Hanna-instruments PCA 310 Bedienungsanleitung PDF herunterladen (Seite 72)

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 RpH Out of R

pH Out of R

angeange

ange” on LCD and “

pH ErrpH 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 RORP Out of R

ORP Out of R

angeange

ange” on LCD and “

ORP ErrORP 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.

“

emp. Out of Remp. Out of R

emp. Out of R

angeange

ange” on LCD and “T

emp Erremp 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 RConc. Out of R

Conc. Out of R

angeange

ange” on LCD and “

Cl ErrCl 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 ChlorineHigh Chlorine

High Chlorine” on LCD and “

H ClH Cl

H Cl” on SMS

The concentration is over the Alarm High setpoint.

Change the setpoint; verify the chlorine dosing.

“

Low ChlorineLow Chlorine

Low Chlorine” on LCD and “

L ClL 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 pHHigh pH

High pH” on LCD and “

H pHH 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 pHLow pH

Low pH” on LCD and “

L pHL 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.

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