• Ref Tools App

  Troubleshooter

  Essential information when troubleshooting refrigeration systems

Suction pressure too low

• Pressure drop across evaporator too high.
• Lack of subcooling ahead of expansion valve.
• Evaporator superheat too high.
• Pressure drop across expansion valve less thanpressure drop valve is sized for.
• Bulb located too cold, e.g. in cold air flow or near large valves, flanges, etc.
• Expansion valve too small.
• Expansion valve blocked with ice, wax or other impurities.
• Charge lost from expansion valve capillary.
• Charge migration in expansion valve.
• Evaporator wholly or partly iced up.