User's Manual

Maintenance and Troubleshooting
30 R900 Wall and Pit MIU Installation and Maintenance Guide
Replacing the MIU Battery (Wall and Pit)
Follow these steps to change-out the pit R900 MIU’s internal bat-
tery:
Removing the Battery
1 Slowly remove the pit lid.
2 Remove the transmitter cover by removing the two Phillips
head crews located inside the back cavity of the main housing.
(See
Figure 39.)
3 Lift the transmitter cover from the MIU.
Figure 39 Removing the MIU Transmitter Cover
4 Remove the battery casing from the main housing by inserting
a flat-head screwdriver and dislodging the battery from the
battery compartment. (See
Figure 40.)
Figure 40 The Battery Compartment
Because the MIU is connected to both the antenna
in the pit lid and the meter in the pit base, take care
not to strain the cable when removing the lid.
transmitter cover
screw
flat-head
screwdriver
When removing the battery, it may be helpful to press on the connected
end while prying the other end.