PMC Flex Thermocouple replacement for EL-51A Temperature Sensing Unit

Thermocouple Replacement:
NOTE! The Thermocouple is assembled into the
Connector Body with a Ferrule and Nut. Once
inserted into the Body and the Nut is tightened, the
Ferrule locks to the Thermocouple and does not
allow it to be relocated or moved. The location of
the Thermocouple is very important and must be
done correctly before tightening the Nut.
1. Unscrew the Nut that holds the defective Thermocouple
and remove from the Body. Disconnect Thermocouple
wiring located under the Top Cover of the Heater. Remove
Body and discard.
2. Install Heating Element and Spring if also removed.
3. Install Connector Body into Heater using an open-end
wrench and tighten to prevent leakage. Teflon Tape or
appropriate Thread Sealant should be used.
4. Slide the Nut and the Ferrule over the Thermocouple
and insert this assembly into the Connector Body
until it comes into positive physical contact with the
Heating Rod. Make sure the Spring does not prevent
the Thermocouple from making contact with the
Heating Rod.
5. Slowly tighten the Nut using an open-end wrench,
ensuring the Thermocouple maintains positive
physical contact with the Heating Rod.
6. Reinstall the Thermocouple wires.

Polyurethane Machinery Corporation (PMC)