CTEK MULTI US 7002 Mode D'emploi page 10

Absorption (Lamp 3)
Final charging, voltage is kept at the preset level. During this phase, the voltage is gradu-
ally reduced. If the maximum length of time for Absorption is exceeded, the charger
automatically continues with Analysis. Absorption is indicated by lamp 3.
Analysis (Lamp 3)
Charging is suspended for a short period and the battery voltage measured. If it falls too
quickly, the battery is probably faulty. Charging is suspended and an error is indicated
(lamp 0).
Maintenance charging - float (Lamp 4)
During the first 10 days of maintenance charging the battery is maintained with constant
voltage, 13.6V. Float-maintenance is indicated by lamp 4.
Maintenance charging - pulse (Lamp 4)
The state of charge varies between 95% and 100%. The battery receives a pulse when
the voltage sinks, keeping the battery in good shape when it is not being used. The char-
ger can be connected for months at a time.
If the battery is charged and/or the battery's terminal voltage drops, the charger starts a
charge pulse until the voltage has reached the preset level, 14.4V or 14.7V. The charge
pulse is then interrupted and the cycle is repeated as long as the charger is in pulse main-
tenance phase. If the terminal voltage drops even lower, the charger automatically reverts
to the beginning of the charging curve. Pulse maintenance phase is indicated by lamp 4. If
possible, check the water level in the battery.
Chosen mode: "SUPPLY"
MULTI US 7002 has a Supply mode setting which has a constant voltage of 13.6V and
current up to 7A. This mode can also be used for maintenance charging of an already
fully charged battery, called Float maintenance. This type of charging keeps the battery
at 100% charge. The constant small overcharge can also increase water loss. A battery
does not have to be connected for the charger to deliver voltage. This means that the
spark protection is not active in this mode. It is not appropriate to charge a completely
discharged battery in Supply mode, since this will not result in a completely charged
battery. In this mode, MULTI US 7002 can also be used as a power generation unit for
operating equipment that requires 13.6V and a maximum of 7A. If the selected current
exceeds 7A, the output voltage will drop as the load increases. The charger has electronic
overload protection in this mode, which is activated if the charge is so great that the output
voltage from the charger falls below around 9V and the current ís around 7A. In the event
of an overload, the charger goes into error mode (lamp 0). Supply mode is indicated with
lamp D and lamp 5.
10 • US