User's Manual
Itron Meter Installation
3. Align the index wriggler (1) with the ERT module drive post (shaft, 2).
4. Carefully slide the index onto the mounting screws. Verify the 100G housing drive post makes positive
engagement with the index wriggler.
Caution Indexes have varying drive mechanism styles. Failure to align the ERT shaft with the index
drive post can cause binding and lead to poor registration or meter failure. To verify proper engagement of
the index to the ERT shaft, spin the wriggler one clockwise rotation, then one-counterclockwise rotation.
Do not spin the wriggler more than one complete rotation. The wriggler should spin freely, with little or
no resistance.
5. Hold the index in place and tighten the index mounting screws.
6. Slide the ERT module cover over the index and housing. Verify the cover is installed correctly. The label
should be clearly visible and easily read.
TDC-0823-014 100G Series Gas ERT Module Installation Guide, Direct Mount 44
Proprietary and Confidential