Operation and maintenance manual

74 SEBU8601-01
Maintenance Section
Refill Capacities
•
ASTM____ _____
_________________________________
American
Society for Testing and Materials
The following
two coolants are used in Perkins diesel
engines:
Preferred – P
erkins ELC
Acceptable – A commercial heavy-duty antifreeze
that meets “
ASTM D6210 ” specifications
NOTICE
The 1200 series industrial engines must be oper-
ated with a 1:1 mixture of water and glycol. This
concentration allows the NOx reduction sys tem to
operate correctly at high ambient temperatures.
NOTICE
Do not use a commercial coolant/antifreeze that on-
ly meets
the ASTM D3306 specification. This type of
coolant/antifreeze is made for light automotive appli-
cations.
Perkin
s recommends a 1:1 mixture of water and
glycol. This mixture of water and glycol will provide
optimum heavy-duty performance as an antifreeze.
This ra
tiomaybeincreasedto1:2watertoglycolif
extra freezing protection is required.
Amixt
ure of SCA inhibitor and water is acceptable but
will not give the same level of corrosion, boiling and,
freezing protection as ELC. Perkins recommends a 6
perce
nt to 8 percent concentration of SCA in those
cooling systems. Distilled water or deionized water
is preferred. Water which has the recommended
prop
erties may be used
Table 12
Coolant Service Life
Coolant Type Service Life
(1)
Perkins ELC
6,000 Service Hours or
Three Years
Co
mmercial Heavy-Duty
Antifreeze that meets
“ASTM D6210”
3000 Service Hours or
On
eYear
Commercial Heavy-Duty
Antifreeze that meets
“ASTM D6210”
3000 Service Hours or
Two Y ears
Perkins POWERPART
SCA inhibitor
3000 Service Hours or
Two Y ears
Commercial SCA i nhibitor
and Water
3000 Service Hours or
One Year
(1)
Use the interval that occurs first. The cooling sy stem mu st
also be flushed out at this time.
ELC
Perkins provides ELC for use in the following
applications
:
•
Heavy-duty spark ignited gas engines
•
Heavy-duty diesel engines
•
Automotive
applications
The anti-corrosion package for ELC is different from
the anti-co
rrosion package for other coolants. ELC
is an ethylene glycol base coolant. However, ELC
contains organic corrosion inhibitors and antifoam
agents wit
h low amounts of nitrite. Perkins ELC
has been formulated with the correct amount of
these additives in order to provide superior corrosion
protectio
n for all metals in engine cooling systems.
ELC is available in a premixed cooling solution with
distille
d water. ELC is a 1:1 mixture. The Premixed
ELC provides freeze protection to −36 °C (−33 °F).
The Premixed ELC is recommended for the initial
fill of the
cooling system. The Premixed ELC is also
recommended for topping off the cooling system.
Contain
ers of several sizes are available. Consult
your Perkins distributor for the part numbers.
ELC Cooling System Maintenance
Correc
t additions to the Extended Life
Coolant
NOTICE
Use only Perkins products for pre-mixed or concen-
trated coolants.
Mixing Extended Life Coolant with other products re-
duces the Extended Life Coolant service life. Failure to
follow the recommendations can reduce cooling sys-
tem components life unless appropriate corrective ac-
tion is performed.
In order 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. This will lower the ability of the coolant to
pr
otect the system from pitting, from cavitation, from
erosion, and from deposits.