User Manual

Testing the Installation
If the L900 MIU is connected to an E-CODER register or another
register with an eight-digit output, the L900 MIU will transmit an
eight-digit read. For example, read 12345678 (E-CODER or other
eight-digit register output).
To test the installation, complete the following steps.
To avoid RF signal saturation of the HHU, position yourself at
least two to three feet from the L900 MIU.
1. Power up the HHU test device and start the testing programs
provided.
2. When the L900 MIU is installed correctly, its ID number(s)
and meter reading(s) appear on the display of the HHU. Verify
the correct meter reading(s) by comparing it to the meter’s dial.
If the reading(s) is the same, proceed to the next section.
3.
If a meter reading does not appear on the HHU display, or the
meter reading in the HHU display is not the same as the
reading on the meter’s dial:
l
Magnet swipe the L900 MIU using the magnet.
l
Verify all electrical connections.
l
Test the installation again.
4. If a ProRead encoder register is used:
l
Ensure the unit is programmed in three-wire mode.
l
Verify all electrical connections.
l
Magnet swipe the L900 MIU. (See Step 1.)
If a problem still exists, contact your Neptune sales
representative.
L900 MIU Pit Installation and Maintenance Guide 23
Chapter 4: Pit Installation