User's Manual

MTU Instruction
for Invensys Icon MTU/Electric Meter Assembly
Step 2 – (For Form 12S meters only –
Skip this step for Form 2S meters) The
neutral-blade of the Form 12S meter can
be moved. The figure below shows the
rear of the meter base with the neutral-
blade in the factory default, 9 o’clock
position (referenced by looking into the
meter socket.)
The neutral-blade can be moved to the 6
o’clock or 3 o’clock position to fit varying
Form 12S meter sockets using a #1
Phillips screwdriver, as follows:
a. Locate the configurable neutral-
blade – On the rear of the meter
base, locate the configurable
neutral-blade.
b. Remove screws – Remove the
two screws on either side of the
neutral-blade.
c. Remove neutral-blade – Remove
the neutral-blade from its molded
socket.
d. Seat neutral-blade – Seat the
neutral-blade into the desired
location.
Note: When replacing the screws, ensure
that they are snug, and that the heads are
flush with the neutral-blade.
e. Replace screws – Place the two
screws in the new neutral-blade
location.
Step 3 – Place the meter/MTU assembly
into the meter socket, carefully aligning
the contact blades with the corresponding
jaws in the meter base.
Step 4 – Install a T-bar and /or any seals
necessary to meet local requirements.
Step 5 – Make a final visual inspection to
ensure that the meter/MTU assembly is
seated and sealed properly.
Step 6 – Installation is now complete,
program the MTU using the STAR
Programmer Software and your MTU
Programmer.
When programming the integral MTU
mounted in this meter, hold the
programming coil above the top center of
the meter, as shown here.
Page 42