WARNING
CAUTION
2.3.5 Vibration and impact at installation location
The following measures should be taken if there is vibration or impact at the location where this
product is installed.
①
When this product is used with the following conditions, after checking vibration or impact
conditions (particularly acceleration value, etc.), consult with our sales department.
1) Location where excessive vibration or impact is exerted
2) Location where vibration or impact is exerted continuously
②
Installation sections and connecting sections, etc. of this product should be locked to fix and fasten
securely. Particularly, when the product is used under highly frequent opening/closing conditions,
fastening should be performed with a significant margin in consideration of fatigue resistance.
③
Vibration isolation measures should be taken to reduce vibration or impact on the machine.
Pipelines should be fixed with supports, or vibration isolation material should be installed.
④
Joints should be checked periodically against looseness and deformation. In case of abnormal
conditions, bolts should be retightened or parts should be replaced. Coming off of fastening
bolts may cause falling off or rotation in an unexpected direction of this product.
2.3.6 Design of a connection part between a valve and this product
The following items should be checked when a connection part between a valve and this product is
designed.
①
Thrust load and lateral load should not be applied to the output shaft of this product.
②
At independent retainer should be installed to the valve stem of the valve to prevent travel in
the shaft direction. If the output shaft of this product is used as a retainer for the valve stem of
the valve, the valve stem may protrude due to fluid pressure when this product is removed.
③
The dimension to fit the output shaft of this product and the valve stem of the valve should be
secured sufficiently. Please refer to separate dimensional outline drawings for appropriate fit
dimension. If the fit dimension is insufficient, strength at fitting section may become insufficient,
resulting in damage.
2.3.7 Precautions at pneumatic piping
Pneumatic pipelines should be connected to this product while paying attention to the following
items. If dents or scratches are made on impact, to ensure safety stop using the product and
replace the product.
①
This product, attachments, and pneumatic pipelines should be kept free from external force or shock.
Rough handling may cause deformation of the output shaft, or air leakage due to damage of O-rings.
②
Standing on this product should be avoided at connecting pipelines. This product should not
be inserted by hitting the product.
③
Before connecting pipelines, pipeline members and fittings, particularly the air filter
secondary-side should be thoroughly cleaned by air blowing (flushing) or other suitable
cleaning method to remove cutting dust, oils and other debris.
④
When the pipelines and fittings are screwed into the unit, care must be taken to avoid infiltra-
tion of any cutting dust or sealant into this product.
⑤
When the fittings are screwed into the unit, excessive force may cause damage. After the
joints are screwed in lightly, the joints should be retightened in a 1/4 turn as a guide. The
reference value of the tightening torque is approx. 10 – 14 Nm.
⑥
In order to prevent infiltration of foreign substances into the piping air ports and vents, plugs
(tentative seal plugs) have been installed before shipping. Remove all of them before using.
2.3.8 Precautions for attachments
The following items should be checked on the attachments of this product.
①
The speed controller that is standard equipment of this product is fully opened when shipped.
Before using, please turn it in the closing direction (clockwise) and adjust the opening and closing
times. Please refer to 4-2 Speed controller for operation procedure of the speed controller.
②
The rotation speed should be adjusted with the speed controller. No speed adjustment should
be attempted by means of a pressure reducing valve. High speed opening/closing may cause
water hammer of the valve. Therefore, care should be taken in speed adjustment.
③
If the opening and closing times of this product influence system operation timing, leave a
sufficient margin for the opening and closing times. The opening and closing times may
change due to conditions, such as fluid pressure and temperature.
④
In order to prevent damage during transportation, parts, such as resin silencers, may be packed
without being installed. Please install them before operation after completing valve installation.
2.2.4 Storage
This product should be stored as follows to prevent contamination, discoloration, and material
deterioration.
①
This product should be stored in a place with no dust or water droplet while avoiding direct
sunlight, high temperatures and humidity.
②
This product should be stored in a packed state or with equivalent protective measures.
③
When this product which has been stored for more than 1 year is used, the operational status
of the product should be checked. If any abnormal condition is found, overhaul, and replace-
ment of deformed or degraded parts should be performed.
2-3 Installation and working environment
2.3.1 Obtaining space for installation location
For installation location, work space should be obtained around this product. If work space cannot
be obtained, parts may not be removed at maintenance.
2.3.2 Installation location and working environment
In the following installation locations or working environments, special actions, such as compliance with
laws and regulations, may be required in some cases as well as functional conformance to specifications. If
there are any questions, please contact our sales department at planning stage.
①
Special working environments which are not described in the specifications.
②
In the case where substantial damage to human beings, assets, environments, etc. is
predicted if the product fails.
e.g.: Facilities related to High Pressure Gas Safety Act, facilities related to Industrial Safety
and Health Act, Nuclear power related facilities, vehicles, medical facilities, etc.
2.3.3 Atmosphere of installation location
The following measures should be taken depending on the atmosphere of the location where this
product is installed.
①
Locations which are exposed to gas containing salt, corrosive gas, chemical solution, organic
solvent, steam, etc. should be avoided. For some kinds of atmosphere, anti-corrosive mea-
sures can be taken. Please consult with our sales department.
②
If there is a possibility that this product is exposed to direct radiant heat or chemicals, the
product and attachments should be protected with a cover, etc.
③
When a single-acting type cylinder is used outdoors or in a location where the unit is exposed
to water, the elbow of the exhaust port should be oriented downwards to prevent infiltration of
dirt, dust, rainwater, etc.
④
This product should not be submerged.
2.3.4 Temperature of installation location
The following measures should be taken depending on the temperature of the location where this
product is installed.
Using the product out of the specified temperature range causes thermal degradation or hardening of
O-rings, thermal expansion of parts, defective operation due to difference of thermal shrinkage, etc.
①
The ambient temperature of the installation location should be based on the specifications.
②
The supplied compressed air, etc. should be based on the specifications.
③
If the product is exposed to direct sunlight, the working temperatures of this product and
attachments should not exceed the upper limit.
④
This product should be kept away from heat sources, and installed in a location where the
temperature is within the specified temperature range. Particularly, ambient temperature may
exceed the specified temperature range near a motor, an air compressor, etc.
⑤
The attachments should be used within the appropriate temperature range of the attachments.
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