1. Introducció i presentació del producteview
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. Informació de seguretat
Instruccions importants de seguretat: Seguiu sempre les precaucions bàsiques de seguretat per reduir el risc d'incendi, descàrrega elèctrica i lesions personals.
- Ensure the power supply matches the pump's specifications (220V single-phase).
- Desconnecteu sempre l'alimentació abans de realitzar qualsevol manteniment o instal·lació.
- No feu funcionar la bomba amb cables o endolls danyats.
- Protegiu la bomba de les temperatures de congelació.
- Assegureu-vos de posar a terra adequadament per evitar descàrregues elèctriques.
- Do not pump flammable or corrosive liquids. This pump is designed for clean water only.
- Mantingueu els nens i les persones no autoritzades allunyats de la bomba en funcionament.
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.
Components clau:
- Cos de la bomba: Constructed from cast iron, capable of withstanding service pressures up to 10 bars.
- Impulsor: Made of AISI 304 INOX for durability and efficient water handling.
- Ejector Diffuser: Manufactured from NORYL.
- Llanterna: Aluminum construction with an inox pump bottom.
- Motor elèctric: 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. Especificacions tècniques
| Especificació | Valor |
|---|---|
| Fabricant | Pedrollo |
| Model de referència | JSWM3CM |
| Poder | 1.10 kW |
| Caudal | 0 a 7.2 m³/h |
| Head (HMT) | de 20 a 54 metres |
| Font d'alimentació | 220V monofàsica |
| Velocitat del motor | 2900 rpm |
| Classificació de protecció | IPX4 |
| Classe d'aïllament | F |
| Continuous Service Type | S1 |
| Material del cos de la bomba | Ferro colat |
| Material del rodet | AISI 304 INOX |
| Pes | 31 quilos |
5. Instal·lació (Configuració)
Proper installation is critical for the pump's performance and longevity. Follow these guidelines carefully.

Figura 3: Example 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.
- Ubicació: Install the pump in a dry, well-ventilated area, protected from direct sunlight, rain, and freezing temperatures. Ensure sufficient space for maintenance.
- Muntatge: Securely mount the pump on a stable, level surface using appropriate bolts to minimize vibration.
- Línia d'aspiració:
- 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.
- Línia de descàrrega: Connect the discharge pipe to the pump's outlet. Install a gate valve on the discharge side to regulate flow and facilitate maintenance.
- Connexió elèctrica:
- 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.
- All electrical connections must be performed by a qualified electrician in accordance with local regulations.
- Cebament: Before first use, fill the pump casing completely with clean water through the priming port until it overflows. Replace the priming plug securely.
6. Funcionament
Once installed and primed, the pump is ready for operation.
- Inici de la bomba:
- 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.
- Seguiment: Observe the pump during operation for any unusual noises, vibrations, or leaks.
- Aturar la bomba:
- Tanqueu la vàlvula de descàrrega.
- Switch off the power supply to the pump.
- Funcionament continu: The pump is designed for continuous S1 service, meaning it can operate continuously under a constant load.
7. Característiques de rendiment
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. Manteniment
Un manteniment regular garanteix un rendiment òptim i allarga la vida útil de la bomba. Desconnecteu sempre l'alimentació abans del manteniment.
- Comprovacions periòdiques:
- Inspect the pump and piping for leaks.
- Check electrical connections for signs of wear or corrosion.
- Listen for unusual noises during operation.
- Neteja: Periodically clean the pump's exterior to prevent dust and debris buildup, which can affect cooling.
- Foot Valve/Strainer: Regularly inspect and clean the foot valve strainer to prevent blockages and ensure proper water intake.
- Hivernització: Si la bomba està exposada a temperatures de congelació, buideu tota l'aigua de la bomba.asing and piping to prevent damage from ice expansion.
- Segell mecànic: 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. Solució De Problemes
Aquesta secció ofereix solucions a problemes comuns que podeu trobar. Per a problemes que no figuren aquí, poseu-vos en contacte amb personal de servei qualificat.
| Problema | Causa possible | Solució |
|---|---|---|
| La bomba no arrenca | No power supply; Thermal overload tripped; Motor fault. | Check power connection and circuit breaker; Allow motor to cool and reset; Consult a technician. |
| La bomba funciona però no subministra aigua | 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. |
| Baix flux o pressió | 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. |
| Excés de soroll o vibració | 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. Garantia i Suport
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.





