Hayward omnihub Interlock for SWG->AcidPump

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T

Tkt2k

Silver Supporter
Apr 18, 2019
9
Chandler
Pool Size
11000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Hayward Aqua Rite (T-9)
Is there a way to create an interlock within the OmniHub to prevent the acid pump from injecting acid while the AquaRite is on? Under the "Equipment to Equipment" settings, I don’t see the SWG listed at all.

when the OmniLogic is configured to automatically dispense acid based on the pH sensor it dispenses acid regardless of the cell status

I will eventually create mutually exclusive schedules for the SWG and the Acid Pump (timed production/injection instead of sensor based) but I wanted to have the option to use the sensor to drive the acid at least ( ORP is erratic ).

Some experts on this forum suggest that injecting acid before the SWG while it’s operating can damage the plates. Others argue it’s unlikely to cause damage due to the high water-to-acid flow ratio, even at lower speeds (e.g., 35 GPM to 10 mL/min).

If it’s not possible to create an interlock and acid is injected before the SWG while it’s active, is there any real risk of damage to the cell?
the related posts I found are from years ago, Is anyone nowadays successfully injecting muriatic acid (MA) before an AquaRite via the OmniHub without issues ?

Thanks!
 
Thanks, I am using a seko pump model PPE000HA6001 its a fixed low speed low flow peristaltic pump (2.5GPD) it is connected to a hayward relay HLH485RELAY controlled by the omnihub
I read the Sense and Dispense and omni manuals but could not find any reference to interlocks with the SWG.. I could create theme based interlocks but that wouldn't work with the PH automation...

I guess this is only an issue if there is a problem injecting acid before the SWG while on... I wonder if it is even desirable to inject while producing to counteract the PH increase in the SWG chamber.
 
At this point, you are doing a science experiment.

Let us know how it goes.
 
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