d. Sprinkler Digital Temperature Controller |
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The sprinkler digital temperature controller is a programmable |
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microprocessor used to monitor temperatures via a Resistive |
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Temperature Device (RTD). | MAN3488 |
NOTE: Operating parameters are preset at the factory and should not require any adjustment.
2.Sprinkler System Operation
NOTE: Refer to the ladder diagram provided with the dryer for specific relay logic.
Master Relay - The coil in this relay must be energized in order to close the contacts needed to supply power to the dryer’s control system.
Relay 1 - The coil in this relay energizes if the set- point is reached closing Contact 1 and Contact 2. Contact 1 latches Relay 1 on. Contact 2 closes, turning on the sprinkler, the horn, and the reset button light. Relay 1 will remain energized until the reset button is pushed.
Relay 2 - The coil in this relay energizes if the set- point is reached closing Contact 3, de- energizing the Master Relay, and shutting power off to the dryer. Relay 2 will remain energized until the reset button is pushed.
NOTE: The Sprinkler System will remain on until the basket (tumbler) temperature falls below the
3. Sprinkler System Component Replacement
a.RTD Replacement
1)Turn the water supply to the dryer off.
2)Discontinue electrical power to the dryer.
3)Remove the 1/4” (6.35 mm) compression fitting.
4)Remove the two (2) screws from the junction box cover.
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