SEBU8603-01
65
Maintenance Section
Re
fi
ll Capacities
ELC Cooling System Cleaning
Note:
If the cooling system is already using ELC,
cleaning agents are not required to be used at
the speci
fi
ed coolant change interval. Cleaning
agents are only required if the system has been
contaminated 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 cooling system is
fi
lled, 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 cooling system is drained and the cooling system
is re
fi
lled, 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
fi
ll the system to the
speci
fi
ed 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
fl
uids are
contained during performance of inspection, main-
tenance, testing, adjusting and the repair of the
product. Be prepared to collect the
fl
uid with suitable
containers before opening any compartment or dis-
assembling any component containing
fl
uids.
Dispose of all
fl
uids according to local regulations and
mandates.
1.
Drain the coolant into a suitable container.
2.
Dispose of the coolant according to local
regulations.
3.
Flush the system with clean water in order to
remove any debris.
4.
Use an appropriate cleaner to clean the system.
Follow the instruction on the label.
5.
Drain the cleaner into a suitable container. Flush
the cooling system with clean water.
6.
Fill 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 incomplete
fl
ushing 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
fl
ush 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 cooling system into a suitable container
and
fl
ush the cooling system with clean water.
Note:
The cooling system cleaner must be thoroughly
fl
ushed from the cooling system. Cooling system
cleaner that is left in the system will contaminate the
coolant. The cleaner may also corrode the cooling
system.
8.
Repeat Steps 6 and repeat steps 7 until the
system is completely clean.
9.
Fill the cooling system with the Perkins Premixed
ELC.
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,
fi
ll 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.