Replacing BMU801 - AWS310 - AWS310-SITE - AWS810 - AWS810-SOLAR - BMU801

BMU801 User Guide
Document code
M212710EN
Revision
A
Language
English
Product
AWS310
AWS310-SITE
AWS810
AWS810-SOLAR
BMU801
Document type
User guide

If you need to replace BMU801 installed in a weather station enclosure, follow the steps below.

Flat head screwdrivers
  1. Power off the station.
  2. Remove all cabling from BMU801.

    To have more slack in the wiring, you may need to cut the cable ties holding the wires.

    CAUTION To avoid damaging the wiring, be careful when cutting the cable ties.
  3. To remove BMU801 from the DIN rail, release the locking piece with a flat head screwdriver, and lift BMU801.
  4. In the new BMU801, set the battery capacity using the rotary switch on top of BMU801. With a maximum of 2.5‑mm flat head screwdriver, turn the switch to point at the same number as in the removed BMU801.
    CAUTION Make sure that you select the same capacity as the battery in your system has. Incorrect selection can cause damage to the battery and prevent or limit operation.
  5. Insert the new BMU801 on the DIN rail and snap it onto place.
  6. Connect the cables to the new BMU801.
  7. Use new cable ties to reattach the cables to the backplate.
  8. Power up the station.
  9. Wait for a while, and check from the BMU801 device status LED that the new BMU801 works properly.

    The device status LED should be blinking green.