Intelligent Dosing Monitoring - Bayrol PoolManager Chlorine User Manual

INFO
Pool volume and dosing rate
The default values for the minimum dosing rate are
oriented towards the following general conditions:

Assuming a pool volume ca. 40 m³

dosing pump output ca. 1.5 l/h
For larger pool volumes in relation to the dosing pump
output, the minimum dosing rate generally has to be
increased.
For smaller pool volumes in relation to dosing pump
output, the minimum dosing rate generally has to be
reduced.
INFO
Effect of the minimum dosing rate
The minimum dosing rate should be increased in the
following cases:

When the setpoint is not reached, or reached only
very slowly
The minimum dosing rate should be decreased in the
following cases:

When the control system exceeds the setpoint, i.e.
overdosage
12.4.6

Intelligent dosing monitoring

If the current measured value deviates from the desired setpoint, then
PoolManager will dose maintenance product into the pool water in
®
order to offset the deviation. In this case, it should be expected that
the measured value approaches the setpoint.
PoolManager checks in predefined intervals whether the setpoint is
®
actually approached as expected. To do so, PoolManager
various criteria based on several conditions. If those criteria for
approaching the setpoint are met, then dosing will be continued.
If those criteria are not met, then PoolManager
alarm and block dosing. In this case, there is presumably either a
problem or the current settings are not appropriate for the pool. In the
event of a dosing alarm, the entire system should be inspected for
potential problems.
The dosing alarm and the dosing block are ended by pressing the
corresponding button to acknowledge the dosing alarm in the alarm
overview.
You can set the interval for dosing monitoring in [min] in the menu. At
the end of each interval, a test is executed on whether the setpoint is
being approached according to the criteria.
INFO
Configuring dosing monitoring
For most applications, the default setting for the dosing
monitoring interval should deliver good results.
You should only increase the preconfigured interval if
unjustified dosing alarms are repeatedly reported. In
general, this will only happen if the pool is reacting
extremely slowly, or if there is some other problem.
In this case, the entire installation should be checked,
especially circulation in the pool.
12.4.7 Deadzone
An activated deadzone ensures that dosage is not started for very
small deviations from the setpoint, but rather only after the current
measured value departs from the deadzone. The deadzone is a
tolerance range around the setpoint.
The following figure shows how the control system performs in the
deadzone using pH control as an example.
1
2
3
4
5
6
7
® checks
will report a dosing
®
12.4.8
The dosing cycle is a defined, fixed time interval in which the dosing
pumps are turned on and off depending on the current dosing rate.
The sum of switch-on duration and switch-off duration is always
constant and equates to the dosing cycle.
A graphic presentation of the dosing cycle can be found in the section
dosing rate above.
12.4.9
As already described in the Water maintenance section, the pH control
system can be run in a pH-reducing, pH-elevating, or bi-directional
manner depending on water composition.
The following image shows an example for control system output in
the event of bi-directional dosing.
Dosing rate in %
Measured pH value
Configured setpoint pH 7.20
Minimum dosing rate (5 %)
Deadzone (0.05pH  pH 7.20...7.25)
Dosage does not begin until the measured value departs from
the deadzone
When approaching the setpoint, dosage will not stop when
entering the deadzone but rather upon reaching the setpoint.
INFO
Usage of the deadzone
The standard setting for the deadzone is 0, i.e. the
deadzone is not active.
It is particularly recommended to activate the deadzone
for bi-directional pH control in order to avoid constant
alternating triggering of the pH minus and pH plus
dosing pumps.
Dosing cycle
INFO
Notes on configuring the dosing cycle
For most applications, the standard setting for the
dosing cycle should deliver good results.
For very small pools, such as whirlpools, a shorter
dosing cycle may deliver better results under certain
circumstances as the control system can react to
changes more quickly.
Dosing direction
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