hymer BMC 550, Instruction Manual

Page: 134 / 252

8 Electrical system
134
B-MC - 12/18-2 - EHG-0016-01EN
8.9 Fuses
 Only replace defective fuses when the cause of the defect is known
and has been remedied.
 Replace defective fuses only after the power supply has been turned
off.
 Never bridge or repair fuses.
 Only replace faulty fuses with a new fuse with the same rating.
8.9.1 12 V fuses
The appliances connected to the 12 V power supply in the living area are
fused individually. The fuses are accessible at different positions in the vehi-
cle.
Before changing fuses, take the function, value and colour of the relevant
fuses from the following specifications. When changing fuses, only use flat
fuses with the values shown below.
Some signals are protected by "Polyswitch" fuses. Polyswitch is an internal
self-resetting fuse. After the overcurrent or short circuit has been remedied,
the operating current is enabled again automatically. This can take a few
seconds (cooling-down phase).
8.9.2 Positions of fuses
Most of the fuses can be found at one of the following positions:

In the transformer/rectifier

In the two fuse holders next to the transformer/rectifier

In the seat console of the driver's seat
Fig. 140 Transformer/rectifier and fuse
holders
The transformer/rectifier (Fig. 140,1) and the two fuse holders (Fig. 140,2)
are installed in a compartment of the double floor and are accessible via a
floor trap.
Transformer/rectifier with
fuse holders