HRX-MM-N007
Chapter 3 Alarm Indication and Troubleshooting
3.3 Troubleshooting HRS Series
2. Check the water leakage sensor.
Check the operation of the water leakage sensor following the instructions shown below:
(1) If any liquid adheres on the bottom surface (the sensing part) of the water leakage sensor, wipe
it off with waste cloth, etc.
(2) Check that the indicator of the water leakage sensor turns green.
(3) Reset the alarm of the Thermo-Chiller and confirm that AL33 is reset.
(4) Put some water onto the bottom surface of the water leakage sensor to check if AL33 is
generated.
(5) If AL33 is generated when the procedures 1 to 4 are taken, the water leakage sensor is judged
to be operating normally.
If the indicator does not turn ON or the indicator light does not change from red, the water
leakage sensor operation is judged to abnormal.
AL34: Electric resistivity/conductivity rise
<Detection method> This alarm goes off when the value detected by the electric resistivity sensor or the
electric conductivity sensor exceeds the set value.
- This alarm is set to be OFF as default.
- This alarm goes off when the electric resistivity sensor or the electric conductivity sensor
that is available as a separately sold accessory is used.
[Part numbers of the separately sold accessories]
HRS-DI001, HRS-DI003, HRS-DI004, HRS-DI005, HRS-DI008, HRS-DI009
- Refer to the Operation Manual that is attached to the separately sold accessory.
Electric resistivity/conductivity
rise
AL34
AL35: Electric resistivity/conductivity drop
<Detection method> This alarm goes off when the value detected by the electric resistivity sensor or the
electric conductivity sensor is lower than the set value.
- This alarm is set to be OFF as default.
- This alarm goes off when the electric resistivity sensor or the electric conductivity sensor
that is available as a separately sold accessory is used.
[Part numbers of the separately sold accessories]
HRS-DI001, HRS-DI003, HRS-DI004, HRS-DI005, HRS-DI008, HRS-DI009
- Refer to the Operation Manual that is attached to the separately sold accessory.
Electric resistivity/conductivity
drop
AL35
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