Skimmer Programming - Min Time vs. Defer

[GardenVariety]

Here's my current programming

Fallback ON
Set ON
If Sump_H OPEN Then OFF
If Sump_L CLOSED Then OFF
If Skim_H CLOSED Then OFF
If FeedA 005 Then OFF
Defer 005:00 Then ON


Will the last Defer line cause ALL above it to defer for 5 minutes then turn ON? I'm trying to figure out if I should put a min time statement to make sure the skimmer stays off for at least 5 minutes for all of the above.

[zombie]

Use defer for this case. Defer means wait to turn on until everything above it is back to normal (what you want). Min Time means if I turn off, I will stay off for at least 5 minutes (good for ATO, fans, chillers, not so much for skimmers).

There are some changes I would recommend though.

1. Add the line below and replace Return with the actual name of your return pump.

If Outlet Return = OFF Then OFF

Your low switch should catch this issue, but this will make sure it's always off if your return is off.


2. Unless you intend to have the skimmer off for 10 minutes after a feed cycle ends, change the 005 in the feed line to 000.



You might be an engineer if...You have no life and can prove it mathematically.

[GardenVariety]

Use defer for this case. Defer means wait to turn on until everything above it is back to normal (what you want). Min Time means if I turn off, I will stay off for at least 5 minutes (good for ATO, fans, chillers, not so much for skimmers).

There are some changes I would recommend though.

1. Add the line below and replace Return with the actual name of your return pump.

If Outlet Return = OFF Then OFF

Your low switch should catch this issue, but this will make sure it's always off if your return is off.


2. Unless you intend to have the skimmer off for 10 minutes after a feed cycle ends, change the 005 in the feed line to 000.



You might be an engineer if...You have no life and can prove it mathematically.

Thanks for the help

[GardenVariety]

Use defer for this case. Defer means wait to turn on until everything above it is back to normal (what you want). Min Time means if I turn off, I will stay off for at least 5 minutes (good for ATO, fans, chillers, not so much for skimmers).

There are some changes I would recommend though.

1. Add the line below and replace Return with the actual name of your return pump.

If Outlet Return = OFF Then OFF

Your low switch should catch this issue, but this will make sure it's always off if your return is off.


2. Unless you intend to have the skimmer off for 10 minutes after a feed cycle ends, change the 005 in the feed line to 000.



You might be an engineer if...You have no life and can prove it mathematically.

Fallback OFF
Set ON
If Output Return_Pump = OFF Then OFF
Defer 005:00 Then ON
If FeedA 000 Then OFF
Defer 005:00 Then ON
If Sump_H OPEN Then OFF

This is my ATO. Should I erase both defer lines and just put one

Min Time 5:00 Then OFF

[zombie]

Use this. Defer applies to the entire outlet so you can only use 1

Fallback OFF
Set ON
If Output Return_Pump = OFF Then OFF
If FeedA 000 Then OFF
If Sump_H OPEN Then OFF
Defer 005:00 Then ON



You might be an engineer if...You have no life and can prove it mathematically.

[GardenVariety]

Use this. Defer applies to the entire outlet so you can only use 1

Fallback OFF
Set ON
If Output Return_Pump = OFF Then OFF
If FeedA 000 Then OFF
If Sump_H OPEN Then OFF
Defer 005:00 Then ON



You might be an engineer if...You have no life and can prove it mathematically.

Thanks again.