Perkins 2806A-E18TA Operation And Maintenance Manual page 56

56
Maintenance Section
Fluid Recommendations
3. Fill the cooling system with a 33 percent solution of
Perkins ELC and operate the engine, ensure that
the thermostat opens. Stop the engine and allow
the engine to cool. Drain the coolant.
Note: Use distilled or deionized water in the solution.
4. Again, fill the cooling system with a 33 percent
solution of Perkins ELC and operate the engine
ensure that the thermostat opens. Stop the engine
and allow to cool.
5. Drain the cooling system.
NOTICE
Incorrect or incomplete flushing of the cooling system
can result in damage to copper and other metal
components.
NOTICE
Most commercial cooling system cleaning agents are
corrosive and their use is not recommended by
Perkins.
6. Fill the cooling system with the Perkins Premixed
ELC. Operate the engine. Ensure that all coolant
valves open then stop the engine. When cool
check the coolant level.
ELC Cooling System Contamination
NOTICE
Mixing ELC with other products reduces the effective-
ness of the ELC and shortens the ELC service life.
Failure to follow these recommendations can result in
shortened cooling system component life.
ELC cooling systems can withstand contamination to
a maximum of 10 percent of conventional heavy-duty
antifreeze or SCA. If the contamination exceeds 10
percent of the total system capacity, perform ONE of
the following procedures:
• Drain the cooling system into a suitable container.
Dispose of the coolant according to local
regulations. Flush the system with a 5 to 10
percent solution of Perkins ELC. Fill the system
with the Perkins ELC.
• Maintain the system as a conventional Heavy-
Duty Coolant. Treat the system with an SCA.
Change the coolant at the interval that is
recommended for the conventional Heavy-Duty
Coolant.
Commercial Heavy-Duty Antifreeze and
SCA
NOTICE
Commercial Heavy-Duty Coolant which contains
Amines as part of the corrosion protection system
must not be used.
NOTICE
Never operate an engine without water temperature
regulators in the cooling system. Water temperature
regulators help to maintain the engine coolant at the
correct operating temperature. Cooling system prob-
lems can develop without water
regulators.
Check the glycol concentration to ensure adequate
protection against boiling or freezing. Perkins
recommends the use of a refractometer for checking
the glycol concentration. A hydrometer should not be
used.
Perkins engine cooling systems should be tested at
500 hour intervals for the concentration of SCA.
Additions of SCA are based on the results of the test.
An SCA that is liquid may be needed at 500 hour
intervals.
NOTICE
Do not mix types and brands of coolant.
Do not mix brands and types of SCAs.
Do not mix SCAs and Extenders.
Only use SCAs or Extender approved by coolant
manufacturer and compatible with coolant.
Adding the SCA to Heavy-Duty Coolant
at the Initial Fill
Coolants conforming to ASTM D4985 and not
conforming D6210 require the addition of SCA at
initial fill.
Use the equation that is in Table 8 to determine the
amount of SCA that is required when the cooling
system is initially filled.
Table 8
Equation For Adding The SCA To The Heavy-Duty Coolant At
The Initial Fill
V × 0.07 = X
V is the total volume of the cooling system.
X is the amount of SCA that is required.
Table 9 is an example for using the equation that is in
Table 8 .
SEBU9074-06
temperature