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MAINTENANCE AND REPAIR
If there appears to be a malfunction during the
operation of the meter, the following steps should be
performed in order to isolate the cause of the problem.
1. Check the battery. Replace the battery
immediately when the " " symbol appears on the
LCD.
2. Review the operating instructions for possible
mistakes in operating procedure.
Except for the replacement of the battery, repair of the
meter should be performed only by a Factory Authorized
Service Center or by other qualified instrument service
personnel. The front panel and case can be cleaned with
a mild solution of detergent and water. Apply sparingly
with a soft cloth and allow to dry completely before
using. Do not use aromatic hydrocarbons or chlorinated
solvents for cleaning.
Make sure the electrode is clean! Between
measurements, rinse the electrode with deionised water.
If the eletrode has been exposed to a solvent immiscible
with water, clean it with a solvent miscible with water
e.g. ethanol or acetone and rinse carefully with water.
Store the electrode carefully! Before storing, rinse it
carefully in deionized water and store DRY.
BATTERY REPLACEMENT
1. Turn off the meter and loose the battery cover in
counter-clockwise direction.
2. Replace the old batteries with four new LR44
button cells.
3. Put back the battery cover and turn it tightly. the
Red LED Low Battery indicator illuminates. The
batteries should be replaced as quickly as possible.
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