8407 BROADWAY SECURE SPACE STORAGE 2026-01-02

TFP1O2O Page 17 of 20 Also partially open the Low Body Drain Valve to assure that the riser is completely drained. Close the Low Body Drain Valve as soon as water ceases to discharge. Step 8. Refer to Table B and then restore the system to the normal system air pressure as necessary to hold the DPV-1 Valve closed. Step 9. Depress the plunger on the Automatic Drain Valve to make sure it is open and that there is no air discharging. The absence of air discharging from the Automatic Drain Valve is an indica- tion of a properly set air seat within the DPV-1 Valve. If air is discharging, refer to the Care and Maintenance section under Automatic Drain Valve Inspection to determine/correct the cause of the leakage problem. Step 10. Partially open the Main Control Valve. Slowly close the Main Drain Valve as soon as water discharges from the drain connection. Depress the plunger on the Automatic Drain Valve to make sure that it is open and that there is no water discharging. The absence of water discharging from the Automatic Drain Valve is an indica- tion of a properly set water seat within the DPV-1 Valve. If water is discharging, refer to the Care and Maintenance section under the Automatic Drain Valve Inspection to determine/correct the cause of the leakage problem. If there are no leaks, the DPV-1 Valve is ready to be placed in service and the Main Control Valve must then be fully opened. Note: After setting a fire protection system, notify the proper authorities and advise those responsible for moni- toring proprietary and/or central station alarms. Step 11. Once a week after a valve is reset following an operational test or system operation, the Low Body Drain Valve (and any low point drain valves) should be partially opened (and then subsequently closed) to relieve drain - back water. Continue this procedure until drain -back water is no longer present. Care and Maintenance The following procedures and inspec- tions should be performed as indicated, in addition to any specific requirements of the NFPA, and any impairment must be immediately corrected. Before closing a fire protection system main control valve for maintenance work on the fire protection system that it controls, permission to shut down the affected fire protection system must be obtained from the proper authorities and notify all personnel who may be affected by action. The owner is responsible for the inspection, testing, and mainte- nance of their fire protection system and devices in compliance with this document, as well as with the appli- cable standards of the National Fire Protection Association (e.g., NFPA 25), in addition to the standards of any authority having jurisdiction. Contact the installing contractor or sprinkler manufacturer regarding any questions. Automatic sprinkler systems are recom- mended to be inspected, tested, and maintained by a qualified Inspection Service in accordance with local requirements and/or national codes. The operational test procedure and waterflow pressure alarm test procedure will result in operation of the associated alarms. Consequently, notification must first be given to the owner and the fire department, central station, or other signal station to which the alarms are connected. Annual Operation Test Procedure Note: Unless otherwise noted, refer to Figure 4, 5, or 6 to identify functional trim components. Proper operation of the DPV-1 Valve (i.e., opening of the DPV-1 Valve during a fire condition) should be verified at least once a year as follows: Step 1. If water must be prevented from flowing beyond the riser, perform the following steps. • Close the Main Control Valve. • Open the Main Drain Valve • Open the Main Control Valve one turn beyond the position at which water just begins to flow from the Main Drain Valve. • Close the Main Drain Valve. Step 2. Open the system's Inspector's Test Connection. Step 3. Verify that the DPV-1 Valve has operated, as indicated by the flow of water into the system and that all waterflow alarms operate properly. Step 4. Close the system's Main Control Valve. Step 5. Reset the DPV-1 Valve in accor- dance with the Valve Setting Procedure. Note: It is recommended that the requirement of NFPA 25 to annually inspect the inside of the valve be performed at this time and prior to resetting the DPV-1 valve. Refer to the Automatic Drain valve Inspection sub -section Steps 2 through 5 for instructions with regard to the inspec- tion of the Clapper Facing. Quarterly Waterf low Alarm Test Procedure Testing of the system waterflow alarms should be performed quarterly. To test the waterflow alarm, open the Alarm Test Valve, which will allow a flow of water to the Waterflow Pressure Alarm Switch and/or Water Motor Alarm. Upon satisfactory completion of the test, close the Alarm Test Valve. Water Pressure Inspection The Water Pressure Gauge is to be inspected monthly (per NFPA 25) to ensure that normal system water pressure is being maintained. Air Pressure Inspection The Air Pressure Gauge is to be inspected monthly (per NFPA 25) to ensure that normal system air pressure is being maintained. Automatic Drain Valve Inspection The Automatic Drain Valve should be inspected monthly (per NFPA 25) by depressing the plunger and checking to ensure that the Automatic Drain Valve is not discharging water and/or air. A discharge of water and/or air is an indi- cation that the air and/or water seats are leaking, which could subsequently cause a false operation should the intermediate chamber become inad- vertently pressurized. If leakage is present, take the DPV-1 Valve out of service (i.e., close the main control valve, open the main drain valve, close the air supply control valve, remove the Dry Pipe Valve Accelerator from service, as applicable, in accor- dance with its Technical Data Sheet (Refer to TFP1105 for the VIZOR or TFP1112 for the ACC-1), and open the Inspector's Test Connection to relieve the system air pressure to 0 psig as indicated on the System Air Pressure Gauge), and then after removing the Handhole Cover, perform the following steps: Step 1. Make sure that the Seat Ring is clean and free of any nicks or signifi- cant scratches. Step 2. Remove the Clapper Assembly from the valve by first pulling out the Hinge Pin. Step 3. Disassemble the Clapper Facing Retainer from the Clapper so that the Clapper Facing can be removed and inspected. Make sure that the Clapper Facing does not show signs of compression set, damage, etc. Replace the Clapper Facing if there is any signs of wear.