Perkins 4006 TRS Gas Operation And Maintenance Manual page 47

SEBU8190-02
Table 20 is an example for using the equation that is
in Table 19 .
Table 20
Example Of The Equation For Adding The SCA To The Heavy-
Duty Coolant For Maintenance
Total Volume of the Multiplication
Factor
Cooling System (V)
15 L (4 US gal) × 0.023
Cleaning the System of Heavy-Duty
Antifreeze
Before SCA can be effective, the cooling system
must be free from rust, scale, and other deposits.
Preventive cleaning helps avoid downtime caused by
expensive out-of-service cleaning required for
extremely dirty and neglected cooling systems.
Suitable commercial Cooling System Cleaners,
should be able to:
• Dissolves or depresses mineral scales, corrosion
products, light oil contaminations, and sludges
• Cleans the cooling system after used coolant is
drained or before the cooling system is filled with
new coolant
• Cleans the cooling system whenever the coolant
is contaminated or whenever the coolant is
foaming
• Reduces downtime and cleaning costs
• Helps avoid costly repairs from pitting and other
internal problems caused by improper cooling
system maintenance
• Can be used with glycol-based antifreeze
• For the recommended service interval, refer to the
Operation and Maintenance Manual,
"Maintenance Interval Schedule" for your engine.
Standard Cooling System Cleaners are designed to
clean the cooling system of harmful scale and
corrosion without removing the engine from service.
Some commercial cooling system cleaners can be
Standard type and Quick Flush type, both types can
be used in all Perkins engine cooling systems.
Consult your Perkins distributor for further guidance.
Note: These cleaners must not be used in systems
that have been neglected or that have heavy scale
buildup. These systems require a stronger
commercial solvent that is available from local
distributors.
Prior to performing a cleaning of the cooling system,
take a 1.0 L (1.0 qt) sample of coolant from the
engine while in operation into a clear container. Take
the sample shortly after start-up while the coolant is
not yet hot. The coolant should be adequately mixed
by the water pump. Allow the sample to sit for 2
hours. If a visible oil layer is present, most
Amount of SCA
commercial cooling system cleaners or the Standard
that is Required
or Quick Flush type will be fully effective. First, drain
(X)
the coolant and then perform the procedure given
0.35 L (11.7 oz)
below (using nonfoaming dish detergent).
Procedure for Cleaning an Oil
Contaminated Cooling System
1. Drain the cooling system.
2. Fill the cooling system with acceptable water.
Note: Refer to the "Perkins Minimum Acceptable
Water Quality Requirements" in this "Operation and
Maintenance Manual" for more information.
3. Start the engine and run the engine until the
4. Add a non-foaming detergent containing
Note: Pre-dissolve the detergent in approximately
19 L (5.0 US gal) of acceptable quality water. Add
this mixture directly to the cooling system and top off
the cooling system with water.
5. Run the engine for at least 30 minutes. Stop the
6. Remove a small sample of the detergent solution
Note: Corrosion of the metal can occur if the
detergent solution is left in the cooling system for
longer than 1 hour.
7. Flush the cooling system, if there is no visible oil
8. Perform the cleaning procedure using a suitable
9. If further cleaning is not needed, refill the cooling
thermostat opens.
tripolypentasodium phosphate (TSP) to equal
approximately 2-3% cooling system capacity.
engine.
from the cooling system and then drain the cooling
system. Allow the sample solution to sit for at least
30 minutes and check for signs of a visible oil layer
on top. If oil is still present, repeat steps 2 to 6.
layer in the solution. Fill the cooling system with
acceptable quality water. Run the engine for 20
minutes and then drain the water.
commercial cooling system cleaner, if more
removal of scale, rust, and inhibitor deposits from
the previous coolant is needed.
system with new coolant.
47
Maintenance Section
Coolant Specifications