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1.Immerse the thermostat in water, and heat the water while stirring. Check the thermostat
valve opening temperature.
Standard value:
<4B1> 82 ± 1.5°C
<4J1> 87 ± 1.5°C
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2.Check that the amount of valve lift is at the standard value when the water is at the
full-opening temperature.
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Measure the valve height when the thermostat is fully closed, and use this measurement
to compare the valve height when the thermostat is fully open.
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Standard value:
Full-opening temperature: 95°C
Amount of valve lift: 8.5 mm or more
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