1. Introduction
This manual provides essential information for the safe and effective installation, operation, and maintenance of the Danfoss 061F8490 Cartridge Pressure Switch. This device is designed for high-pressure applications, featuring a 1/4 inch flare connection and a normally open, single-pole, single-throw (SPST) contact type. Please read these instructions thoroughly before proceeding with installation or use.
2. Safety Information
WARNING: Improper installation, operation, or maintenance can result in serious injury or equipment damage. Always adhere to local electrical codes and safety regulations.
- Ensure power is disconnected before installation or servicing.
- Only qualified personnel should install and service this device.
- Verify that the operating pressure and voltage do not exceed the specified limits of the switch.
- Protect the device from physical damage and extreme environmental conditions beyond its IP65 rating.
- Do not modify the pressure switch in any way.
3. Setup and Installation
The Danfoss 061F8490 pressure switch is designed for surface mounting and features a 1/4 inch female flare connection for integration into high-pressure systems. The device comes with a 1.5-meter cable (AWG18) for electrical connection.
3.1 Mechanical Installation
- Identify a suitable surface for mounting the pressure switch. The mounting type is surface mount.
- Connect the 1/4 inch female flare connection of the pressure switch to the corresponding male flare fitting in your high-pressure system. Ensure a tight, leak-free seal.
- The switch is rated for pressures up to 200 BAR (2900 PSI). Verify your system's operating pressure is within this range.
Figure 1: Danfoss 061F8490 Cartridge Pressure Switch. This image shows the compact design of the pressure switch, featuring a brass 1/4 inch flare connection on one end and a black plastic housing with two electrical wires (1.5m cable, AWG18) extending from the other end, secured by an orange tie.
3.2 Electrical Connection
- Ensure the main power supply is OFF before making any electrical connections.
- The pressure switch has a 1.5 M cable with AWG18 wires. Connect these wires to your control circuit.
- This is a Normally Open (NO), Single-Pole, Single-Throw (SPST) switch. This means the circuit is open (no current flows) under normal conditions (below the set pressure) and closes (current flows) when the pressure reaches the activation point.
- The operating voltage is 250 Volts. Confirm your circuit voltage matches this specification.
- Ensure all electrical connections are secure and insulated to prevent short circuits.
4. Operating Instructions
The Danfoss 061F8490 pressure switch operates automatically based on the system pressure. Once installed and wired correctly, it will function without manual intervention.
- Automatic Operation: The switch is designed for automatic operation. It will change its contact state (from open to closed) when the system pressure reaches its factory-set activation point.
- Pressure Monitoring: The switch monitors the pressure in the connected system. When the pressure exceeds the threshold, the normally open contacts will close, completing the circuit.
- System Integration: The switch is typically integrated into control systems to activate or deactivate other components (e.g., pumps, alarms) based on pressure conditions.
- Actuator Type: The product specification mentions "Push Button" as an actuator type. If present, this may be for manual testing of the switch's functionality or for a manual override, depending on the specific model variant. Consult system diagrams for its intended use.
- Control Method: The specification also lists "Touch" as a control method. For a pressure switch, this typically refers to the physical interaction required to install or test the device, rather than an ongoing operational control.
5. Maintenance
The Danfoss 061F8490 pressure switch is designed for minimal maintenance. Regular inspections are recommended to ensure optimal performance and longevity.
- Visual Inspection: Periodically inspect the switch for any signs of physical damage, corrosion, or leaks around the flare connection.
- Cable Integrity: Check the 1.5 M cable for fraying, cuts, or damage to the insulation.
- Connection Security: Ensure all electrical and mechanical connections remain tight and secure.
- Cleaning: If necessary, clean the exterior of the switch with a soft, dry cloth. Do not use abrasive cleaners or solvents. The IP65 rating indicates protection against dust and low-pressure water jets, but direct immersion or high-pressure washing should be avoided.
- Functional Testing: If your system allows, periodically test the switch's functionality by simulating pressure changes to confirm it activates at the correct set point.
6. Troubleshooting
This section provides guidance for common issues. For problems not listed here, contact qualified service personnel.
| Problem | Possible Cause | Solution |
|---|---|---|
| Switch does not activate at expected pressure. | Incorrect system pressure; clogged pressure port; faulty switch. | Verify system pressure with a gauge. Check for obstructions in the pressure line. If pressure is correct and no obstruction, the switch may be faulty and require replacement. |
| No electrical signal when switch activates. | Loose or incorrect wiring; damaged cable; faulty control circuit. | Check all electrical connections for tightness and correct polarity. Inspect the 1.5 M cable for damage. Test the control circuit independently. |
| Leakage at flare connection. | Improperly tightened connection; damaged flare fitting. | Ensure the 1/4 inch flare connection is properly tightened. Inspect the flare fitting for damage and replace if necessary. |
| Switch contacts remain closed (or open) continuously. | Stuck contacts; internal mechanical failure; continuous over/under pressure. | Verify system pressure is within normal operating range. If pressure is normal, the switch is likely faulty and requires replacement. |
7. Technical Specifications
| Feature | Specification |
|---|---|
| Model | 061F8490 |
| Brand | Danfoss |
| Operation Mode | Automatic |
| Operating Voltage | 250 Volts |
| Contact Type | Normally Open (NO) |
| Terminal Type | SPST (Single-Pole, Single-Throw) |
| Connector Type | 1/4 Inch Flare (Female) |
| Maximum Pressure | 200 BAR (2900 PSI) |
| Cable Length | 1.5 Meters |
| Wire Gauge | AWG18 |
| Material | Copper (Contact Material) |
| International Protection Rating | IP65 |
| Mounting Type | Surface Mount |
| Actuator Type | Push Button |
| Control Method | Touch |
| Circuit Type | 1-way |
| Number of Positions | 1 |
| Color | Black |
| Item Weight | 0.01 Pounds |
| Certifications | CE, ETL, REACH, RoHS, WEEE |
8. Warranty and Support
8.1 Warranty Information
Danfoss products are manufactured to high-quality standards. For specific warranty terms and conditions applicable to the 061F8490 Cartridge Pressure Switch, please refer to the official Danfoss warranty statement available on their website or contact Danfoss customer service. Keep your proof of purchase for warranty claims.
8.2 Technical Support
For technical assistance, installation queries, or troubleshooting support, please contact Danfoss customer support or visit the official Danfoss website. Ensure you have the product model number (061F8490) and any relevant system details available when seeking support.
You can find more information and contact details on the Danfoss Store on Amazon or the official Danfoss corporate website.
