Page 96 - ingenioren

Coolant Filtration
COOLANT FILTRATION Coolant Filters Coolant Spin-on
Filter & Design Features

Design Features
Coolant system filters are typically partial-flow
The Donaldson spin-on coolant filter has three
(by-pass) filters, with less than 10% of the coolant
heavy-duty features: a thread-plate profile for
flow circulating through the filter at any given time.
strength, rolled threads which are cleaner, and
Donaldson coolant filter offering allows you to the robust full tuck seam for extra durability.
choose the method that suits your maintenance The Donaldson tapered thread profile simplifies
practices and schedules. installation and prevents cross threading.

Donaldson coolant filters are designed to work in a Not all filters have an inner seal between the
wide variety of operating environments and meet the thread plate and end plate. Donaldson’s seal
service requirements of the majority of heavy-duty is constructed of molded elastomer which is
diesel engines. designed for extreme cold and heat.

Use of the correct filter is important to maintain
the proper balance in the system to prevent Nitrile Gasket
over concentration (silicate drop out) or under • Precision cut
concentration which leads to corrosion, liner pitting
or other system problems. Baffle plate
• Tapered lead-in threads
• Full tuck seam
There are four types of Donaldson coolant additive
filter types available.

The pre-charge filter which contains enough coolant Inner Seal
additive to initially charge the cooling system and to • Molded elastomer
allow for depletion to the first service interval.
Inner Element
The standard charge spin-on filters which contain • Spiral-wound louvered
adequate chemical additive to maintain cooling design center tube
systems between service intervals. • Flat cured media with
uniform pleat spacing
Blank filters which contain no chemical additive
and can be used for the following systems, cooling
systems maintained by liquid additive, systems using Pre-Charge Chemical
long life coolants which require no additive, or on • Dry chemical pellets
charged with SCA or SCA+
overcharged systems to bring the additive level back • Units vary by part number,
to a normal range. Blank filters are not intended to be some filters have no pre-
used with water-only systems. charge chemical

The fourth type is Donaldson Endurance Plus time Coil Spring
release spin-on series which release small amounts • Tucked coil end
of additive into the system over a period of time to
maintain proper additive levels.

Housing
• Heavy-duty, tin-coated
• Increased material
thickness

94 • Engine Liquid Filtration www.donaldson.com