IC Bus CE Series 2020, Operation And Maintenance Manual

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Maintenance
For Ultra ELC equipped vehicles use only water filters without
Supplemental Coolant Additives (SCAs) as SCAs are not
necessary with Ultra ELC. Any time a silicone gasket / seal
exposed to the coolant is replaced while using Ultra ELC, a
fresh charge of silicates must be added to the coolant to protect
the new gasket / seal.
IC Bus recommends Ultra ELC due to its ease of maintenance
and lower long-term cost of operation. Any system using or
contaminated with more than 10% conventional coolant must be
maintained like conventional coolant and receive regular tests
for Supplemental Coolant Additive (SCA) levels.
Coolant Concentration / Freeze Point
CAUTION
To prevent vehicle and or engine component
damage, always use the specified coolant to
top-off the cooling systems.
Failure to do so
may result in the loss of extended life properties.
Should top-off occur with conventional coolant(s)
exceeding 10% of the total cooling system
capacity, drain and refill with the proper coolant.
Check the cooling systems twice a year to ensure proper
coolant / water concentrations. A 50/50 mixture created in the
shop using coolant concentrate and water, Shell Rotella
® ELC
pre-Mixed coolant (RED) or Fleetrite ® NOAT ELC premixed
coolant (RED) and will provide freeze protection down to 34°F
(-37°C) if no further dilution is experienced during installation.
Concentrations more than 67% are not recommended. The use
of ELC pre-mix to make up for coolant loss will conveniently
ensure the glycol / water concentrations stay in balance.
Fan Clutch
Inspect for proper operation, secure electrical connections, or air
supply as appropriate. See the IC Bus
® CE Bus Service Manual
for details.
Heater and Coolant Hose Inspection and Replacement
Guide
Proper maintenance and inspection of the heater and coolant
distribution system is required to maximize hose life, maintain
performance of the system, and avoid potential failures.
Poorly maintained coolant is cause for hose failure. Coolant level
and condition should be inspected on a regular basis.
• Check coolant level as part of the daily inspection.
• Check coolant concentration per coolant manufacturer
requirements.
Heater and coolant hose inspections should be performed on
an annual basis, or anytime a hose repair is made. To properly
inspect engine and body heater hoses, protective metal or
plastic covers and closeout panels are to be removed to allow
inspection of the complete heater and coolant / hose system.
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