Hach-Lange POLYMETRON 9523 Basic User Manual: Maintenance

8. If the calibration passed, push enter to continue.

9. If the option for operator ID is set to YES in the CAL OPTIONS menu, enter an operator ID. Refer

to Change calibration options on page 22.

10. On the NEW SENSOR screen, select whether the sensor is new:

Option Description

YES The sensor was not calibrated previously with this controller. The days of operation and previous

calibration curves for the sensor are reset.

NO The sensor was calibrated previously with this controller.

11. With the sensor still in the process push enter. The output signal returns to the active state and

the measured sample value is shown on the measure screen.

Note: If the output mode is set to hold or transfer, select the delay time when the outputs return to the active

state.

Change calibration options

The user can set a calibration reminder or include an operator ID with calibration data from this

menu.

1. Push the menu key and select SENSOR SETUP>[Select Sensor]>CALIBRATE.

2. If the pass code is enabled in the security menu for the controller, enter the pass code.

3. Select CAL OPTIONS and push enter.

4. Use the arrow keys to select an option and push enter.

Option Description

CAL REMINDER Sets a reminder for the next calibration in days, months or years—select the required

delay from the list.

OP ID ON CAL Includes an operator ID with calibration data—YES or NO (default). The ID is entered

during the calibration.

Maintenance

D A N G E R

Multiple hazards. Only qualified personnel must conduct the tasks described in this section of the document.

Service schedule

The following table shows the recommended service schedule:

Every 3 Months Every 6 Months Yearly As Needed

Validation (check with referenced measure) X X X X

Calibration (measure) X X

Calibration (temperature) X

22 English

Cleaning the controller

D A N G E R

Always remove power from the controller before performing maintenance activities.

Note: Never use flammable or corrosive solvents to clean any part of the controller. Use of these solvents may

degrade the environmental protection of the unit and may void the warranty.

1. Make sure the controller cover is securely closed.

2. Wipe the controller exterior with a cloth dampened with water, or with a mixture of water and mild

detergent.

Replace the resin

C A U T I O N

Chemical exposure hazard. Dispose of chemicals and wastes in accordance with local, regional and

national regulations.

The cartridge of resin can be replaced with a new cartridge, or as an alternative, keep the cartridge

and replace only the resin. In order to take advantage of the full system specifications, we

recommend the use of nuclear grade cationic resin.

1. Stop the sample flow using the sample flow adjustment valve.

2. Replace the cartridge or resin:

• Cartridge—refer to Resin cartridge installation on page 9.

• Resin—refer to Figure 7. Make sure to add deionized water at regular intervals when new resin

is added to compact the resin.

3. Open the degassing valve.

4. Open the sample flow adjustment valve and ensure everything is watertight and there are no

leaks.

5. Close the degassing valve when the measuring cell is free of air.

6. Set the sample flow to the required rate (between 5 and 20 L/h).

7. Reset the resin options. Refer to Resin option on page 19.

English

23