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TP-6880 2/21 13Section 1 Descriptions and Service Views
Section 1 Descriptions and Service Views
1.1 Introduction
The generator set specification sheets provide specific
generator and engine information. Refer to the spec
sheet for data not supplied in this manual. Consult the
generator set service manual, engine operation manual,
and engine service manual for additional specifications.
Obtain copies of the latest spec sheets, manuals,
diagrams, and drawings from your local distributor/
dealer.
1.2 Engine
The 8RESV generator set has a four-cycle, single
cylinder, air-cooled Kohler engine and 10/12RESV
generator sets have a four-cycle, twin cylinder,
air-cooled Kohler engine. The engines operate on
clean-burning natural gas or LPG. Engine features
include:
Efficient overhead valve design and full pressure
lubrication for maximum power, torque, and reliability
under all operating conditions.
Dependable, maintenance-free electronic ignition.
Precision-formulated cast iron construction of parts
subjected to the most wear and tear.
Field-convertible multi-fuel systems that allow fuel
changeover from natural gas to LPG (and vice- versa)
while maintaining EPA emission certification.
1.3 Generator Set Enclosure
The generator set is housed in a steel enclosure which is
dipped in e-coat for extra corrosion protection and
painted with a durable powder coat finish. The
enclosure has a hinged, locking roof that allows easy
access to the generator set controller when required,
but locks securely to prevent unauthorized access.
To open the roof, insert the key provided with the
enclosure and turn counterclockwise 1/4 turn. Then just
raise the roof. The roof stays open until you are ready to
close it.
Be sure to close and lock the enclosure, and keep the
key in a secure location.
1.4 Alternator
The generator uses Kohler’s unique PowerBoost
voltage regulation system, which provides instant
response to load changes.
PowerBoost ensures reliable motor starting and
consistent voltage levels. PowerBoost utilizes a
voltage excitation system that employs a winding
independent of the main output windings to provide
excitation voltage.
1.5 Transfer Switch
The RDC2 controller is designed to interface with and
control the Kohler Model RXT Automatic Transfer
Switch (ATS). Do not use the Kohler Model RRT transfer
switch with the RDC2 controller.
If the power system uses a different model transfer
switch, the RDC2 controllers will not control the transfer
switch. An ATS other than the Model RXT must be
equipped with a transfer switch controller and engine
start contacts that connect to the remote engine start
terminals on the generator set.
1.6 Controllers
The generator sets are equipped with the RDC2
controller. See Figure 1-1.
The controller provides integrated control for the
generator set, Kohler Model RXT transfer switch,
programmable interface module (PIM), and load
management device.
Note: Load management devices are not available with
the transfer switch supplied with models
8RESVL, 10 RESVL, 12 RESVL.
The controller’s 2-line LCD screen displays status
messages and system settings that are clear and easy
to read, even in direct sunlight or low light.
RDC2
Figure 1-1 Generator Set Controller
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