SMC Networks ASP Series Instruction Manual page 2

AS-TF222-156EN-B
7 Maintenance - Continued
• If any electrical connections are disturbed during maintenance, ensure
they are reconnected correctly and safety checks are carried out as
required to ensure continued compliance with applicable national
regulations.
• Do not make any modification to the product.
• Do not disassemble the product, unless required by installation or
maintenance instructions.
8 Limitations of Use
Warning
• The system designer should determine the effect of the possible failure
modes of the product on the system.
• The machine builder should determine the reaction time of the system.
8.1 Limited warranty and disclaimer/compliance requirements
Refer to Handling Precautions for SMC Products.
8.2 Effect of energy loss on valve switching
When the air pressure is cut, the valve closes.
8.3 Air supply
• For use with compressed air only. Do not use this product with a fluid
other than compressed air (e.g. oxygen, hydrogen, inflammable gas,
mixed gas, etc.).
• Use with air class [6:4:4] or higher as defined in ISO8573-1:2010
Compressed air – Part 1: Contaminants and purity classes. ASP may
not operate properly, disturbing the operation of the system.
8.4 Intermediate stopping
This product cannot be used for accurate and precise intermediate stops
of the actuator. Due to the compressibility of air as a fluid, the actuator
will continue to move until it reaches a position of pressure balance, even
though the pilot check valve closes with an intermediate stop signal.
8.5 Holding of pressure
Pilot check valves and actuators are not guaranteed for zero air leakage;
therefore, it is sometimes not possible to hold a stop position for an
extended period. If holding for an extended time is necessary, a
mechanical means for holding should be devised.
8.6 Cannot be used as an emergency shut-off valve
This product is not designed for safety applications such as an
emergency shut-off valve. If the valves are used in this type of system,
other reliable safety assurance measures should be adopted.
8.7 Release of pressure
• Actuators may move suddenly due to residual pressure, which can be
dangerous during maintenance procedures.
• When operating the residual pressure exhaust button or conducting
maintenance or inspection, the actuator may start moving due to the
residual pressure. Take appropriate measures in advance to prevent
an actuator movement from posing a hazard.
Caution
8.8 Low temperature operation
The valve can be used in an ambient temperature down to -5°C.
However, take measures to prevent freezing or solidification of impurities,
etc.
9 Product Disposal
This product shall not be disposed of as municipal waste. Check your
local regulations and guidelines to dispose this product correctly, in order
to reduce the impact on human health and the environment.
10 Contacts
Refer to www.smcworld.com or www.smc.eu for your
distributor/importer.
URL : https:// www.smcworld.com (Global) https:// www.smc.eu (Europe)
SMC Corporation, 4-14-1, Sotokanda, Chiyoda-ku, Tokyo 101-0021, Japan
Specifications are subject to change without prior notice from the manufacturer.
© SMC Corporation All Rights Reserved.
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