ecactus WH-SPHA3.6H-5.12kWh User Manual page 18

Step 4 : Fix expansion tube
Find the expansion screw from the inverter box accessory package and hammer
it into the pre-drilled hole so that its surface is flush with the wall.
Step 5 ： Fix battery box and back plate
Rotate the back plate in place and spin the expansion pipe into the locking back plate
with self- tapping screws (note that the battery box is fixed with the back plate).
Replace the battery box and align the expansion pipe with the backboard hole, and
then spin the self- tapping screws into it until the screw plane is pressed on the back
plate.
Step 6 ：Back plate pre-tightening
Remove the installation back plate from the inverter attachment package
and pre-tight the back plate to the top of the battery box with two M4*10
screws, as shown in the figure below.
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