EN
TROUBLE SHOOTING
16
CAUSE SOLUTION
No «pool earth» fitted
•A stray current is probably interfering with your probe reading. Use a glass water to check if this is the case:
1. Dip the probe into a glass of tap water (pH level between 7.5 and 8.0) and see if the reading is consistent.
2. Next, dip the probe into a 7.0 reference solution. The reading should be around 7.0. If not, the probe needs to be recalibrated.
3. Next, dip the probe into a glass filled with water from the pool. Since the probe was calibrated properly in the previous step, the pH
level shown will be correct.
4. To finish, put the probe back in its proper place (retaining clamp on the suction line).
• If the reading matches the reading from the glass filled with water from the pool, there is no stray current in the pipes; the probe
was not calibrated properly.
•If the reading does not match the reading from the glass, you will need to install a «pool earth» to the system.
A pool earth is a metal rod placed in slightly damp ground and connected to the terminal provided on the filtration unit line by a
minimum 6 mm² braided connector.
The “Pool Earth” acts as a stray current earthing device.
•We always recommend connecting your system to a “pool earth”.
pH probe
Carry out the glass of water test mentioned above using a 7.0 reference solution. Calibrate the probe using the 7.0 solution and then
dip it into a 10.0 reference solution. If the reading is not 10.0 or thereabouts, the probe is not working properly and will have to be
replaced.
PROBLEM: The pH probe is giving incorrect readings.
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