PS (3-Phase) Series Operation
wc_tx000131gb.fm 21
Operation
The pump may be extremely hot during operation. To prevent burns,
do not touch the pump with bare hands.
Do not insert your finger or a stick into the pump’s inlet opening. Doing
so may cause injury, electrical shock, short, or fire.
When the pump is not used for a long time, make sure that the power
supply (such as a breaker) is properly disconnected. If the wiring
insulation deteriorates with the power supply connected, it may cause
current leakage, electrical shock, or fire.
Pay attention to the water level during the pump operation. The pump
will become damaged if it is allowed to operate dry.
Note:
Refer to “Water Level During Operation” at the end of this
section.
The pump is equipped with an internal motor protective device (circle
thermal protector).
Motor Protector
During inspection and repair, disconnect the power supply to avoid
starting the pump unintentionally. Failure to disconnect the power
supply may lead to serious accidents including electrical shock, a
short, and injury.
During a power outage, disconnect the power supply to the pump.
Unintentional operation of the pump after power resumption would be
extremely dangerous to people around the pump.
Unless the cause of a problem is removed, the pump will repeat the
stop-and-go cycle, eventually resulting in damage to the pump, and
causing current leakage and electrical shock. Therefore, after verifying
that the power supply is disconnected, find and correct the cause of the
problem through inspection and repair.
DO NOT operate the pump at unusually low head, or when the strainer
is clogged with debris. Doing so will prevent the pump from attaining
its full potential, and may also generate abnormal noise and vibration
and cause damage to the pump, which may lead to current leakage,
electrical shock, and fire.
To protect the motor, if a current overload occurs in the motor or if the
motor overheats under the conditions given below, the pump will stop
automatically, regardless of the water level during operation.
• Extreme fluctuation of power supply voltage
• Pump operated under overload condition
• Pump operated at open phase or binding condition
CAUTION
WARNING
CAUTION
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