Pedrollo PRESFLO VARIO Electronic Pump Controller Instruction Manual

1. Introduction

The Pedrollo PRESFLO VARIO series Presscontrol is an advanced electronic control and protection system designed for water pumps used in both domestic and industrial water supply applications. This device automatically regulates water pressure within the system, ensuring optimal pump operation and safeguarding it from potential damage caused by overpressure or insufficient water supply.

The PRESFLO VARIO series Presscontrol is equipped with an integrated display, enabling real-time monitoring and precise adjustment of water pressure. Furthermore, it incorporates robust protection features to prevent pump failures resulting from dry running, overpressure conditions, excessive electrical overloads, and other common operational issues. Its combination of versatility and advanced functionalities establishes the Pedrollo PRESFLO VARIO series Presscontrol as a reliable and high-quality solution for effective water pressure management in various water supply systems.

2. Product Overview

Figure 1: Front view of the Pedrollo PRESFLO VARIO electronic pump controller. This image shows the grey unit with black threaded connections at the top and side. The front panel clearly displays the 'PEDROLLO' logo, 'PRESFLO VARIO' branding, and indicator lights for 'POWER', 'PUMP', 'PROTECTION', and 'START/STOP'. A red reset button is also visible on the right side of the panel.

3. Setup Instructions

1. Unpacking: Carefully remove the PRESFLO VARIO unit from its packaging. Inspect for any signs of damage during transit.
2. Mounting: Mount the unit in a vertical position, ensuring the flow direction arrows align with your water system. Secure it firmly to prevent vibration.
3. Hydraulic Connection: Connect the inlet of the PRESFLO VARIO to the pump outlet and the outlet of the PRESFLO VARIO to the system's water line. Use appropriate sealing materials (e.g., PTFE tape) on all threaded connections to ensure a watertight seal. Verify all connections for leaks after installation.
4. Electrical Connection: This device operates on 230V. All electrical connections must be performed by a qualified electrician in accordance with local electrical codes and regulations. Ensure the power supply is disconnected before making any connections. Connect the pump's power cable to the designated terminals on the PRESFLO VARIO and connect the PRESFLO VARIO to the main power supply.
5. Initial Priming: If your pump requires priming, ensure it is properly primed before starting the system. The PRESFLO VARIO will not operate correctly if the pump is dry.

4. Operating Instructions

1. Power On: Once all connections are secure, restore power to the unit. The 'POWER' indicator light on the display panel should illuminate.
2. System Start-up: The PRESFLO VARIO will automatically detect the system pressure. When water demand is detected (e.g., opening a tap), the unit will start the pump. The 'PUMP' indicator light will illuminate.
3. Automatic Operation: The unit continuously monitors water flow and pressure. When water demand ceases, the PRESFLO VARIO will stop the pump after a short delay, maintaining system pressure.
4. Pressure Adjustment: Refer to the specific model's user interface for instructions on adjusting the start-up pressure if this feature is available. The display provides real-time pressure readings.
5. Protection Features: The PRESFLO VARIO is designed to protect the pump from various conditions:
   • Dry Running: If the water supply to the pump runs out, the unit will detect a lack of flow and stop the pump, illuminating the 'PROTECTION' indicator. This prevents damage to the pump.
   • Overpressure/Overload: The unit monitors pump operation and will shut down the pump if it detects conditions that could lead to overpressure or electrical overload, again illuminating the 'PROTECTION' indicator.
6. Resetting the Unit: After a protection shutdown (e.g., dry running), rectify the underlying issue (e.g., restore water supply). Then, press the 'START/STOP' or 'RESET' button on the unit to restart operation.

5. Maintenance

The Pedrollo PRESFLO VARIO is designed for minimal maintenance. However, regular checks can ensure its longevity and reliable operation:

• Regular Inspection: Periodically inspect all hydraulic and electrical connections for any signs of leaks, corrosion, or loose wiring. Tighten connections as necessary.
• Cleaning: Keep the exterior of the unit clean and free from dust and debris. Use a soft, damp cloth for cleaning; avoid abrasive cleaners or solvents.
• Winterization (if applicable): In regions subject to freezing temperatures, ensure the unit and connected pump are adequately protected from frost. This may involve draining the system or insulating components.

6. Troubleshooting

• Pump Not Starting:
  • Check if the 'POWER' indicator is on. If not, verify the main power supply.
  • Check if the 'PROTECTION' indicator is on. If so, identify and resolve the protection trigger (e.g., no water, overload) and then press the reset button.
  • Ensure there is water demand (e.g., open a tap).
• Pump Not Stopping:
  • Check for leaks in the system, even small ones, as these can prevent the unit from detecting zero flow.
  • Ensure all taps and outlets are fully closed.
  • Verify that the non-return valve (if external) is functioning correctly.
• Low Pressure:
  • Check the water level in the source (well, tank).
  • Inspect for blockages in the suction line or pump impeller.
  • Ensure the pump itself is operating correctly.
• Error Codes: If the display shows specific error codes, consult the detailed technical manual or contact customer support for interpretation and resolution.

If problems persist after attempting these troubleshooting steps, it is recommended to contact a qualified technician or Pedrollo customer support.

7. Specifications

8. Warranty and Support

Information regarding specific warranty terms and customer support contacts for the Pedrollo PRESFLO VARIO electronic pump controller is not available in the provided product data. Please refer to the product packaging, the official Pedrollo website, or contact your point of purchase for detailed warranty information and technical support services.