MLI Ultra 12/1250, 24/1250 – User and Installation Manual
WARNING!
The wire and fuse sizes stated in this manual are only guidelines. Cross section depends on the
maximum system current.
Always comply with all local rules and regulations.
Installation procedure for a single unit
WARNING!
In installations with a negative earth: Connect the negative cable last of all to
prevent short circuiting.
WARNING!
Never mount a stud fuse directly to the battery terminal without a fuse holder! If there is not
enough space, use a separate bus bar to mount the fuse on.
Step 1. Switch off all loads and chargers.
Step 2. Insert the handle into the recesses on the top of the battery.
Step 3. Out of the box, the battery is on (switch is closed). Press the Battery switch-button to switch-off
(safety disconnect). LED C will blink for 1 minute to indicate that the battery is off (switch is
open).
Step 4. Secure the battery in place.
Step 5. Mount an MRBF fuse holder directly on the battery's POSITIVE terminal, add the fuse and the
POSITIVE cable. Tighten the bolt. Never mount a stud fuse directly on the battery terminal.
Always use the isolated fuse holder! Otherwise the fuse will not work! See the following figure.
A. + terminal
B. Fuse holder
C. Fuse
D. Positive cable
E. Plain washer
F. Spring washer
Figure 4: mounting a stud fuse
Connect the negative cable to the – terminal.
Recommended torques: 14.7 – 19.6 Nm / 130 – 170 InLbs.
Step 6. Option: connect the 6-pin auxiliary connector cable. See page 12 for details.
Step 7. Option: connect communication cables.
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