Electrolux Professional A7FTEDCSI0, Service Manual

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48
FRY TOP 700/900 EL/GAS
The thermocouple (TC) is an electrical device consisting of two dissimilar conductors forming electrical junc-
tions at differing temperatures . A thermocouple produces a temperature-dependent voltage as a result of the
thermoelectric effect .
Safety TCi, the tip of the thermocouple is placed in the pilot flame, generating a voltage which operates the
supply valve which feeds gas to the pilot. So long as the pilot flame remains lit, the thermocouple remains hot,
and the pilot gas valve is held open. If the pilot light goes out, the thermocouple temperature falls, causing the
voltage across the thermocouple to drop and the valve to close.
A
B
C
TCi
INTERRUPTED
TCi = thermocouple with interrupter
A = side exposed to the flame (or junction end )
B = copper tube
C = end side (or button end )
15mV