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7. Dry-Type Sprinkler Systems—Have constrictor demonstrate that both high and ❑ ❑ ❑ low air pressure are supervised as required.The off-normal signal shall be initiated when the pressure increases or decreases by 10 psi. 8. Supervised Valves-Close all electrically supervised sprinkler control valves to ❑ ❑ ❑ verify supervisory alarm at the FACP within 2 turns of control wheel or, for post indicator valve within 1/5 of valve control mechanism's travel distance. Then reopen to verify"restore" signal. 9. Main Drain-Open the main drain valve, it should be able to be fully opened ❑ ❑ ❑ without causing water damage. When the pressure stabilizes, note whether the pressure dropped and stayed below the residual pressure on the calc plate. If it does,there is a problem with the system. 10. Calc Plates- Hydraulic Design Information Sign (Calc Plates) shall be proved by the ❑ ❑ ❑ installing contractor.The sign shall be weatherproof metal or rigid plastic secured with corrosion-resistant wire, chain, or other approved means. Such signs shall be placed at the alarm valve, dry pipe valve, pre-action valve, or deluge valve supplying the corresponding hydraulically designed area. The sign shall include the following information: • Location of the design area or areas • Discharge densities over the design area or areas • Required flow and residual pressure demand at the base of the riser • Occupancy classification or commodity classification and maximum permitted storage height and configuration • Hose stream allowance included in addition to the sprinkler demand • The name of the installing contractor 11. Door Signs- Doors leading into rooms that contain controls for fire sprinklers shall ❑ ❑ ❑ be identified with an approved sign. Approved signs shall identify fire protection equipment and be durable martials, red and white in color, permanently installed, and readily visible. 12. Valve Signs-All control, drain, and test connection valves shall be provided with a ❑ ❑ ❑ weatherproof metal or rigid plastic identification signs, secured with corrosion- resistant wire, chain, or other approved means.The sign shall identify the portion of the building served and systems with more than one control valve that must be closed to work on a system or space shall have a sign referring to existence and location of other valves. 13. Caution Sign -A caution signs shall be provided with the following wording: ❑ ❑ ❑ This valve controls fire protection equipment. Do not close until after fire has been extinguished. Use auxiliary valves when necessary to shut off supply to auxiliary equipment. CAUTION: Automatic alarm can be sounded if this valve is closed. Fire Marshal's Office 425.257.8100 1 everettwa.gov/fire I INFORMATION HANDOUT C-6 4.13.2020 I Page 9