C7
-------------
Ro//s-Royc.e
&
Bentley-------
Air
Conditioning
System
Manual
Section C3
ELECTRICAL COMPONENTS
THE BLOWER MOTOR RESISTANCES
Two resistance units are incorporated in the circuits
for the two blower
motors
.
The
resistances
are
mounted together
on
the right-
hand
side
of
the bulkhead and secured by screws.
The
resistance unit
mounted
to the right
is
in circuit
with the right-hand blower
motor.
The resistance consists
of
a wire coil inside a
domed fibre cover.
The
coil has a centre tapping for
medium speed
motor
operation.
THE
BLOWER MOTORS
The twin blower motors are situated at each end
of
the
evaporator
casing in the boot. They are
iden tic a I uni ts and are
sel
f-1
u br ica ting, th
us
req
ui
ring
no
attention.
Each
motor
has a centrifugal drum-shaped alu-
minium fan which draws air, from the central duct
on
the parcel shelf, through the
evaporator
matrix,
and
discharges through its individual
duct
in the rear
quarter.
The
two motors are operated independently
by
the
push-button
control panel adjacent to the steering
column. Three speeds are made available by the
introduction
of
resistances with centre tappings.
Fig. 7 Blower Motor Resistances
Section CJ
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