Davey MCxxC CHLOROMATIC Salt Water Pool System - Manual (Page 17)

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4. Switch the pH Control to SET and adjust to the desired pH if necessary. NOTE: for concrete pools it is possible
that a pH set point of around 7.4 or below will lead to high acid consumption and frequent additions of buffer. To
reduce this effect a set point of 7.7 may be more economical.
5. Switch pH Control to RUN and allow unit to operate.
6. Retest pool pH with test kit over the next few days to fine tune control if necessary
7. Important – correct maintenance of pH requires the Total Alkalinity of the pool to be above 100ppm.
Failure to maintain TA above this level may result in excess acid being injected into the pool which can
have undesirable effects.
MAINTENANCE OF SENSORS AND PUMP MODULE
The pH Sensor can become fouled and/or scaled depending on the water quality and bather load of the pool. To
clean the sensor it is necessary to wash it in a solution of 1 part hydrochloric acid and 9 parts water. Take care with
the acid and read the warnings on the acid container. Dip the end of the sensor in the solution and move it around
for about 20 seconds. Rinse the sensor and return it to the manifold.
The pH Control should be turned off for at least 30 minutes to allow the sensor to settle. Check that it is reading
correctly and calibrate if necessary. The pH Control can now be turned on.
The Pump Module uses a “squeeze” tube to pump the acid into the pool. This tube is perishable and must be
replaced periodically. We recommend replacement approximately once per year. The tube should be visually
inspected regularly for leaks or damage. Tube replacement is simple:
1 Disconnect acid lines (take care to avoid acid in lines) and remove the pump clear cover
2 Rotate roller arm by hand until it is vertical and pull bottom tube ends from the pump.
3 Rotate the roller arm until the squeezed section of the tube can be removed
4 New tube is inserted into the pump in reverse of removal procedure.
For further information on the operation and maintenance of the Davey Peristaltic Pump, please refer to the
Peristaltic Pump Installation & Operating Instructions included with your ChloroMatic
® .
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