So the question is... do I rebuild my check valve or do I replace my
sensor with a delay sensor or both?
On 10/12/2016 9:16 AM, rongreenman . wrote:
You cannot get all the air out of a tree system unless you can purge
every dead end. Still won't help if you have a check valve that isn't
holding. With a good check valve you will eventually get the system
side up to the highest surge the city system hits. After that the
surges won't push past the check and so no paddle movement.
On Wednesday, October 12, 2016, Mike Henke <[email protected]
<mailto:[email protected]>> wrote:
Barry,
Your check valve may not be holding the pressure in completely.
It's almost impossible to remove ALL the air. So now when your
pump turns on, water will flow into the system because of the air
pockets and activate the VS-SP.
We do not allow or recommend that the flowswitch be disassembled
in the field. There is a specific assembly method including torque
on the assembly screws to maintain product integrity.
Yes the VSR-ST will be your least expensive option. It was
designed with a union style coupling just for limited space
applications like this.
Kind Regards,
mike
Mike Henke CET
Sprinkler Product Manager
___________________________________________________
Potter Electric Signal Company, LLC
1609 Park 370 Place, St. Louis, MO 63042
phone: 800-325-3936 | direct: 314-595-6740
[email protected] <javascript:;> | www.pottersignal.com
<http://www.pottersignal.com>
-----Original Message-----
From: Sprinklerforum
[mailto:[email protected]
<javascript:;>] On Behalf Of Barry Levine
Sent: Wednesday, October 12, 2016 9:26 AM
To: [email protected] <javascript:;>
Subject: Re: Seeking false water flow alarm suggestions
I'm not on municipal water. I'm on a well, but when my 2HP
pressure pump kicks in, it does build pressure rapidly. I had to
replace all the sprinklers early on, due to a recall, so that
probably eliminated any air pockets... until this latest total
drain. I'm beginning to believe the only solution will be to buy a
VSR-ST. I was hoping to be able to just get a VSR-S but was told I
couldn't take it apart to screw it on, and as you can see there is
no room to rotate it on the fitting without a union. Is the VSR-ST
the most cost effective solution?
On 10/12/2016 6:59 AM, Mike Henke wrote:
> Barry,
>
> The unwanted waterflow alarms are caused by the fact that the
VS-SP does not have a retard and you are getting water surges
because you are connected to a municipal water supply and have
some air pockets in the sprinkler system.
>
> They are called unwanted alarms, not false alarms. The device is
doing what it is supposed to do, activate on a flow of water. The
problem is there is supposed to be a retard to prevent the alarms
caused by water surges.
>
> The solution is to replace the VS-SP with a flowswitch that has
a retard. This would be much less expensive and much easier than
trying to vent all air out through saddle valves.
>
> It is possible that if there is a check valve or BFP that can
hold pressure in the system that the unwanted alarms will
eventually stop after there are enough surges to build system
pressure up higher than the supply pressure.
> However, when you test the system, you will relieve all built up
pressure and you'll be back into the unwanted alarm issue.
>
> I'm guessing you never had unwanted alarms before because it was
either never tested or somehow there was no trapped air pockets in
it to allow for surges.
>
> The data sheet for the VS-SP specifically says that it does not
have a retard so it should not be used on systems with variable
pressure water supplies except in cases of elevator recall. The
VS-SP was designed specifically for elevator recall and sprinkler
systems supplied by a pump & tank.
>
> Flushing the system or letting it flow through the test valve
will not eliminate ALL the air pockets, even if the test valve is
at the most remote location.
>
> Change the flowswitch to the correct one.
>
> Kind Regards,
>
> mike
>
> Mike Henke CET
> Sprinkler Product Manager
> ___________________________________________________
>
>
>
> Potter Electric Signal Company, LLC
> 1609 Park 370 Place, St. Louis, MO 63042
> phone: 800-325-3936 | direct: 314-595-6740
>
> [email protected] <javascript:;> | www.pottersignal.com
<http://www.pottersignal.com>
>
> -----Original Message-----
> From: Sprinklerforum
> [mailto:[email protected]
<javascript:;>] On Behalf Of
> Barry Levine
> Sent: Wednesday, October 12, 2016 12:01 AM
> To: [email protected] <javascript:;>
> Subject: Seeking false water flow alarm suggestions
>
> I drained all the water from my pipes when I installed a new water
> filter/softener system in my home. After installing the new system,
> which replaced some 3/4" pipe with 1" pipe in my home water
system, I
> have been getting false alarms from my Potter Electric Signal Co
VS-SP
> flow sensor. I flushed my sprinkler system using the drain and the
> test valve, yet I believe some air pockets may still remain in
my two
> areas of coffered ceilings, where the sprinklers sit 1 foot
above the
> rest of the system. Potter recommends replacing the VS-SP with a
> VSR-ST. I'd prefer not spending the money to replace the sensor, but
> I'd like to hear from the professionals before I make that decision.
> I'm thinking there may be other solutions, especially since I never
> had any false alarms during the previous 20+ years. Possibly I could
> attach saddle valves between each of the two sprinklers in the two
> coffered ceilings and bleed the air out. Unfortunately, I've
never had
> any long-term luck with sad
dle valves, as they have all become inoperative over time. I've
attached a photo of my water system in case that might be helpful.
Feel free to ask any questions or offer any solutions. Thank you.
>
>
>
>
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