Nortec ME Control - Manual (Page 70)

70 Fault elimination
7.6 Replacing the fuses and backup battery in the control unit
The fuses of the control unit must be replaced by authorized personnel only (e.g. electrician).
Replace fuses of the control unit only with fuses matching the specifications below with the appropriate
nominal current capacity .
Never use refurbished fuses. Do not bridge the fuse holder.
To replace the fuses or the backup battery proceed as follows:
1. Disconnect control unit from the mains by switching off the electrical isolator and secure electrical
isolator in “Off” position against inadvertent switching on.
2. Undo the screw of the front cover of the control unit, then remove the front cover.
3. Open control unit inner door.
4. Replace desired fuse or the backup battery.
DANGER!
Fuse contact protection must be relocated after the fuse has been replaced.
5. Close control unit inner door.
6. Relocate front cover on control unit and lock it with the retaining screw.
7. Reconnect control to the mains by switching on the electrical isolator.
F2= 630 mA, slow acting
F1= 6,3 A, slow acting
Contact protection
Backup battery 3V (CR 2032)
Contact protection
Fig. 10: Replacing the fuses and backup battery in the control unit