2
Installation and electrical connections
EPCT FirE sEriEs FirE PumP ConTrollEr
MN124016EN August 2019 www.eaton.com
2.0 Installation and electrical connections
2.1 Mounting
Carefully unpack the controller and inspect thoroughly.
The controller should be located as close as is practical to
the motor it controls and shall be within sight of the electric
motor, preferably ten feet or less.
The EPCT controller is designed for either wall or floor
mounting; use Grade 5 bolts. Note that the controller is
not free standing and must be mounted with feet or bolted
securely to a wall. For dimensional and weight data please
refer to the respective data sheets for the various types of
Fire Pump Controllers.
2.2 Pressure switch connections
NOTICE
Water lines to the pressure switch must be free from dirt
and contamination
The EPCT is equipped with a pressure sensor. The controller
is provided with a 1/2” NPT female system pressure
connection located on the bottom, external side of the
enclosure. The connection should be installed as per NFPA,
pamphlet no. 20.
The actual pressure is displayed on the main display. Precise
start and stop pressure set points can be programmed in the
controller. Refer to Section 5 for programming instructions.
The maximum operating pressure of the pressure sensor
and internal plumbing components is listed on the
controller nameplate.
2.3 Electrical connections
NOTICE
All conduit connections to the controller are recommended
to be installed on the bottom of the controller. Refer to the
assoicated dimensional drawing for reference. Drilling or
installing conduit above the microprocessor boards may
void warranty.
All electrical connections should meet national and local
electrical codes and standards.
The controller should be located or so protected that it will
not be damaged by water escaping from pumps or pump
connections. Current carrying parts of controllers shall be a
minimum of 12 inches (305mm) above the floor.
Prior to starting, verify all data on the nameplate such as:
catalog number, AC line voltage, horsepower, and frequency.
Inspect all electrical connections, components, and wiring
for any visible damage. Correct as necessary. Ensure that all
electrical connections are tightened before energizing.
Refer to the wiring schematic affixed to the enclosure door
for all wiring information pertaining to the incoming AC
power supply and motor wiring.
Install necessary conduit using proper methods and tools.
Recommend entry point is on the bottom of the enclosure.
Incoming AC line voltage is clearly marked L1, L2, L3, and
ground, located at the top of the enclosure.
2.3.1 Wire sizes
For control wiring, use #14 AWG wire for all electrical
connections.
For power wiring sizes refer to Appendix Q.
2.3.2 Electrical checkout instructions
The EPCT controller is designed to be phase sensitive. L1,
L2 & L3 should be connected to A, B & C respectively.
Energize the controller by closing the isolation switch
(MIS) and circuit breaker (CB). If the phases are connected
incorrectly, the ‘Phase Reversal’ alarm and graphic will be
displayed on the screen. To correct this condition, refer to
Appendix H to correct the phase reversal setting.
The EPCT has a phase reversal setup procedure that guides
the user through a step by step process to program the
phase rotation. With the controller energized, operate the
‘Bump Motor’ feature through the Setup Phase Reversal in
the Startup tab on the display to check the rotation of the
motor. If the rotation is incorrect, disconnect power and
reverse the connection of the load terminals of the motor
contactor T1, T2 & T3. If the controller is equipped with an
automatic transfer switch (ATS), the guide will prompt the
user to start the generator, transfer and bump the motor.
ote:
N
On models Primary Resistor (FD/FT40), Wye Delta
(Star-Delta) Open (FD/FT70) and Wye Delta (Star-
Delta) Closed (FD/FT80) models, the connection
must be changed on both contactors, 1M and 2M.
Adjust the pressure set points detailed in Appendix E.
With the controller isolated and the ‘Start Pressure’ and
‘Stop Pressure’ values programmed, energize the controller.
If the system water pressure is lower than the start
pressure, the controller will start the pump. If the controller
is set up for fully automatic operation, the controller will
stop the pump when the pressure is above the stop point
and the running period timer (RPT) has completed its timed
interval. The system pressure must be equal to or greater
than the programmed stop pressure value, otherwise the
pump will stop only when the pushbutton is pushed. If the
controller is not setup for automatic shutdown operation
(programmed for manual stop mode), the stop pushbutton
must be operated to stop the pump.
The circuit breaker setting is factory set and should not
be adjusted.
If required, the running period timer (RPT) must be set
for a minimum of ten (10) minutes. Refer to Appendix F
for programming of the RPT.
