Perkins 402F-05 Operation And Maintenance Manual page 42

42
Refill Capacities
Fluid Recommendations
• Drain the cooling system into a suitable container.
Dispose of the coolant according to local
regulations. Flush the system with clean water. Fill
the system with the Perkins ELC.
• Drain a portion of the cooling system into a
suitable container according to local regulations.
Then, fill the cooling system with premixed ELC.
This procedure should lower the contamination to
less than 10 percent.
• 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
Amine 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 antifreeze (glycol concentration) in order 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.
Adding the SCA to Heavy-Duty Coolant at
the Initial Fill
Commercial heavy-duty antifreeze that meets ASTM
D4985 specifications MAY require an addition of SCA
at the initial fill. Read the label or the instructions that
are provided by the OEM of the product.
Use the equation that is in Table 20 to determine the
amount of Perkins SCA that is required when the
cooling system is initially filled.
Table 20
Equation For Adding The SCA To The Heavy-Duty Coolant At
V is the total volume of the cooling system.
X is the amount of SCA that is required.
Table 21 is an example for using the equation that is
in Table 20 .
Table 21
Example Of The Equation For Adding The SCA To The Heavy-
Total Volume of the
Cooling System (V)
15 L (4 US gal)
Adding The SCA to The Heavy-Duty
Coolant For Maintenance
Heavy-duty antifreeze of all types REQUIRE periodic
additions of an SCA.
Test the antifreeze periodically for the concentration
of SCA. For the interval, refer to the Operation and
Maintenance Manual, "Maintenance Interval
Schedule" (Maintenance Section). Test the
concentration of SCA.
temperature
Additions of SCA are based on the results of the test.
The size of the cooling system determines the
amount of SCA that is needed.
Use the equation that is in Table 22 to determine the
amount of Perkins SCA that is required, if
necessary:
Table 22
Equation For Adding The SCA To The Heavy-Duty Coolant For
V is the total volume of the cooling system.
X is the amount of SCA that is required.
Table 23 is an example for using the equation that is
in Table 22 .
Table 23
Example Of The Equation For Adding The SCA To The Heavy-
Total Volume of the
Cooling System (V)
15 L (4 US gal)
The Initial Fill
V × 0.045 = X
Duty Coolant At The Initial Fill
Multiplication Amount of SCA
Factor that is Required (X)
× 0.045
Maintenance
V × 0.014 = X
Duty Coolant For Maintenance
Multiplication Amount of SCA
Factor that is Required (X)
× 0.014
SEBU9064
0.7 L (24 oz)
0.2 L (7 oz)