horiba TW-150 Instruction Manual page 181

Alarm Alarm
Item
No. description
25 Zero calibration
26 Span calibration
Color
Analyzer
27
abnormality
Concentration
30
upper limit
Residual
chlorine
Concentration
31
lower limit
Cause
Degradation in zero water
filter
Mismatching calibration
solution
Blockage in calibration
solenoid valve
Detector failure
Mismatched calibration
results
Mismatching calibration
solution
Blockage in calibration
solenoid valve
Detector failure
Degradation in zero water
filter
Mismatched calibration
results
Dirt in turbidity/color cell
Detector failure
Internal analog circuit board
failure
Sample water abnormality
Inappropriate flow rate
Mismatched calibration
results
Inappropriate applied voltage Set appropriate applied voltage.
Electrode failure
Internal analog circuit board
failure
Sample water abnormality
Inappropriate flow rate
Mismatched calibration
results
Inappropriate applied voltage Set appropriate applied voltage.
Electrode failure
Internal analog circuit board
failure
Corrective action
(*: Manufacturer service required)
Replace filter cartridge.
Replace calibration solution and
reexecute calibration.
Replace calibration solenoid
valve.*
Replace detector*
Reset calibration value and
reexecute calibration.
Replace calibration solution and
reexecute calibration.
Replace calibration solenoid
valve.*
Replace detector*
Replace filter cartridge.
Perform calibration.
Clean turbidity/color cell.*
Replace detector.*
Replace internal analog circuit
board (TW-ADC-01).*
Manually analyze sample water.
Check the flow rate.
Perform calibration.
Polish residual-chlorine sensor
or
Replace residual-chlorine sensor.
Replace internal analog circuit
board (TW-ADC-01).*
Manually analyze sample water.
Check the flow rate.
Perform calibration.
Polish residual chlorine sensor
or
Replace residual-chlorine sensor.
Replace internal analog circuit
board (TW-ADC-01).*
8 TROUBLESHOOTING
Reference
page 141
page 31
page 31
page 141
page 31
page 11
page 62
page 103
page 142
page 11
page 62
page 103
page 142
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