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DCA-125SSJU SERIES (STANDARD)— PARTS AND OPERATION MANUAL— REV. #4 (06/03/03) — PAGE 27
DCA-125SSJU SERIES — ENGINE OPERATING PANEL
The definitions below describe the controls and functions of
the DCA-125SSJU2 "
Engine Operating Panel
" (Figure 7)
from S/N 7500508 ~.
1. Panel Light – Normally used in dark areas or at night
time. When activated, panel lights will illuminate. When
the generator is not in use be sure to turn the panel
light switch to the OFF position.
2. Panel Light Switch – When activated will turn on control
panel light.
3. Oil Pressure Gauge – During normal operation this
gauge be should read between 42 to 71 psi. When
starting the generator the oil pressure mar read a little
bit higher, but after the engine warms up the oil pressure
should return to the green zone.
4. Water Temperature Gauge – During normal operation
this gauge be should read between 165
o
and 203
o
F.
5. Charging Ammeter Gauge – Indicates the current
being supplied by the engine’s alternator which provides
current for generator’s control circuits and battery
charging system.
6. Fuel Gauge - Indicates amount of diesel fuel available.
7. Tachometer – Indicates engine speed in RPM’s for 60
Hz operation. This meter should indicate 1800 RPM’s
when the rated load is applied. In addition a built in hour
meter will record the number of operational hours that
the generator has been in use.
8. Engine Speed Switch - This switch controls the speed
of the engine (low or high).
9. Cold Starting Button – Used to
warm the engine glow plugs in cold
weather conditions. Press and hold
the engine cold starting button until
the button illuminates.
A. Off/Manual/Auto Switch – This switch controls the
running of the generator. If this switch is left in the "OFF"
position, the generator will not run. When this switch is
set to the
manual
position, the generator will start
immediately.
If the generator is to be connected to a building's AC
power source via a transfer switch (isolation), place
the switch in the
auto
position. In this position the
generator will monitor the AC line output from the
building's power source.
B. Low Oil Pressure – Indicates the engine pressure
has fallen below 15 psi. The oil pressure is detected
using variable resistive values from the oil pressure
sending unit. This is considered a
major
fault.
C. High Coolant Temperature – Indicates the engine
temperature has exceeded 215
°
F. The engine
temperature is detected using variable resistive values
from the temperature sending unit. This is considered
a
major
fault.
D. Overcrank Shutdown – Indicates the unit has
attempted to start a pre- programmed number of times,
and has failed to start. The number of cycles and
duration are programmable. It is pre-set at 3 cycles
with a 10 second duration. This is considered a
major
fault.
E. Overspeed Shutdown – Indicates the engine is
running at an unsafe speed. This is considered a
major
fault.
F. Engine Running – Indicates that engine is running
at a safe operating speed.
10. Auto On/Off Engine
Controller – This controller
has a vertical row of status
LED's (inset), that when lit,
indicate that an engine
malfunction (fault), has been
detected. When a fault has
been detected the engine
controller will evaluate the fault.
Any
major
fault will cause the
controller to shutdown the
generator.
During
cranking cycle
, The MPEC will attempt to crank the
engine for 10 seconds before disengaging. If the engine
does not engage (start) by the third attempt, the engine will
be shutdown by the engine controller’s " Over Crank
Protection" mode. If the engine engages at a speed (RPM's)
that is not safe, the controller will shutdown the engine by
initializing the "
Over Speed Protection
" mode.
Also the engine controller will shutdown the generator in the
event of low oil pressure, high coolant temperature, low
coolant level, and loss of magnetic pickup. These conditions
can be observed by monitoring the LED status indicators on
the front of the controller module.