(
OPERATOR'S STATION
Cab Temperature Controls
NOTE: For servicing electrical components
in
cab
side
console,
remove
access
pane
l
on
window
side
of
console.
BLOWER
SPEED
SWITCH (Al
~
Controls
operation of blower, Four positions are:
OFF,
LOW,
MEDIUM
and
HIGH
. The blower
rec
irculates cab air
as
well
as
drawing
in
outside
air to pressurize the
cab.
With door
and
window closed
and
blower
on
,
dust
and
dirt will
be
filtered out to keep
cab
interior
clean.
Adjust circular louvers (B)
(both
sides)
to
direct air where
needed,
for example,
to
defog window. Rectangular louvers
(C)
(both
si
des)
may
be
shut off or
opened
and
adjusted
to
operator preference.
AIR
CONDITIONING
TEMPERATURE
CONTROL (O) - Air conditioning is
OFF
when
control
(D)
is turned
fully
counter-clockwise.
Turning control clockwise decreases
cab
temperature. Blower switch
(A)
mu
st also
be
tumed
ON
before air conditioning system wi
ll
operate.
Regulate
cab
temperature with air conditioning
control
and
blower
speed
.
IMPORTANT:
If
humidity
is
high
it
may
be
necessary to
run
blower at HIGH speed
to
prevent evaporator freeze
up
.
HEATER TEMPERATURE
CONTROL (E) -
Heater
Is
off when control (E)
is
turned fully
counter-clockwise. Turning control clockwise
increases cab temperature. Regulate
cab
temperature
with
heater control
and
blower
speed.
NOTE: Heat
and
air conditioning systems
are
independent of each
oth
er.
To
avoid worki
ng
on
e
system against the other,
be
sure the system not
in
use
is
turned OFF at the appropriate
temperature control, unless
both
are required to
defog windows. There is
al
so
a shut-off valve for
the
heater circuit at the engine. Valve must
be
open
for heater to function. For maximum cooling
in
hot conditions, close valve
(G)
.
NOTE:
If
windows
fog
up
,
run
the air conditioni
ng
to
dehumidify the
cab
ai
r,
plus the heater to
control
cab
temperature.
Windshield Wiper Control
Control windshield wiper
using
knob
(F).
The
wiper
is
a manual park type. To park wi
pe
r
blade,
turn
wiper switch
OFF
when blade
is
at
extreme
end
of stroke.
19
CAB TEMPERATURE AND
WIPER CONTROLS
DIRECT AIR FLOW WITH LOUVERS
HEATER SHUT-OFF VALVE
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