Danfoss KPU6B Pressure Control Instruction Manual

1. Introduction

This manual provides essential information for the safe and effective installation, operation, and maintenance of the Danfoss KPU6B Pressure Control. The KPU6B is a robust pressure switch designed for industrial applications, featuring a 1/4 inch M Flare connection, manual reset functionality, and a pressure rating up to 60 PSI. Please read this manual thoroughly before proceeding with installation or operation.

2. Safety Information

Warning: Improper installation, operation, or maintenance can result in serious injury or equipment damage. Always adhere to local codes and regulations.

• Installation and servicing must be performed by qualified personnel only.
• Ensure the system is depressurized and de-energized before performing any work on the unit.
• Wear appropriate personal protective equipment (PPE).
• Do not exceed the specified pressure or electrical ratings.
• Protect the unit from physical damage and extreme environmental conditions.

3. Product Overview

The Danfoss KPU6B Pressure Control is a compact and reliable device for monitoring and controlling pressure in various systems. It features a durable dark gray casing, a transparent window for viewing the pressure scale, and a pressure connection port at the bottom.

This image displays the Danfoss KPU6B Pressure Control. It features a robust dark gray housing, a transparent window revealing the pressure scale, and the Danfoss logo prominently displayed. The pressure connection port is located at the bottom, and adjustment/reset mechanisms are visible on the top surface.

4. Setup and Installation

4.1 Mounting

Mount the KPU6B pressure control in a location free from excessive vibration, direct sunlight, and extreme temperatures. Ensure adequate space for wiring and pressure line connections.

4.2 Pressure Connection

Connect the 1/4 inch M Flare port at the bottom of the unit to the system's pressure line. Use appropriate sealing methods to prevent leaks. Ensure the connection is tight but do not overtighten.

4.3 Electrical Connection

Refer to the wiring diagram provided with the product packaging for specific electrical connections. Ensure all electrical connections comply with local electrical codes. Connect the power supply and control circuits to the designated terminals. Verify proper grounding.

5. Operating Instructions

5.1 Pressure Setting

The KPU6B features an adjustable pressure setting. Use the adjustment mechanism (typically a screw or knob on the top of the unit) to set the desired cut-in or cut-out pressure. The current pressure setting can be observed through the transparent window on the front of the unit.

5.2 Manual Reset

This model includes a manual reset function. If the pressure control trips due to an abnormal pressure condition, it will remain in the tripped state until manually reset. To reset the unit, press the designated reset button (often green) located on the top of the control. Ensure the system conditions have returned to normal before resetting.

6. Maintenance

Regular maintenance ensures optimal performance and longevity of your Danfoss KPU6B Pressure Control.

• Inspection: Periodically inspect the unit for any signs of physical damage, corrosion, or leaks.
• Cleaning: Keep the exterior of the unit clean and free from dust and debris. Do not use abrasive cleaners or solvents.
• Connection Check: Verify that all electrical and pressure connections remain secure.
• Functionality Test: Periodically test the pressure control's functionality to ensure it operates within the desired parameters.

7. Troubleshooting

If you encounter issues with your Danfoss KPU6B Pressure Control, consider the following common problems and solutions:

• Unit not switching:
  • Check power supply to the unit.
  • Verify electrical connections are secure and correct.
  • Ensure system pressure is within the operating range and reaching the set point.
  • If it's a manual reset model, check if it needs to be manually reset.
• Inaccurate pressure readings:
  • Check for blockages in the pressure line to the control.
  • Verify the system pressure with a calibrated gauge.
  • Ensure the unit is not exposed to excessive vibration.
• Leaks at connection:
  • Depressurize the system.
  • Inspect the 1/4 inch M Flare connection for proper sealing and tightness. Replace seals if necessary.

For persistent issues, contact Danfoss technical support or a qualified service technician.

8. Specifications

9. Warranty and Support

For information regarding product warranty, technical support, or spare parts, please refer to the official Danfoss website or contact your authorized Danfoss distributor. Keep your purchase receipt and product serial number handy when contacting support.