Page 4
IM05805016K
Effective October 2007
5.6 TEST Mode
Placing the controller in the TEST position 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.
5.7 Run Period Timer
The Run Period Timer (RPT) performs the
automatic stopping function in a Fire Pump
Controller after a start initiated by the pressure
transmitter during automatic operation.
The purpose of the RPT is to ensure that the engine
is not subjected to frequent starts in response to the
pressure. Refer to Section 6 for programming of
the RPT.
5.8 Sequential Start Timer
The Sequential Start Timer is standard in all diesel
fire pump controllers.
“The controller for each unit of multiple pump
units operating in parallel shall incorporate a
sequential timing device to prevent any one motor
from starting simultaneously with any other motor.
If water requirements call for more than one
pumping unit to operate, the units shall start at
intervals of 5 to 10 seconds. Failure of a leading
motor to start shall not prevent subsequent
pumping units from starting” – NFPA, Pamphlet
20, Chapter 7.
The sequential start timer (SST) delays the starting
of a fire pump in response to the pressure switch.
It does not delay a pushbutton or emergency handle
start.
With a SST in each controller, any pump may be
selected as the lead pump by appropriate setting of
the timers. If the lead pump restores the pressure in
less than the time delays applied to the lag pumps,
then the lag pumps will not start.
In addition, the provision of a sequential start
timer, set to a few seconds delay, will prevent the
lead pump controller from responding to
momentary hydraulic transient pressure loss which
would otherwise start the fire pump unnecessarily.
The SST can be programmed from 0 – 300
seconds. Typically, each pump should be delayed
by 10 seconds from the pump ahead of it. If
hydraulic transients are a problem, all timers can
be adjusted for a few seconds extra time delay.
6.
Programming of the Main
Controller
The LCD display will prompt the programmer with
data and allow the operator to modify the program
using a combination of the
MENU
key and three
function keys;
F1, F2
and
F3.
The displayed
parameter value indicates the present setting of the
controller. Located above the F1, F2 & F3 keys are
designated symbols and/or words describing their
function. The function keys are used to increase,
decrease or accept preset values.
6.1
To Program The Controller
Place the controller in the ‘
OFF
’ mode and depress
the
MENU
key, followed by the
F3
key. Figure #2
illustrates the sequence in which the operator is
prompted for each parameter. To move to the next
parameter, press the MENU key. Note that moving
from one parameter to the next does not affect the
value of the parameter currently displayed.
F1 and F2 are used to change the value while F3 is
used to enter the value into memory or accept the
present value and proceed to the next parameter.
For example, if the parameter displayed is
“CHANGE DATE”, press the MENU key three (3)
times to access the “RUN PERIOD TIMER”
parameter and press F3 to change the time. F1
increases the count, F2 decreases the count and F3
enters the selected value into memory and proceeds
to the next parameter.
PROGRAMMABLE RANGES
Run Period Timer:
1-60 mins
Pressure (Start/Stop):
1-500 PSI
Pressure Deviation:
1-100 PSI
AC Failure Delay:
0-300 sec
Sequential Start Timer:
0-300 sec
Low Suction Shutdown
YES or NO
6.2 Program Descriptions
Refer to Appendix A attached .
>>
The controller is programmable
in the ‘OFF’ mode only
<<
While programming, a Function key or the
MENU key must be depressed within a 60 second
time period, otherwise the controller will return
to the initial prompt.
