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August 24, 2006
C. The sprinkler discharge pattern is critical for proper fire protection. Therefore, nothing should be hung from, attached to,
or otherwise obstruct the discharge pattern. All obstructions must be immediately removed or, if necessary, additional
sprinklers installed.
D. When replacing existing sprinklers, the system must be removed from service. Refer to the appropriate system de-
scription and/or valve instructions. Prior to removing the system from service, notify all Authorities Having Jurisdiction.
Consideration should be given to employment of a fire patrol in the affected area.
1. Remove the system from service, drain all water, and relieve all pressure on the piping.
2. Using the special sprinkler wrench, remove the old sprinkler and install the new unit. Care must be taken to ensure that
the replacement sprinkler is the proper model and style, with the correct orifice size, temperature rating, and response
characteristics. A fully stocked spare sprinkler cabinet should be provided for this purpose.
3. Place the system back in service and secure all valves. Check the replaced sprinklers and repair all leaks.
E. Sprinkler systems that have been subject to a fire must be returned to service as soon as possible. The entire system
must be inspected for damage and repaired or replaced as necessary. Sprinklers that have been exposed to corrosive
products of combustion, but have not operated, should be replaced. Refer to the Authorities Having Jurisdiction for
minimum replacement requirements.
TECHNICAL DATA
Sprinkler 124 g
ESFR PENDENT SPRINKLER
SIN VK510 (K25.2)
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