5901 23RD DR W ZAP ENERGY 2025-08-04

Troubleshooting sYMPTOM #1 Check fails to hold 1.0 psid minimum stem not FEBCO® or sYM PTOM N2 - Chatter during flow conditions A. Worn or damaged parts Inspect and replace sYMPTOM N3 (DCDA ONLY) Low flow passing through the mainline valve (DCDA onli Vandalism If the unit is installed where vandalism may be problem, the assembly should be protected and secured. On Y2" through 2" (15-20mm) units, the handles of shutoff valves can be removed to discourage tampering. On 2Y2" through 10" (65-250mm) units, a chain can be looped through both shutoff valve handwheels and locked in position to prevent tampering. Testcock handles can also be removed. On backflow prevention assem- blies installed in conjunction with fire sprinkler systems, a tamper switch can be placed on the OS&Y shutoff valves that will trigger an alarm if an unauthorized closure should occur. A protective enclosure can be installed over the unit to discouragevan- dals. If an enclosure is used, it should be installed so that adequate clear- ance is available for maintenance and testing. Consult local codes before installing any type of protective enclosure. Testing All mechanical devices should be inspected on a regular basis to ensure they are working correctly. The assembly should be tested at time of ini- tial installation, after servicing or maintenance, and at least annually there- after Acceptable test procedures are published by Foundation for Cross - Connection Control and Hydraulic Research at the University of Southern California (USC),The American Water Works Association (AWWA),The American Society of Sanitary Engineering (ASSE Series 5000) and the Canadian Standards Association (CAN/CSAB64.HO). Please consult the regulatory authority in your area for more specific information.