1. Introduzione e descrizione del prodottoview
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Pedrollo JSWM3CM single-phase 220V water pump. Please read this manual thoroughly before installation and use to ensure proper function and longevity of the product.

Figure 1: Pedrollo JSWM3CM Water Pump. This image shows the complete assembly of the Pedrollo JSWM3CM water pump, highlighting its compact design and robust construction.
The Pedrollo JSWM3CM is a self-priming surface pump designed for handling clean liquids with low sediment content. It is suitable for various applications including domestic water supply, agricultural irrigation, and light industrial use. Key features include a durable AISI 304 INOX impeller and a high-efficiency IE3 class electric motor.
2. Informazioni sulla sicurezza
Istruzioni importanti per la sicurezza: Seguire sempre le precauzioni di sicurezza di base per ridurre il rischio di incendio, scosse elettriche e lesioni personali.
- Ensure the power supply matches the pump's specifications (220V single-phase).
- Scollegare sempre l'alimentazione prima di effettuare qualsiasi operazione di manutenzione o installazione.
- Non utilizzare la pompa con cavi o spine danneggiati.
- Proteggere la pompa dalle temperature gelide.
- Garantire un'adeguata messa a terra per evitare scosse elettriche.
- Do not pump flammable or corrosive liquids. This pump is designed for clean water only.
- Tenere i bambini e le persone non autorizzate lontano dalla pompa in funzione.
3. Product Components and Design
The JSWM3CM pump is engineered for reliability and performance. Understanding its main components is crucial for proper installation and maintenance.

Figure 2: Internal Components of the Pedrollo JSWM3CM Pump. This diagram illustrates the key internal parts of the pump, including the pump body, impeller, motor, and shaft, providing insight into its robust construction.
Componenti chiave:
- Corpo pompa: Constructed from cast iron, capable of withstanding service pressures up to 10 bars.
- Girante: Made of AISI 304 INOX for durability and efficient water handling.
- Ejector Diffuser: Manufactured from NORYL.
- Lanterna: Aluminum construction with an inox pump bottom.
- Motore elettrico: 2900 rpm, IPX4 protection rating, Class F insulation, S1 continuous service. Features an IE3 class for high efficiency and low power consumption. Includes integrated thermal protection for safety.
- Coupling Shaft: Made of INOX EN 10088-3 - 1.4104.
4. Specifiche tecniche
| Specificazione | Valore |
|---|---|
| Produttore | Pedrollo |
| Riferimento modello | JSWM3CM |
| Energia | 1.10 kW |
| Portata | Da 0 a 7.2 m³/ora |
| Head (HMT) | Da 20 a 54 metri |
| Alimentazione elettrica | Monofase 220V |
| Velocità del motore | 2900 giri al minuto |
| Grado di protezione | Grado di protezione IPX4 |
| Classe di isolamento | F |
| Continuous Service Type | S1 |
| Materiale del corpo della pompa | Ghisa |
| Materiale della girante | AISI 304 INOX |
| Peso | 31 chilogrammi |
5. Installazione (configurazione)
Proper installation is critical for the pump's performance and longevity. Follow these guidelines carefully.

