ENGLISH
9
KIVU PUMP
- ASTRALPOOL
• Adjust the thermal value according to the thermal protection table. For the connection
∆
(3 x 230 V network), use the protection
with the highest indicated value. For the connection
Υ
(3 x 400 V network), use the protection with the lowest indicated value.
• Connect the lowest voltage at
∆
and the highest at
Υ
for voltage intervals other than 230/400 V; 400/690 V.
• For AC, use a H07 RN-F3 type connection sleeve with a cable section that adapts to the power of the motor and the
length of the cable.
• The mains cable may only be connected by skilled, authorised personnel.
VARIABLE FREQUENCY DRIVE
• These pumps are suitable for use with a variable frequency drive.
• It is recommended that you work within the limits of 20Hz to 50Hz.
• For more information, contact the supplier of the variable frequency drive.
8. START-UP INSTRUCTIONS
PRIOR TO START-UP
- Carry out the following operations before starting the pump:
1. Remove the pre-filter cap by unscrewing the nut holding it in place.
2. Fill the pump with water through the pre-filter until it rises up through the suction pipe.
3. Should the basket be removed during these operations, do not forget to replace it to prevent large particles from
entering the pump that could block it.
4. Fit the pre-filter cap and screw on tight, not forgetting to fit the seal in its housing.
5. Check that the mains voltage and frequency correspond with those indicated on the pump characteristics plate.
- The pumps must not be run without the pre-filter having first been filled with water. Where this is not the case, the
mechanical gasket may be damaged, leading to a loss of water.
- Check that the motor rotates in the correct direction by means of the fan located at the back of the motor that can be seen
through the view hole on the fan cover.
START-UP
- Open all the valves and connect the motor.
- Activate the self-priming and wait a reasonable time for this to be completed.
- The PUMP MUST NEVER FUNCTION WHEN IT IS DRY. The pump must not be started when it is dry as this would cause
damage to its mechanical seal, causing water leaks.
- The pump cannot function against a closed valve as this will cause an increase in the temperature and formation of
steam in the pump, which could cause it damage.
MINIMUM PRESSURE -NPSHr /CAVITATION
- The minimum suction pressure depends on the flow rate and power of the Kivu pump. See NPSHr graphs.
- If the pump does not have the minimum pressure required, it can cavitate. Steam would cause vibrations that would
damage the moving parts of the pump (impeller, mechanical seal, bearings) and fixed parts (flange, diffuser, volute).
- To avoid the effect of cavitation in the pump, ensure that the minimum pressure at the inlet of the pump is that required
in the NPSHr graph.
