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Water. Quality. Secured
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against chemical additions to a pool in the case of no flow; however, this flow switch
alone does not eliminate the need for additional safety equipment on the dosing
systems directly.
CAUTION
Electrical connections in this section are ONLY recommendations. All electrical
connections should comply with National Electrical code (NEC) and all local
regulations.
4.5
Wiring to Dosing Systems
HydroGuard controls chemical dosing systems using a series of electronic relays
that start and stop the dosing pumps. Each relay opens and closes a switch that
activates a separate pump or piece of equipment.
The following table lists the relays and the systems that they activate:
4.5.1
Wiring the Turbidity Relay
Turn off all power supplies to the controller.
Wiring of the NTU (turbidity relay) is identical to wiring of all other relays and should
be connected to a pump-dependent (interlocked) power supply.
The line (live) wire of the pump-dependent power source connects to the connection
labeled Common on the NTU relay. The line wire of the controlled external turbidity