HYDROLAB HL Série Manuel D'utilisation page 20

Replace the battery(s)
Explosion hazard. An expired battery can cause hydrogen gas buildup inside the instrument. Replace
the battery before it expires. Do not store the instrument for long periods with a battery installed.
Dispose of batteries in accordance with local, regional and national regulations.
For HL4 sondes with an internal battery pack, replace the D-cell alkaline battery when the battery
power level is low. Refer to
For HL7 sondes, replace the four D-cell alkaline batteries when the battery power level is low. Refer
to Install the batteries—HL7 sonde
when the last battery is installed. Refer to
not have sufficient power.
Note: The battery power level is shown at the top of the Hydrolab Operating Software window.
Make sure that the sonde is horizontal when the battery compartment is opened to keep the water on
the cover out of the battery compartment. If water gets into the battery compartment, remove the
battery, pour the water out and fully dry the compartment with a towel. Let the battery compartment
air dry fully before use to prevent corrosion.
Note: The internal clock battery is not user-replaceable without authorization from the manufacturer.
Figure 12 Battery indicator light
Examine the O-rings and sealing gasket
1. At regular intervals, examine the O-rings and sealing gasket in the mooring cap for unwanted
material, wear or damage. Refer to
2. Remove any unwanted material from the O-rings and mooring cap.
3. Replace any O-rings with visible damage or wear (e.g., cracks or missing pieces). Replace with
the O-rings from the manufacturer.
4. Apply silicone grease to the O-rings to prevent them from sticking and being pulled out of
position.
5. Replace the mooring cap when damage or wear is visible on the sealing gasket.
20 English
W A R N I N G
Figure 5 on page 8.
on page 9. Make sure that the battery indicator light flashes green
Figure 12. If the indicator light flashes red, the batteries do
Figure 13 to Figure 15.