Xylem MULTI 3400i pH/Oxi MULTI-PARAMETER METERS - Manual (Page 61)

pH/ 3400i Maintenance, cleaning, disposal
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5 Maintenance, cleaning, disposal
5.1 Maintenance
The measuring instrument is almost maintenance-free.
The only maintenance task is replacing the batteries.
LoBat on the display indicates that the batteries should be changed.
The batteries are then largely depleted.
Replacing the batteries
Warning
Make sure that the poles of the batteries are the right way round.
The
± signs on the batteries must correspond to the ± signs in the bat-
tery compartment. Only use leakproof alkaline manganese batteries.
1 Open the housing after the instrument has been switched off:
– Undo the four screws on the underside of the instrument
– Pull down the lower cover (1).
2 If necessary, take the four depleted batteries (2) out of the bat-
tery compartment.
3 Place four new batteries (type Mignon AA) in the battery com-
partment.
4 Close the lower cover (1).
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2