperature fluctuations. This
pressure rise could cause either a malfunction or damage to components such as valves. To prevent
this, install a relief valve in the system.
5. Actuator driving
When an actuator, such as a cylinder, is to be driven using a valve, take appropriate measures to
prevent potential danger caused by actuator operation.
6. Extended periods of continuous energization
The solenoid coil generates heat when continuously energized. Avoid using in sealed containers.
Install the valve in a well-ventilated area. Furthermore, do not touch the coil during or after energization.
7. Water hammer
When an impact, such as water hammer, etc., caused by rapid pressure fluctuation is applied, the valve
may be damaged. Install water hammer relief equipment (an accumulator, etc.) or use an SMC water
hammer relief valve (VXR series). Please contact SMC for details.
8. Back pressure
If there is a possibility that back pressure will be applied, take countermeasures by installing a check
valve, etc., on the downstream side.
9. Prohibition of disassembly and modification
Do not disassemble or modify the product or replacement parts, including additional machining. This
may cause human injury and/or an accident.
10. High flow/ Power saving type
Power consumption is reduced compared with the standard model by reducing the wattage required
to hold the valve in an energized state. Effective after being energized for more than 200 ms when the
voltage is applied.
The OFF time should be at least 2 s.
If the OFF time is less than 2 s, the coil may generate an
abnormal amount of heat, resulting in damage, depending
on the length of ON time.
Do not use in an environment subject to constant vibration
and/or impact.
The valve may close when held in an energized state.
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