Doc. No.ZL3-OM00601
8
3.1.3 Precautions
1) When installing the product, allow sufficient space for maintenance and inspection.
2) Tightening torque exceeding the recommended value may damage the product and
mounting screws. Insufficient torque can cause displacement of the body from its proper
position and the looseness of the mounting screws.
3) Do not drop, hit or apply excessive shock to the product. The internal parts, solenoid valve and
pressure switch may get damaged and malfunction.
3.2 Operating environment
1) Do not use in an atmosphere where corrosive gases, chemicals, sea water, water or water
steam is present. These may cause failure or malfunction.
2) Do not use the product in an environment where the product may be splashed by oil or
chemicals. If the product is to be used in an environment containing oils or chemicals such as
coolant or cleaning solvent, even for a short time, the pressure switch may be adversely
affected (damage, malfunction, or hardening of the lead wires).
3) The suction filter is not included in the product. Malfunction may occur by contamination into the
product such as dust contained in the surrounding environment. It is recommended to use SMC's
vacuum filter (AFJ series) in order to avoid problems.
4) Do not use in a location where surges are generated. When there are machines or equipment
that generate large surge near the pressure switch (magnetic type lifter, high frequency
inductive furnace, motor, etc.), this can result in deterioration and damage of the internal
elements. Take measures against the surge sources, and prevent the lines from coming into
close contact.
5) Do not use a load which generates surge voltage. When a surge-generating load such as a
relay or solenoid is directly driven, use the product with built in surge protection.
6) The product is CE marked, but not immune to lightning strikes, so take measures against
lightning strikes. Be aware of excessive surrounding noise. The product is CE marked, but
settings may change if excessive noise is applied.
7) Do not install this product in a location subject to vibration and impact. Otherwise it can cause
damage or malfunction.
8) Do not let foreign matter, such as wire debris, get inside the product. In order to avoid failure
and malfunction, do not let foreign matter, such as wire debris, get inside the product.
9) Do not use the product in an environment that is exposed to cyclic temperature patterns. Heat
cycles other than ordinary changes in temperature can adversely affect the internal
components of the product.
10) Do not expose the product to direct sunlight. If using in a location directly exposed to sunlight,
protect the product from the sunlight. Otherwise it can cause damage or malfunction.
11) Keep within the operating fluid temperature and ambient temperature range. Operation under
low temperature may lead to damage or operation failure due to frozen moisture in the fluid or
air. Protection against freezing is necessary. Mounting of an air dryer is recommended for
elimination of drainage and water. Avoid abrupt temperature changes even within the
specified temperature range.
12) Do not use in a location where the product is exposed to radiant heat from surrounding heat
sources. Otherwise malfunction can result.
