MBD-2 Operating Manual 18
15-00167, Rev 1
Figure 15: MBD-2 with O-Ring Removed
b. Ensure surface area for the O-Ring is clean.
Figure 16: MBD-2 without O-Ring and Inspection
c. Install the O-Ring on the flange. Run a fingertip around the top of the O-Ring to ensure it
is seated properly as shown in Figure 17, MBD-2 with Installed O-Ring below.
Figure 17: MBD-2 with Installed O-Ring
6.2 Internal Battery (Detector & RTC) Replacement
The internal battery cover should be opened only under a controlled environment.
Careful maintenance shall be ensured to prevent:
• misplacement of parts (screws securing the internal battery cover)
• contamination of the battery contact springs, which have direct access to the internal
electronics.
a. Remove the main battery cover and main battery in accordance with Step 3.2.1.1.
b. The Internal battery cover has three “Torx” pattern, size T6 screws.
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