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Supervisory Devices Checklist
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Use these testing methods for certain supervisory devices
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NFPA 72, the National Fire Alarm Code, outlines methods to test the following supervisory devices:
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Control valve switches |
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- Verify a signal under one of the following conditions:
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- Within the first two revolutions of the hand wheel
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- Within one-fifth of the travel distance
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- According to manufacturer specifications
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High- and low-air pressure switches |
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- Verify a signal when the required pressure increases or decreases a maximum of 10 lbs per square inch
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Room temperature switches |
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- Verify a signal to indicate a decrease in room temperature to 40° F
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- Verify a signal to indicate a restoration in room temperature to above 40° F
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Water level switches |
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- Verify a signal under one of the following conditions:
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- The water level raises or lowers 3 inches from the required level within a pressure tank
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- The water level raises or lowers 12 inches from the required level within a nonpressure tank
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- Verify a signal to indicate the restoration of the required water level
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Water temperature switches |
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- Verify a signal to indicate a decrease in water temperature to 40° F
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- Verify a signal to indicate a restoration in water temperature to above 40° F
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Waterflow devices |
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Flow water through an inspector's test connection |
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- Verify a signal under one of the following conditions:
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- A flow of water equal to that from a single sprinkler of the smallest orifice size for wet pipe systems
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- An alarm test bypass connection for dry pipe, preaction, or deluge systems
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Additional comments:______________________________________________________
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Source: Based on information from Table 7-2.2 in NFPA 72 (1999 edition).
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