In accordance with accident-prevention regulations, the pump must be operated only if the coupling (where provided) is suitably protected. The pump can therefore be started only after having checked that the coupling protections are correctly fitted. Do not start the pump without having completely filled it with liquid. Before starting up, check that the pump is properly primed; fill it completely with clean water by means of the hole provided after having removed the filler cap on the discharge body. This ensures that the mechanical seal is well lubricated and that the pump immediately starts to work regularly. The filler cap must then be put back in place. Dry operation causes irreparable damage to the mechanical seal and the stuffing box seal. Fully open the gate valve on intake and keep the one on delivery almost closed. Switch on the power and check that the motor is turning in the right direction, that is clockwise when viewed from the fan side, indicated also by the arrow on the fan cover. Otherwise invert any two phase leads, after having disconnected the pump from the mains. Once the hydraulic circuit has been completely filled with liquid, gradually open the delivery gate valve until its maximum opening. With the pump running, check the supply voltage at the motor terminals, which must not differ from the rated value by +/- 5%. With the unit at regular running speed, check that the current absorbed by the motor does not exceed the value on the data plate. We recommend you read the instruction manual of the KV 3, KV 6, KV 10 (also available in our DNA software) for all information on the product.
Was this FAQ helpful?
The direction of rotation may be inverted only in three-phase pumps. In single-phase pumps (230 volts) the motor always rotates in the correct direction. We recommend you read the instruction manual of the KV 3, KV 6, KV 10 (also available in our DNA software) for all information on the product. The direction of rotation must be clockwise when the pump is viewed from above. If it is turning in the wrong direction, invert two of the three phase leads.