Replace The Battery - HYDROLAB HL4 Manuel D'utilisation

Keep the instrument in a location where the sensors will not freeze or sensor damage will occur.
Clean the housing and the sensor guard
To prevent damage to some sensors and the instrument, do not use solvents that dissolve plastic to clean the
housing and sensor guard.
At regular intervals, examine the instrument housing and sensor guard. Clean the housing and
sensor guard as necessary to remove unwanted material and deposits.
1. Remove the sensor guard from the instrument.
2. Pour a minimum of 2.5 cm (1 in.) of pH 4 buffer or clean tap water into the storage/calibration
cup.
3. Install the storage/calibration cup on the instrument.
4. Clean the housing and sensor guard with:
• Mild detergent
• Non-toxic, degreasing solution, such as Simple Green
Makers, Inc.)
• Warm water
• Clean, soft toothbrush
• Soft cloth and/or cotton swabs
If necessary, soak the sensor guard and/or housing in water for at least 30 minutes to make the
contaminates soft and easier to remove.
5. Rinse the housing and sensor guard with clean water.
Clean the sensors
At regular intervals, examine the sensors for unwanted material, deposits (inorganic and biological)
and damage. Clean the sensors if unwanted material is found. In addition, clean the sensors if
sensor performance has degraded. Refer to the sensor documentation for cleaning instructions.
Replace any damaged parts (e.g., sensor membranes). Replace any parts with fouling (sedimentary
and/or biological) that affects performance and cannot be removed. Refer to the sensor
documentation for maintenance instructions.

Replace the battery

Explosion hazard. Incorrect battery installation can cause the release of explosive gases. Be sure that
the battery is of the approved chemical type and is inserted in the correct orientation.
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.
For instruments with an internal battery pack, replace the D-cell battery when the battery power level
is low. Refer to Figure 3
Operating Software window.
Replace the battery with the same type and rating. Refer to the internal battery pack requirements in
Specifications on page 3.
14 English
N O T I C E
N O T I C E
W A R N I N G
W A R N I N G
on page 7. The battery power level is shown at the top of the Hydrolab
®
(A registered trademark of Sunshine