4. Operation
4.1
Check items before test operation
4.1.1
Check
items related to the electrical system
Warning
Before changing the wiring, be sure to turn off the main power supply. Otherwise,
you may receive an electric shock.
Warning
Do not use the product at any voltage other than the rated value.
A fire or electric shock may occur.
(1) Check that the equipment is correctly wired.
(2) Check that the terminals are securely connected.
(3) Check that the equipment is securely grounded.
(4) Check that the setup value of the overload protection device is consistent with the rated current
value of the motor. The rated current of pump is indicated on the pump nameplate.
4.1.2 Check items related to the pump
Caution
Do not put a cover or a filter over the motor. The temperature may rise inside the
motor, thus leading to failures.
Caution
Do not allow a large amount of foreign matter to enter the pump. Failure to
observe this may cause damage to the sliding parts (e.g. bearings, mechanical
seal) inside the pump, leakage or unusual noise.
Caution
Ensure that a strainer is installed at the suction side of the pump (Recommended
strainer mesh: 40 mesh for normal use, 80 mesh for cleaning). Foreign matters
may enter the pump and cause damage to the sliding parts (e.g. mechanical seal)
in the pump, leakage or unusual noise.
(1) For the purpose of removing foreign substances, be sure to
close the sluice valve on the suction and discharge sides of the
pump to drain the water inside the pipes by natural drainage or
other methods.
(2) Check the rotation direction. Normal rotation is clockwise when
viewed from the motor side.
(See the right figure.)
Rotation direction
