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8 TROUBLESHOOTING
Alarm
Alarm
Item
No.
description
Concentration
10
upper limit
Concentration
11
lower limit
Turbidity
Concentration
12
device upper
limit
Concentration
13
device lower
limit
152
Cause
Air bubbles in turbidity/color
cell
Sample water abnormality
Mismatched calibration
results
Dirt in turbidity/color cell
Detector failure
Sample water abnormality
Degradation in zero water
filter
Mismatched calibration
results
Dirt in turbidity/color cell
Detector failure
Sample water abnormality
Mismatched calibration
results
Dirt in turbidity/color cell
Detector failure
Internal analog circuit board
failure
Sample water abnormality
Degradation in zero water
filter
Mismatched calibration
results
Dirt in turbidity/color cell
Detector failure
Internal analog circuit board
failure
Corrective action
(*: Manufacturer service required)
Perform auto cleaning.
Manually analyze sample water.
Perform calibration.
Clean turbidity/color cel.l*
Replace detector.*
Manually analyze sample water.
Replace filter cartridge.
Perform calibration.
Clean turbidity/color cell.*
Clean turbidity/color cell.*
Replace detector.*
Manually analyze sample water.
Perform calibration.
Clean turbidity/color cell.*
Replace detector.*
Replace internal analog circuit
board (TW-ADC-01).*
Manually analyze sample water.
Replace filter cartridge.
Perform calibration.
Clean turbidity/color cell.*
Clean turbidity/color cell.*
Replace detector.*
Replace internal analog circuit
board (TW-ADC-01).*
Reference
page 105
page 42
page 141
page 42
page 42
page 141
page 42
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