Doc. No. ZQ-OM01301-A
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3.1.4
Precautions
1) When installing the product, allow sufficient space for maintenance and inspection.
2) Tightening torques exceeding the recommended values may damage the product and
mounting screws. Insufficient torque can cause displacement of the body from its proper
position as well as looseness of the mounting screws.
3) Do not drop, hit or apply excessive shock to the product. The exterior and internal parts,
solenoid valve and pressure switch may get damaged and malfunction.
3.2 Operating environment
1) Do not use in an environment where corrosive gases, chemicals, sea water, water or steam are
present. These can cause failure or malfunction.
2) Do not use the product in a place where the product could 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, it may be adversely affected (damage, malfunction, or hardening of
the lead wires).
3) Do not use the product in an area where surge is 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.
4) 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
a surge absorbing element built-in.
5) Take measures against surge voltages due to lightning strikes in the system.
The product is CE marked but not immune to lightning strikes, so take measures against lightning
strikes.
6) Be aware of excessive surrounding noise
The product is CE marked and has passed the EMC test, but excessive noises in the surrounding
area may affect the functioning of the product.
7) Mount the product in a location that is not affected by vibration or impact.
Failure and malfunction can occur.
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 this product in places where there are cyclic temperature changes.
Heat cycles other than ordinary changes in temperature can adversely affect the inside of the
product.
10) Do not use where the product is exposed to direct sunlight.
Shade the sunlight in locations where the product is exposed to direct sunlight.
Failure and malfunction can result.
11) Keep within the specified operating fluid and ambient temperature range.
The operating fluid and ambient temperature range is 5 to 50oC. 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. This can cause operating failure.