Maintenance - Truma BCU 120 Operating Instructions & Installation Instructions

Description
Operating with the main switch
(not included in the delivery scope)
When a main switch is used, the connected consumers can
be switched on and off. The switch is connected to the termi-
nals "MS".
If, when the main switch is on, the voltage of the battery
drops below 10.8 V, the consumers are shut down via a relay
after a delay of approx. 3 minutes.
It is possible to unlock the consumer output for around 3
minutes via an Emergency-On function. To do this, switch the
main switch "OFF" and "ON".
The consumers are automatically activated when the voltage
of the battery (e.g. via charging) exceeds 12.5 V.
Operating without the main switch
If the device is operated without a main switch, no EMER-
GENCY-ON is possible. The terminals "MS" need to be shunt-
ed with a wire (cross-section 0.75 mm²).
If the battery voltage drops below 10.8 V, the consumers are
switched off via a relay after a delay period of around 3 min-
utes. The consumers are automatically activated when the
voltage of the battery (e.g. via charging) exceeds 12.5 V.
Commissioning
The device is operational as soon as the operating voltage is on.

Maintenance

Clean the device using a dry and fluff-free cloth.
8
Disposal
The device must be disposed of in line with the administrative
regulations of the respective land in which it is used. National
regulations and laws (in Germany, for example, the Altfahrzeug-
Verordnung [old vehicle directive]) must be observed.
Technical Data
Operating voltage
10 – 15 V
Switching thresholds
Off at 10.8 V (delayed by 3 minutes)
On at 12.5 V
Switching current
Maximal 120 A
Current draw
1.8 mA (when load is switched off)
Ambient temperature
-20 °C to +50 °C
Configuration
In accordance with the VDE provisions and the device safety law
Dimensions / weight
Casing Aluminum
Length 205 mm
Width 145 mm
Height 85 mm
Weight 1 kg
The right to effect technical modifications is reserved!