Superheat Switch: Testing and Inspection

COOLING TEMPERATURE SWITCH <3000>

CAUTION: Do not heat more than necessary.





1. Dip the metal part of the cooling temperature switch into engine oil and increase the oil temperature using a gas burner or similar.




2. When the oil temperature reaches the standard value, check that voltage is supplied between the terminals.






NOTE: When the oil temperature is 135 °C (275 °F) or more and there is no continuity, the resistance will not be 2 ohms or lower until the oil temperature reduces to 120 °C (248 °F) or less.