METER WP4C - Page 26

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SERVICE
3. Remove the lid screw located on the back panel (Figure20).
Figure20 Lid screw
4. Carefully remove the lid by pulling the back of the lid upward and then sliding the lid
back (away from the front of the case) and off the unit completely.
5. Remove black foam (Figure21).
Figure21 Black foam
6. Unscrew the two thumb screws that secure the sensor block (Figure22).
Figure22 Thumb screws