Hudson 481 Series Owner's Manual page 70

HUDSON OWNER MANUAL
If more heat is needed move the lever to the right. After the lever is set, there will be little
need for re-adjustment as the heat is thermostatically controlled.
If cold air is delivered by the heater while the engine is warming up, close the cowl
ventilator until the engine heat indicator needle begins to move to the right, then open the
cowl ventilator.
Do not re-adjust the heat control during the
engine warm-up period in an attempt to get
quicker heat. The thermostatic control valve
remains wide open until the car temperature
rises to the regulated setting and moving the
control lever will not increase the heat flow.
When the control lever is moved to the extreme
right, the thermostatic valve is locked open and
maximum heat output is obtained regardless of
car temperature. When the control lever is
moved to the extreme left, the valve is locked
closed and no water flows through the heater.
This position is used for summer driving and
permits opening the cowl ventilator in hot or
rainy weather. The cowl duct is fitted with a
trap to prevent water entering through the open
cowl ventilator
All the air supplied by the Hudson Weather Control is fresh outside air, warmed and
reduced in relative humidity. This "dryer" air reduces fogging and frosting of the wind-
shield and windows. When starting out with a cold car, and particularly with full passenger
Figure 55
Figure 56
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