Auto fill AWC reservoir when empty, but pause AWC

[markstubb]

So I currently have a NSW reservoir with a high and low float. I currently have AWC set to run M-F, and off on the weekends. I also set up AWC such that if the reservoir low float triggers, AWC is disabled.

What I want to add into this process is once the NSW reservoir is at low, disable AWC and initiate a fill up of the NSW reservoir from my RO system. The big thing is I want AWC to NOT be re enabled until I add salt to the reservoir and I'm not sure how I can do that.

I have a 24v solenoid on the RO system, have leak detectors, etc. What i'm struggling with is a way to notify AWC that I've added salt to the NSW reservoir after it's filled back up

[markstubb]

i was thinking maybe have a virtual outlet to control AWC and I could flip it to on (after adding salt and verifying salinity), then back to auto, but I'm not entirely sure if it would stay "on" when I switch it back to auto?

[Alain B]

You can do it with 2 VO , one to stop the water change and one to re-start it :

Alert_NSW_Lo (VO)

If NSWLo (OPEN-CLOSED) Then ON ( low water change switch )
If Output WC_Reset = ON Then OFF

WC_Reset (VO)

Set OFF

Had this line to your water change output :

If Output Alert_NSW_Lo = ON Then OFF

When the water change tank get low it will trigger the Alert output and it will stop the water change and it will stay OFF until you set the WC_Reset output momentarily to ON to re-start the system . Leave the output to AUTO .

[markstubb]

WC_Reset (VO)

Set OFF

Won't this go right back to off when i set it to ON, then back to auto?

[Alain B]

It will not if set to ON manually , when it is return to AUTO , then it will go OFF by itself . When set to ON manually it will be releasing the Alert output and re-enabling the water change .

[markstubb]

So the last question - how could I manually trigger the system to work? Set up a VO and leave it on manually until the NSW_H triggers or use RefillNSW and set it to ON manually?

Name NSW_Solenoid (solenoid from RO system)
Fallback OFF
Set OFF
If Output EmergencyOff = ON Then OFF
If NSW_L CLOSED Then ON
If Output RefillNSW = ON Then ON
If NSW_H OPEN Then OFF

Name EnableAWC (how i control if AWC is enabled or not)
Set OFF
Fallback OFF
If Output EmergencyOff = ON Then OFF
If DoW S-----S Then OFF
If NSW_L OPEN Then OFF
If Output RefillNSW = ON Then OFF

Name RefillNSW (same as Alert_NSW_Lo - thought I could use this as a manual trigger)
Set OFF
Fallback OFF
If NSW_L CLOSED Then ON
If Output AWC_Reset = ON Then OFF

Name AWCReset (the reset one to tell the system that i've added salt to NSW tank, only gets used if NSW_L gets activated causing an automated fill up of the NSW container)
Set OFF

[Alain B]

What do you use for water changed ?? A DOS ? Describe your installation ?

[markstubb]

Yep, a DOS

[Alain B]

Just add to you DOS programming , at the last line using advanced : If Output Alert_NSW_Lo = ON Then OFF . If you program the system the way i describe , water change will be made automatically untill you NSW reservor get empty , no need to had anything else . If you want to set an auto-refill with RODI , you need to add a few line of codes to your rodi valve output .

[markstubb]

This is what I have in my Dos heads now..
Fallback OFF
tdata 10:30:00,1,17,12,82,2,88,12,12,84,0,0,10,0
If Output EnableAWC = OFF Then OFF

[zombie]

I would use a when command and another virtual outlet or you risk doing your water change with RODI water instead of NSW.

AddSalt
Set OFF
If Outlet NSW_Solenoid = ON Then ON
When ON > 000:01 Then ON

Email
Other stuff
If Outlet AddSalt = ON Then ON

DOS advanced tab
If Outlet AddSalt = ON Then OFF


This will latch on the add salt outlet which will email you a reminder to add salt to the water and stop it's operation until you add salt and manually reset the outlet back to auto.



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