IC Bus CE Series 2020, Operation And Maintenance Manual

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Maintenance
Heater System
Check all heating / cooling fans for operation. Ensure heater
cut-off valves are opened / closed during appropriate cold /
warm months for greatest passenger comfort. Maintain heat
exchanger air filters (if equipped). The driver-side ’s heater filter
is located behind the grill near the floor, to the left of the driver’s
seat. The optional step well heater filter is located behind the
grill to the front of the step well. Under seat heaters may have
an optional filter on the top surface of each heater box.
Heater booster pumps should not be run dry for more than 30
seconds. This may cause the seals to fail.
Integrated Air Conditioning (IC Air) System
The following conditions require the immediate attention of your
nearest authorized IC Air Service Center.
• Vibration and / or noise from engine compartment
• Oil around refrigeration hose connections
• Water dripping from evaporator and / or air ducts
• Vibration and / or noise from the evaporator area
• Noticeable decrease in system performance
• Reduced air flow (this condition is normally a result of dirty
or clogged evaporator filters).
Noise Emissions – Maintenance, Use and Repair
Instructions for Proper Maintenance
In order to comply with federal exterior noise regulations, your
vehicle may be equipped with noise emission items that must
be properly maintained, used, and repaired. Depending upon
the vehicle configuration, it may incorporate all or some of the
following:
Air Intake System
• Air Cleaner – should be inspected and its location should
not be altered. Do not alter inlet and outlet piping.
Body
• Wheel Well – splash shields, cab shields, and underhood
insulation should be inspected for deterioration,
dislocation, and orientation and repaired or replaced as
necessary.
Cooling System
• Check fan for damage to blades. Replace, if damaged,
with manufacturer's recommended parts.
Inspect for
fan-to-shroud interference and any damage to shroud,
such as cracks and holes.
• Fan speed ratio should not be changed and fan spacer
dimensions and position should not be altered.
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