Maintaining And Cleaning The Device - Dometic SMP439-11 Installation And Operating Manual

SMP439-11 (7LA.915.681)
1: I phase (bulk)
The empty battery is charged with constant current (100 % charging current). As
soon as the battery voltage has reached the charging voltage the charging current
decreases.
2, 3, 4: U0 phase (absorption)
During the 3-step absorption phase (U0 phase) the voltage remains constant (U0).
Once the battery is completely charged, the U0 phase has finished.
5: U phase (float)
After the U0 phase, the battery charger switches to conservation charging function
(see chapter "Output data" on page 18) (U phase).
Connected DC loads are powered by the device. Only if the power required
exceeds the capacity of the device is this surplus power provided by the battery.
6: 12-day conditioning
Every 12 days and only if battery voltage is below 12.8 V, the battery charger
switches back to phase 1 in order to revive the battery and prevent any fatigue
symptoms such as sulfation. If battery voltage is over 12.8 V, the battery charger
switches back to phases 2 to 4 for 85 minutes and switches then to phase 5.
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Maintaining and cleaning the device

A
NOTICE!
Do not use any sharp or hard objects for cleaning since they may
damage the device.
1. Disconnect the device from the power supply.
2. Disconnect the device from the battery.
3. Prevent the device from being switched on.
4. Occasionally clean the device with a damp cloth.
5. Regularly clean the vents.
6. Check the electrical wiring at least once a year.
7. Repair any defects such as loose connections or burnt cables.
EN
Maintaining and cleaning the device
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