SEBU8603-01 65
Maintenance Section
Refill Capacities
ELC Cooling S ys
tem Cleaning
Note: If the cooling system is already using ELC,
cleaning agen
ts are not required to be used at
the specified coolant change interval. Cleaning
agents are only required if the system has been
contaminate
d by the addition of some other type of
coolant or by cooling system damage.
Clean water
is the only cleaning agent that is required
when ELC is drained from the cooling system.
Before the c
ooling system is filled, the heater control
(if equipped) must be set to the hot position. Refer
to the OEM in order to set the heater control. After
the coolin
g system is drained and the cooling system
is refilled, operate the engine until the coolant level
reaches the normal operating temperature and
until the c
oolant level stabilizes. As needed, add
thecoolantmixtureinordertofi ll the system to the
specified level.
Changing to Perkins ELC
To c hang
efromheavy-dutyantifreezetothePerkins
ELC, perform the following steps:
NOTICE
Care mu
st be taken to ensure that all fluids are
contained during performance of inspection, main-
tenance, testing, adjusting and the repair of the
produc
t. Be prepared to collect the fluidwithsuitable
containers before opening any compartment or dis-
assembling any component containing fluids.
Dispose of all fluids according to local regulations and
mandates.
1. Drai
n the coolant into a suitable container.
2. Dispose of the coolant according to local
regu
lations.
3. Flush the system with clean water in order to
rem
ove any debris.
4. Use an appropriate cleaner to clean the system.
Fol
low the instruction on the label.
5. Drain the cleaner into a suitable container. Flush
th
e cooling system with clean water.
6. Fill the cooling system with clean water and
op
erate the engine until the engine is warmed to
49° to 66°C (120° to 150°F).
NOTICE
Incorrect or i
ncomplete flushing of the cooling system
can result in damage to copper and other metal com-
ponents.
To avoid damage to the cooling system, make sure to
completely flush the cooling system with clear water.
Continue to fl
ush the system until all the signs of the
cleaning agent are gone.
7. Drain the co
oling system into a suitable container
and flushthecoolingsystemwithcleanwater.
Note: The c
ooling system cleaner must be thoroughly
flushed from the cooling system. Cooling system
cleaner that is left in the system will contaminate the
coolant. T
he cleaner may also corrode the cooling
system.
8. Repeat St
eps 6 and repeat steps 7 until the
system is completely clean.
9. Fill the
coolingsystemwiththePerkinsPremixed
ELC.
ELC Cool
ing 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 H eavy-Duty
Coolant. Treat the system with an SCA. Change
the coolant at the interval that is recommended for
the conventional Heavy-Duty Coolant.
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