SMC Networks PF3W5 Series, Operation Manual

Page: 11 / 50

-10-
No.PF
※※
-OMN0010-J

Handling of flow adjustment valve

When flow is adjusted with the flow adjustment valve, do not apply excessive force to rotate it.
This can damage the valve mechanism.

When fixing the valve of the flow adjustment valve, do not apply excessive force to rotate the fixing knurl.
This can damage the knurl and valve mechanism.

After adjusting the flow, be sure to check that there is no water leakage.
After adjusting the flow, water leakage may occur due to the stability of the seal in the valve. If water leakage occurs,
open and close the valve several times to readjust it, and check that there is no water leakage.

The flow rate adjustment valve of this product is not suitable for applications which require constant
adjustment of flow rate.
Fluid leakage may be generated when the internal seal reaches the end of its life due to wearing.
Therefore, take measures to protect peripheral equipment, ensure maintenance space and pay
attention to the piping design.

The flow rate adjustment valve of this product is not suitable for applications which require reducing the
flow rate to zero completely. If it is necessary to reduce the flow rate to zero completely, install a stop
valve etc. separately.

Do not lift it by gripping the knob of the flow adjustment valve.
Hold the body when handling to avoid damaging the product.

If fluids with high temperature are flowed, the flow adjustment valve itself will also become hot, which
leads to a burn. Therefore, use the flow adjustment valve with special care.

Vinyl chloride piping

The vinyl chloride fitting (union) must be mounted and joined by an engineer with sufficient knowledge.
Be sure to confirm that there is no leakage from the fitting after mounting and joining. If it is mounted and joined by a
person who does not have sufficient knowledge and skills, it may lead to failure such as leakage.

When selecting adhesive for the vinyl chloride fitting (union), confirm that its heat resistance and
endurance are compatible with the operating temperature of the fluids used.
Otherwise, this may cause leakage and damage.

Do not apply excessive force to the vinyl chloride piping.
This may cause damage.

When the vinyl chloride piping type is used, the higher the fluid temperature, the lower the proof
pressure will be. Therefore, adjust the water hammer pressure carefully so that it does not exceed the
proof pressure.