ASME A112.19.17-2010 pdf download
ASME A112.19.17-2010 pdf download.Manufactured SafetyVacuum Release Systems (SVRS) forResidential and Commercial Swimming Pool, Spa, Hot Tub,and Wading Pool Suction Systems.
1.4 Definitions
blocking element: the part used to simulate an entrapped victim constructed of a 12 in. (305 mm) x 12 in. (305 mm) (tolerance = ± 0.25 in.) maximum 5 in. (127 mm) thick closed cell foam block with a covering of Buna-N rubber sheet having a minimum of 1/8 in. (3 mm) thickness and Shore A durometer 60 ± S or equivalent whose combined buoyancy force is between 14.0 lbf (62.2 N) and 15.0 lbf (66.7 N).
cycle: a sequence where the SVRS activates, latches, or locks out in the vented or safe position following a high vacuum occurrence and then is automatically or manually reset.
flooded suction: a pooi, spa, hot tub, wading pool, or similar appliance whose circulation system pump suction inlet or inlets are located below the static water level in the appliance (flooded suction).
high vacuum occurrence: an event where the operating vacuum normally present within a pool circulation system increases due to a full suction outlet blockage.
Safety Vacuum Release System (SVRS): a system or device capable of automatically providing vacuum release at a suction outlet caused by a high vacuum occurrence due to a suction outlet flow blockage. The device or system provides vacuum release with or without suction fitting cover(s) in place.
suction lift: a pooi, spa, hot tub, wading pool, or similar appliance whose circulation system pump suction inlet or inlets are located above the static water level in the appliance (nonflooded suction).
suction outlet: an appurtenance within a pool, spa, hot tub, wading pool, or similar appliance for conveying water into a circulating system; i.e., a pump suction.
suction system: that portion of the circulation piping located between the pool suction outlet and the inlet side of the pump and usually includes the following: main suction outlet piping, skimmer piping, and/or vacuum piping.
2 REQUIREMENTS
2.1 GeneraL
2.1.1 Field-adjustable SVRS devices when provided with a vacuum gauge shall have a maximum graduation of I in.
(13 mm) Hg increments to aid in calibration and trouble shooting.
2.4.2.4 A ball, butterfly, or sliding gate valve shall be installed within 2 ft (0.6 m) upstream from the SVRS (between the SVRS and the protected suction outlet), or a test mat shall be used to cover the suction outlet to simulate an entrapment event. There shall be three simulated entrapment tests conducted to verify proper adjustment and operation of the device.
2.4.2.5 Where an SVRS is used, one SVRS device shall be installed for each circulating pump piped directly to the suction outlet(s) without the use of valves that could isolate the SVRS device from the suction system.
2.5 Owner’s ManuaL
The Owner’s Manual shall include at a minimum
(a) model designation and manufacturer.
(b) a description of device operation, including diagrams illustrating basic design.
(c) a statement confirming that the device meets the requirements of ASME Al 12.19.17-2010.
(d) a statement that the SVRS is designed to release body entrapment. It may mitigate evisceration (prolapse) or limb entrapment. It does not prevent hair or mechanical entrapment.
ft) SVRS devices are tested with a single functioning suction outlet.
(f) name and telephone number of an appropriate service location.
(g) methods and criteria to be used to identify malfunctions or problems.
(h) operating instructions that clearly describe proper function of the device and the operating and maintenance responsibilities of the owner and authorized service personnel.
(I) an overview of the function of each component and the expected function of the entire device when all components are properly assembled and connected.
2.6 InstaLLation/Operation/TroubLeshooting ManuaLs
The device shall be installed and tested in accordance with manufacturer’s instructions. The instructions in the installation/operation/troubleshooting manuals shall include
(a) list of device components, illustration, or photograph
(b) unpacking instructions including safety considerations, identification of fragile components, and measures to avoid damage to the device
(c) sequential installation procedure
(d) definition of installation requirements including applicable plumbing and electrical power requirements
(e) a clear statement describing any limitations of pool and spa/hot tub circulation systems or usage including the maximum pipe size and flow rate the device is designed and tested to protect.
