If a stable reproducibility is necessary for the response time of the system, install a precision
regulator before the product.
The response time is affected by the working pressure and the capacity of the load on the
secondary side.
Take the following measures to prevent malfunctions caused by noise.
• Insert a line filter in the AC power supply line.
• Use a surge suppressor such as a CR or diode for the inductive load (such as a solenoid valve
or a relay) to remove noise at its source.
• Install the wiring for the product away from strong electric fields.
• Connect the shielded wires to the ground on the power side.
• Wire the power lines as short as possible.
• Do not share the power supply with noise-generating devices such as inverters or motors.
• Do not wire the power cables and the signal cables in parallel with other power lines.
Do not use air of poor quality.
• For the source of pneumatic air, use clean air from which solids, moisture, and oil have been
sufficiently removed with a dryer, an air filter, and an oil mist filter. Do not use air containing oil
that adversely affects the product characteristics.
• When the secondary side pressure is reduced with an input signal, the secondary side air
passes through the product and is discharged from the exhaust port. Maintain the inside of the
pipes clean since contamination inside the secondary side pipes and the load also has an
adverse effect on the product characteristics.
Do not expect the pressure on the secondary side to remain for a long period. Take measures
to remove residual pressure as necessary.
The pressure on the secondary side will remain if the power is turned off while the pressure is
applied but not for a long period. Reduce the set pressure with an input signal and then turn off the
power or discharge the pressure using a residual pressure exhaust valve as necessary.
Make sure that the primary side pressure does not become lower than the minimum working
pressure (EVD-1100: set pressure +50 kPa, EVD-1500/1900: set pressure +100 kPa).
Not supplying the primary side pressure for a long period while the power is turned on will shorten
the product service life.
Before using the product as an air blow with the control pressure of the secondary side
released to the atmosphere, test the usage under actual conditions of use or contact CKD.
The pressure may fluctuate depending on the piping and blowing conditions.
Select a dryer, an air filter, an oil mist filter, and a regulator that can accommodate a flow rate
higher than the flow rate used for the product.
When using the product out of the specified conditions or for a special application, consult
CKD about the specifications.
Do not use the product where it is exposed to direct sunlight or where water, oil, and other
liquids may directly splash onto the product.
Do not install the product in places where moisture, saline matters, dusts, or cutting chips are
present and pressure is applied or reduced.
The degree of protection of the product is equivalent to IP40. The product cannot be used where
the temperature changes sharply or humidity is high as condensation may develop in the product
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