![background image](http://html1.mh-extra.com/html/horiba/tw-100/tw-100_instruction-manual_2162280159.webp)
8 TROUBLESHOOTING
147
32
Residual
chlorine
Concentration
device upper
limit
Sample water abnormality
Manually analyze sample water.
Mismatched calibration
results
Perform calibration.
Inappropriate applied voltage Set appropriate applied voltage.
Electrode failure
Replace residual-chlorine sensor.
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
33
Concentration
device lower
limit
Sample water abnormality
Manually analyze sample water
Mismatched calibration
results
Perform calibration.
Inappropriate applied voltage Set appropriate applied voltage.
Electrode failure
Replace residual-chlorine sensor.
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
35
Residual
chlorine
Zero calibration
Degradation in zero water
filter
Replace filter cartridge.
Mismatching calibration
solution
Replace calibration solution and
reexecute calibration.
Electrode failure
Replace residual-chlorine sensor.
Blockage in calibration
solenoid valve
Replace calibration solenoid
valve.*
36
Span calibration
Mismatched calibration
results
Reset calibration value and
reexecute calibration.
Mismatching calibration
solution
Replace calibration solution and
reexecute calibration.
Electrode failure
Replace residual-chlorine sensor.
Blockage in calibration
solenoid valve
Replace calibration solenoid
valve.*
37
Analyzer
abnormality
Degradation in zero water
filter
Replace filter cartridge.
Mismatched calibration
results
Perform calibration.
Electrode failure
Replace residual-chlorine sensor.
Internal analog circuit board
failure
Replace internal analog circuit
board (TW-ADC-01).*
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 ...
Page 8: ......
Page 174: ......