Figura 3: Esample Installation Diagram. This illustration demonstrates a typical setup for the Pedrollo pump, showing the suction height (HS) and the placement of a non-return valve for optimal performance.
- Posizione: Install the pump in a dry, well-ventilated area, protected from direct sunlight, rain, and freezing temperatures. Ensure sufficient space for maintenance.
- Montaggio: Securely mount the pump on a stable, level surface using appropriate bolts to minimize vibration.
- Linea di aspirazione:
- The pump is self-priming and recommended for drawing water from depths of less than 9 meters.
- Use a rigid, airtight suction pipe with a diameter equal to or larger than the pump's suction port.
- Install a foot valve with a strainer at the end of the suction pipe to prevent debris entry and maintain prime.
- Ensure the suction line slopes upwards towards the pump to avoid air pockets.
- Linea di scarico: Connect the discharge pipe to the pump's outlet. Install a gate valve on the discharge side to regulate flow and facilitate maintenance.
- Collegamento elettrico:
- Connect the pump to a single-phase 220V power supply.
- Ensure the electrical circuit is protected by a suitable circuit breaker and residual current device (RCD).
- The motor has built-in thermal protection, but additional external protection is recommended for critical applications.
- Tutti i collegamenti elettrici devono essere eseguiti da un elettricista qualificato, nel rispetto delle normative locali.
- Primerizzazione: Before first use, fill the pump casing completely with clean water through the priming port until it overflows. Replace the priming plug securely.
6. Funzionamento
Una volta installata e innescata, la pompa è pronta per funzionare.
- Avvio della pompa:
- Ensure the pump is fully primed.
- Open the discharge valve partially or fully.
- Switch on the power supply to the pump. The pump should start immediately and begin pumping water.
- Monitoraggio: Observe the pump during operation for any unusual noises, vibrations, or leaks.
- Arresto della pompa:
- Chiudere la valvola di scarico.
- Interrompere l'alimentazione elettrica della pompa.
- Funzionamento continuo: The pump is designed for continuous S1 service, meaning it can operate continuously under a constant load.
7. Caratteristiche delle prestazioni
The performance of the Pedrollo JSWM3CM pump is characterized by its flow rate (Q) and total head (HMT). Refer to the performance curve diagram for detailed information.

Figure 4: Performance Curves for JSW3 Series Pumps. This graph illustrates the relationship between flow rate (Q) and total head (HMT) for various models within the JSW3 series, including the JSWM3CM, at 50 Hz and 2900 rpm.
The graph shows how the pump's head (pressure) decreases as the flow rate increases. Locate the curve corresponding to the JSWM3CM model to understand its specific operating range. The pump delivers a flow rate between 0 and 7.2 m³/h and a head between 20 and 54 meters, depending on the operating point.
8. Manutenzione
Regular maintenance ensures optimal performance and extends the pump's lifespan. Always disconnect power before maintenance.
- Controlli regolari:
- Inspect the pump and piping for leaks.
- Check electrical connections for signs of wear or corrosion.
- Prestare attenzione a rumori insoliti durante il funzionamento.
- Pulizia: Periodically clean the pump's exterior to prevent dust and debris buildup, which can affect cooling.
- Valvola di fondo/filtro: Regularly inspect and clean the foot valve strainer to prevent blockages and ensure proper water intake.
- winterization: If the pump is exposed to freezing temperatures, drain all water from the pump casing and piping to prevent damage from ice expansion.
- Tenuta meccanica: The mechanical seal is a wear part. If persistent leaks occur from the shaft area, the seal may need replacement by a qualified technician.
9. Risoluzione Dei Problemi
Questa sezione fornisce soluzioni ai problemi più comuni che potresti riscontrare. Per problemi non elencati qui, contatta personale di assistenza qualificato.
| Problema | Possibile causa | Soluzione |
|---|---|---|
| La pompa non si avvia | No power supply; Thermal overload tripped; Motor fault. | Check power connection and circuit breaker; Allow motor to cool and reset; Consult a technician. |
| La pompa funziona ma non viene erogata acqua | Pump not primed; Air leak in suction line; Suction lift too high; Foot valve clogged. | Re-prime the pump; Check suction line for leaks and tighten connections; Reduce suction depth; Clean foot valve strainer. |
| Bassa portata o pressione | Partial blockage in suction/discharge; Air in system; Worn impeller; Incorrect pipe sizing. | Check for blockages; Bleed air from system; Inspect impeller for damage; Verify pipe diameters. |
| Rumore o vibrazioni eccessivi | Cavitation (air in water); Unsecured mounting; Bearing wear; Debris in pump. | Ensure proper priming and no air leaks; Securely mount pump; Consult technician for bearing/debris. |
10. Garanzia e supporto
Information regarding specific warranty terms and conditions for the Pedrollo JSWM3CM pump is typically provided at the point of purchase or within separate warranty documentation. Please refer to your purchase receipt or contact your supplier for details.
For technical support, spare parts, or professional servicing, please contact an authorized Pedrollo service center or your product retailer. Always provide the model number (JSWM3CM) and serial number (if applicable) when seeking support.





