 |
 |
 |
 |
 |
| Calibration Fail (CF) |
|
Faulty Solenoid Valve(s) |
|
Run Solenoid Check cycle in Diagnostics – check status and connections of solenoid valves. |
| Calibration Fail (CF) |
|
Empty or Contaminated Standards Solutions Container(s) |
|
Check to make sure CAL standard bottles are full, check CAL tubing to make sure it is not pinched. Replace CAL standard with fresh solution and try again. |
| Calibration Fail (CF) |
|
Strength is too low. <83 |
|
Make sure both containers of standard (CA1 & CA2) are full of solution. |
| Calibration Fail (CF) |
|
Strength is too low. <83 |
|
Check that vapor bubbles are emerging from bottom of entrainment tube. |
| Calibration Fail (CF) |
|
Strength is too low. <83 |
|
Verify condition of reagent solution. Replace monthly. |
| Calibration Fail (CF) |
|
Strength is too low. <83 |
|
Ensure reference electrode tip is 42-48 mm from the top of the flowcell (5mm into sample) |
| Calibration Fail (CF) |
|
Strength is too low. <83 |
|
Regenerate the sodium measuring electrode. See section 5.2.2 in manual. |
| Calibration Fail (CF) |
|
Strength is too low. <83 |
|
Ensure calibration standard is flowing. Perform Solenoid Check cycle in Diagnostics to verify. |
| Calibration Fail (CF) |
|
Strength is too low. <83 |
|
Verify electrodes are connected properly |
| Calibration Fail (CF) |
|
Strength is too high. >110 |
|
Check level of reference electrode salt bridge solution; add more if necessary |
| Calibration Fail (CF) |
|
Strength is too high. >110 |
|
Faulty reference electrode. Replace with one of known performance. |
| Calibration Fail (CF) |
|
Strength is too high. >110 |
|
Make sure both containers of standard (CA1 & CA2) are full of solution. |
| Calibration Fail (CF) |
|
Strength is close to zero. |
|
Verify operation of solenoid valves. |
| Calibration Fail (CF) |
|
Strength is close to zero. |
|
Ensure there is flow of standard solution through flow cell. |
| Calibration Fail (CF) |
|
Strength is close to zero. |
|
Check level of salt bridge solution in reference electrode. |
 |
| Calibration Fail (CF) |
|
Strength is close to zero. |
|
Faulty reference electrode. Replace with one of known performance. |
| Calibration Fail (CF) |
|
Strength is close to zero. |
|
Check all connections in electrode junction box and interconnect cable. |
| Calibration Fail (CF) |
|
Strength is close to zero. |
|
Make sure both containers of standard (CA1 & CA2) are full of solution. |
| Calibration Fail (CF) |
|
No standard flow. |
|
Check for clogs in system. Check for air trapped in tubing. Gently squeeze standard containers to verify flow during appropriate solenoid test. Filter sample if deposits found in analyzer tubing. |
| Readings are not accurate – too low. |
|
Old/bad reagent. Poor electrode performance. Bad calibration. |
|
Replace reagent solution. Regenerate/replace sodium measuring electrode, refill/replace reference electrode. Check CAL log and run another CAL if results are not good. |
| Readings are not accurate – too high. |
|
Poor electrode performance. Bad calibration. Sodium leak in sample system. |
|
Regenerate/replace sodium measuring electrode, refill/replace reference electrode. Check CAL log and run another CAL if last result is not good. |
| Readings are not accurate – erratic |
|
Exhausted reagent |
|
Replace reagent. Recommended monthly |
| Current outputs (4-20mA) not functioning correctly. |
|
Disconnected wiring at transmitter or along wire path. DCS/recording system not set up properly. Bad CPU board. |
|
Check output set-up to make sure values are entered properly. Run Diagnostics – O/Pma Check cycle and check output coming directly from transmitter. Replace CPU board if output is not |
| Alarms not functioning correctly. |
|
Disconnected wiring at transmitter or along wire path. DCS/recording system not set up properly. Bad DIO board. |
|
Check alarm set-up to make sure values are entered properly. Run Diagnostics – Relay Check cycle and check alarm output directly from transmitter. Replace DIO board if output is not correct. |
| Display read “HOT” |
|
Sample temperature over specified range (>131F). Faulty thermistor. |
|
Check sample temperature. Clean/replace thermistor. |
| Display read “TEMP” |
|
No thermistor response. |
|
Clean/replace thermistor. Check thermistor connection at pre-amp. |
| Display read “OVR” |
|
Signal from electrodes too high – sample concentration over maximum range (>10ppm) |
|
Check sample concentration. Check electrode connections at junction box and pre-amp. |