Perkins 1204EA-E44TA Operation And Maintenance Manual page 71

M0135751
Containers of several sizes are available. Consult
your Perkins distributor for the part numbers.
ELC Cooling System Maintenance
Correct additions to the Extended Life
Coolant
NOTICE
Use only Perkins products for pre-mixed coolants.
Mixing Extended Life Coolant with other products re-
duces the Extended Life Coolant service life. Failure
to follow the recommendations can reduce cooling
system components life unless appropriate corrective
action is performed.
To maintain the correct balance between the
antifreeze and the additives, you must maintain the
recommended concentration of ELC. Lowering the
proportion of antifreeze lowers the proportion of
additive. Lowering the ability of the coolant to protect
the system will form pitting, from cavitation, from
erosion, and from deposits.
NOTICE
Do not use a conventional coolant to top-off a cooling
system that is filled with Extended Life Coolant
(ELC).
Do not use supplemental coolant additive (SCA).
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 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
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. Fill the cooling system with a 33 percent solution of
Perkins ELC and operate the engine, ensure that
the thermostat opens. Stop the engine and allow
the engine to cool. Drain the coolant.
Note: Use distilled or deionized water in the solution.
4. Again, fill the cooling system with a 33 percent
solution of Perkins ELC and operate the engine
ensure that the thermostat opens. Stop the engine
and allow to cool.
5. Drain the cooling system.
NOTICE
Incorrect or incomplete flushing of the cooling system
can result in damage to copper and other metal
components.
NOTICE
Most commercial cooling system cleaning agents are
corrosive and their use is not recommended by
Perkins.
6. Fill the cooling system with the Perkins Premixed
ELC. Operate the engine. Ensure that all coolant
valves open then stop the engine. When cool
check the coolant level.
ELC Cooling System Contamination
NOTICE
Mixing ELC with other products reduces the effective-
ness of the ELC and shortens the ELC service life.
Failure to follow these recommendations 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:
71
Maintenance Section
Fluid Recommendations