System Operation To Ensure Maximum Cooling Efficiency - Kenworth Y53-1024 Operator's Manual

System Operation to Ensure Maximum Cooling
Efficiency
In order to achieve 8 to 10 hours of engine-off cooling many factors must be
considered that will affect the systems cooling ability:
• Vehicle Color
• Ambient Temperature
• Initial Compartment Temperature
• Intake Air Mix
• Sleeper Curtain Position
• Window Coverings
The cooling system is meant to be a temperature maintained system, not
a temperature pull-down system. That is, it should be used to maintain
an already cooled sleeper compartment, not to lower the temperature of a
warm sleeper.
For maximum cooling ability:
• The sleeper compartment should already be at a comfortable tem-
perature using the cab A/C system.
• The window covers and sleeper curtain should be in place and
closed.
• The recirculation vents on the passenger's side must be fully opened.
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• The Fresh/Recirculation Switch should be in the RECIRC position.
• The Temperature Control Dial of the sleeper should be in the green
band.
• The filter must be clean and clear of dust and pollen.
Y53-1024 12/06
Heating and Air Conditioning System
Kenworth