Two ways to check the correct pump rotation
1. By looking at the impeller; the rotation of
the impeller should be counter clockwise
as shown in the picture(1) on the right.
(1)
2. By looking from the top of the pump.Since
the impeller can not be seen,the best way to
check the rotation is check the kick back
motion of the pump when the pump just
starts.The kick back motion of the pump
should be counter clockwise as shown in
the picture (2) on the right.
(2)
Note: For TBZE,you should use a screwdriver
metal body so that the water level
sensor probe and guide rod connected,
otherwise the pump can not start.
To reverse the rotation about three phase, the
following countermeasure must be taken.
Interchange two of the three wires designated U,
1minutes) and perform the following checks:
Operating current
Use an AC ammeter (clamp), measure the current at the phase U, V, and W that
are connected to the terminal board.
Operation voltage
Use an AC voltmeter (tester) to measure the voltage at the terminal board.
Power supply voltage tolerance = within ±10% of the rated voltage.
Vibration
If the pump generates a considerable amount of vibration, noise, or
smell, disconnect the power supply immediately and contact the
dealer where you purchased the equipment or the
Solidpump sales
Continue operations if no abnormal conditions are found during the trial operation.
(3) Operation
WARNING:
The pump may be extremely hot during operation. To prevent burns, do
not touch the pump with bare hands.
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.
WARNING:
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, 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.
CAUTION:
Unles s the cause of a p roblem is re mo v ed, 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.
(4)Motor
protection
system
1. Circle thermal protector
The TBZ pump( 11kW) is equipped with an internal motor protective
device (circle thermal protector).
If an excessive current is detected or the motor overheats, for reasons such as
the following, the pump will automatically stop operating regardless of the
water level, to protect the motor
Change in supply voltage polarity
Overload
Open-phase operation or operation under constraint
17 18
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