Hach 6120118 user manual Maintenance Schedule

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Section 6 Maintenance

DANGER

Only qualified personnel should conduct the tasks described in this section of the manual.

DANGER

Seul un technicien qualifié peut effectuer les tâches d'installation décrites dans cette section du manuel.

DANGER

Explosion hazard. Do not connect or disconnect equipment unless power has been switched off or the area is known to be non-hazardous.

DANGER

Risque d’explosion. Couper le courant ou s’assurer que l’emplacement est designe non dangereux avant de replacer le aucon composant.

DANGER

Explosion hazard. Substitution of components may impair suitability for Class 1, Division 2.

DANGER

Risque d’explosion. La substitution de composants peut rendre ce materiel inacceptable pour les emplacements de Classe 1, Division 2.

6.1 Maintenance Schedule

Maintenance Task	90 days	Annually

Clean the sensor1	x
Inspect sensor for damage	x

Calibrate Sensor (if required by regulatory agency)	Per the schedule mandated by your regulatory agency.

1Cleaning frequency is application dependent. More or less frequent cleaning will be appropriate in some applications.

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Contents Digital PC sc and RC sc ¾-inch Combination pH/ORP Sensor Page Table of Contents Table of Contents Specifications Combination pH and ORP Sensor SpecificationsDigital Gateway Specifications Page Precautionary Labels Safety InformationGeneral Information Use of Hazard InformationGeneral Sensor Information General InformationSensor Body Styles Digital Gateway Operating PrecautionPage Wiring the sc Sensor to the Digital Gateway Section InstallationProper Wire Preparation and Insertion InstallationWiring the Digital Gateway Cat. No Hard-wiring the Digital Gateway to the sc100 Terminal Number Terminal Designation Wire Color Wiring the Sensor at Terminal Block J5Connecting the Sensor using the Quick-connect Fittings Connecting the Sensor to the sc1000Mounting the Digital Gateway Digital Gateway DimensionsPage Controller Key Functions/Features Using the sc100 ControllerUser Interface and Navigation Number Key FunctionUser Interface and Navigation Controller Display Features Important Key PressesDisplay Using the sc1000 Controller Display FeaturesUser Interface and Navigation Main Menu Navigating the Menu WindowsKeypad Message window List BoxSensor Diagnostics Menu for pH and ORP Sensor SetupPH Sensor Setup Menu OperationOperation ConfigureAC Frequency ORP Sensor Setup MenuPH Calibration One Point Automatic CalibrationTwo Point Automatic Calibration Two Point Manual Calibration Operation One Point Manual CalibrationORP Calibration Concurrent Calibration of Two Sensors for pH and ORPOne-point Manual Calibration Adjusting the Temperature Page Maintenance Schedule MaintenanceMaintenance Cleaning the SensorError Codes TroubleshootingTroubleshooting the pH or ORP Sensor Error CodesPage Replacement Items, Accessories, and Reagent and Standards Replacement Parts and AccessoriesItem Description Catalog NumberPage Technical and Customer Service U.S.A. only How to OrderA. Customers Information RequiredCanada Repair ServiceLimited Warranty LimitationsLimitation of Remedies Page Compliance Information Product SafetyImmunity EmissionsCompliance Information FCC Part 15, Class a LimitsAppendix a Modbus Register Information Sensor Modbus RegistersGroup Name Tag Name Register Data Length Description Type Modbus Register Information Appendix B General pH Information PH Measurement TheoryWhere General pH Information PID Controller BasicsDerivative IntegralPage Index