POTTER VSR-AT Waterflow Alarm Switch Instructions
- June 9, 2024
- POTTER
Table of Contents
VSR-AT Waterflow Alarm Switch
Instructions VSR-AT
Waterflow Alarm Switch with Auto Test Feature
Water Flow Auto Test Specifications
Furnish and install a Potter VSR-AT Vane type AUTO-TEST flow switch at each
fire sprinkler system connection to the wet pipe main where indicated on the
drawings and plans and as required by applicable local and national codes and
standards. All wetted parts of the water flow switch shall be non-metallic.
Water flow switch enclosure shall be NEMA 4 rated and shall be held captive by
tamper resistant screws. The device shall be listed for pressures up to 450
psi, maximum water surges of 18 fps and alarm activation by 10gpm. The
electronic retard shall also contain a motor and software that allow the flow
switch to be tested without discharging water out of the system. The test
shall ensure that water is in the pipe as well as ensure the integrity of the
paddle and trip stem assembly. The test is initiated by a separate test switch
developed specifically for the flow switch.
Auto Test
Switch
The test switch shall consist of a key-switch, momentary pushbutton switch and
LED. Activation of the key-switch shall enable the momentary push button
switch. Depressing the push button shall initiate the test of the flow-switch.
As the retard is being tested, the LED shall flash once per second until the
retard time expires. At that point the flow-switch shall conduct a test to
ensure compliance with the applicable UL standard for water-flow detection. If
the test is successful, the switch outputs shall activate for approximately
two seconds and automatically restore to normal. The LED on the test switch
shall momentarily go steady on, and then turn off allowing the key switch to
be turned off. An unsuccessful test shall be indicated by no activation of the
switch contacts and the test LED shall flash four times per second
continuously. The test can also be initiated by a Listed relay from a Listed
addressable FACP, however there would not be the LED to provide the visual
status indication. The single gang box test switch shall be a model ATC-1 for
testing a single device or ATC-4 for testing up to four devices, manufactured
by Potter Electric Signal Company LLC. Switch assembly shall be UL Listed and
FM Approved.
Potter Electric Signal Company, LLC
St. Louis, MO
Phone: 866-956-1211
www.pottersignal.com
firealarmresources.com
References
- Fire Alarm Resources | Download fire alarm documents
- Potter Electric: Fire Alarms & Fire Sprinkler Systems
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