HP SWITCH (MRD-12-00628-51)

The High Pressure (HP) Switch is a vital safety device within transport refrigeration systems. It helps protect the system by detecting abnormal pressure levels and taking corrective action.

• Critical Pressure Detection: Installed on the high-pressure side, the HP switch senses when refrigerant pressure becomes dangerously high.
• Safety Shutoff: Once excessive pressure is detected, the switch disables the compressor to prevent possible system damage or safety hazards.
• Preventive Role: It reduces risk from events like clogged condensers or failed fans, which could otherwise lead to overheating or rupture.
• Fault Diagnosis: When triggered, the switch provides an important clue to technicians, guiding inspections of airflow or refrigerant charge issues.
• Operational Stability: It ensures the refrigeration unit runs within safe limits, promoting longer equipment life and minimizing downtime.

In short, the HP switch contributes to safe and stable refrigeration by acting as a first line of defense against overpressure conditions.