Cummins Fire Pump Drive Engine CFP23E Radiator-cooled
Doc. A042J397, Rev. 01/2018
2-6
Description
2.3.12 Automatic or Manual Mode of Operation
Selector Switch and Indicator Lamps
The AUTO/MAN selector switch and indicator lamps
(14) illuminate in yellow, indicating the operational
state of the FPDP.
The MAN selector switch (for manual operation) is
only to be selected for engine setup, testing, and
emergency and maintenance procedures. When the
FPDP is in manual mode, the ECM keyswitch/FSO
and raw water solenoids are always activated, except
under an overspeed condition.
The AUTO selector switch (for automatic operation) is
the normal state of the FPDP, in which the fire pump
controller starts and stops the engine. In automatic
mode, the fire pump drive engine shuts down or
enters engine cool down upon loss of a signal from
the fire pump controller.
2.3.13 MENU Soft Key
The MENU soft key (15) on the FPDP display allows
the user to open the menu options. A complete list of
FPDP screens and their functionality is outlined in the
Operation Section of this manual.
2.3.14 Hour Meter
The Hour Meter (16) maintains a running total of the
hours of engine operation (run time).
2.3.15 Engine Oil Pressure Gauge
Based on user parameter screen display selection,
the Engine Oil Pressure Gauge (17) displays the
engine oil pressure in pounds per square inch (PSI)
or kPa. The Engine Oil Pressure Gauge displays by
default in three different colors:
• green - when the engine oil pressure is greater
than 25 PSI (172 kPa);
• yellow - when the engine oil pressure is between
17 PSI (117 kPa) and 25 PSI (172 kPa); and
• red - when the engine oil pressure is below 16
PSI (110 kPa). NOTE: Engine oil pressure dis-
played in red will also be accompanied by a low
oil pressure fault. Refer to TB-4.
2.3.16 Coolant Temperature Gauge
Based on user parameter screen display selection,
the Coolant Temperature Gauge (18) displays the
engine coolant temperature in degrees Fahrenheit or
degrees Celsius. The Coolant Temperature Gauge
displays in three different colors:
• green - when the coolant temperature is
between 100-199 °F (38-93 °C);
• yellow - when the coolant temperature is
between 200-211 °F (93-100 °C) OR below 100
°F (38 °C). NOTE: when the coolant temperature
is below 100 °F (38 °C), the yellow gauge will
also be accompanied by a low coolant tempera-
ture fault. Refer to TB-312.; and
• red - when the coolant temperature is greater
than 212 °F (100 °C). NOTE: the red gauge will
also be accompanied by a high coolant tempera-
ture fault. Refer to TB-5.
2.4 FPDP Informational Displays
2.4.1 Fault Code Warning Displays
Fault codes diagnosed by the ECM are displayed in a
yellow or red International Organization for Standard-
ization (ISO) symbol and/or overlay box which lies
atop the tachometer signal (the engine speed is still
digitally displayed) to alert the operator to service the
engine as soon as possible. Only the first seven
active ECM faults will be displayed in the overlay.
NOTE: To remove the overlay box from atop the
tachometer, press the SCREEN Soft Key.
2.4.1.1 Yellow Warning Indicators
The yellow ISO symbol (shown in Figure 2-4) or the
yellow ISO symbol AND a large yellow box covering
the tachometer (shown in Figure 2-5) indicate an
engine malfunction that requires timely operator
attention.
F i gu re 2- 4 Ye l lo w Wa r n in g I n di ca to r
ISO Symbol Only