Malmbergs DY-55L Instruction Manual page 20

Replacing the Battery
1. Remove the screws in the four corners of the control panel.
2. Once the screws are removed, carefully lift the control panel to access the PCB.
3. On the PCB is a 6f22 9V battery. Remove the battery and replace with new.
4. Refit the control panel onto the PCB.
5. Refit the four screws.
20
6F22 9V battery