8 TROUBLESHOOTING
144
14
Turbidity
Light source
abnormality
Degradation or failure in
turbidity light source (LED)
Readjust or replace turbidity light
source.*
Detector failure
Replace detector.*
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
Connection failure in light
source or detector
Inspect light source or detector
connection.*
15
Zero calibration
Degradation in zero water
filter
Replace filter cartridge.
Mismatching calibration
solution
Replace calibration solution and
reexecute calibration.
Blockage in calibration
solenoid valve
Replace calibration solenoid
valve.*
Detector failure
Replace detector.*
16
Span calibration
Mismatched calibration
results
Reset calibration value and
reexecute calibration.
Mismatching calibration
solution
Replace calibration solution and
reexecute calibration.
Blockage in calibration
solenoid valve
Replace calibration solenoid
valve.*
Detector failure
Replace detector.*
17
Analyzer
abnormality
Degradation in zero water
filter
Replace filter cartridge.
Mismatched calibration
results
Execute calibration.
Dirt in turbidity/color cell
Clean turbidity/color cell.*
Detector failure
Replace detector.*
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
20
Color
Concentration
upper limit
Air bubbles in turbidity/color
cell
Perform auto cleaning.
Sample water abnormality
Manually analyze sample water.
Mismatched calibration
results
Execute calibration.
Dirt in turbidity/color cell
Clean turbidity/color cell.*
Detector failure
Replace detector.*
Alarm
No.
Item
Alarm
description
Cause
Corrective action
(*: Manufacturer service required)
Reference
Summary of Contents for TW-100
Page 1: ...Water Distribution Monitor TW 100 Instruction Manual CODE GZ0000080187H ...
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