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Troubleshooting
215
Measurement not working right
First, check that no error is currently activated.
If there are currently activated errors, take corrective action as instructed in “ Cause and
corrective action for alarms” (page 218).
If measurement values are incorrect due to a reason other than errors, the following are the
possible causes.
Take corrective action as instructed below.
Symptom
Possible cause
Corrective action
Reference
TN reading is inconsistent
TN reading is abnormal
The dilution tube or cell
measurement tube is dirty
Check if dirt is accumulated in the dilution
tube and cell measurement tube.
If they are dirty, clean the inside of the
glass tube.
“ Checking and
cleaning the
dilution tube and
cell
measurement
tube” (page 209)
Sample cannot be
measured
Check if the filter for the overflow tank is
dirty.
If it is dirty, clean it.
If the problem cannot be resolved, contact
HORIBA Advanced Techno.
“ Checking and
cleaning the
overflow tank
(option)” (page
207)
Cell measurement, blank
water measurement, or
reagent measurement
cannot be performed
appropriately
Perform each operation and report the
error condition to HORIBA Advanced
Techno.
-
The reagent has
deteriorated
Replace the reagent with a new one
designated by HORIBA Advanced
Techno.
“ Replacing the
reagent bottle”
(page 193)
The pure water has
deteriorated or foreign
matter is mixed in the pure
water
(Models equipped with a pure water tank)
Drain pure water from the pure water tank
and clean the inside of the tank. Then,
supply new pure water.
-
(Models equipped with a built-in pure
water unit)
Check if a pure water cartridge
deterioration alarm is activated.
If it is activated, purge pure water. If the
alarm still cannot be canceled, replace the
pure water cartridge.
(For models where pure water is supplied
externally)
Purge pure water.
-
The overflow tank is dirty
Clean the inside of the overflow tank and
the filter for the sampling port.
“ Checking and
cleaning the
overflow tank
(option)” (page
207)
Connector is disconnected
Check the connection of each connector.
If any of them is disconnected, connect it.
-
Содержание TPNA-500
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Страница 9: ...Type 1 2 4 3 5 2 type labels 6 For automatic hydrochloric acid cleaning specification...
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