YAMADA NDP-P20 Series, Operation Manual

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·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
Before using this product
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.
• Pressure Ratings are dependent on pump material and liquid temperature variations.
Please see “Temperature Pressure Curve” in the [10.1 Main specification] and check for the
allowable working pressure at the specific temperature of the liquid being pumped.
Air pressure and discharge pressure must not exceed the allowable working pressure.
If air pressure and discharge pressure exceed the allowable working pressure, it may cause
liquid leaks, damaged pump casings or diaphragms and could cause a 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 droppage, 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. Also when pump has positive suction head, liquid will be forced out from exhaust port
due to positive inlet pressure. Make sure to provide protective measures in consideration of
possible leakage of fluid (see NOTE: Arranging outside exhaust on P.10). For example using
a hose and pit etc., also be sure you are using a model with appropriate corrosion resistance
for the fluid to be pumped.
WARNING:
CAUTION :