You are on this Page probably because -

You have a Salt water swimming pool that has a Salt Chlorinator fitted to the filtration system and you suspect that the unit is not working correctly and you are looking for some easy to follow troubleshooting advice ... or you may just be curious?.

You may also be considering converting your hand or auto dosed Chlorine swimming pool to a salt water sanitised pool ........Read More

Visit our Youtube Channel to view videos of a Salt Chlorinator being wet tested following workshop repairs ......


Salt cell comparisons

Salt Cell health

A dirty corroded Salt Cell VS a clean Salt Cell

This is one of the common problems that we come across. This probably accounts for 60% of all the problems we encounter with salt chlorinators. In the picture the cell on the LHS is "dead" Note the white calcification deposits on the plates and on the water sensor at the cap. Regular inspection and cleaning is required, even though these are self cleaning units. This is a common problem amongst all the salt chlorinator brands in the field. There is no exception.

Swimming pool Salt - 20kg bags 

Salt Chlorinator component Gallery - FYI 

Click on an image below to enlarge - 

Salt cell burnt cable connections

Burn't / Loose power cable connections on Salt chlorinator cell 

An expensive repair -

The picture shows you what can happen if proper pre-commissioning tests and checks have not been carried out correctly .

Salt chlorinator pump control timeclock

Salt chlorinator pump control timeclock 

Common replacements 

Stanley salt chlorinator controller

Stanley Salt Chlorinator controller 

A trusted Brand name -

Check out their amazing range of swimming pool equipment and pool accessories now. 

Astral salt chlorinator cell 6 series

Astral Salt chlorinator cell on test

6 Series 

Zodiac Tri Salt chlorinator on test

Zodiac Tri Salt Chlorinator controller with pH auto doser

Controls the pool water's pH level

Stanley salt chlorinator cable connections on the underside of controller

Plug connections below Stanley salt chlorinator controller

Cable connections 

Dirty salt chlorinator cell

All pro claimed "self cleaning" salt chlorinator cells require cleaning 

Our most common problem 

Workshop "Wet-Testing" of Salt chlorinator cell and controller after repairs - comprehensive tests are carried out. 

Workshop wet testing of a Salt Chlorinator following a repair. Our tank water is heated during the Winter months to simulate summer conditions.

Salt chlorinator testing in warm water


Workshop Manager

The majority of salt chlorinators presently in the field in New Zealand do not perform exactly as they should in pool water that is usually colder than 16degC. In July / August we have some pool water temperatures in the Auckland region that can drop as low as 9 - 11degC. This can be lower the further South you go.

From a design and technical properties salt water chlorinators do not work as they should in these cold water conditions and owners often suspect that their unit may be faulty, they disconnect and end up bringing them into our workshop for testing. To overcome this problem we keep our salt water tank at the most common salt level and we maintain around 20degC, prior to wet testing any chlorinator cell in the winter months. This way we can eliminate the winter "cold water" pool problem scenario associated with salt chlorinators ...... read more

The Relationship between your Salt Chlorinator and pool water temperature

A salt chlorinator works by separating Chlorine Ions from salt granules which are added to the pool water and then dissolved naturally. Once the salt solution has passed through the salt cell and returned to the pool it converts back to Sodium Chloride ( salt ). This is then be re-used. Salt does not evaporate, it is lost through filter back washing/rinse or dumping water following heavy rain fall. This process is mediated by a specially designed ionisation cell ( a number of specially coated metal plates housed together inside a plastic housing plumbed into the return line plumbing to the pool ( after heaters etc ). By design the majority of salt cells currently available are designed to perform when the pool water temperature is not lower than 16degC ( Winter ). If this recommended water temperature is not reached most salt cells will shut down and not produce any chlorine ( sanitiser ). The owner then suspects that the unit is faulty and seeks help and assistance from others. Prior to us wet testing the chlorinator we ensure that our test tank salt water solution is heated to around 20degC. A unit that does not produce chlorine on site in cold water will often work fine in our workshop. If this is not the case we have to investigate further, at least one obstacle is out of the way...... under normal water temperature operating conditions it functions as it should.

Scroll to Top