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6
Operating Pool Relax
6.1
Overview of Features
Display and Operation
High resolution wide format 4,3“ colour touch screen (480 x 272 pixels)
Simple operation via touch screen
Clear menu structure
Many different menu languages included
Screen with automatic switch-off to save energy (adjustable)
Context sensitive online help via “Help” hotkey
Measuring and control
Proportional control for all control modules
All important control parameters can be programmed individually for each control module
(setpoint, max. dosing time, proportional range, dead zone, basic dosing (mV) cycle time, min. on / off time)
Continuous display of current dosing rate
Conversion of all measurements by high resolution 10-bit analogue/digital converters
1 or 2 point calibration for pH
1point calibration for redox (mV) and temperature
Safety functions
Comprehensive monitoring and alarm functions
Upper and lower alarms, flow alarm, level alarms, dosing time alarms, battery alarm, power-on delay
Automatic blocking of dosing during critical alarm conditions, during power-on delay
Alarm notification through:
display
acoustic alarm signal
alarm relay
Continuous monitoring of the correct program sequence and automatic reset in the event of an error (watchdog function)
Double dosing pump lock
Pool Relax is equipped with a double pump lock that offers a very high level of safety.
The flow switch in the measurement cell ensures that the dosing pumps can only be switched on if a sufficient amount of water is
flowing through the measurement cell.
In addition, the dosing pumps are supplied with the line voltage through a separate power supply. The power supply must be
switched in such a manner that the dosing pumps are only supplied with current when the circulating pump is running.
In this way, dangerous dosing into stationary water is prevented even if one of the two fuses should blow due to external causes.
Alternating switching on of the dosing pumps
As soon as a dosing pump starts running, the other pump is blocked. This prevents the agents for raising or lowering the pH from
being dosed together with the water disinfection agent (Chloriliquide or Bayrosoft
®
).
Because perfect water disinfection is only possible at a pH value of 7.2, dosing of the agents for raising and lowering the pH takes
precedence over dosing of the water disinfection agent.
HAZARD!
Emission of chlorine gas in case of contact between Chloriliquide and pH-Minus
Poisonous chlorine gas is emitted if Chloriliquide and pH-Minus get in contact.
Potential consequence:
Severe or possibly fatal injury, serious damage to property.
Make sure that Chloriliquide and pH-Minus never get in contact.
Make sure that Chloriliquide and pH-Minus are never dosed into non-circulated water.
The power supply for the dosing pumps must absolutely be connected in a way, which guarantees that the
dosing pumps are only powered when the circulation pump is running.