SMC Networks SX3000 Series Operation Manual Download Page 7

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Mounting

Operation manual

Install the products and operate them only after reading the
operation manual carefully and understanding its contents. Also,
keep the manual where it can be referred to as necessary.

Ensure sufficient space for maintenance activities.

When installing the products, allow access for maintenance and
inspection.

Tighten threads with the proper tightening torque.

When installing the products, follow the listed torque
specifications.

If air leakage increases or equipment does not

operate properly, stop operation.

Check mounting conditions when air and power supplies are
connected. Initial function and leakage tests should be
performed after installation.

Painting and coating

Warnings or specifications printed or affixed to the product
should not be erased, removed or covered up.
Please consult with SMC before applying paint to resinous parts,
as this may have an adverse effect due to the solvent in the
paint.

Piping

1. Refer to the Fittings and Tubing Precautions for

handling One-touch fittings.

2. 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.

3. Winding of sealant tape

When screwing piping or fittings
into ports, ensure that chips
from the pipe threads or sealing
material do not enter the piping.
Also, If sealant tape is used,
leave 1 thread ridge exposed
at the end of the threads.

osed center types

For closed center type, check the piping to prevent air leakage
from the piping between the valve and the cylinder.

5. Connection of piping and fittings

When screwing piping or fittings into valves, tighten them as
follows.

(1) When using SMC’s fittings, follow the procedures below to

tighten them.

1) M5

First, tighten by hand, then use a suitable wrench to tighten

the hexagonal portion of the body an additional 1/6 to 1/4
turn. The reference value for the tightening torque is 1 to 1.5
N·m.

Note) Excessive tightening may damage the thread portion or

deform the gasket and cause air leakage. Insufficient
tightening may loosen the threads or cause air
leakage.

(2) When using a fitting other than an SMC fitting, follow the

instructions given by the fitting manufacturer.

2) Rc

Tighten with the proper torque shown below.

Screwing piping

Reasonable tightening torque

･

Rc1/8

3 to 5

Rc1/4

8 to 12

Rc3/8

15 to 20

6. Piping to products

When piping to a product, refer to the operation manual to avoid
mistakes regarding the supply port, etc.

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 equipped with a light or surge voltage
suppressor, check for polarity.
If there is polarity, take note of the following.

Without diode to protect polarity:

If a mistake is made regarding the polarity, damage may occur
to the diode in the valve, the switching element in the control
device, power supply equipment, etc.

With diode to protect 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. When instructions are

given in the Specific Product Precautions, follow these

specifications.