KSD 2/2 Solenoid Valves Precaution
- Extended periods of continuous energization
The solenoid coil will generate heat when continuously energized.
Avoid using in a tightly shut container. Install the valve in a well-ventilated area.
Furthermore, do not touch it while it is being energized or right after it has been energized.
- Confirm the specifications
Give careful consideration to the operating conditions, such as the application, fluid, and environment,
and use within the specified operating ranges indicated in the catalog.
- Before using a fluid, confirm whether it is compatible with the materials from each model by referring
to the fluids listed in the catalog. Use a fluid with a dynamic viscosity of 50 mm2/s or less.
Corrosive fluids or seawater cannot be used. If water is to be used as the fluid, use clear water equivalent to tap water.
When using underground water, if the water is to be treated,
be sure to check the disinfectant or corrosion treatment’s compatibility with the product before use.
- The use of a fluid that contains foreign matter can cause problems,
such as malfunction and seal failure by promoting the wear of the valve seat and armature,
by sticking to the sliding parts of the armature, etc.
Install a suitable filter (strainer) immediately upstream from the valve.
- When used to supply water to boilers, substances such as calcium and magnesium, which generate hard scale and sludge,
are included. Since scale and sludge can cause the valve to malfunction,
install water softening equipment and a filter (strainer) directly upstream from the valve to remove these substances.
- Mount a valve with its coil position upwards, not downwards.
When mounting a valve with its coil positioned downwards,
foreign objects in the fluid will adhere to the iron core, leading to a malfunction.
Especially for strict leakage control, such as with vacuum applications and non-leak specifications,
the coil must be positioned upwards.
- Secure with brackets, except in the case of steel piping and copper fittings.
- Avoid sources of vibration, or adjust the arm from the body to the minimum length so that resonance will not occur.
- Preparation before piping
Before piping is connected, it should be thoroughly blown out with air (flushing) or washed to remove chips,
cutting oil, and other debris from inside the pipe.
Install piping so that it does not apply pulling, pressing, bending, or other forces on the valve body.
- Winding of sealant tape
When connecting pipes, fittings, etc., be sure that chips from the pipe threads and sealing material do not enter the valve. Furthermore, when sealant tape is used, leave 1.5 to 2 thread ridges exposed at the end of the threads.
- Switch valves at least once every 30 days to prevent malfunction.
Also, in order to use them under the optimum state, conduct a regular inspection biannually.
- Make sure when using solenoid valves that the flow direction is from IN to OUT.
- When an impact, such as water hammer, etc., caused by rapid pressure fluctuation is applied, the solenoid valve may be damaged.
Do not use the product in such locations as those described below.
- Locations with atmospheres where water vapor is present or locations where corrosive fluids (chemicals), sea water, or water may come into contact with the product. Implement appropriate protective measures if water will be applied to the product for long periods of time, even for products which have IP65 or IP67 enclosures. Such water may enter through microscopic gaps in the product's external surfaces, resulting in fire damage or short-circuiting of the solenoid valve coils. If installing the product in close proximity to equipment, such as machine tools, processing machines, etc., which uses large amounts of liquids or oils, be sure to confirm that liquid dispersal or spatter from the peripheral equipment does not come into contact with the product.
- Locations with explosive atmospheres
- Locations subject to vibration or impact
- Locations where radiated heat will be received from nearby heat sources
- Removal of product
The valve will reach a high temperature when used with high temperature fluids. Confirm that the valve temperature has dropped sufficiently before performing work. If touched inadvertently, there is a danger of being burned.
- Shut off the fluid supply and release the fluid pressure in the system
- Shut off the power supply
- Dismount the product