Automatic Backwash Valve F1Q1

[carlyai]

 

I rearranged our filters and had the water guy install 2 of these automatic backwash valves. 

Finished the installation late Saturday night so the water guys left with no real instructions and no handbook.

I thought all was OK but wifey says the filters aren't backwashing so she rang the water guy and he said it's the way I wanted it installed is the problem, something to do with the filters always full of water.

Before I had the submersible pump to the 3000L tank, then to 2 large filters, to a big blue filter, then to the house pump.

I asked the water guy if we would get better flow if we changed the setup to: submersible pump to 2 large filters, big blue filter, then tank and from the tank to the house pump. He said yes and installed it that way.

Now he and the wifey say it won't automatically backwash like I had it installed as the filters are always full of water.

He's coming Tuesday to change things, but why install it like that if it's not going to work properly?  Grrrrrr.

Anyone else installed automatic backwash valves and is my setup incorrect and how does the automatic backwash work?

Looking online for a manual.

 

[gamb00ler]

He just needed to shift the blame to you.  His answer makes no sense.

[Fruit Trader]

I am guessing you have this problem. The backwash requires constant pressure at the filter inlet and if your well pump is operating off a float switch the backwash can only work when the float switch is calling the well pump.

We have similar arrangement on a RO system sediment filter where the back wash controller calls the feed pump directly during its backwash cycle.

 

 

 

Manual for you controller

https://ventar.ru/sites/default/files/Runxin_MANUAL_Auto_55_65_75_Q_201907_EN_EXT.pdf
 

[carlyai]

 

 

8 minutes ago, Fruit Trader said:

I am guessing you have this problem. The backwash requires constant pressure at the filter inlet and if your well pump is operating off a float switch the backwash can only work when the float switch is calling the well pump.

We have similar arrangement on a RO system sediment filter where the back wash controller calls the feed pump directly during its backwash cycle.

 

 

 

Manual for you controller

https://ventar.ru/sites/default/files/Runxin_MANUAL_Auto_55_65_75_Q_201907_EN_EXT.pdf
 

Thanks very much. 

Yes we have a float switch that signals the controller.

But why can't it then backwash when the submersible pump is on?

[Fruit Trader]

8 minutes ago, carlyai said:

But why can't it then backwash when the submersible pump is on?

 

Does the auto backwash override the float switch?

Something is really off here because why would someone install an auto backwash valve in such a way that it cant auto backwash unless there was an agreement to use the manual function only.
 

 

 

[carlyai]

53 minutes ago, Fruit Trader said:

 

Does the auto backwash override the float switch?

Something is really off here because why would someone install an auto backwash valve in such a way that it cant auto backwash unless there was an agreement to use the manual function only.
 

 

 

Got me.

I talked to the water guys when they came first for a look and one of the things I said was I want automatic backwashing as I keep forgetting to manually backwash. 

We have no brime or regenerative tanks only the automatic backwash on the magnesium tank and carbon tank.

Before I used to turn the pump off and manually switch from filter to backwash, turn the pump on until water clear, pump off, move switch to rinse. etc.

I don't see why this should be too difficult automatically.

I've read the handbook, thanks again for that, but will have to read it many more times to sink in.

Another thing I have found troubling is they charged me about B4000 per valve when they are only about usd 75.

[Fruit Trader]

1 hour ago, carlyai said:

Got me.

I talked to the water guys when they came first for a look and one of the things I said was I want automatic backwashing as I keep forgetting to manually backwash. 

We have no brime or regenerative tanks only the automatic backwash on the magnesium tank and carbon tank.

Before I used to turn the pump off and manually switch from filter to backwash, turn the pump on until water clear, pump off, move switch to rinse. etc.

I don't see why this should be too difficult automatically.

I've read the handbook, thanks again for that, but will have to read it many more times to sink in.

Another thing I have found troubling is they charged me about B4000 per valve when they are only about usd 75.

 

The automatic backwash valve should have auxiliary relay to call a feed pump which in your case is the well pump.

 

If this is the arrangement you have then automatic backwashing should work exactly the same as when you were doing it manually.

[carlyai]

1 hour ago, Fruit Trader said:

 

The automatic backwash valve should have auxiliary relay to call a feed pump which in your case is the well pump.

 

If this is the arrangement you have then automatic backwashing should work exactly the same as when you were doing it manually.

No this is not the arrangement. The float valve is in the tank and when the water drops it operates (s/c and o/c) and goes to the pump controller that starts the well pump.

No relays or connections from the automatic backwash to the pump controller.