Enerpac DGR-2 Fiche D'instructions page 14

6.0 BATTERY REPLACEMENT
The gauge is powered by two 1.5 volt type
AA alkaline batteries. In normal service, the
batteries will last approximately 2000 hours
before requiring replacement. Actual battery life
will vary depending on gauge usage, ambient
temperature and other factors.
Replace the batteries as described in the
following procedure:
1. Slide the protective boot (not shown) off
of the gauge housing.
2. Grip knurled back cover and rotate
counter-clockwise until the 'unlock' icon
is in alignment with the arrow – this is on
the housing at the base of the pressure
connection (see view A).
3. Remove cover by pulling straight back
and replace AA alkaline batteries
accordingly; ensure that the batteries
are in the proper polarity position (see
view B).
4. For reattachment of cover, align the
'unlock' icon with the arrow, push cover
straight in then turn clockwise until the
arrow is in alignment with the 'Lock' icon
(see view C).
5. Reinstall the protective boot (not shown)
on the gauge housing.
Note: Reinstallation of the back cover may
cause the gauge to read negative pressure.
This is a temporary issue as the internal case
pressure will be relieved by the case vent and
equalize with atmospheric pressure (90% of
the off set will equalize within 1 minute, the
remaining 10% may take up to 5 minutes).
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A
B
C