Maintenance Schedule - Hach POLYMETRON 8810 Basis-Benutzerhandbuch

Option
INJ. REAG. 1/2
TIME REAG. 1/2
7.9 View calibration details (CAL PARAMETER option)
This option lets you view the details of the primary and last calibrations made by the analyzer.
1. Select CAL PARAMETER with the scrolling keys and press Enter.
2. Use the scroll keys to select LAST CAL or PRIMARY CAL, then scroll through the details by
pressing Enter.
7.10 Measurement cycle parameters (TIMING option)
Define the parameters for each measurement.
1. Select TIMING with the scrolling keys and press Enter.
Option Description
SAMPLE TIME Define the time (in seconds) the sample is injected into the measuring chamber.
SPRINKLER N Define the number of rinses required.
SPRINKLER t Define the duration (in seconds) of each rinse.
CYCLE TIME Define the duration (in minutes) of the measurement cycle.
DELAY t Define the time (in seconds) between each injection.
DEVIATION Define the electrode potential.
MEASURE t Define the measurement time. The final measurement is the average of all measurements
taken during this time.
Section 8 Maintenance
Electrocution hazard. Always make sure the analyzer is turned off and power is disconnected before carrying out
any maintenance on the analyzer.
8.1 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.

8.2 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
26 English
Description
Define the duration (in seconds) that the reagent is injected into the measurement
chamber.
Define the duration (in seconds) that the reagent remains in the sample before
measurement.
D A N G E R