User Guide

Vandalism
If the unit is installed where vandalism may be a problem, the assembly should be protected and secured. A chain can be looped through both
shutoff valve handwheels and locked in position to prevent tampering. Test cock valve handles can also be removed. On backflow prevention
assemblies 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 discourage vandals. 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.
2
MAINTENANCE MANUAL MODELS 860 & 880V 2
1
/2" – 10"
IOM-F-860_880V.indd 2 7/11/08 10:45:26 AM