HYDROLAB HL7 - 5.2 Product overview; 5.3 Maintenance; 5.3.1 Clean the central cleaning brush; 5.3.2 Replace the brush

5.2 Product overview
N O T I C E
Do not manually turn the wiper arm because wiper motor damage can occur.
The central cleaning brush (9195800) is shown in Figure 5. The central cleaning brush cleans the
surrounding sensors at the start of the logging warm-up time.
Note: The central cleaning brush is only available for the HL7 sonde.
Refer to Sensor Settings in the online help to manually clean the surrounding sensors and to set the
number of revolutions in a cleaning cycle.
Figure 5 Central cleaning brush (9195800)
5.3 Maintenance
5.3.1 Clean the central cleaning brush
N O T I C E
To prevent damage, do not use solvents that dissolve plastic to clean the central cleaning brush.
Note: It may be necessary to clean the central cleaning brush more frequently if it is used in environments with
sediment (i.e., silt), mineral precipitate, biofilms, barnacles or pollutants such as oil.
1. Clean the central cleaning brush with:
• Mild detergent
• Non-toxic, degreasing solution, such as Simple Green
®
(A registered trademark of Sunshine
Makers, Inc.)
• Warm water
• Clean, soft toothbrush
• Soft cloth and/or cotton swabs
If necessary, soak the central cleaning brush in clean water for at least 30 minutes to make the
contamination softer and easier to remove.
Note: Do not use dishwashing liquid to clean the central cleaning brush. Dishwashing liquid and household
cleaners with skin moisturizer can put a film on the sensors.
2. Rinse the central cleaning brush with clean water.
3. If the substance cannot be removed, contact technical support.
5.3.2 Replace the brush
Replace the brush when wear or damage is seen on the brush. Refer to the documentation supplied
with the maintenance kit (9480900) for the central cleaning brush. Clean the central cleaning brush
before maintenance.
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