Step By Step; Automatic Dosing O2 (Bayrosoft ® ); Basic Concept; Main Dosing - Bayrol PoolManager Chlorine User Manual

13.5.1

Step by step

1. Bring the pool to the desired chlorine / bromine level via manual
dosing or manual addition of chlorine or bromine. It's best to add
the required volume in multiple increments and to check the value
repeatedly using DPD measurements.
2. After the desired chlorine or bromine value has been set in the
pool and checked via DPD measurement, observe the redox
value shown on the PoolManager
It will rise due to the addition of chlorine or bromine.
3. Wait until the displayed value has stabilised. It should stop
experiencing relevant changes within 10-15 minutes.
4. The redox value shown corresponds to the previously configured
chlorine / bromine value in the pool. Thus, configure the redox
value shown as the setpoint for redox control.
5. Redox control will then maintain the redox value at the configured
setpoint, simultaneously providing for a constant chlorine /
bromine value in the pool.
IMPORTANT NOTICE!
Redox electrode stabilisation
Depending on water quality and the state of the
electrode, it can occur that the redox electrode reacts
very slowly when reinserted or when moved from the
buffer solution back into the measuring water after
calibration. In disadvantageous conditions, it may take
up to 24 hours for the measured redox value to
stabilise and be displayed correctly.
The correct redox value cannot be read and applied as
the setpoint until after stabilisation has occurred.
Recommendations:
Insert a new redox electrode into the measuring water
circuit as early as possible. Then, it will be able to
stabilise even if the final chlorine / bromine value is not
yet configured.
Observe the redox value for at least 15 minutes. The
redox value cannot be considered to be sufficiently
stable until the change over that time frame is max. 1-2
mV.
Even if the value no longer changes within 15 minutes,
under certain circumstances it may very slowly rise up
to 20 or 30 mV over the next 24 hours. Therefore,
check redox control again a few days after
commissioning. Perform a DPD measurement and
optimise the configured redox setpoint as needed.
14 Automatic dosing O2 (Bayrosoft
INFO
This section applies for the model
PoolManager ® O2 only.
14.1

Basic concept

Adding the optimal volume of Bayrosoft
is executed in multiple automatic dosings per week. The main dosing
is performed on a specific chosen weekday, which provides for a high
Bayrosoft ® concentration and therefore for optimal disinfection. Then
additional intermediate dosings are performed throughout the course
of a week as needed in order to maintain the oxygen level
continuously over the requisite minimum value that ensures safe and
reliable disinfection.
The volumes for the main dosing and the intermediate dosings are
automatically adjusted to the average pool temperature in order to
compensate for heavier product attrition at higher temperatures. This
function is called temperature compensation.
® .
)
®
into the swimming pool water
®
The recommended setting for the basic dosing amount is 0.5 litres per
10m³ of pool volume.
14.1.1

Main dosing

The main dosing is performed on a specific weekday, the main dosing
day. The volume of Bayrosoft dosed on that day is based on the
®
programmed basic dosing amount. However, depending on the water
temperature measured, the actual dose amount may be increased by
a certain factor. This mechanism is called temperature compensation.
The dose amount is corrected such that the increasing product
consumption that occurs with increasing temperature is compensated.
The factor used to increase the programmed dosing amount is given in
the following table:
Average temperature value from the previous week
24°C 25°C 26°C 27°C 28°C 29°C 30°C 31°C 32°C >32°C
Factor 1.00 1.06 1.10 1.15 1.20 1.28 1.40 1.57 1.80
No temperature compensation is performed for water temperatures
under 24 °C.
For water temperatures over 32 °C, double the programmed dosing
amount is added.
Example:
Programmed basic dosing amount of 2.0 litres,
water temperature at 28 °C:
Main dosing amount = 2.0 litres x factor of 1.20 = 2.40 litres
The main dosing is performed on the programmed dosing weekday at
midnight.
If the flow signal is missing (e.g. due to circulation being turned off) or
if there is an alarm, then main dosing will be delayed. It will be
performed at the earliest possible point in time. A main dosing is
discarded at the next main dosing day, if it could not be performed up
until that point, e.g. due to continuous alarms.
14.1.2

Refresh dosing

Throughout the course of a week until the next main dosing, the
volume of effective Bayrosoft
®
consumption increases with higher temperatures. To counteract this
and to always guarantee the optimum volume of Bayrosoft
water, refresh dosings are performed after 1/3 and after 2/3 of the
week (1/3 week = 56 hours = 2 days and 8 hours).
The refresh dosing amount depends on the following factors:

Programmed basic dosing amount

Average water temperature measured
(for the prior 1/3 week)

Temperature compensation setting (off / normal / high)
When temperature compensation is turned off, no refresh dosing is
performed.
When temperature compensation is turned on, the refresh dosing
amount is determined by multiplying the programmed basic dosing
amount by a temperature-dependent factor:
Average temperature value from the prior 1/3 week
 24°C 24-26°C 26-28°C 28-30°C > 30°C
Factor for normal 0
temperature
compensation
Factor for high 0
temperature
compensation
For temperatures under 24 °C, refresh dosing is not performed (factor
= 0)
2.00
in the water diminishes. Product
in the
®
0.1 0.2 0.3 0.4
0.2 0.4 0.6 0.8
37