| 摘要 |
A dryer fire protection system has a control circuit for controlling power supplied from a source, via a power cord comprising a neutral line and at least one entry live line, to a load connected with the neutral line and at least one load live line. The control circuit has a relay comprising an electromagnet and a normally closed switch, when the electromagnet is de-energized, to allow power to flow between the entry live line and corresponding load live line. An electromagnet control circuit connected between the entry line and neutral line has a plurality of normally open thermostats in parallel and mounted within the cabinet external of a drum and ducting associated therewith. Power is normally disconnected from the electromagnetic circuit to de-energize the electromagnet. Excessive cabinet heat closes at least one thermostat to power the electromagnet circuit to energize the electromagnet to open the switch.
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