Elc Cooling System Cleaning - Perkins 1106A-70T Operation And Maintenance Manual

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Refill Capacities
Fluid Recommendations

ELC Cooling System Cleaning

Note: If the cooling system is already using ELC,
cleaning agents are not required to be used at the
specified 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 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
cooling system is drained and the cooling system is
refilled, 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 fill 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 con-
tained during performance of inspection, mainte-
nance, testing, adjusting and the repair of the
product. Be prepared to collect the fluid with suitable
containers before opening any compartment or disas-
sembling any component containing fluids.
Dispose of all fluids 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 Perkins 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 flushing of the cooling system
can result in damage to copper and other metal
components.
To avoid damage to the cooling system, make sure to
completely flush the cooling system with clear water.
Continue to flush the system until all the signs of the
cleaning agent are gone.
7. Drain the cooling system into a suitable container
and flush the cooling system with clean water.
Note: The cooling system cleaner must be thoroughly
flushed 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
component 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.
SEBU8728