Hobart 120CU20, Руководство по эксплуатации и техническому обслуживанию с иллюстрированным списком запасных частей

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OM-2228 / Operation and Maintenance Manual
120CU20 / Series 500120 / 400 Hz. Generator Set
October 15, 2013 Chapter 1-1
Page 6
c) Engine-cooling fan
The engine fan is designed to blow air outward through the radiator, rather than pulling the air inward
as a conventional fan does.
d) Factory Installed Equipment
This generator set is modified at the factory by the addition of the following equipment:
(1) Shut Down/Reset device
In addition to the other devices provided by the engine manufacturer, the factory also added an
engine shutdown/reset feature.
a EMERGENCY SHUTDOWN/RESET SWITCH (S28)
The emergency shutdown switch has two purposes. One is to reset the starting circuit
following a failed starting sequence. The other is to provide instant manual shut off
of the
generator set by disconnecting power to the ECM through the control box. It is located on the
left side of the generator set near the control box (see Figure 1).
To operate the
EMERGENCY SHUTDOWN/RESET SWITCH :
•
Push the button in until engine stops or until button travel stops.
•
Pull the button back out to reset.
b Coolant high temperature shutdown system.
The coolant temperature shutdown system consists of a factory supplied temperature switch.
This switch is monitored by the microprocessor on the EIB (“Engine Interface Board”) PC
Board, which will stop the engine if the temperature reaches 230º F (110º C).
c Oil pressure shutdown system.
The oil pressure shutdown system consists of a factory supplied oil pressures switch. This
switch is monitored by the microprocessor on the EIB (“Engine Interface Board”) PC Board,
which will stop the engine if the oil pressure is under 12 PSI (82.7 kPA).
(2) Radiator and Charge-Air-Cooler (CAC).
The radiator and charge-air-cooler is a two-piece type designed for long periods of operation
without servicing. Refer to Section 2-1 for servicing procedure.
(3) Air Cleaner.
The diesel engine air cleaner is so constructed that air enters through its cylindrical body, and
then is filtered in the process before being passed onto the engine turbo-charger assembly. An
air cleaner service indicator device is mounted on the air cleaner assembly to monitor the airflow
into the air cleaner. As the air cleaner becomes filled with dust, dirt, and carbon, the intake
system airflow becomes increasingly restricted. This restriction causes a diaphragm inside the
indicator to move toward an electrical contact. When the maximum allowable restriction level is
reached, the circuit closes and the air cleaner indicator fault appears on the control panel fault
display to warn the operator that the air cleaner must be changed. The electrical indicator
automatically resets when the restriction level drops sufficiently.