High Limit Thermocouples Replacement

Ensure the oil is drained from the vat and filter pan.

Remove the filter pan.

Remove the reserve oil tank and set aside.

Note how and where the old thermocouple(s) protrudes through the front side of the vat, and then through the spreader bar assembly.

Lower or remove the front control panel as needed for access.

Remove the front shroud, left or right-side panels as needed for access.

Loosen the Allen screws holding together the spreader bar. Do not remove completely.

Disconnect the thermocouple wire lead, which is located behind the control panel.

Remove the compression nut connecting the thermocouple to the vat.

Apply white Loctite to the threads of the compression nut on the new thermocouple and then insert through opening.

Tighten the thermocouple compression nut by hand to snug (zero torque), and then add 1/4 to 1/2 half turn with a wrench. Do not overtighten.

Connect the wire lead.

Install the drain pan, and reserve oil tank.

Reconnect the power.

Add oil to the vat, and then run a filter cycle while checking for leaks.

If leaks are discovered, repair as necessary.

Test the thermocouple to ensure it works properly.

Replace all the panels.