Specifications
Limited Service Controllers
The main fire pump controller shall be a
factory assembled, wired and tested Limited
Service Controller conforming to all the requirements of the latest edition of NFPA 20,
Centrifugal Fire Pumps and NFPA 70, National Electrical Code.
The controller shall be manufactured in the
United States and be listed by Underwriters’
Laboratories, Inc., in accordance with UL218,
Standard for Fire Pump Controllers, CSA,
Standard for Industrial Control Equipment
(cUL), approved by Factory Mutual, and approved by the City of New York for fire pump
service.
The controller shall be of the combined
manual and automatic type suitable for full
voltage starting of the fire pump motor having
the horsepower, voltage, phase and frequency
rating shown on the plans and drawings.
The controller shall be housed in a NEMA
Type 2 (IEC IP11) drip-proof, gasketed, wall
mounted steel enclosure.
The controller components shall include a
thermal magnetic circuit breaker with a minimum withstand rating of not less than:
3-20 H.P. — 200-240 Volts —
10,000 Amps RMS Symmetrical
25-30 H.P. — 200-240 Volts —
18,000 Amps RMS Symmetrical
3-30 H.P. — 380-600 Volts —
14,000 Amps RMS Symmetrical
If the available fault current of the system
exceeds these ratings, the controllers shall be
supplied with a withstand rating as shown below:
Horsepower
3-30
3-30
Voltage Withstand Rating
Amps RMS Sym.
200-480
65,000
550-600
18,000
The circuit breaker shall have an externally
mounted operating handle mechanically interlocked with the enclosure door so that entrance
• FTA750
to the controller is not allowed with the handle
in the ON position except by a hidden tool
operated defeater. The circuit breaker handle
shall be capable of being padlocked in the
open or OFF position with up to three padlocks for installation and maintenance safety.
The circuit breaker handle shall be in full control of the circuit breaker. The controller door
shall have a locking type handle.
The controller shall have externally
mounted, on the enclosure flange, POWER ON
and PHASE REVERSAL pilot lights, START
and STOP pushbuttons and an EMERGENCY
RUN mechanism. The START pushbutton and
EMERGENCY RUN mechanism shall be
separate units and not combined.
The POWER ON pilot light shall be wired
through contacts on the phase monitor to give
true power on indication. Loss of power in
any phase or loss of the control circuit transformer shall cause the light to go out. The
PHASE REVERSAL pilot light shall be wired
through contacts on the phase monitor to give
true indication of incorrect phase angle relationships.
The controller shall be supplied with a pressure switch having a range of 0-300 psi (0-21
kg/cm2) and with independent high and low
pressure settings. The pressure switch shall
be mounted inside the controller to prevent
unauthorized adjustment and/or accidental
damage. The pressure switch shall be directly
pipe mounted to a solidly welded bulkhead
pipe coupling without any other supporting
members and field connections shall be made
externally at the controller coupling to prevent
distortion of the pressure switch element and
mechanism. The adjustment knobs shall be
capable of being sealed after final adjustment.
The controller shall have a minimum run
period timer set for ten minutes. The minimum run timer shall include an integral timer
running pilot light to indicate when the run timer
FTA750
Specifications
• Limited Service Controllers
is in the timing mode. Terminals shall be provided to field convert the controller from automatic to manual shutdown. Terminals shall be
provided so that standard duty rated, normally
open pushbutton stations can be wired to the
controller. Terminals shall be provided so that
a remote deluge valve contact may be wired
to the controller to start the unit. The controller
shall be supplied with interlock and shutdown
circuits as standard.
Individual PHASE FAILURE, PHASE REVERSAL and PUMP OPERATING alarm contacts shall be wired to terminals. These contacts shall be both normally open and normally
closed and be electrically isolated for wiring
to either remote alarm panels as supplied by
the controller manufacturer, or for use with remote telephone dropout type alarm systems.
A factory built in alarm shall be provided in
the fire pump controller, requiring only 120 Volt
supervisory power. This alarm shall give an
audible alarm for PUMP OPERATING,
PHASE FAILURE, or PUMP FAILURE and a
visual alarm for SUPERVISORY VOLTAGE
AVAILABLE. This alarm shall be electrically
isolated from the remote alarm contacts so
that 24 VDC or separate 120 VAC remote
alarms can be utilized. All alarm contacts shall
be rated 125 VAC maximum 10 amperes pilot duty. They shall also be suitable for direct
switching of low energy alarm circuits — 6
VDC minimum, 10 MA, 0.6 VA minimum.
The control circuit transformer shall be of
the molded winding construction type with built
in molded terminals and shall be fuse protected from external loads. The fuse shall be
installed on the transformer.
The manufacturer shall test the entire controller assembly prior to shipment. This test
shall include, but no be restricted to, each function the controller may be required to perform
including remote alarms, remote start, automatic start with manual shutdown, automatic
stop, remote deluge valve start, pressure drop
start and manual start-stop.
The manufacturer shall perform a high potential test of the controller power circuits at
not less than two times the rated voltage plus
1000 volts.
The controller shall be manufactured by
Firetrol, Inc.
(919) 460-5200 • www.firetrol.com • Sales Office: Cary, NC 27512 USA
SP750-01(H)