LOW pH ALARM (Excess Acid)
This indicates that the pH level in the water is considerably lower than that which was set.
The Chemigem cannot do anything about this condition except warn about it. However as
a safeguard, the unit operates a lock on any more additions of Acid (that would only make
matters worse) until the pH is brought back into the normal range with the addition of some
Sodium Carbonate or Sodium Bicarbonate.
Low pH levels could be due to the following:
Manual overdosing with pool Acid
•
Poor pool water circulation leading to over-dosing.
•
Excessive rainfall (that is slightly acidic) neutralising the alkalinity of the pool.
•
A faulty solenoid valve.
•
Multi-electrode (probe) requires cleaning (Refer to Cleaning Instructions below)
•
HIGH pH ALARM (Insufficient Acid)
This indicates that the pH level in the water is considerably higher than that which was set. In
this case the Chemigem will be in a locked condition and will not dose further pool Acid until
the lock mechanism is overridden. This is carried out by pressing the
ESC
keypad No.2. The
unit will then dose further pool Acid until the level for pH that was set has been reached.
High pH levels could be due to the following:
Initial conditions in a new plaster lined pool being very alkaline and overwhelming the unit’s
•
ability to dose sufficient acid.
The unit has a proportional acid setting that may have been adjusted to add insufficient
•
acid
The Acid drum may be empty
•
Super chlorinating the pool
•
The injector nozzle in the tapping band is clogged
•
The venturi system (if fitted) is clogged
•
A faulty solenoid valve
•
The filter needs backwashing
•
Multi-electrode (probe) requires cleaning (Refer to Cleaning Instructions below)
•
CLEANING THE MULTI-ELECTRODE (PROBE)
Remove from the tapping band by unscrewing the retaining nut and pulling out the multi-
•
electrode (probe)
Holding the cable, gently swirl the multi-electrode (probe) sensing components in a dilute
•
solution of Hydrochloric Acid for 30 seconds.
Rinse the multi-electrode (probe) in clean water
•
Replace the multi-electrode (probe), making sure the “O” seal is in place
•
Screw up the nut with fingers only. (Refer to page 10)
•
RAINBOW
POOL
PRODUCTS
PTY
LTD
