Maintenance Schedule; Cleaning And Decontamination - Hach Polymetron 8810 pH Manuel D'utilisation De Base

Option Description
CYCLE TIME Define the duration (in minutes) of the measurement cycle.
LIM. TIT. t Define the maximum duration (in minutes) of a titration. If this time is exceeded a system
alarm is triggered
Maintenance
Electrocution hazard. Always make sure the analyzer is turned off and power is disconnected before carrying out
any maintenance on the analyzer.
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.

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

Cleaning and decontamination

The analyzer does not normally require any cleaning or decontamination.
If needed, clean the exterior of the instrument with a moist cloth and a mild soap solution. Never use
cleaning agents such as turpentine, acetone or similar products to clean the instrument, including the
display and any accessories.
Shutdown
Stopping the measurement cycle
Select STOP in the main menu and press Enter. The message stopped is displayed.
Short shutdown (e.g. weekend)
Select STAND BY in the main menu and press Enter to put the system in a defined standby
condition. The measurement chamber is drained, rinsed, and refilled with rinse water.
Prolonged shutdown
If the system is shut down for a long period of time the electrodes must be cleaned and the
measurement chamber rinsed. It is preferable to then remove the electrodes and store them in a
buffer solution until the system is restarted. Under no condition must the electrodes be left in an
empty measurement chamber as this will cause them to dry out and become damaged. Finally, turn
the power off.
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