54
Troubleshooting
7.3 Event Codes
Event codes are not displayed on the screen of the sc100 and must be
downloaded from the event log to be viewed. See section 4.7 on page 36 for
additional information. Troubleshooting actions are given in section Table 11 on
page 53.
Erratic Readings Calibration standards have the
same value
Inadequate bubble removal from
sample
Verify the accuracy of calibration standards and recalibrate the
instrument.
Increase the signal averaging time to a longer interval.
Make sure the Bubble Reject feature is turned on.
Slow the flow of sample into the instrument.
High Readings Deionized water turbidity is
greater than 0.5 NTU
Clean the instrument.
Access Calibration History for turbidity value of ultra-filtered water.
Verify the flow is between 200–750 mL/min.
Recalibrate the instrument.
Table 12 Additional Malfunctions Not Recorded in the Event Log (continued)
Symptom Possible Cause Corrective Action
Table 13 Event Log List
Event Event # Data1 Data2 Data3
Bubble Reject Change 0
0 = OFF
1= ON
——
Filter Size Change 1
0 = No avg
1 = 6 sec
2 = 30 sec
3 = 60 sec
4 = 90 sec
——
Data Log Interval Change 2
0 = 30 sec
1 = 1min
2 = 5 min
3 = 10 min
4 = 15 min
——
Power On 3 1 — —
Calibration 4 Cal Gain Initials —
Verification 5 Expected Value Meas Value Initials
Dark Reading Warning 6 Measured Value — —
Temperature Warning 7 Temperature Value — —
Voltage Warning 8
16 = +5V high
32 = +5V low
64 = V in high
128 = V in low
——
Lamp Warning 9
1 = lamp V high
2 = lamp V low
4 = lamp I high
8 = lamp I low
——
A/D Fail 10 1 — —
Lamp Fail 11 2 — —
Flash Fail 12 3 — —
Output Mode Change 13
1 = Hold
2 = Transfer
——
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