Monitoring Hydroguard Alarms - Blue I HydroGuard HG-302 Manual De Uso

• Start-up and Preventive Maintenance: A preventative inspection and cleaning of components should be
completed whenever the controller is restarted after a long (> 2 week) downtime. Likewise, the controller
has several mechanical components that will wear-out over time. To prevent future problems, these
components should be check and/or replaced periodically. This is most easily accomplished at initial
start-up, prior to the beginning of the pool season.
• Troubleshooting: Occasionally problems will occur with the controller readings or chemical dosing.
These problems are most often simple to correct. The troubleshooting section provides an outline to
follow to help correct the problems easily.
5.1

Monitoring HydroGuard Alarms

HydroGuard issues alarms when it detects chemical levels that are above or below the allowed range. Every
alarm is automatically displayed in the LCD status display and logged in the data logger. Most deviations in
chemical levels, however, are automatically corrected. Thus, the internal alarms do not immediately activate
an external alarm. A delay mechanism prevents false alarms from minor deviations that were automatically
corrected. The external alarm is only activated after an internal alarm has been continuously active for a
certain period of time, as defined by the operator. The Alarm Delay command in the Operator menu sets the
number of seconds HydroGuard waits before closing Relay 5, the relay that operates the external alarm.
Only one alarm is shown at a time based on importance and the order in which it should be fixed. For
example, if the pH is high and the ORP is low, only the pH alarm will be indicated since lowering the pH will
likely also correct the low ORP. All of the alarms are presented in Table 7.
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