CTEK D250TS User Manual

MANUAL

CONGRATULATIONS

Congratulations on purchasing your new CTEK professional 24V DC/DC switch mode battery
charger, 12V converter and battery equalizer. This charger is part of a range of professional bat­tery chargers from CTEK SWEDEN AB. It represents the latest technology in battery charging with
charging and analysis in 4 steps with temperature compensation.

Read this User Manual and follow the instructions carefully before using your new charger.

SAFETY

• The charger is designed for 24V lead-acid batteries mounted into vehicles.
Do not use the charger for any other purpose

• Use safety glasses when connecting or disconnecting a battery.

• Battery acid is corrosive. Rinse immediately with water if acid comes into contact with skin
or eyes. Seek medical advice.

• Make sure that the cables are not being pinched or in contact with warm surfaces
or sharp edges.

• While charging, a battery can emit explosive gases, avoid sparks in the immediate area.

• Always provide for proper ventilation during charging.

• Avoid covering the charger.

D250TS

The D250TS has one 24V input and two alternating outputs. One output charge a 24V
battery and the other provides 50% of the input voltage to the midpoint of a 24V system. This
enables connection of 12V consumers to the battery string and also equalizing this battery
string, for longer battery life.

D250TS

FEATURES:

• Multi-step10A temperature compensated battery charging and battery maintenance.

• Battery separation of Starter and Service batteries.

• Equalization of Service batteries

• Makes connection of 12V consumers directly to 24V Service battery possible.

• When the charger is correctly connected the charger will output 24V on the status signal wire.
Connection of a 24V lamp (max 2W) to the status signal wire will indicate a correctly con­nected charger.

• The charger will maintain the starter battery untill the supply is below 14V. To avoid draining the
service battery always connect a charger to the service battery when the vehicle is not used for
a longer period.

Service ground

+IN +OUT

Service Battery

24V+

Service Battery Midpoint

D250TS

Starter Battery

24V+

Status signal wire

EQU

Temperature sensor

EN

EN • 3

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INSTALLATION OF UNIT

1. Attach the temperature sensor holder on a flat surface on one Starter battery. Position it as close
as possible to a positive post.

2. Use the included drill template. Wiring is simplified if the units are installed according to the drill
template, but other setups are possible.

3. Install the unit(s) on a flat surface where it can be properly fixed and where the unit is not
exposed to fuels, oils or splashes of dirt.

4. Mount the unit with screws intended for the surface and attach it with one screw in each of the
four holes in the corners of the unit. See picture 1. Mount the unit with M4 or ST4.2 screws. The
required torque depends on the surface for mounting.

DRILL TEMPLATE

Ø 5mm

168

mm

Figure 1

Service ground

mm

90,6

Service Battery Midpoint

Status signal wire

Service Battery

24V+

Starter Battery

24V+

2Nm

Temp sensor

4 • EN

20015884C D250TS, Manual, Print file 002.indd 4 2011-12-20 13:27:13