Danfoss KP 1 Manual Pressure Switch User Manual

1. はじめにview

The Danfoss KP 1 is a robust manual pressure switch designed for a wide range of industrial applications. It is suitable for use in systems requiring precise pressure monitoring and control, such as boilers, gas compressors, automotive systems, pumps, steam turbines, and steam power plants. This device operates within a pressure range of -2.90 to 108 PSI, providing reliable performance in demanding environments. Its compact design and durable construction ensure long-term stability and accuracy.

2. 安全情報

Before installation, operation, or maintenance, read and understand all instructions and safety warnings. Failure to follow these instructions may result in property damage, serious injury, or death.

• 資格のある担当者のみ: Installation and servicing must be performed by qualified and authorized personnel familiar with electrical and pressure systems.
• 電源を切る: 設置、配線、メンテナンスを行う前に、必ずシステムの電源を切ってください。
• 圧力解放: Ensure all pressure is safely released from the system before attempting to install or remove the switch.
• 適切な配線: Adhere to all local and national electrical codes. Ensure correct wiring connections to prevent electrical hazards.
• 環境条件: Do not expose the switch to conditions beyond its specified operating limits (e.g., extreme temperatures, corrosive environments) unless specifically designed for such use.
• 個人用保護具（PPE）： 設置およびメンテナンス中は、安全メガネや手袋などの適切な個人用保護具を着用してください。

3 製品の特徴

The Danfoss KP 1 pressure switch incorporates several features for reliable and precise pressure control:

• 広い圧力範囲: Capable of operating from -2.90 PSI to 108 PSI.
• SPDT Switch Type: Single Pole Double Throw (SPDT) contact for versatile control applications.
• 表面実装設計: 簡単かつ安全なインストールを実現します。
• Push Button Actuator: For manual reset or testing functions.
• IP30 International Protection Rating: Provides protection against solid objects larger than 2.5mm.
• 耐久性のある構造: Made with copper material for longevity and performance.

4. セットアップとインストール

Proper installation is crucial for the accurate and safe operation of the Danfoss KP 1 pressure switch.

4.1 取り付け

The KP 1 is designed for surface mounting. Select a stable, vibration-free location that is easily accessible for adjustments and maintenance. Use appropriate fasteners to secure the switch firmly to the mounting surface.

Figure 1: Danfoss KP 1 Pressure Switch, illustrating the surface mount design and pressure connection port.

4.2 圧力接続

Connect the pressure line from your system to the inlet port of the pressure switch. Ensure a leak-tight connection using appropriate sealing materials (e.g., PTFE tape or thread sealant) and tools. Avoid overtightening to prevent damage to the switch or piping.

図2：下 view of the Danfoss KP 1, highlighting the pressure inlet connection.

4.3電気配線

Wire the pressure switch according to the system's electrical schematic and local codes. The KP 1 features an SPDT (Single Pole Double Throw) terminal, allowing for flexible control configurations (e.g., normally open or normally closed operation). Ensure all connections are secure and insulated.

5. 操作手順

The Danfoss KP 1 pressure switch is designed for automatic operation once the set points are configured.

5.1 圧力ポイントの設定

The switch features adjustable set points for both cut-in (ON) and cut-off (OFF) pressures. These adjustments are typically made using a screwdriver on the internal adjustment screws, visible through the transparent cover. Refer to the scale on the device for precise settings.

図3：上 view of the Danfoss KP 1, showing the 'CUT IN' and 'OFF' pressure setting scales in bar and psig.

• カットイン圧力: This is the pressure at which the switch will activate (e.g., turn on a pump).
• Cut-off Pressure: This is the pressure at which the switch will deactivate (e.g., turn off a pump).
• 差額: The difference between the cut-in and cut-off pressures. This can often be adjusted independently or is fixed.

After setting, carefully observe the system's behavior to ensure the switch operates as intended within the desired pressure range.

5.2 Manual Reset/Test

If equipped with a push-button actuator, this can be used for manual reset or to test the switch's operation. Consult your system's specific requirements for when a manual reset might be necessary.

6. メンテナンス

Regular maintenance ensures the longevity and accurate performance of your Danfoss KP 1 pressure switch.

• 目視検査: スイッチに物理的な損傷、腐食、または接続の緩みなどの兆候がないか定期的に点検してください。
• 清潔さ: Keep the switch free from dust, dirt, and moisture. Use a soft, dry cloth for cleaning. Do not use abrasive cleaners or solvents.
• 接続の整合性: Check pressure and electrical connections for tightness and absence of leaks.
• 機能テスト: If possible and safe to do so, periodically test the switch's operation by simulating pressure changes to verify its cut-in and cut-off points.

7。 トラブルシューティング

このセクションでは、よくある問題に関するガイダンスを提供します。複雑な問題については、資格のあるサービス担当者にお問い合わせください。

• Switch Not Activating/Deactivating:
  • Verify system pressure is within the switch's operating range and set points.
  • Check electrical connections for continuity and proper wiring.
  • Inspect for blockages in the pressure sensing line.
  • Ensure power supply to the control circuit is present.
• Inaccurate Switching:
  • Recalibrate the set points using a known accurate pressure gauge.
  • Check for pressure fluctuations or pulsations in the system that might affect readings.
  • Ensure the switch is not exposed to excessive vibration.
• Leakage at Pressure Connection:
  • Ensure proper thread sealant was used during installation.
  • Tighten the connection, but do not overtighten.
  • Inspect the threads for damage.

8. 仕様

9. 保証とサポート

For information regarding product warranty, technical support, or service, please contact Danfoss customer service or visit the official Danfoss website. Keep your purchase receipt and product model information readily available when seeking support.

ダンフォス公式 Webサイト： www.ダンフォス.com