3
WARNING
• When installing this product, be sure to connect a ground wire from the specified position of
this product (excluding NDP-5FPT, NDP-15FP
□
).
When this product is installed and operated without the ground wire properly connected,
friction between parts, as well as abrasion caused by the flow of some fluids inside the
casing, may generate static electricity. Also, depending on the type of fluid being pumped and
the installation environment (such as gases in the air and type of surrounding fixtures),
static electricity could become a cause of fire or electric shock.
• Improper grounding, poor ventilation, or unshielded fire or spark can create a danger of fire
or explosion. Therefore, the following precautions are strongly advised.
*All peripheral equipment and piping connected to this product should be properly
grounded.
*To pump flammable liquids, use a model with an aluminum or stainless-steel casing.
*Whenever you notice any spark while operating this product, immediately stop its
operation, and do NOT start using it again unless you are sure of the cause and corrective
actions have been taken.
*Depending upon the type of fluid being pumped, bubbles of flammable gas may be
generated. Make sure that ventilation is satisfactory.
*This product itself, its piping and exhaust ports should be kept away from unshielded fire,
spark and other causes of ignition. If a diaphragm is damaged, fluid will gush out together
with air from the exhaust port.
*Do NOT leave gasoline or solvent etc. that contains waste at the work site.
*Machinery and other equipment near the place of installation of this product should be
properly insulated to prevent conduction with each other.
*Do NOT operate heating devices that create flames or have heating filaments anywhere
near the pump or its piping.
*If there are flammable gases in the air while the pump is operating, do NOT switch electric
appliance on and off.
*Do NOT operate a gasoline engine at the work site.
*Restrict smoking at the work site.
• After you shut down the pump and disconnect the piping, some fluid may remain inside the
pump. Also, if the pump is left unused for a prolonged period, some fluid may remain inside
the pump and connected piping. Therefore, be sure to purge the system of fluid and clean the
pump before prolonged disuse. If the product is left unused for a prolonged period with fluid
remaining in the connected piping as well as the pump itself, the fluid may expand,
depending on the ambient temperature (because of freezing or heat), which may cause
damage to the pump and/or piping and possible leakage of fluid.
• Always use genuine Yamada parts when replacing component parts of this product. Do NOT
attempt to modify the components parts or replace them with other than genuine Yamada
parts.
• Torque of all tightening parts must be inspected before operation. Designated torque are
mentioned in maintenance manual.
