HP SWITCH (MRD-12-00628-35)

The High Pressure (HP) Switch is an essential monitoring device in refrigerated transport units. It helps ensure safe system operation by responding to pressure conditions within the high-pressure side of the refrigeration circuit.

• Monitoring Discharge Pressure: Positioned after the compressor, the HP switch detects pressure changes in the high-side refrigerant line.
• Protecting Key Components: It interrupts power to the compressor or signals the control unit if pressure exceeds safe parameters, preventing component failure.
• Triggering Alarms or Shutdowns: The HP switch can activate alerts or shut down the unit entirely in the event of overpressure, helping avoid damage or unsafe operation.
• Reset Logic: Some switches automatically resume function once pressure normalizes; others require a technician to reset manually for system safety verification.
• Feedback for Troubleshooting: Activation of the switch often points to root issues such as airflow obstruction, condenser inefficiency, or refrigerant overcharge.

By integrating into the pressure control loop, the HP switch plays a key role in maintaining system balance, protecting equipment, and supporting diagnostic accuracy.

Catalogues

Neos 100S Catalogue