Hanna Instruments PCA 310 - Manual (Page 72)

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The chlorine value not increase at least with 0.05 ppm
even if the chlorine dosing pump is running full time for
“Max On time”. In this particular case, the error is cleared
only when the controller is restarted. This could be caused
by absence of the chlorination agent, the malfunction of
the dosing pump or malfunction of the detector.
Check the presence of the magnet barr, check the reagent
level, check the reagent pump tubes, clean cell, observe
if the sample flow in the cell, edit the “Low Point”. Value,
check the chlorine dosing pump, replace the cell.
“pH Out of R pH Out of R pH Out of R pH Out of R pH Out of Range ange ange ange ange” on LCD and “pH Err pH Err pH Err pH Err pH Err” on SMS
pH value is outside range (0.00 to 14.00 pH).
Verify the connections; Change the pH probe.
“ORP Out of R ORP Out of R ORP Out of R ORP Out of R ORP Out of Range ange ange ange ange” on LCD and “ORP Err ORP Err ORP Err ORP Err ORP Err” on SMS
ORP value is outside range (0 to 2000 mV).
Verify the sample ORP; verify ORP probe connections,
Change the ORP probe.
“T TT TTemp. Out of R emp. Out of R emp. Out of R emp. Out of R emp. Out of Range ange ange ange ange” on LCD and “Temp Err emp Err emp Err emp Err emp Err” on SMS
Temperature value is outside range (0.0 °C to 75.0 °C).
Verify the sample temperature, verify the pH probe con-
nector; change the pH probe.
“Conc. Out of R Conc. Out of R Conc. Out of R Conc. Out of R Conc. Out of Range ange ange ange ange” on LCD and “Cl Err Cl Err Cl Err Cl Err Cl Err” on SMS
Chlorine value is outside range (0.00 to 5.00 mg/L).
The chlorine concentration is too high.
ALARM MESSAGES
“High Chlorine High Chlorine High Chlorine High Chlorine High Chlorine” on LCD and “H Cl H Cl H Cl H Cl H Cl” on SMS
The concentration is over the Alarm High setpoint.
Change the setpoint; verify the chlorine dosing.
“Low Chlorine Low Chlorine Low Chlorine Low Chlorine Low Chlorine” on LCD and “L Cl L Cl L Cl L Cl L Cl” on SMS
The concentration is under the Alarm Low setpoint.
Change the setpoint, verify the chlorine dosing, wait for
PCA to adjust the value.
“High pH High pH High pH High pH High pH” on LCD and “H pH H pH H pH H pH H pH” on SMS
The pH is over the Alarm High setpoint.
Change the setpoint; verify the pH dosing; verify if acid/base
dosing is correctly set; wait for PCA to stabilize the value.
“Low pH Low pH Low pH Low pH Low pH” on LCD and “L pH L pH L pH L pH L pH” on SMS
The pH is under the Alarm Low setpoint.
Change the setpoint; verify the pH dosing; verify if acid/
base dosing is correctly set; wait for PCA to adjust the value.