Register free!
Search
 
     

Click for Weather
Reply
 
Thread Tools Display Modes
  #31  
Old 07-02-2013, 09:40 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 irritation View Post
The 14ga common was not colored differently and wired incorrectly.
The 14 ga wiring was eliminated without question in the first few minutes.

Testing all pointed toward the multistrand.
Posted via Mobile Device
Reply With Quote
  #32  
Old 07-02-2013, 09:47 PM
irritation's Avatar
irritation irritation is offline
LawnSite Silver Member
 
Join Date: Jul 2006
Location: Indianapolis, IN
Posts: 2,587
Wired rain sensor only tied into one of the commons.
Reply With Quote
  #33  
Old 07-02-2013, 10:13 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 irritation View Post
Wired rain sensor only tied into one of the commons.
No sensor and bypass selected at the clock.
Posted via Mobile Device
Reply With Quote
  #34  
Old 07-02-2013, 11:12 PM
jcr4au jcr4au is online now
LawnSite Member
 
Join Date: Jul 2004
Location: The dry part of Texas
Posts: 32
Multiple valves run on one control wire?
Reply With Quote
  #35  
Old 07-02-2013, 11:29 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 jcr4au View Post
Multiple valves run on one control wire?
Most clocks will support 2 valves and a MV.

When multiple valves are wired in parallel the resistance will be equally divided between the solenoids.

Valves wired in series will measure the sum of all solenoids.
Posted via Mobile Device
Reply With Quote
  #36  
Old 07-02-2013, 11:32 PM
jbell36 jbell36 is offline
LawnSite Bronze Member
 
Join Date: Feb 2008
Location: KANSAS
Posts: 1,220
my next guess will be #4 common tied into #5...

No? ok, i'll get working on my next guess..
Reply With Quote
  #37  
Old 07-03-2013, 01:40 AM
1idejim's Avatar
1idejim 1idejim is online now
LawnSite Fanatic
 
Join Date: Jul 2009
Location: State of Jefferson
Posts: 6,952
I said that this was an interesting find, i didn't say that it made total sense. Here goes:

I eliminated the nos. 1 & 2 stations because they measured within range, shared continuity with only themselves and passed the short to earth measurements.

That left me with 6 stations to work with.

When testing the resistance on both commons to the stations i was just looking for a break in continuity, what i got was a series of measurements that made me think taking a late Sunday afternoon gig may not have been as much fun as i thought it would be.

I separated the commons and tested each against the terminal strip and got continuity on both commons to all stations. Now i am really thinking this job was a bad idea.

I labled the commons, counted the wires coming into the clock and the used wires and come up with 11 separate valves on the multi runs. 1 + 1 + 11 = 13 valves on 8 stations.

I wrote all of the measurements down for each station in relation to their common (those i posted) and started shaking my head.

3-7-8 seemed to be either the problem or the result of the problem with 100 ohms on com 1 and near 60 ohms on com 2

4-5-6 seemed pretty close to ganged pairs on com 1 but spread to a 50+ ohm difference on com 2.

Since all of the measurements were pretty much out of the ordinary i began looking for either a pattern or a break in pattern.

Station 6 broke the pattern. I had a wider range than the others, was the only station with a single wire and i just felt that since i have to start somewher i may as well start with 6.

I took the battery out of the clock (it was fairly new) and started bumping the stations with it.

1 & 2 were front yard rotors and functioned well.

3 was in the front yard on the south of the drive. 2 zones ganged at the clock, bumped them separate and together. Worked well.

Repeted this on 4 & 5 with the same results.

When i bumped 6 only 1/2 of the zone watered. The owner was there to tell me what was going on.

7 & 8 worked well but i couldn't bump both valves on either at the same time.

I found the VB's with the station 6 valves in them. One of them was a valve that i located previously. The HO repaired the valve and wired it in series and since it was on a single wire that ran through it, it was easy to ID.

While i was rewiring the valve i rewired all of the splices in the box.

That is when i found the 3rd common and it supported valves for stations 3-7-8.

Went to the controller and fired all of the stations manually from the clock.

I then did something stupid and set up a test program, ran it and did not erase any of the programs.

Freaking thing kept starting over. When i called to see if it worked ok the HO said she shut it down after the second cycle. I stopped by and reset the clock and all is well.

I don't know why the system did not work at all before i fooled with it, why it worked afterwards, why i got lucky if i did.

That is the story, i am sticking to it. BTW there wound up being 14 valves
Posted via Mobile Device

Last edited by 1idejim; 07-03-2013 at 01:46 AM.
Reply With Quote
  #38  
Old 07-03-2013, 01:58 AM
1idejim's Avatar
1idejim 1idejim is online now
LawnSite Fanatic
 
Join Date: Jul 2009
Location: State of Jefferson
Posts: 6,952
As an afterthought

3= 12
4=10
5=18
6=12
7=16
8=16

When i measured the stations with the commons connected and my DMM no longer hummed on 6-7-8.

Station 6 was split between 2 VBs and one of them was the closest to the controller.
Posted via Mobile Device
Reply With Quote
  #39  
Old 07-03-2013, 06:34 AM
Wet_Boots's Avatar
Wet_Boots Wet_Boots is online now
LawnSite Fanatic
 
Join Date: Mar 2005
Location: metro NYC
Posts: 40,072
For everyone who didn't guess right, we have a lovely consolation prize.
Reply With Quote
  #40  
Old 07-03-2013, 11:12 AM
jbell36 jbell36 is offline
LawnSite Bronze Member
 
Join Date: Feb 2008
Location: KANSAS
Posts: 1,220
Quote:
Originally Posted by jbell36 View Post
on second thought, it looks like zones 3,7, and 8 have a loose connection...
i mean, i guess i was on the right track...

this system sounds like a nightmare
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 10:01 PM.

Page generated in 0.07210 seconds with 9 queries