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Ascento Group Australia
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AI.062020
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CHECKING THE DIRECTION OF ROTATION (THREE PHASE PUMPS ONLY)
The direction of rotation should be checked every time the pump is connected to a new installation.
Check the direction of rotation as follows:
At all times keep fingers and hands away from impeller.
1 Position the pump so that the impeller can be observed.
2 Start the pump momentarily, pump will jerk - be careful
3 Observice the rotation of the impeller. The correct direction of the rotation is indicated by an arrow on the top of the motor (anticlockwise when seen from
the bottom.) If the impeller rotates in the wrong direction, reverse the direction of rotation by interchanging two phases of the motor.
If the pump is connected to a piping system, the direction of rotation can be checked as follows:
1 Start the pump and check the quantity of water or the discharge pressure.
2 Stop the pump and interchange two of the phases to the motor
3 Start the pump and check the quantity of water or the discharge pressure.
4 Stop the pump
5 Compare the results taken under point 1 and 3. The connection which gives the larger quantity of water or the higher pressure is the correct direction of
rotation.
OPERATION
BEFORE STARTING
1 Make sure once again that the product is of the correct voltage and frequency rating
CAUTION
Using the product with a voltage and frequency other than the rated voltage frequency will not only lower its performance but damage the product.
NOTE: Confirm the rated voltage and frequency on the model name plate.
2 Confirm the wiring, supply voltage, circuit breaker capacity, and motor insulation resistance.
Reference insulation resistance: 20 or greater.
NOTE: The reference insulation resistance (20 or greater) is the value when the pump is new or has been repaired.
3 The setting on the circuit breaker or other overload protector should be made in accord with the rated currency of the pump.
NOTE: See the model name plate on the pump for its rated current.
WARNING
TEST OPERATION
•
Never operate the pump while it is suspended in the air. The recoil will result in injury, property damage or death.
1 Run the pump for a short time (3-10 minutes) and confirm the following:
•
Using an ammeter (clamp-on type), measure the operating current at the L1, and L2 phase leads on the terminal.
Countermeasure: If the operating current exceeds the rated value, pump motor overload may be a cause, or there may be insufficient back pressure. Make
sure the pump has been installed under proper coniditons as described in installation (page 5.)
•
Using an AC voltmeter (tester), measure voltage at the terminals.
Supply voltage tolerance: 5% of rated voltage.
Countermeasure: If the supply voltage is outside the tolerance, possible causes are the power supply capacity or an inadequate extension cable. Look again
at Electrical Wiring and make sure the conidtions are proper.
CAUTION
•
In case of very excessive vibration, unusual noise or odour, turn off the power immediately and consult with your nearest dealer or representative.
Continuing to operate the pump under abnormal conditions may result in electrical shock, fire property damage injury or death.
2 If the test operation reveals no problems, continue operating the pump.
WARNING
•
Do not operate the pump in dry pit, well, trench etc.
•
The pump may become very hot during operation. To avoid being burned, be careful not to contact the pump accidentally
•
Make sure no extraneous objects such as pins, nails, or other metal objects, cloth wipes, rocks, wood, napkins or sanitary items or products of this
nature are sucked into the pump.
These can damage the pump or cause it to malfunction, and can result in electrical shock or electrical leakage
•
In case of a power outage, turn off the power to the pump to avoid having it start unexpectedly when the power is restored, presenting serious danger
to people in the vicinity.
•
Pay careful attention to the water level while the pump is operating. Dry operation may cause the pump to malfunction.
NOTE: See page ..., “Operating Water LEvel” for water level necessary for operation
•
Sharp bends in the hose, especially near it’s base may cause air pockets to form resulting in idle operation. Lessen the degree of bending while con-
tinuing to operate the pump.
CAUTION
Do not operate the pump below C.W.L (Continuous running water level.) Failure to observe this condi-
tion may result in damage to pump, electrical leakage or electrical shock.