7.
Electrical Installations
109
After putting the electric system into operation, the function of
the residual current device must be checked. After voltage has
been applied to the switch
j
and it is on (set to I-ON) it must
set off when you press the test button
k
.
The rocker switch
n
(p. 107) jumps down; after it has successfully
been checked it must be switched back up to the "On" setting.
This check should be carried out at least once a month to ensure
that the residual current device functions perfectly in case there
should be a fault in the current.
The tripping time for the residual current device (RCD) with
a residual current of 30 mA is less than 0.1 seconds.
When the residual current device has been set off (even when
testing) the customised settings in all mains-operated devices
are lost and the default settings made by the manufacturer
will apply again.
If the automatic circuit breaker has gone off (other than if you have
switched it) you must wait a short while before switching it on again.
- If the automatic circuit breaker remains active, there was only
an overload.
- If the automatic circuit breaker goes off abruptly again, there is
either a short circuit or an earth fault.
Devices that set off during operation show that there is a defect;
they must be checked and/or repaired by an electrical engineering
specialist.
Switching it back on again and again will do no good. The
automatic circuit breaker also goes off when the rocker
switch is held firmly in place.
Operation when the motor is running
As soon as the motor is running, a relay connects the starter
battery and the van battery in parallel. Therefore, the dynamo
charges both batteries. If the vehicle engine is issued, both bat-
teries are disconnected from each other again. In this way, the
starter battery cannot be discharged by equipment in the van.
The absorber refrigerator* can only be operated on 12V when the
vehicle is driving. When the engine is not running, 12V operation
of the refrigerator will automatically be switched off.
Always turn the motor off before hooking up the 230V
mains connection via the CEE external socket.
