Do you have a question about the DAB E.SYBOX MINI and is the answer not in the manual?
Remove external plugs, motor-access plug, and unit covers.
Disconnect internal sensors, power cables, and remove the main board.
Separate pump body, stages, mechanical seal, and motor assembly.
Reassemble pump stages, impeller, mechanical seal, washer, and nut.
Reconnect pump body, sensors, pressure vessel, and main board.
Reinstall external covers, power cable, and secure all plugs.