Blue I HydroGuard HG-302 Manual De Uso página 103

The following table lists the relays and the dosing systems they control:
Relay
Cl 1
On/Off or proportional. Proportional controls pulse length or pulse frequency (PL/PF).
Cl 2
pH
On/Off or proportional. Proportional controls pulse length or pulse frequency (PL/PF).
Nephelometric Turbidity Units – Controls the injection of flocculants or coagulants. Used
NTU
Activates an external alarm when certain alarm types are registered and after the alarm
Alarm
Temperature
Caution: Electrical connections in this section are ONLY recommendations. All electrical
connections should comply with National Electrical code (NEC) and all local regulations.
Main chlorine system
Secondary chlorine system (On/Off only – no proportional control)
Acid or base dosing
only with the optional turbidity module.
delay time has expired.
Controls water temperature by activating the water heating system.
17
Control