4
····Warnings and cautions
Warnings and cautions
Warnings and cautions
Warnings and cautions
For safe use of this product, be sure to note the following: In this document, warnings and cautions are
indicated by symbols. These symbols are for those who will operate this product and for those who will be
nearby, for safe operation and for prevention of personal injury and property damage.
The following warning and caution symbols have the meanings described below. Be sure to remember their
meanings.
If you ignore the warning described and operate the product in an
improper manner, there is danger of serious bodily injury or death.
If you ignore the caution described and operate the product in an
improper manner, there is danger of personal injury or property damage.
Furthermore, to indicate the type of danger and damage, the following symbols are also used along with those
mentioned above:
This symbol indicates a DON'T, and will be accompanied by an explanation on
something you must not do.
This symbol indicates a DO, and will be accompanied by instructions on something
you must do in a certain situation.
····Operating caution
Operating caution
Operating caution
Operating caution
Before using this product
WARNING
WARNING
WARNING
WARNING
•When using compressed gas (hereinafter called "compressed air") to drive this pump, be sure
it is one of the following:
* Compressed air supplied from an air compressor
* Nitrogen (N
2
) gas
Use of compressed air other than the above may cause air pollution, damage to the pump, or
even an explosion.
•The maximum permissible pressure for the compressed air, and the fluid pumped by one of
these pumps, depending upon the casing material of the model you are using, is as follows:
*Metal casing (aluminum, stainless steel, forged iron): 0.7MPa (7kgf/cm
2
)
*Plastic casing (polypropylene, fluorine resin): 0.7MPa (7kgf/cm
2
)
(0.5MPa for the DP-05F until DP-20F) (0.7MPa for the DP-25F/38F)
If the pressure of the compressed air and fluid exceeds the above applicable maximum
permissible pressure specified above, there may be leakage of fluid, damage to the casing,
or even a severe, possibly even fatal, accident.
•When moving this product, make sure that the internal pressure is released.
If the pump is moved while under pressure, any shock imparted by drop page,
etc. may damage the pump or even cause an explosion.
•Hazardous fluids (with strong acid or alkali, flammable or toxic) or gas bubbles generated by such
fluids may cause serious injury or even death if accidentally inhaled or consumed or if they come into
contact with the eyes or adhere to skin. Therefore, the following precautions are strongly advised.
*Be fully familiar with the properties of the fluid to be pumped and work in strict accordance with
the operating instructions provided by the suppliers of such fluids (such as wearing goggles,
gloves, mask or work clothes).
*When storing a hazardous fluid, strictly comply with the regulatory procedures (such as using
proper containers, storage conditions, etc.).
*Always install the piping and exhaust port of this pump away from human and animal traffic.
When a diaphragm is damaged, fluid will gush out together with air through the exhaust port.
Provide protective measures in consideration of possible leakage of fluid (see Notes: Arranging
outside exhaust on p.20). When you use the hose and pit etc., be sure you are using a model with
appropriate corrosion resistance for the fluid to be pumped.
WARNING:
CAUTION :
