Hayward AquaRite+ AU Master Installation And Setup page 11

OPERATION CONTINUED
With the Master and Slave units both turned on and operating, the Master unit will be trying to keep the ORP level of the
pool on the set point. If the Master unit cannot keep up with the chlorine demand it will call for the Slave chlorinator to be
turned on by closing the Aux 3 relay once the ORP level reaches 2% below the ORP set point. Once the Aux 3 relay closes,
and if the Flow Switch for the Slave unit is also closed, the Slave unit will begin to produce chlorine.
This is evident because on the Master unit display, there will be an "ON" next to the Redox level, and on the Slave unit the
display will change from a FLOW ALERT to a Polarity Informative Display (Pol 1 or Pol 2) with the actual chlorine production
rate being shown on the display.
Once the ORP/Redox set point has been met on the Master unit, it will then turn off the Slave unit by opening the Aux 3
relay.
The Slave unit is effectively a Master unit just being controlled differently so the chlorine output for this unit can still be
adjusted between 1-30 gr/hr as per the Owner's Manual supplied with the unit.
If a Master/Slave configuration is being installed on a pool/spa combo; using the Spa Flow Switch on the Master unit will
still allow for the chlorine output to automatically reduce to the set percentage. In this situation the Slave unit would still be
called to come on if the ORP/Redox level fell below 2% of the set point but would only be for a very short period of time.
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USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Page 11