1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of your Pedrollo 2CP Twin Impeller Electric Water Pump, model 2CPm25/16C. Designed for high efficiency and adaptability, this pump is ideal for various applications including domestic, civil, and industrial water supply systems, pressure boosting, and fire-fighting sets. It is suitable for use with clean water and liquids that are not chemically aggressive to the pump's materials.
Please read this manual thoroughly before installation and operation to ensure proper use and to prevent damage or injury.
2. Safety Information
WARNING: Failure to follow these safety instructions could result in electric shock, fire, serious injury, or death.
- Always disconnect the pump from the power supply before performing any installation, maintenance, or repair work.
- Ensure the electrical installation complies with all local and national electrical codes. The pump requires a single-phase 230V 50Hz power supply.
- The pump must be installed in a closed environment or adequately protected from adverse weather conditions (rain, direct sunlight, frost).
- Do not operate the pump with liquids outside the specified temperature range (-10°C to +90°C).
- Ensure the ambient temperature remains within -10°C to +40°C during operation.
- Never run the pump dry. Dry running can cause severe damage to the pump.
- Keep children and unauthorized personnel away from the pump during operation.
- Do not exceed the maximum working pressure of 10 bar.
3. Product Overview
The Pedrollo 2CPm25/16C is a twin-impeller centrifugal pump designed for efficient water handling. Below is an image illustrating the key components of the pump.
Figure 1: Pedrollo 2CP Twin Impeller Electric Water Pump. This image shows the robust blue cast iron pump body with its distinctive twin-impeller design on the left, featuring the aspiration port. To the right, the electric motor housing is visible with cooling fins and the electrical connection box on top. The pump is mounted on a stable base.
Key Components:
- Pump Body: Constructed from durable Cast Iron.
- Impeller: Made of Brass, designed for efficient water movement.
- Motor: Electric motor providing 1.5 Hp (1.1 kW) power.
- Aspiration Port: 1¼" inlet for water intake.
- Outlet Port: 1" outlet for water discharge.
- Electrical Connection Box: For secure power wiring.
4. Setup and Installation
Proper installation is crucial for the pump's performance and longevity.
4.1 Location
- Install the pump in a dry, well-ventilated area.
- The location must be protected from frost, direct sunlight, and excessive humidity.
- Ensure sufficient space around the pump for ventilation and future maintenance.
- Mount the pump on a solid, level surface to minimize vibration.
4.2 Plumbing Connections
- Connect the suction pipe to the 1¼" aspiration port and the discharge pipe to the 1" outlet port.
- Use appropriate fittings and sealants to ensure all connections are airtight and watertight.
- Install a foot valve with a strainer at the end of the suction pipe if drawing water from a well or tank to prevent debris from entering the pump and to maintain prime.
- Consider installing isolation valves on both suction and discharge lines for easier maintenance.
4.3 Electrical Connection
- The pump requires a single-phase 230V, 50Hz power supply.
- All electrical wiring must be performed by a qualified electrician and comply with local regulations.
- Ensure the power cable is adequately sized for the pump's power requirements (1.1 kW / 1.5 Hp).
- Connect the pump to a dedicated circuit protected by a residual current device (RCD) for safety.
- Verify that the voltage and frequency of the power supply match the pump's specifications.
4.4 Priming the Pump
Before initial startup, the pump must be primed to ensure it is filled with water and can create suction.
- Close the discharge valve.
- Remove the priming plug (usually located on top of the pump casing).
- Slowly fill the pump casing with clean water until it overflows from the priming hole.
- Replace and tighten the priming plug.
- Open the discharge valve before starting the pump.
5. Operating Instructions
Once installed and primed, the pump is ready for operation.
5.1 Initial Startup
- Ensure all connections are secure and there are no leaks.
- Verify the pump is properly primed.
- Turn on the power supply to the pump. The pump should start immediately.
- Monitor the pump for any unusual noises or vibrations during the first few minutes of operation.
- Check for consistent water flow and pressure.
