Register free!
Search
 
     

Click for Weather
Reply
 
Thread Tools Display Modes
  #31  
Old 06-24-2011, 11:20 PM
GreenGuysLC GreenGuysLC is offline
LawnSite Senior Member
 
Join Date: Apr 2010
Location: Killen Al
Posts: 266
And now the current situation ... at the controller .. I ohm each station and return 26 to 41 on all zones except the one still missing ..ohms .37 I have tried to do a quick find and fix by jumping another working line over to the missing line at a valve box half way... still no valve activation.

Picture attached .. red indicates the water and wire path. yellow star is 7 of the 8 valves. Orange circles the heads not operating because of lost valve. All the south line is in juniper. I suspect with the heads not operating the valve is in the juniper near the other valve that is feeding the south most lawn. It seems the installer didnt place valves inside the parking area. The valve for the heads on north side of building is the north set of valves.

Any help on scratching head is apreciated. Pro 700 hasnt gave me even a hint of a lead. Tracks around without any noticible change ... jI would normally at this point dig from the first head back to the main pipe .. which I would think would be a short distance .. but it is in juniper .. and diggin anit happenin..lol

Oh yeah . the black box on east wall is the cntroller location .. INSIDE THE STORE
Attached Images
 
Reply With Quote
  #32  
Old 06-24-2011, 11:29 PM
Wet_Boots's Avatar
Wet_Boots Wet_Boots is online now
LawnSite Fanatic
 
Join Date: Mar 2005
Location: metro NYC
Posts: 40,072
What if you unplugged the controller and connected the transmitter to the system common outside? Maybe there is some continuity between the common and the missing solenoid.
Reply With Quote
  #33  
Old 06-24-2011, 11:37 PM
GreenGuysLC GreenGuysLC is offline
LawnSite Senior Member
 
Join Date: Apr 2010
Location: Killen Al
Posts: 266
Ok.. I can try that... ran out of time on that job today and plan to run some other test when I go back . That will def be one of them. I cant imagine the wire being broken .. I can see it connected at all the located valves .. and if it had gotten broke .. I would think the others would have too. I am pretty sure the wires leave the building to the north and then loop around from there. Almost certian I will find it near the other valve in the juniper on south side ... that is where the first head is that is not operating.
Reply With Quote
  #34  
Old 06-25-2011, 08:56 AM
Sprinkus's Avatar
Sprinkus Sprinkus is offline
LawnSite Bronze Member
 
Join Date: Dec 2008
Location: San Antonio, TX
Posts: 1,823
Is that .37 ohms or 37 ohms?

Also, it's possible that the missing valve is right next to another one that you've already found.
You might try disconnecting the solenoid hot wire, (at the valve), of the valve(s) closest to the area that isn't working and tracking again.

If the solenoid reading is 37 ohms and not .37 then connect the Pro 700 (I have one too) as I described previously and you should be easily able to pinpoint the valve location.
Reply With Quote
  #35  
Old 06-25-2011, 09:04 AM
AI Inc's Avatar
AI Inc AI Inc is offline
LawnSite Fanatic
 
Join Date: Dec 2007
Location: Southern NH
Posts: 21,653
Quote:
Originally Posted by Sprinkus View Post
Also, it's possible that the missing valve is right next to another one that you've already found.
.
yep, been there before.
__________________
Reply With Quote
  #36  
Old 06-25-2011, 06:16 PM
GreenGuysLC GreenGuysLC is offline
LawnSite Senior Member
 
Join Date: Apr 2010
Location: Killen Al
Posts: 266
No it is reading POINT 37. .37 I suspected that it may be near the other valve .. but looking under the juniper that is ft and half tall is not easy . That is where my intense search will continue next week . I feel It has got to be right there close by. I am going to track the common wire and see where that takes me.
Reply With Quote
  #37  
Old 06-25-2011, 07:48 PM
bcg bcg is offline
LawnSite Bronze Member
 
Join Date: Mar 2005
Location: Tx
Posts: 1,774
The fastest way to find a shorted valve is to hook the red wire from the 700 transmitter to the zone wire and the black to the common. Follow your wire path, you'll have nothing (no null to signal over the wire) until you pass the solenoid. Once you start to get a tracking signal again, you need to back up until it disappears and that's your valve. Often the shorted solenoid will scream at you as you pass it so there's no mistaking it's location.
Reply With Quote
  #38  
Old 06-26-2011, 01:34 PM
1idejim's Avatar
1idejim 1idejim is online now
LawnSite Fanatic
 
Join Date: Jul 2009
Location: State of Jefferson
Posts: 6,952
Quote:
Originally Posted by Mike Leary View Post
In my case, where I've got some problems, do I have to isolate the common from the ton of ganged commons I have?
mike i always isolate and group like wires, match the common to the wires they service.

on your mega's, i know that you know, that i know that you're too damned picky not to have done this at install.

what i would do in your case is, measure short to earth from both ends. i would also close the loop and take a resistance measurement from each end. if you have an earth fault, the STE measurement will show it, if you have a direct short, the loop measurement will tell you which end it is closest to.

i use my TDR for this, works good most of the time.
Reply With Quote
  #39  
Old 06-27-2011, 08:41 AM
Sprinkus's Avatar
Sprinkus Sprinkus is offline
LawnSite Bronze Member
 
Join Date: Dec 2008
Location: San Antonio, TX
Posts: 1,823
Here's the answer from Armadatech regarding my inquiry about hooking up the Pro 700 directly to the valve hot and common.

body: Question:
Is it safe to connect the Pro 700 directly to the solenoid wiring to pinpoint the location of a valve?
To state more clearly, is it ok to connect the red wire to the valve hot and the black wire to the valve common of a valve at the controller?

Answer from Armadatech:
Yes. Keep the power level low as this method does not introduce a lot of resistance and you don't generally need a lot of power. Overpowering just drains the battery faster.

Thanks
Reply With Quote
  #40  
Old 06-28-2011, 11:03 AM
GreenGuysLC GreenGuysLC is offline
LawnSite Senior Member
 
Join Date: Apr 2010
Location: Killen Al
Posts: 266
Quote:
Originally Posted by Sprinkus View Post
Here's the answer from Armadatech regarding my inquiry about hooking up the Pro 700 directly to the valve hot and common.

body: Question:
Is it safe to connect the Pro 700 directly to the solenoid wiring to pinpoint the location of a valve?
To state more clearly, is it ok to connect the red wire to the valve hot and the black wire to the valve common of a valve at the controller?

Answer from Armadatech:
Yes. Keep the power level low as this method does not introduce a lot of resistance and you don't generally need a lot of power. Overpowering just drains the battery faster.

Thanks
Thanks Sprinkus. I have not returned to the property as of yet. We are getting rain by the truck loads today so not too concerned about the system today. I am gonna try to follow the common first and If no luck .. make a long ground and hook to the controller as you have mentioned. I will not let this one valve beat me! lol

BTW ... Pro 700 found a use in my basement two nights ago. I have two air conditioners (split units) with condensers in a closet in the basement .. drain pipes from both go into a 6inch pipe that goes under concrete floor and out to the back yard. Apparently the outlet had become blocked , water was dumping into my basement floor, and I didnt know for sure where it came out. dug where I thought and no luck ... Then I thought .. what if I snake a wire through the PVC .... and track it!!!! :-) Worked like a charm.
Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump






Powered by vBulletin® Version 3.8.6
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Copyright ©1998 - 2012, LawnSite.comô - Moose River Media
All times are GMT -4. The time now is 01:11 AM.

Page generated in 0.10765 seconds with 8 queries