Hach POLYMETRON 8810, User Manual

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Section 7 Maintenance and Troubleshooting
7.1 Maintenance
D A N G E R
Electrocution hazard. Always make sure the analyzer is turned off and power is disconnected
before carrying out any maintenance on the analyzer.
7.1.1 General
For periodic maintenance, all the elements are freely accessible on the front panel.
For installation of accessories and specialized service work the analyzer is easily
accessible from all sides with some simple manipulations. The electronic control and
analytical units can be accessed and removed after opening the front of the analyzer with
the special key provided.
7.1.2 Maintenance schedule
The schedule is dependent on the type of application. In general we can say that a
monthly maintenance is required to perform the following tasks:
• Check all reagent and chemical containers. Refill if necessary
• Disconnect the tubing and replace the other way round
• Every 2 months replace all the tubing
• Check the measurement chamber and electrodes for any deposits. Clean if visibly
contaminated
• Check all tube connections for any leaks
• Check the system is running smoothly. Calibrate if necessary
7.1.3 Software upgrade
D A N G E R
Electrocution hazard. Always make sure the analyzer is turned off and power is disconnected
before upgrading the software.
If a new software version is made available it should be installed as follows:
1. Open the electronic unit from the rear and disconnect the data cable from terminal
J1 on the measurement board.
2. Unscrew the three screws on the metal shielding plate (on which the measurement
board is attached) and lift out. Do
not remove the measurement board from the
shielding plate.
3. Remove the old EEPROM (referenced 8810 ISE XXX.X ) from position IC19.
4. Install the new EEPROM with the latest software in the same position IC19.
5. Replace the metal shielding plate and screw back the three screws.
6. Reconnect the data cable to terminal J1 on the measurement board.
7. Close the electron unit.
8. Reconnect power to the analyzer.
9. Switch the analyzer on using the red switch on the front, while simultaneously
pressing on the
Select and Enter keys to load the new software with default values.
10. Program the analyzer with the your parameters noted on User configuration
on page 53 to reflect your user configuration.
7.1.4 Cleaning and decontamination
The analyzer does not normally require any cleaning or decontamination.
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