DAF LF45, LF55 Series. Manual — part 394
16
1427090/03
EL001577
1
2
3
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5
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8
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53
1000
2100
2100
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
9001
2170
2170
2170
2170
2170
2170
1000
E349
1
2
2
4
1
C622
A13/702
A11/702
A10/703
4
732
B10/703
3
736
7
739
A10
713
6
762
7
738
1/710
A000
21
2
765
C022
1
2
10
739
12
762
C158
1
2
C159
1
2
10
738
G520
1
765
5/711
D942
1010
1000
1010
1000
2101
2170
2170
2100
E284
10A
G000
3
1
24
5
M
A2/
752
B525
A5/
752
C865
A
B
C866
A
B
C864
A
B
C736
A
B
C715
A
B
C727
A
B
C804
A
B
C748
A
B
C763
A
B
!
!
G507
G507
200440
2-65
5
ELECTRICAL SYSTEM
Electrical system
series
45/55
LF
200440
2-66
5
ELECTRICAL SYSTEM
Electrical system
series
45/55
LF
16
1427090/03
EL001578
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106
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2170
2029
2170
2170
D942
1010
1000
1010
1000
8/709
B1/700
6/708
2170
2170
C750
A
B
C880
A
B
C853
A
B
C870
A
B
C836
A
B
C725
A
B
C867
A
B
C774
A
B
C835
A
B
01
C765
A
B
25
1
7
6
3
800
1
800
200440
2-67
5
ELECTRICAL SYSTEM
Electrical system
series
45/55
LF
17.
AIR
C
ONDITIONING/HEA
TER
FAN
HEA
T
ER
FA
N
The
heater
motor
(B377)
is
supplied
w
ith
voltage
after
contact
through
fuse
E031.
The
motor
is
activated
when
the
heater
fan
switch
(C892)
is
turned,
so
that
earth
is
connected.
The
heater
fan
m
otor
is
fitted
w
ith
an
overheating
protection
device
between
contact
7
and
the
connection
points
of
the
operating
switch.
AIR
C
ONDITIONING
Depending
on
the
engine
temperature,
voltage
is
applied
to
w
ire
5189
from
pin
A1/743
of
the
V
IC
unit.
When
the
engine
temperature
goes
above
a
certain
value,
the
VIC
unit
switches
this
voltage
of
fs
o
as
to
prevent
the
engine
from
overheating.
When
the
temperature
falls
back
below
a
particular
temperature,
the
voltage
is
switched
on
again.
To
supply
the
air
conditioning
switch
(C893)
with
voltage,
the
parallel
switch
in
the
heater
fan
switch
(C892)
must
be
closed.
This
switch
is
closed
in
positions
1
to
4.
T
he
air-conditioning
compressor
temperature
switch
(E508)
prevents
the
heater
fan
from
freezing
and
is
closed
at
normal
operating
temperature.
The
air
conditioning
operating
switch,
high/low
pressure,
is
operated
depending
on
the
pressure
in
the
air
conditioning
system.
When
all
conditions
have
been
met,
the
air
conditioning
compressor
(B043)
is
activated.
Diode
D787
is
fitted
in
the
air
conditioning
compressor
so
as
to
damp
high
voltage
peaks
that
can
arise
during
switch-of
f.
200440
2-68
5
ELECTRICAL SYSTEM
Electrical system
series
45/55
LF
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