Davey SCMax 77 ECOMATIC Salt Water Pool Sanitizing System - Manual (Page 9)

9
Warning LED
Your ECO-matic chlorinator is fitted with a number of protective systems including the Warning LED. As the salt level in the
pool decreases, the wear on the Cell increases. Although salt is not consumed in the electrolysis process, it is lost through
splashing, back-washing and on bathers as they leave the pool. The salt level is also reduced by rain, which causes dilution.
Salt is not lost to evaporation. As the salt level in the pool falls below the minimum the Warning LED will turn RED. At
this point the salt level should be increased by adding 55lb of salt per 6600 gallons of pool water. *It is recommended that
manual testing of chemical levels be tested over time to ensure correct levels are maintained.
There are other factors that can cause the Unit not to work correctly:
1. Heavy Rain - can dilute the salt level in the pool . Low levels of salt may cause damage to cell
2. Scaled Cell - a scaled Cell will not draw as much electrical current as a clean Cell when first started.
3. Cold Water - cold pool water reduces the conductivity of the water, lowering the effectiveness of the unit.
4. Failing Cell - as the Cell ages there will come a time when the electrical current draw will drop. This can be compensated
for with the addition of extra salt. A Cell is considered failed when it draws less than 80 % of maximum current. To keep a
failing Cell in operation extra salt can be added. There will come a time when the Cell will not respond to extra salt. It will
then need to be replaced.
Please note that the Warning LED is not like T.D.S. meters, which are temperature compensated Scientific Instruments. The
accuracy will be within ±500ppm salinity and it is water temperature dependent.
Maintenance of the Power Supply
Little maintenance is normally required with the exception of replacing blown Fuses. These 7 Amp Slow Blow Fuse can be
sourced from your local ECO-matic dealer. However it is essential that the wall to which the Unit is installed be sprayed (not
the Unit itself) periodically with a good surface type insect repellent, since penetration by insects may cause damage which
is not covered by your warranty.
The Unit will become warm to hot when in operation, this is normal.
Safety Notice
Certain local electrical regulations state that if the supply cord is damaged, it must be replaced by a genuine cord
available from the manufacturer or its service agent.
Maintenance of the Electrolytic Cell
The ECO-matic system uses a patented electronic reverse polarity cleaning system to clean the cell and reduce
operational maintenance. In ideal conditions reverse polarity systems will require little or no manual cleaning, however in
areas with hard water (high calcium hardness), reverse polarity systems may require occasional manual cleaning.
Calcium and other minerals are deposited on the cell plates as electrolysis takes place. This build up will interfere with
the flow of electrical current in the Cell and thus lowers sanitizer production. It is essential to inspect the Cell regularly
and clean when necessary.
The rate at which deposits will form on the plates differs with each pool and can be influenced by the following:
• Calcium hardness of the water
• Water Temperature
• pH control
• Water which has been chlorinated with calcium hypochlorite for an extended period
• Calcium in the plaster surfaces of a concrete pool
Because these conditions vary so much, check the Cell at least weekly to begin with to see if any deposits appear on the
plates. You will then be able to determine the cleaning cycle necessary for your pool (obviously more in summer).
The intervals between cleaning could get longer to the point where cleaning is only necessary a few times each year.
One exception is the use of bore water or ground water, in which case cleaning may always need to be as frequent as
once a week.
If the cell remain dormant for a period of time or there is evidence of rust within the cell or on the cell plates, an acid wash
clean of the cell (please refer to page 10 – How to clean you ECO-matic cell) is required prior to use of the sanitising system.