Walchem WDS100, Инструкция по эксплуатации

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NOTE: Disinfectant concentration can change rapidly in the sample!
Minimize the time between performing the DPD test or manual analysis and
finishing the calibration!
4.0 Troubleshooting
The disinfectant reading is much lower than the manual
analysis
Possible Causes Corrective Actions
Insufficient conditioning Wait for the appropriate amount of time
before attempting a calibration
Insufficient sample flow
Increase flow rate to between 20 and
100
liter per hour
Air bubbles in sample Dislodge bubbles
Adjust flow rate higher if necessary
Allow sample to outgas
Loose electrolyte housing Tighten electrolyte housing
Protection cap not removed Remove protection cap
Dirty electrodes Clean electrodes with emery paper
Replace balls in cleaning attachment
No electrolyte fill solution in
electrolyte housing
Fill electrolyte housing with electrolyte
Air bubbles in electrolyte Empty electrolyte housing and refill it
Faulty cable Replace cable
Faulty sensor Replace sensor
Faulty analysis equipment or
reagents
Consult test equipment instructions
The disinfectant reading is much higher than the manual
analysis
Possible Causes Corrective Actions
Insufficient conditioning Wait for the appropriate amount of time
before attempting a calibration
Faulty sensor Replace sensor
Faulty analysis equipment or
reagents
Consult test equipment instructions
Sample contaminated with
interfering molecule (refer to
Sensitivity specification in
Section 6)
Remove source of contamination