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d) Sprinkler Digital Temperature Controller
The sprinkler digital temperature controller is a programmable | MAN3488 |
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microprocessor used to monitor temperatures via a Resistive |
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Temperature Device (RTD). |
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NOTE: Operating parameters are preset at the factory and should not |
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require any adjustment. |
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2.Sprinkler System Operation
NOTE: Refer to the ladder diagram provided with the dryer for specific relay logic.
Master Relay
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 tumbler (basket) temperature falls below the
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