Sper Scientific LUCL-2006 Chlorine Meter - Manual (Page 16)

6. BATTERY REPLACEMENT
1)When the left corner of LCD display show " ", it
is necessary to replace the battery. However, in-spec.
measurement may still be made for several hours after
low battery indicator appears before the instrument
become inaccurate.
2)Loss the " Battery Cover Screws " and slide the
" Battery Cover " ( 3-9, Fig. 1 ) away from the
instrument and remove the battery.
3)Replace with DC 1.5 V battery ( UM4, AAA,
Alkaline/heavy duty ) x 6 PCs, and reinstate the cover.
4)Make sure the battery cover is secured after changing
the battery.
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