5.2 Normal Operation
- The pump is designed for continuous service (S1), meaning it can operate continuously without interruption under normal conditions.
- Avoid running the pump dry, as this can cause severe damage to the mechanical seal and impellers.
- Regularly check the pressure gauges (if installed) to ensure the pump is operating within its specified head and flow rate.
5.3 Shutting Down
- To stop the pump, simply turn off the power supply.
- For extended periods of non-use, especially in freezing temperatures, drain the pump completely to prevent damage from ice expansion.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your pump.
6.1 Routine Checks
- Daily: Check for any visible leaks around connections or the pump body. Listen for unusual noises.
- Weekly/Monthly: Inspect the electrical connections for signs of wear or corrosion. Ensure the pump's ventilation fins are clear of debris.
- Annually: Have a qualified technician inspect the pump's internal components, including impellers and mechanical seals, for wear.
6.2 Cleaning
- Keep the exterior of the pump clean and free of dust and dirt to ensure proper heat dissipation from the motor.
- If a strainer is used on the suction line, clean it regularly to prevent clogging and maintain flow.
6.3 Winterization (for non-continuous use in cold climates)
- Disconnect power to the pump.
- Drain all water from the pump casing and piping to prevent freezing damage. This can be done by opening drain plugs (if present) or disconnecting pipes.
- Store the pump in a dry, frost-free environment if it is to be removed from service for the winter.
7. Troubleshooting
This section provides solutions to common issues you might encounter.
| Problem | Possible Cause | Solution |
|---|---|---|
| Pump does not start | No power supply Motor overload Seized impeller | Check power connection, circuit breaker/fuse Reset thermal overload protector; check for blockages Contact qualified technician |
| Pump runs but no water flow | Pump not primed Air leak in suction line Clogged suction strainer/pipe Low water level at source | Re-prime the pump Check all suction connections for leaks Clean strainer and check pipe for obstructions Ensure adequate water supply |
| Low flow or pressure | Partial clog Air in system Worn impeller/components Incorrect pipe sizing | Check for partial blockages in pipes or pump Bleed air from the system; check for suction leaks Contact qualified technician for inspection Consult plumbing professional |
| Excessive noise or vibration | Cavitation (air in pump) Loose mounting Bearing wear Debris in pump | Ensure pump is fully primed and no air leaks Tighten mounting bolts Contact qualified technician Disconnect power and inspect pump interior (if safe to do so) |
If you are unable to resolve the issue using this guide, please contact a qualified technician or Pedrollo customer support.
8. Specifications
Detailed technical specifications for the Pedrollo 2CPm25/16C pump.
| Parameter | Value |
|---|---|
| Model | 2CPm 25/16C |
| Power Supply | Single phase 230V 50Hz |
| Power (kW) | 1.1 kW |
| Power (Hp) | 1.5 Hp |
| Flow Rate (Q L/min) | 20 ÷ 120 L/min |
| Head (H Metres) | 46 ÷ 24 Metres |
| Aspiration Port Size | 1¼" |
| Outlet Port Size | 1" |
| Pump Body Material | Cast Iron |
| Impeller Material | Brass |
| Liquid Temperature Range | -10°C to +90°C |
| Ambient Temperature Range | -10°C to +40°C |
| Manometric Suction Lift (max) | 7 m |
| Max. Working Pressure | 10 bar |
| Continuous Service | S1 |
| Item Weight | 15 kg |
| Manufacturer | Pedrollo |
| Power Source | Electric with cord |
9. Warranty and Support
For warranty information, please refer to the documentation provided at the time of purchase or contact your authorized Pedrollo dealer or the manufacturer directly. Pedrollo products are known for their quality and reliability, and specific warranty terms may vary by region and seller.
For technical support, spare parts, or service, please contact your local Pedrollo distributor or the seller from whom you purchased the pump. Ensure you have your pump's model number (2CPm25/16C) and serial number (if applicable) ready when contacting support.
You can find more information and contact details on the official Pedrollo website: www.pedrollo.com
