where is the thermocouple located and what does it look like on GAFFERS AND SATTLER unit 1967 year, thx for the infoill replace it when i know where it is
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Looking at the gas valve, find the 1/4 aluminum tube and follow it to the pilot burnerRunning close to the aluminum tube and attached to the gas valve will be a smaller copper tubeThe thermocouple will be the small rod at the end of the copper tube next to the pilot burnerThe thermocouple is placed so that the pilot flame will play on the 1/2 to 3/8 at the endThat is called the hot junctionThe flame playing on the hot junction will produce a small amount of voltage that is used by the gas valve's safety deviceThe copper tube has a fitting that threads into the gas valveIt should be tightened slightly beyond finger tightThermocouples fail over timeYou can purchase universal thermocouple replacements easilyThey come with 18, 24 30 and 36 lengthsBuy the longer ones, the excess can be left coiled, no problemBe careful to position the hot junction correctlyToo much in the flame (more than 3/8) and the voltage will be canceledYou'll have to hold the gas valve in the pilot position and depressed long enough for the temperature of the hot junction to rise and make enough voltage to hold the safety device open.
