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9 Handling Instructions
● Handle the pump carefully.
A strong impact caused by
dropping the pump on the
floor, striking it, etc., may
result in faulty performance or
damage to the pump.
●
The pump is not self-prim-
ing type.
Before operating
the pump, be sure to fill the
pump with liquid by operating
priming.
Caution!
●
Do not operate the pump
dry or with the discharge or
suction side closed.
If this
is done, the gears and bearings
will be worn out. Particularly,
if the pump is operated with
the discharge side closed, the
discharge pressure will be
increased and the relief valve
will be activated. This will
cause the liquid to circulate
in the pump chamber. If this
happens the temperature will
rise rapidly, causing abnormal
wear, seizure, etc., between
contacting parts.
■ Handling Instructions
●
The pump structure is not
designed to be dust-proof
or water-proof.
Try not to
wet or dampen the motor unit.
● For the prevention of elec-
tric shock accident, be sure
to purchase an optional
earth leakage breaker and
install it in the system.
●
Grounding must be set with
the use of a grounding wire.
For the prevention of electric
shock, it is recommended that
an earth leakage breaker also
be installed.
●
Do not cover the motor unit
tightly with a cover, etc.
Avoid operating the pump at
an ambient temperature above
40
º
C. The relative humidity
should be below 90%. Do
not splash water on the motor.
This may cause an electrical
short or burning.
Electrical Shock
