3003 W CASINO RD BLDG 40-87 2025-08-21

TFP1020 Page 18 of 20 Step 3. Verify that the DPV-1 Valve Care and has operated, as indicated by the flow Nominal Torque Maintenance of water into the system and that all Valve Sizes lb-ft waterflow alarms operate properly. in. (N•m) (DN) The following procedures and inspec- Step 4.Close the system Main Control tions should be performed as indicated, Valve. 2-1/2 30 in addition to any specific requirements (DN65) (41) Step 5. Reset the DPV-1 Valve in of the NFPA,and any impairment must accordance with the Valve Setting 3 30 be immediately corrected. Procedure. (DN80) (41) Before closing a fire protection system Note: It is recommended that the 4 30 main control valve for maintenance requirement of NFPA 25 to annually (DN100) (41) work on the fire protection system that inspect the inside of the valve be per- 6 55 it controls,permission to shut down the formed at this time and prior to reset- (DN150) (75) affected fire protection system must be ting the DPV-1 Valve. Refer to the obtained from the proper authorities Automatic Drain Valve Inspection sub- TABLE C and notify all personnel who may be HANDHOLE COVER BOLTS affected by action. section Steps 2 through 5 for ction of MAXIMUM TORQUE tions with regard to the inspection of The owner is responsible for the the Clapper Facing. inspection,testing,and maintenance of Quarterly Waterf low Alarm Test Gauge), and then after removing the their fire protection system and devices d roceure p Handhole Cover, perform the follow- in compliance with this document, as ing steps: well as with the applicable standards Testing of the system waterflow alarms of the National Fire Protection Associa- should be performed quarterly.To test Step 1. Make sure that the Seat Ring tion (e.g., NFPA 25), in addition to the the waterflow alarm, open the Alarm is clean and free of any nicks or signifi- standards of any authority having juris- Test Valve, which will allow a flow of cant scratches. diction. Contact the installing contrac- water to the Waterf low Pressure Alarm Step 2. Remove the Clapper Assem- tor or sprinkler manufacturer regarding Switch and/or Water Motor Alarm. bly from the valve by first pulling out any questions. Upon satisfactory completion of the the Hinge Pin. Automatic sprinkler systems are rec- test, close the Alarm Test Valve. Step 3. Disassemble the Clapper ommended to be inspected, tested, Water Pressure Inspection Facing Retainer from the Clapper and maintained by a qualified Inspec- The Water Pressure Gauge is to be so that the Clapper Facing can be tion Service in accordance with local inspected monthly (per NFPA 25) to removed and inspected. Make sure requirements and/or national codes. ensure that normal system water pres- that the Clapper Facing does not show sure is being maintained. signs of compression set,damage,etc. The operational test procedure and Clapper the lace waterflow pressure alarm test pro- Air Pressure Inspection Replace PP Facing if there is cedure will result in operation of the The Air Pressure Gauge is to be any signs of wear. associated alarms. Consequently, inspected monthly (per NFPA 25) to Step 4. Clean the Clapper Facing, notification must first be given to the ensure that normal system air pressure Clapper, and Clapper Facing Retainer, owner and the fire department, central is being maintained. and then reassemble the Clapper station,or other signal station to which Automatic Drain Valve Inspection Assembly. the alarms are connected. The Automatic Drain Valve should be Step 5.Reinstall the Clapper Assembly Annual Operation Test Procedure inspected monthly (per NFPA 25) by with its Hinge Pin. Note:Unless otherwise noted, refer to depressing the plunger and check- Figure 3, 4, or 5 to identify functional g in to ensure that the Automatic Drain Step 6. Install Handhole Cover: trim components. Valve is not discharging water and/or a. Align Handhole Cover Gasket and air. A discharge of water and/or air is Handhole Cover in proper orien- Proper operation of the DPV-1 Valve an indication that the air and/or water tation with valve body(Ref. Figure (i.e.,opening of the DPV-1 Valve during seats are leaking, which could subse- 1)and hold in place a fire condition) should be verified at quently cause a false operation should least once a year as follows: the intermediate chamber become b. Apply o Hex E It t rea s equiv- Step 1. If necessary, prevent water inadvertently pressurized. anent)to Hex Bolt threads Hand- from flowing beyond the riser by: If leakage is present, take the DPV-1 c. Insert Hex Bolts through Hand- • Close the Main Control Valve Valve out of service (i.e., close the hole Cover Gasket and le main control valve,open the main drain Cover, hand-tighten inttoo valve • Open the Main Drain Valve valve,close the air supply control valve, body • Open the Main Control Valve one turn remove the Dry Pipe Valve Accelerator d. Using crossdraw sequence to beyond the position at which water from service, as applicable, in accor- assure uniformity,wrench-tighten just begins to flow from the Main dance with its Technical Data Sheet Hex Bolts to appropriate torque Drain Valve (Refer to TFP1105 for the VIZOR or values(Ref.Table C) • Close the Main Drain Valve TFP1112 for the ACC-1), and open the e. Inspect to assure all Hex Bolts Inspector's Test Connection to relieve are securely tightened Step 2. Open the system Inspector's the system air pressure to 0 psig as Test Connection. indicated on the System Air Pressure