ADC AD-410 - Manual (Page 56)

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3. Sprinkler System Component Replacement
a. Resistive Temperature Device (RTD) Replacement
1) Turn the water supply to the dryer off.
2) Discontinue electrical service to the dryer.
3) Remove the 1/4" compression fitting.
4) Remove the two (2) screws from the junction box cover.
5) Remove the wires of the RTD (Resistive Temperature Device) from the terminal strip.
NOTE: Identify the wires removed for proper reinstallation.
6) Loosen the cord grip cap.
7) Remove Resistive Temperature Device (RTD).
8) To install new RTD (Resistive Temperature Device), reverse above procedure..