Manual

handylab pH/LF 12 Maintenance, cleaning, disposal

ba75370e03 11/2009

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 bat-

teries 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 battery

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).