Troubleshooting - Maytronics pH Drive i Series Instruction Manual

Troubleshooting

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Symptom
Unstable or inaccurate
pH readings
pH reading cannot be
calibrated
pH reads around pH7
without changing
pH reads around pH4
to 5 without changing
Unit does not power
up
Unit is not adding acid
when dosing pump is
operating
Alarm sounds due to
pH being too low
Acid Pump turns, but
acid is not flowing.
IF YOU NEED TO RETURN YOUR pH DRIVE FOR SERVICE OR REPAIRS AT ANY TIME, PLEASE USE THE QUICK DOSE
FUNCTION (PAGE 11) TO DOSE 1 LITRE OF FRESH WATER THROUGH THE SYSTEM BEFORE SENDING BACK. THIS
WILL STOP ACID LEAKING FROM THE PUMP DURING TRANSPORT (WHICH WOULD DAMAGE YOUR UNIT OR THE
PACKAGING, VOIDING WARRANTY), AND IS ALSO A SAFETY HAZARD FOR OUR TECHNICIANS.
18
Possible Causes and Remedies
pH Sensor is dirty.
Disconnect pH Sensor from the pH Drive, then unscrew sensor from
!
the pipe.
Wipe the glass bulb with a soft tissue soaked with methylated spirits.
!
Soak the tip of the sensor in diluted Hydrochloric acid (for example,
!
from your pH Drive diluted acid drum).
Rinse the pH Sensor thoroughly in clean water.
!
Screw sensor back into pipe and re-connect sensor to pH Drive.
!
pH Sensor needs to be re-calibrated.
Clean pH Sensor as per procedure above.
!
Re-calibrate pH Sensor as per details on pages 14 and 15.
!
Pool water is very pure and has low conductivity.
Add one bag of pool salt per 50,000 Litres of pool water.
!
pH Sensor is dirty.
Follow the pH Sensor cleaning procedure above.
!
pH Sensor is faulty.
Replace pH Sensor.
!
Short circuit in pH Sensor BNC Plug or Socket
Disconnect pH Sensor plug from socket. Dry out with a hair dryer or
!
allow to air dry. Reconnect and re-check.
If problem persists, return pH Sensor to have connector replaced, or
!
replace the pH Sensor.
Glass bulb or internal stem of pH Sensor is cracked.
Replace pH Sensor.
!
Faulty Unit
Faulty pH Drive main unit. Return for repair.
!
Check that the pH Drive diluted acid drum is not empty.
!
Check that all suction and output tubes are fitted correctly, with no
!
leakage.
Check that squeeze tube inside pump cassette is not leaking.
!
WARNING : IF ANY ACID HAS LEAKED OUT OF TUBES, WASH DOWN THE
AREA WITH FRESH WATER IMMEDIATELY. TAKE THE LID OFF THE PUMP,
REMOVE SQUEEZE TUBE AND WASH OUT WITH FRESH WATER IF
SQUEEZE TUBE WAS LEAKING.
Pool Size Setting is set too high
Reduce the Pool Size Setting by one level and check in 2 days.
!
Leaking or worn squeeze tube and/or rollers.
Tighten Acid Pump fittings further or replace fittings.
!
Replace squeeze tube or cassette as needed (see page 16 and 17).
!