GENERAL INTRODUCTION
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CX EXCAVATORS
EXPLANATION OF CX SERIES
Electrical System
To improve starting at cold temperatures the CX130 and CX160 are equipped with an ether
injection system as standard equipment. The ether injection system can only be activated
when the key-switch is in the crank position. There is a rocker switch located in the left-hand
control console for easy access to the operator. There is also a temperature switch located
on the engine intake manifold to prevent engagement of the ether system when the engine is
above approximately 40°F . On the CX210 and CX240, an intake manifold heater is used for
cold starting assist.
The Alternator is rated at 24 volts. The electronic controller for the CX130/CX160 machine
requires an engine speed signal from a magnetic sensor on the flywheel. This engine speed
signal is extremely critical to machine functions. The CX210/CX240 machines have
electronic control engines. The machine controller requires input from the engine controller.
The engine, the hydraulic, and the electrical systems are all monitored by a controller. The
controller for the CX130/CX160 is different than for the CX210/CX240. The controller
receives signals from sending units. Very simply, the controller takes the information that it
has received, and then sends the required outputs to cause the machine to perform as
selected. These outputs may be sent to the display panel to indicate a malfunction or to give
a visual display of which performance features have been selected. The outputs may also be
sent to the solenoid valves, which control the machine functions. The controller has an
automatic “limp home” feature to allow the machine to be operated to complete the job in
case of controller failure.
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