40 SEBU8325-01
Maintenance Section
Refill Capacities
ELC Cooling Sys
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.
After the co
oling system is drained and after the
cooling system is refilled, operate the engine while
the cooling system filler cap is removed. Operate
the engine
until the coolant level reaches the normal
operating temperature and until the coolant level
stabilizes. As needed, add the coolant mixture in
order to fil
l the system to the specified level.
Changing to Perkins ELC
To change from heavy-duty antifreeze to the Perkins
ELC, perform the following steps:
NOTICE
Care must be taken to ensure that all fluids are
contained during performance of inspection, main-
tenanc
e, testing, adjusting and the repair of the
product. Be prepared to collect the fluidwithsuitable
containers before opening any compartment or dis-
assemb
ling any component containing fluids.
Dispose of all fluids according to local regulations and
manda
tes.
1. Drain the coolant into a suitable container.
2. Disp
ose of the coolant according to local
regulations.
3. Flus
h the system with clean water in order to
remove any debris.
4. Use
Perkins cleaner to clean the system. Follow
the instruction on the label.
5. Dra
in the cleaner into a suitable container. Flush
the cooling system with clean water.
6. Fi
ll the cooling system with clean water and
operate 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
eps6and7untilthesystemis
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 ten percent of conventional heavy-duty
antifreeze or SCA. If the contamination exceeds ten
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 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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