Post-2020 manufactured CW-H10 and CW-H15 Chlorinator testing, removal and replacement Climate Wizard


Climate Wizard post-2020 manufactured control system using PLC interface 

Climate Wizards (CW-H) incorporate a chlorinator that are designed to minimize bacterial levels within the coolers water tank
  • Chlorinator is active at all times the unit is operated in INDIRECT cooling mode, where the water level is above the bottom probe AND water conductivity is >1500µs/cm
  • Where water conductivity is <1500µs/cm for an extended period of time, a 24 hour tank drain cycle will run.
  • When the chlorinator is not running, either due to low salinity (water conductivity is <1500µs/cm), an active fault, or not being fitted, a 24-Hour Clean Water Drain routine runs as a back-up.  This routine completely drains the reservoir and refills with fresh water every 24-Hours acting as a back-up risk mitigate measure at the expense of increased water consumption.
Its important the chlorinator is fitted and operating correctly and should be checked at each quarterly service

WARNING!!! Do not operate the chlorinator out of water 

image

The yellow light on the PLC provides an early warning to a failed chlorinator 

image
image

A failed chlorinator will display FC 10 on the PLC, the PLC red error LED and the wall controller if fitted 
Note: The PLC can display multiple faults, if present as you will see in the video PLC fault display toggles between FC 10 and 3

You can check if chlorinator is fitted/connected from the PLC monitor screen

image

To disconnect a faulty/failed chlorinator:
  • Isolate power to cooler
  • Unplug the chlorinator from coolers PCB
  • Power back up cooler
  • Check on PLC that Cl Fit says "NO"
When the chlorinator is not running, either due to low salinity (water conductivity is <1500µs/cm), an active fault, or not being fitted, a 24-Hour Clean Water Drain routine runs as a back-up.  This routine completely drains the reservoir and refills with fresh water every 24-Hours acting as a back-up risk mitigate measure at the expense of increased water consumption.

To fit a new chlorinator:
  • Isolate power to the cooler
  • Remove the old disconnected chlorinator and fit and plug in the new chlorinator
  • Power back up cooler
  • Check on PLC that Cl Fit says "YES"

IMPORTANT INFORMATION!!!
Please read and ensure you are aware of the situation should you choose to remove chlorinator and run cooler without a chlorinator connected

The chlorinator on Climate Wizard products is used to mitigate against the risk of growth of fungus, spores, virus, microbes & bacterium (microorganisms) potentially dangerous to human health, including, but not limited to, Legionella spp., and Pseudomonas aeruginosa.

 

The level of risk largely dependent on external factors under which the cooler is operated, such as ambient air temperature, supply water quality and temperature, number of hours of use and frequency of maintenance.

 

In some regions, regulations require that evaporative air coolers be serviced at specific intervals. Ensure all maintenance is done in accordance with any local and national regulations.

 

The chlorinator is only effective and will only run when the reservoir water salinity is high enough (>1500uS/cm).   The chlorinator is turned off below this level.

 

Should the chlorinator reach end-of-life or a short circuit occur between the metal plates, the chlorinator will be turned off and a fault code will be logged.   The cooler will continue to run with an active chlorinator fault.

 

The cooler can continue to run without a chlorinator fitted.  Upon power being applied, the cooler checks for the presence of the chlorinator and only runs the chlorinator logic if one is detected.  If the chlorinator is removed whilst the cooler is powered on a fault code will be logged.

 

When the chlorinator is not running, either due to low salinity (water conductivity is <1500µs/cm), an active fault, or not being fitted, a 24-Hour Clean Water Drain routine runs as a back-up.  This routine completely drains the reservoir and refills with fresh water every 24-Hours acting as a back-up risk mitigate measure at the expense of increased water consumption.

 

Due to natural electro-mechanical wear of the plates, the lifespan of a chlorinator is finite and directly proportional to cooler run hours and frequency of cleaning.  Chlorinators which reach end-of-life should be replaced as soon as practical.  

 

It is a condition of warranty cover that customers comply with all the cooler maintenance and service requirements set out in the product manual.