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DCA-220SSJ— OPERATION AND PARTS MANUAL — REV. #1 (03/22/07) — PAGE 39
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DCA-220SSJ — ENGINE OPERATING PANEL
8. Engine Speed Switch – This switch controls the speed
of the engine (low/high).
9. Pre-Heat Lamp – When lit, indicates engine is in the
pre-heating mode (for starting during cold weather
operating conditiions). When lamp goes off engine is
ready for starting.
10. Warning Lamp – This lamp will illuminate when a critical
engine fault has occured.
11. Emergency Stop Lamp – This lamp will illuminate when
the emergency stop button has been pressed or a critical
engine fault has occured.
12. Emergency Stop Button – In the event of an
emergency, press this button to shutdown the generator.
13. Diagnostic Display – This display monitors crtical
engine functions. If any abnormal conditions occur, an
Active Fault Code will be displayed. This diagnostic
display can be located inside the control box.
A. MPEC Control Switch – This switch controls the
running of the unit. If this switch is set to the
OFF/RESET position, the unit 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 an automatic transfer switch
(isolation), place the switch in the AUTO position. In
this position, should an outage occur, the automatic
transfer switch (ATS) will start the generator
automatically via the generator’s auto-start contacts
connected to the ATS’s start contacts. Please refer to
your ATS installation manual for further instructions for
the correct installation of the auto-start contacts of the
generator to the ATS.
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 239
°
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.
Also the engine controller will shut down the engine 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.
14. Auto On/Off Engine Controller (MPEC) –
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
and all major faults will 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.