External Pushbuttons; Stop; Operation; General - Eaton FD120 Manual

O & M Manual IM05805019K-002
Effective April 2015

3.6 External Pushbuttons

3.6.1 Stop

The stop pushbutton will initiate the stopping sequence of the
fire pump engine only if no starting conditions are present.
Pressing the stop button will not change the mode the panel
was in when the button was pressed.

4. OPERATION

4.1 General

This section specifically describes the operation and functional
use of the Diesel Plus controller. The practical use of and
operation within each category will be discussed. In this
section, it is assumed that prior sections of this manual were
reviewed and that the operator has a basic understanding of
the hardware.

4.2 Start Sequence

In the Automatic Mode the Diesel Plus controller will
automatically start and stop the fire pump motor as dictated by
the features supplied and their programmed set-point values. A
summary of the controller intelligence and supervisory circuits
that constantly monitor the condition of the system pressure,
inputs, and system alarm points is provided.

4.2.1 Manual Start Sequence

Manual start is defined as a remote start. Whenever the engine
is running via a manual start, the motor needs to be manually
stopped via the stop pushbutton located on the enclosure
flange or by placing the controller in off mode.

4.2.2 Automatic Start Sequence

Automatic start is defined as a low-pressure pump start contact
closure, and Deluge Valve start condition. (Terminals 11 and 36)
Whenever the engine is running via an automatic start the
engine can be automatically stopped. In order for the controller
to automatically stop the engine automatic stopping must be
enabled, the RPT must be finished its timing cycle and no
starting conditions can exist. If the controller is programmed
for automatic shutdown, the motor needs to be manually
stopped via the local stop pushbutton located on the enclosure
flange or by placing the controller in the off mode.
OFF Mode
In the OFF position the controller will not attempt to start the
engine for any reason. Off mode also resets and silences all
alarms.
MANUAL Mode
This position allows the starting of the engines using the
manual crank buttons, Crank #1 and Crank #2, are located on
the enclosure flange. For added cranking capacity, both Crank
buttons can be depressed simultaneously.
The engine can be stopped by the "Local Stop" pushbutton or
by placing the controller in the OFF mode. The engine will
automatically stop in the case of an OVERSPEED condition.
All alarms, except for "FAIL TO START" , are active in the
MANUAL mode.
8 EATON INDUSTRIES CANADA COMPANY www.chfire.com
Diesel Engine Fire Pump Controller
Only depress Crank #1 or Crank #2 pushbuttons with controller in the
"MANUAL" mode.
Do not depress the crank pushbuttons in any other mode or while engine is
running. Doing so can result in serious damage to the engine.
AUTO Mode
A drop in pressure, "Remote Start" signal, "Pump Start" signal,
a signal from the "Deluge Valve" or Weekly Test Timer will
initiate the "attempt to start" cycle. This cycle consists of 6
crank periods of 15 seconds duration separated by 5 rest
periods of 15 seconds duration. Battery 1 and Battery 2 are
alternated for each crank cycle. In the event that one battery is
inoperative or missing, the controller will lock-in on the
remaining battery during the cranking sequence. Once the
engine is running, the controller will stop all further cranking.
STOP Modes
The Stop Mode is programmable for Auto Shutdown - On or Off
(see Appendix C). Note that the engine can be stopped in many
cases by pressing the local stop push button or at any time by
placing the controller in the OFF position or automatically in
case of an OVERSPEED condition.
Manual Stop Mode: The engine will continue to run until the
"Local Stop" pushbutton is depressed - providing all starting
causes have been eliminated.
Auto Shutdown: The engine will continue to run until the
running period timer (RPT) has timed out and all starting
causes have been eliminated.
Weekly Test Timer
Each Diesel Plus controller is equipped with a Weekly Test
Timer, to automatically exercise the engine in one week
intervals, based on the programmed setting. The controller
initiates the starting sequence by opening a drain valve
resulting in a simulated system pressure loss. The drain valve
is automatically closed once the controller receives a Low
Pressure signal. The engine will continue to run for the
programmed duration. "Weekly Test Started" will be saved into
the controller memory.
In order to protect the engine, during the Weekly Test sequence,
an OVERSPEED condition, LOW OIL PRESSURE or HIGH
ENGINE TEMP alarm will automatically shutdown the engine.
Engine Test Pushbutton
Pressing the Engine Test pushbutton initiates a starting
sequence by opening the drain valve resulting in a pressure
loss. The controller will start the engine in the automatic mode.
The TEST sequence can be terminated by putting the controller
in the OFF mode, otherwise the STOP mode prevails as
programmed.
All alarms are active in the test mode. In order to protect the
engine, in the test mode, an OVERSPEED condition, LOW OIL
PRESSURE or HIGH ENGINE TEMP alarm will automatically
shutdown the engine.
EATON Diesel Plus
CAUTION