Menu Feature Description - Blue I HydroGuard HG-302 Manual De Uso

4.5.1 Menu Feature Description

There are several features of the controller that are not immediately obvious from the menus.
Adaptive Chlorine Measurement Interval: The operator is able to select a minimum and maximum chlorine
measurement interval. The controller will automatically vary between these limits based on measurement
stability. An average measurement interval will be created between the minimum and maximum. The
controller uses an advanced algorithm to determine which of the three measurement intervals to use based
on the stability of the readings. In general, if the readings are unstable or are far below the set point, the
minimum interval will be used. As readings become more stable it will use the average or maximum interval
as appropriate.
Water Savings Mode: To minimize the amount of water passing through the colorimeter, the controller
operates in a water savings mode. The solenoid valve will open for 15 seconds to obtain a new a fresh
sample. The valve will close and the sample sequence will start. Once complete, the valve will remain open
for an additional 30 seconds to completely flush the sample cell.
ORP Emergency mode: If a problem occurs with the colorimeter (unclean cell, stuck piston, communication
error), or the customer runs out of reagents, the controller may be temporarily operated in ORP Emergency
Mode. This mode must be started manually, by scrolling to the ORP Emergency Mode Menu, entering the
password, and switching the mode to ON. If no colorimeter problem is present, the controller will not allow
this mode to be entered. When in ORP Emergency mode, the ORP set point will be used to control Relay 1
(primary Cl relay). When the problem is corrected, the controller will automatically resume operation in
normal mode. If not corrected after 3.5 days, the controller will stop feeding Cl.
Cl < 0.1 alarm option: Whenever the Cl measurement is < 0.1 ppm, the controller will disable relay 1 and
relay 2. This alarm is provided as an extra level of safety against over chlorination due to bleaching of
reagents. However, it complicates the start-up of the controller when the Cl level is very low. Therefore, this
alarm feature may be turned off. Blue I Technologies highly recommends that this alarm remain in use
except for start-up.
Cl and pH Overfeed timers: To prevent continued operation of equipment when a problem occurs, these
timers will disable the Cl or pH relays if the relay has been active for more than the selected time. An alarm
will be issued and the controller will need to be reset in order to restart the relay operation. If 0 is entered,
the feature is off.
Chlorine Averaging: This feature will only affect the displayed value; not the action of the controller. This
feature is intended primarily to prevent operators from making constant changes due to minor, normal
fluctuations in the measured chlorine level. Now, there is an option to have the average of the last 4
readings displayed on the screen or simply the previous reading. The controller will always act based on the
last reading regardless of this setting.
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