Section 5 Maintenance; Maintenance Schedule; Cleaning Measuring Chamber - Hach ULTRATURB sc User Manual

Section 5

5.1 Maintenance schedule

5.2 Cleaning measuring chamber

Maintenance
It has been possible to reduce the scope of the maintenance to be performed by
the user to only a few actions. Clearly summarised in a table and described in
detail in the following sections, these actions can be quickly and straightforwardly
performed by qualified personnel.
Maintenance task
Clean measuring chamber:
Replace wiper profile
(only plus and seawater version)
Replace desiccant
Monitor test equipment (CVM dry
standard)
Check zero point
Check gradient
The cleanliness of the measuring chamber is crucial for correct measured results.
This cylindrical optical measuring chamber has a rotating wiper with three wiper
profiles (only on plus and seawater version); these prevent normal soiling of the
optical system as it starts to build up. With very stubborn deposits, manual
cleaning with a suitable cleaning agent (e.g. citric acid) is recommended.
CAUTION
Observe safety regulations and wear safety clothing!
• Safety glasses
• Gloves
• Overalls
1. Open the MAIN MENU.
2. Choose SENSOR SETUP and accept.
3. Choose the related sensor and accept.
4. Choose TEST/MAINT and accept.
5. Choose MAINT. PROC and accept.
6. Choose CLN. MEAS CHAMB and accept.
7. Shut-off the feed and accept TURN OFF SAMPLE INLET.
8. Drain the measuring chamber via the lower feed union and accept DRAIN
MEAS. CHAMBER.
Interval
Dependent on the substances contained
in the water
After 1200 cycles
Every 2 years
Every 2 years
(factory test with certification)
Dependent on the substances contained
in the water
At least once a year
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