23
O
p
e
ra
tion
Before operation
This section describes pump operation and programming. Run the pump
after pipework and wiring are completed.
Before operation
Always check the following items before the first-time operation or resuming operation after a
long period of stoppage.
Points to be observed
Observe the following points during operation:
•
The pump should be handled or operated by qualified personnel with a full understand-
ing of the pump. Any person not familiar with the product should not take part in the
operation or maintenance of the pump.
•
Risk of burning. The surface temperature of the pump or motor rises up to 80ºC in or
right after operation.
•
Do not close a discharge line during operation. Otherwise, liquid leakage or pump head/
motor/piping breakage may result due to overpressure.
•
Do not close a suction line during operation. Otherwise, internal parts are excessively
worn by friction heat and fatal pump damage results.
• Risk of electrical shock. Be sure to turn off power to stop the pump and related devices
before service is performed.
•
Check for transit damage, loose bolts and an oil leak.
• Check the motor rated voltage corresponds to the power voltage supplied to the inverter
. See motor name-
plate.
•
Electrical wiring must be correct. See the "Wiring" section on page 21 and inverter manufacturer's manual.
•
Check a liquid level in the supply tank.
•
Check if the discharge and suction lines are laid correctly.
• Check the oil gauge on the driven unit. An oil level should be at the middle of the gauge (marked in red).
Operation
Red mark
