47Maintenance4. Remove the fan locking screw and slide the retaining strap tothe top and remove (Figure 10, page 20). If necessary, pressthe fan down to remove the retaining strap.5. Slide the fan from the holding screws.6. Clean the filter with soap and water and reposition.7. Press ENTER.8. Replace the fan. Make sure that the fan opening is positioneddownward. Attach the retaining strap (hold down the fan) andinstall the fan locking screw.9. Close the analyzer enclosure and the analysis panel.10. Press ENTER.The instrument will reset the maintenance counter and will start theanalyzer again.6.1.3 Fuse replacementThe fuses for the power supply are found in the sc1000 controller.Refer to the sc1000 User Manual for fuse replacement information.6.2 Reagent replacementThe chemicals must be changed or renewed at regular intervals.Refer to Table 5 for information on the life of the chemicals.Table 5 Chemicals for the AMTAX scChemical (section 8.1,page 65)Measuring range 1(0.02–5 mg/L)Measuring range 2(0.05–20 mg/L)Measuring range 3(1–100 mg/L)Measuring range 4(10–1000 mg/L)Reagent 2500 mL for 3 month 2500 mL for 3 months 2500 mL for 2 months 2500 mL for 2 monthsStandards (2 liters):0.5 and 2.5 mg/L for2 month on dailycalibration1 and 10 mg/L for3 months on dailycalibration10 and 50 mg/L for3 months on dailycalibration50 and 500 mg/L for3 months on dailycalibrationCleaning and calibration 250 mL for 1 month on 3 cleanings and calibrations per day (default)250 mL for 3 months on daily cleaning and calibrationElectrolyte andmembrane cap11 mLElectrolyte for1–1.5 months;Membrane cap:2–3 months(depending on themembrane soiling)11 mLReplace withmembrane every2–3 months(depending on themembrane soiling)11 mLReplace withmembrane every2–3 months(depending on themembrane soiling)11 mLReplace withmembrane every2–3 months(depending on themembrane soiling)
