Control unit PC-59 with pressure gauge

Product detailed description

The IBO PC-59 control unit with pressure gauge is commonly used in residential and commercial water supply systems where automated pump control is essential. Installers working with submersible pumps, borehole pumps or surface pumps often integrate this device to ensure stable and safe operation. It is suitable for applications such as well pumping stations, irrigation systems or domestic water boosting solutions where dry-run conditions can occur. This unit allows for remote monitoring of system pressure while providing automatic pump activation and deactivation based on demand and system load.

Installers should consider the system’s hydraulic characteristics when selecting the control unit. It is typically mounted between the pump and the first point of withdrawal, aligned with the flow direction indicated on the device. Careful planning of the control unit’s position ensures minimal interference with the system’s performance and long-term reliability.

Technical parameters

The operational range of the PC-59 covers starting pressures from 0 to 6 bar and shut-off pressures up to 10 bar. These values help determine whether the unit is suitable for a given pump and system configuration. The maximum allowable pressure difference between start and stop settings is 7 bar. For systems with higher pressure outputs, an external pressure-reducing valve must be fitted before the unit to avoid overpressure damage. The control unit is factory-set to 1.5 bar, which is appropriate for most standard water supply applications.

Installation and connection

• Mount the unit between the pump and the first point of withdrawal, ensuring the flow arrow on the body matches the actual flow direction.
• Use 1-inch male and female threaded fittings (G1”) for secure and leak-free connections.
• Ensure all pipe joints are properly sealed using appropriate gaskets or thread sealant.
• If the pump generates more than 6 bar, install a pressure-reducing valve upstream of the PC-59 to protect against overpressure.
• Connect the supplied cables to the power supply and pump according to the wiring diagram provided in the documentation.
• Verify that the unit is positioned in a location free from direct exposure to rain or extreme temperatures.

Common installation errors include incorrect orientation of the flow arrow, improper sealing of pipe connections and failure to adjust pressure settings after installation. These mistakes can lead to frequent pump cycling, reduced efficiency or system downtime. Always double-check the alignment and sealing during setup.

Compatibility and accessories

The PC-59 is compatible with most electric water pumps that operate within 220–240 V and draw up to 10 A. It supports integration with pressure vessels for enhanced automation or standalone use in systems without such tanks. For systems with high-pressure output, a pressure-reducing valve must be added separately. Additionally, a filter should be installed upstream if the water contains impurities or sediments to prevent clogging and premature wear of the internal components.

Technical background for designers

The PC-59 operates by monitoring both pressure and flow conditions in the system. When the pressure drops due to water usage, the unit activates the pump. Once the system reaches the set pressure threshold, the pump is turned off. The unit also detects low or zero flow conditions, which indicate potential dry-run situations, and stops the pump accordingly. This helps extend the lifespan of the pump and prevents mechanical damage caused by overheating or cavitation. The internal diaphragm responds to pressure variations, while the electronic circuit controls the switching process and delay functions to reduce unnecessary pump starts.

The housing is made of durable, corrosion-resistant materials suitable for outdoor or semi-outdoor environments. The IP65 rating ensures protection against dust and water jets from any direction. The unit integrates seamlessly with both open and closed-loop water systems, making it a flexible option for a wide range of applications. Its design allows for adjustments to starting and stopping pressure thresholds, giving engineers greater control over system behavior and energy consumption.

Service and operation

Regular checks of the pressure gauge and electrical connections are recommended to ensure optimal performance. Any signs of leakage around the fittings or irregular pump behavior should prompt further investigation. The unit does not require scheduled maintenance beyond visual inspections and cleaning of the exterior. If the unit shuts down due to dry-run detection, it can be manually reset using the reset button after correcting the underlying issue, such as refilling the water source or clearing blockages in the system.

Frequently asked questions

Can the PC-59 be used with submersible pumps?
Yes, the unit is suitable for submersible pumps as long as the system operates within the specified voltage and pressure limits and the water remains free of large particulates.

Is it possible to adjust the pressure settings manually?
Yes, the unit allows for manual adjustment of both starting and stopping pressure thresholds using the marked adjustment screw after removing the top cover. However, this should be done with care to avoid overpressure conditions.

Does the unit require a separate pressure tank to function?
No, the PC-59 can operate independently without a pressure tank. It can also be integrated with existing pressure vessel systems to enhance automation and efficiency.

What happens if the water supply is interrupted?
The unit will detect the drop in flow and shut off the pump automatically to prevent dry-running. Once the flow is restored, the operator must press the reset button to restart the pump.