CTEK MXT 4000 - Manual (Page 4)

4. Normal charging is indicated by the following lamps: Deep Discharged (1), Bulk Charge (2),
Absorption Charge (3) or Maintenance Charging (4). When the maintenance lamp is lit, the bat-
tery is fully charged. The charge will restart if the voltage drops. The charger can be connected
for months.
RECOND is indicated when the lamp for these setting is lit (5).
5. If the battery cables are connected incorrectly, the reverse polarity protection will make sure
that neither the charger nor the battery are damaged. In this case, the red warning lamp (0) will
be lit.
6. If nothing happens. If the setting lamp is lit but no other light goes on, the connection to the
battery or to the chassis may be bad, or the battery may be bad. Start by improving the contact
between the battery and the charger.
7. Charging can be interrupted at any time by disconnecting the power from the wall socket or
by putting the charger in "Standby" mode (lamp A). Always disconnect the power cable from
the wall socket before removing the battery cables. When you interrupt charging of a battery
mounted in a vehicle, always disconnect the battery cable from the chassis before removing the
other battery cable.
IMPORTANT INFORMATION
Please note that the battery pack in the 24V system in most cases consists of more than one
battery. They are linked up to the 24V system, but the individual batteries generally have a lower
voltage. Therefore it is important for the charger to be connected correctly.
CHARGING PHASES
Mode chosen: ”NORMAL” or ”SNOWFLAKE”
MULTI XT 4000 is a multi stage fully automatic charger. Lamp B for chosen setting ”NORMAL”
and lamp C for chosen setting ”SNOWFLAKE”.
Desulphation (Lamp 1, blinking)
Desulphation with pulsing for sulphated batteries. Indicated by blinking lamp 1.
Start (Lamp 1)
Starting phase for charging. The starting phase continues until the battery’s terminal voltage
has risen over a preset level. At this point, charging goes into the bulk phase. If the terminal
voltage has not reached the preset level within 8 hours, charging is suspended. The error mode
is indicated. This indicates a battery which is faulty or has too large capacity. If a large battery
is charged that has been severely discharged, it may be necessary to restart the charger after 8
hours. Start is indicated by lamp 1.
Bulk (Lamp 2)
Primary charging where approximately 80% of the charging takes place. The charger delivers
maximum voltage until the terminal voltage has risen to the preset level. After a number of
hours, the charger goes on to the next phase, even if maximum voltage is not reached. Bulk is
indicated by lamp 2.
Absorption (Lamp 3)
Final charging, voltage is kept at the preset level. During this phase, the voltage is gradually
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).