PEDROLLO 2CPm 25/16B Electric Centrifugal Pump User Manual

1. Introduction

This manual provides essential information for the safe and efficient operation, installation, and maintenance of your PEDROLLO 2CPm 25/16B Electric Centrifugal Pump. Please read this manual thoroughly before operating the pump to ensure proper use and to prevent damage or injury.

Figure 1: PEDROLLO 2CPm 25/16B Electric Centrifugal Pump. This image shows the complete pump unit, featuring the blue pump body connected to the electric motor, designed for efficient fluid transfer.

2. Safety Information

Always observe the following safety precautions to reduce the risk of injury, electric shock, fire, or damage to the pump.

• Electrical Safety: Ensure the pump is connected to a properly grounded power supply. Do not operate with damaged cords or plugs. Disconnect power before any maintenance or service.
• Water Safety: Do not operate the pump dry. Ensure the pump is always primed before starting. Protect the pump from freezing temperatures.
• Installation: Install the pump on a stable, level surface. Ensure adequate ventilation around the motor. Use appropriate pipe fittings and sealants to prevent leaks.
• Personal Protective Equipment (PPE): Wear appropriate safety gear, such as gloves and eye protection, when handling the pump or performing maintenance.
• Children and Pets: Keep children and pets away from the pump during operation.

3. Product Components and Description

The PEDROLLO 2CPm 25/16B is a single-phase electric centrifugal pump designed for efficient water transfer. It features a cast iron pump body and a stainless steel crankshaft, ensuring durability and reliable performance.

• Power: 2 HP (1.5 kW)
• Max Flow Rate: 140 liters/minute (200 l/min)
• Max Head: 56 meters
• Max Suction Lift: 7 meters
• Suction Nozzle Diameter: 1 1/4 inch
• Discharge Nozzle Diameter: 1 inch

Figure 2: Internal Diagram of the Centrifugal Pump. This diagram illustrates the key internal components of the pump, showing the flow path and mechanical parts.

• 1. Pump Casing: The outer housing of the pump, typically made of cast iron, which contains the impeller and directs the fluid flow.
• 2. Discharge Port: The outlet through which the pumped fluid exits the pump.
• 3. Impeller: The rotating component with vanes that imparts kinetic energy to the fluid, increasing its velocity and pressure.
• 4. Motor Shaft: The rotating shaft that connects the motor to the impeller, transmitting power.
• 5. Mechanical Seal: Prevents fluid leakage along the motor shaft where it enters the pump casing.
• 6. Bearings: Support the rotating shaft, reducing friction and ensuring smooth operation.
• 7. Motor Stator: The stationary part of the electric motor that contains the windings, generating the magnetic field.
• 8. Motor Rotor: The rotating part of the electric motor, connected to the shaft, which interacts with the stator's magnetic field to produce torque.

4. Setup and Installation

4.1 Unpacking and Inspection

1. Carefully remove the pump from its packaging.
2. Inspect the pump for any visible damage that may have occurred during shipping. Report any damage to your supplier immediately.
3. Ensure all components listed in the packing list are present.

4.2 Mounting the Pump

1. Select a dry, well-ventilated location, protected from direct sunlight and freezing temperatures.
2. Mount the pump on a solid, level foundation to minimize vibration and noise. Use appropriate bolts to secure the pump through its base plate holes.
3. Ensure there is sufficient space around the pump for ventilation and future maintenance.

4.3 Plumbing Connections

1. Connect the suction pipe to the pump's inlet (1 1/4 inch) and the discharge pipe to the outlet (1 inch).
2. Use appropriate pipe thread sealant on all connections to prevent leaks.
3. Ensure that the piping is adequately supported to prevent strain on the pump connections.
4. Install a foot valve with a strainer at the end of the suction pipe if drawing water from a well or tank.

4.4 Electrical Connection

1. Ensure the power supply matches the pump's voltage requirements (230 VAC).
2. Connect the pump to a dedicated, properly grounded electrical circuit protected by a circuit breaker or fuse.
3. All electrical wiring should be performed by a qualified electrician in accordance with local electrical codes.

5. Operation

5.1 Priming the Pump

Before initial start-up or after the pump has been drained, it must be primed.

1. Remove the priming plug (if present) or open a valve on the discharge side.
2. Fill the pump casing completely with water until it overflows.
3. Replace the priming plug or close the valve.

5.2 Starting the Pump

1. Ensure the pump is properly primed.
2. Open any necessary valves on the suction and discharge lines.
3. Turn on the power supply to the pump. The pump should start immediately.
4. Monitor the pump for unusual noises or vibrations during the first few minutes of operation.

5.3 Shutting Down the Pump

1. Turn off the power supply to the pump.
2. Close any necessary valves on the suction and discharge lines to prevent backflow.

6. Maintenance

Regular maintenance ensures the longevity and optimal performance of your pump.

6.1 Routine Checks (Weekly/Monthly)

• Check for any leaks around the pump casing or pipe connections.
• Listen for unusual noises or vibrations during operation.
• Inspect the power cord for damage.
• Ensure the pump is adequately ventilated and free from debris.

6.2 Cleaning

• Periodically clean the exterior of the pump to prevent dirt buildup.
• If the pump is used with dirty water, regularly check and clean the strainer on the suction line.

6.3 Winterization/Storage

• If the pump will not be used for an extended period or in freezing temperatures, drain all water from the pump casing and pipes to prevent damage from ice expansion.
• Store the pump in a dry, protected area.

7. Troubleshooting

Refer to the table below for common issues and their potential solutions.

8. Technical Specifications

Detailed specifications for the PEDROLLO 2CPm 25/16B Electric Centrifugal Pump.

9. Warranty and Support

For product support, technical assistance, or warranty inquiries, please contact your authorized PEDROLLO dealer or the point of purchase. While specific warranty terms may vary by region and retailer, general return policies often allow for refund or replacement within 30 days of purchase, subject to the seller's terms and conditions.

Always refer to your purchase documentation for specific warranty details applicable to your product.

Manufacturer: PEDROLLO

For further assistance, you may visit the official PEDROLLO website or contact their customer service department.