Thank you, Russell. Have you had any issues with false starts or any other maintenance issues? The contractor I am working with is trying to investigate all possible complications this arrangement might cause.
Micah Davis, SET NICET #124745 Water Based Systems Layout, Level IV Dynamic Fire Designs Mail: [email protected] Mobile: 931-242-1299 www.dynamicfiredesigns.com<http://dynamicfiredesigns.com> Dynamic Fire Designs * 247 Winthrop Dr. * Spring Hill * FL * 34609 This message is confidential. It may also be privileged or otherwise protected by work product immunity or other legal rules. If you have received it by mistake, please let us know by e-mail reply and delete it from your system; you may not copy this message or disclose its contents to anyone. The integrity and security of this message cannot be guaranteed on the Internet. From: Sprinklerforum <[email protected]> On Behalf Of Russell Gregory Sent: Tuesday, April 30, 2019 10:43 PM To: [email protected] Subject: RE: Prestart Pump - Preaction This is the standard arrangement on the Tyco Quell/Vanquish Sprinkler System where we start the pump on the 1st stage detection on the Linear Heat Detection. A Potter panel is used for control. We also have the pump starting on drop in pressure as a backup. Cheers. Russell Gregory Christchurch New Zealand From: Sprinklerforum [mailto:[email protected]] On Behalf Of Micah Davis, SET Sent: Tuesday, 30 April 2019 9:27 PM To: [email protected]<mailto:[email protected]> Subject: Prestart Pump - Preaction Has anyone setup a pump on a preaction system to prestart at device signal to get it prestarted before valve trip? I have several large preaction systems and am having issues with water delivery times. I need to shave off a few seconds and noticed that the program gives an option to have the pump prestart. We are required on this project to provide the water delivery calculations, so I cannot use 7.2.3.4 to avoid the water delivery time requirement. My specific question is, does anyone know of any concerns the contractor should have for doing this? Are there any operations/maintenance concerns? Are false trips a problem? Micah Davis, SET NICET #124745 Water Based Systems Layout, Level IV Dynamic Fire Designs Mail: [email protected]<mailto:[email protected]> Mobile: 931-242-1299 www.dynamicfiredesigns.com<http://dynamicfiredesigns.com> Dynamic Fire Designs * 247 Winthrop Dr. * Spring Hill * FL * 34609 This message is confidential. It may also be privileged or otherwise protected by work product immunity or other legal rules. If you have received it by mistake, please let us know by e-mail reply and delete it from your system; you may not copy this message or disclose its contents to anyone. The integrity and security of this message cannot be guaranteed on the Internet.
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