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Repair Instructions
Thermostat, function test
A function test should be carried out before the ther-
mostat is replaced.
1
Check that the thermostat is completely closed.
Hold the thermostat to the light and check that no air
column is visible at the separation point.
If the thermostat does not close completely it should
be replaced.
2
Warm up water in a container to 75° C and insert ther-
mostat as illustrated.
3
Check after at least ½ minute that the thermostat is
still closed.
4
Heat the water to boiling point 100° C.
Check after a t least ½ minute boiling that the thermo-
stat has opened 7 mm.
If the thermostat does not open, replace it.
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