Perkins XGA 1600 Series Operation And Maintenance Manual page 58

1600 series industrial engine
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58
Maintenance Section
Refill Capacities
ELC Cooling System Contamination
NOTICE
Mixing ELC with other products reduces the effective-
ness of the ELC and shortens the ELC service life.
Use only Perkins Products for premixed or concen-
trate coolants. Failure to follow these recommenda-
tions can result in shortened cooling system compo-
nent 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 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 temperature regula-
tors.
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 10 to determine the
amount of Perkins SCA that is required when the
cooling system is initially filled.
Table 10
Equation For Adding The SCA To The Heavy-Duty
Coolant At The Initial Fill
V × 0.045 = X
V is the total volume of the cooling system.
X is the amount of SCA that is required.
Table 11 is an example for using the equation that
is in Table 10.
Table 11
Example Of The Equation For Adding The SCA To
The Heavy-Duty Coolant At The Initial Fill
Total Volume
Multiplication
of the Cooling
Factor
System (V)
15 L (4 US gal)
× 0.045
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.
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 12 to determine the
amount of Perkins SCA that is required, if necessary:
SEBU8455
Amount of
SCA that is
Required (X)
0.7 L (24 oz)

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