Vulcan-Hart ML-114957, ML-52953 Thermocouple Check, Replacement, Thermocouple Replacement

Models: ML-114555 ML-114554 ML-114556 ML-114553 ML-114557 ML-52954 ML-52948 ML-114957 ML-52949 ML-52951 ML-52952 ML-52950 ML-52947 ML-52953

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THERMOCOUPLE CHECK, REPLACEMENT

THERMOCOUPLE CHECK, REPLACEMENT

THERMOCOUPLE CHECK

1.Fold lower kick panel down.

2.Perform pilot lighting procedures (see Page 13).

3.If unit will not stay lit, using a volt meter, check the millivolt reading from the valve thermocouple connection while holding pilot button in the “ON” position (see Fig. 37).

4.If millivolt reading is below 5 MV, replace thermocouple.

THERMOCOUPLE REPLACEMENT

TOOLS REQUIRED: 7/16" open end wrench, 3/8" open end wrench, 1/4" socket and socket driver.

1.Disconnect unit from main gas supply.

2.Remove 7/16" nut holding thermocouple to pilot bracket.

3.Remove thermocouple from bracket (Fig. 42).

Fig. 42

Fig. 43

4.Feed thermocouple assembly through front burner box (Fig. 43).

5.Remove thermocouple lead from safety valve (see Fig. 38).

6.Install new thermocouple by reversing Steps 1 through 5.

NOTE: Be careful not to kink new thermocouple wire during the installation process.

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Vulcan-Hart ML-114957, ML-52953, ML-52947, ML-52950, ML-52952 Thermocouple Check, Replacement, Thermocouple Replacement