6 - 10
COOL
THERMOSTAT
EAS00463
CHECKING THE THERMOSTAT
1. Check:
• thermostat
1
Does not open at 71 ~ 85 °C
→
Replace.
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a. Suspend the thermostat in a container filled
with water.
b. Slowly heat the water.
c. Place a thermometer in the water.
d. While stirring the water, observe the ther-
mostat and thermometer’s indicated tem-
perature.
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1
Thermostat
2
Thermometer
3
Water
4
Container
È
Fully closed
É
Fully open
NOTE:
@
If the accuracy of the thermostat is in doubt,
replace it. A faulty thermostat could cause seri-
ous overheating or over cooling.
Temperature
Opening (mm)
2. Check:
• thermostat housing cover
• thermostat housing
Cracks/damage
→
Replace.
3. Check:
• thermostat housing O-ring
• thermostat housing inlet pipe O-ring
Damage
→
Replace.