horiba TW-150 Instruction Manual page 182

8 TROUBLESHOOTING
Alarm Alarm
Item
No. description
Concentration
32 device upper
limit
Residual
chlorine
Concentration
33 device lower
limit
35 Zero calibration
Residual
36 Span calibration
chlorine
Analyzer
37
abnormality
156
Cause
Sample water abnormality
Mismatched calibration
results
Inappropriate applied voltage Set appropriate applied voltage.
Electrode failure
Internal analog circuit board
failure
Sample water abnormality
Mismatched calibration
results
Inappropriate applied voltage Set appropriate applied voltage.
Electrode failure
Internal analog circuit board
failure
Degradation in zero water
filter
Mismatching calibration
solution
Electrode failure
Blockage in calibration
solenoid valve
Mismatched calibration
results
Mismatching calibration
solution
Electrode failure
Blockage in calibration
solenoid valve
Degradation in zero water
filter
Mismatched calibration
results
Electrode failure
Internal analog circuit board
failure
Corrective action
(*: Manufacturer service required)
Manually analyze sample water.
Perform calibration.
Replace residual-chlorine sensor.
Replace internal analog circuit
board (TW-ADC-01).*
Manually analyze sample water
Perform calibration.
Replace residual-chlorine sensor.
Replace internal analog circuit
board (TW-ADC-01).*
Replace filter cartridge.
Replace calibration solution and
reexecute calibration.
Replace residual-chlorine sensor.
Replace calibration solenoid
valve.*
Reset calibration value and
reexecute calibration.
Replace calibration solution and
reexecute calibration.
Replace residual-chlorine sensor.
Replace calibration solenoid
valve.*
Replace filter cartridge.
Perform calibration.
Replace residual-chlorine sensor.
Replace internal analog circuit
board (TW-ADC-01).*
Reference
page 62
page 103
page 142
page 62
page 103
page 142
page 141
page 62
page 142
page 62
page 142
page 141
page 62
page 142