Tornatech LFX Manual

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INSTALLATION AND MAINTENANCE MANUAL FOR
ELECTRIC FIRE PUMP CONTROLLERS
MODEL LFX

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LFX-Manual-EN v1.1.0.0
1. Introduction
Table of Contents
2. Installation
3. Main Features
4. Alarms
5. Technical Documents

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Table of Contents
Introduction......................................................................................................................................................................4
Types of Electric Fire Pump Controllers ....................................................................................................................4
Methods of Starting/Stopping.....................................................................................................................................4
Installation.......................................................................................................................................................................5
Location......................................................................................................................................................................5
Mounting ....................................................................................................................................................................5
Storage.......................................................................................................................................................................5
Wiring and Connections.............................................................................................................................................5
Electrical Wiring .........................................................................................................................................................5
Electrical Connections................................................................................................................................................5
Sizing..........................................................................................................................................................................5
Incoming Power Connections ....................................................................................................................................6
Motor Connections.....................................................................................................................................................6
Terminal Strip Descriptions........................................................................................................................................7
Quick Start-Up Guide.................................................................................................................................................8
Maintenance...............................................................................................................................................................9
Main Features ...............................................................................................................................................................10
Inputs........................................................................................................................................................................10
Outputs.....................................................................................................................................................................10
Alarms...........................................................................................................................................................................11
Alarms (Remote Alarm Panel) .................................................................................................................................11
Troubleshooting .......................................................................................................................................................11
Technical Documents....................................................................................................................................................12
Pre-Field Acceptance Test.......................................................................................................................................13
Field Acceptance Test Report..................................................................................................................................15

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Electric fire pump controllers are designed to start an electric motor driven fire pump. It can either start the fire
pump manually through the local start pushbutton or automatically through the sensing of a pressure drop in the
sprinkler system. The fire pump can be stopped manually with the local stop pushbutton or automatically after the
restauration of the pressure in the sprinkler system. In both cases, stopping is only allowed if all starting causes
have disappeared.
Types of Electric Fire Pump Controllers
FIRE PUMP CATALOG NUMBER
MODEL No. EXAMPLE: LFY - 380 / 50KW / 3 / 50
Model Prefix: LFY
Voltage: 380 V
HP/KW Rating: 50 / 50KW
Phase: 3
Frequency: 50 Hz
ACROSS-THE-LINE STARTER
MODEL LFA:
This model is intended to be used where the local utility or the capacity of the power source permits across-
the-line starting.
Full voltage is applied to the motor as soon as the controller receives a start command.
REDUCED VOLTAGE STARTERS
These models are intended to be used where the local utility or the capacity of the power source does not permit full
voltage starting.
MODEL LFY: WYE-DELTA OPEN TRANSITION STARTER
This type of starter requires a multi-connection motor and 6 conductors between the controller and the
motor.
Upon a start command, the motor is connected to the line in the Wye connection. After a time delay, the
motor is reconnected to the line in the Delta configuration applying full voltage to the motor windings. This
controller is of the open transition type. The motor is disconnected from the line during the transition from
start (wye) to run (delta) mode.
Methods of Starting/Stopping
The controllers are available as combination automatic / non-automatic.
METHODS OF STARTING
AUTOMATIC START
The controller will start automatically on low pressure detection by the pressure switch when the pressure drops
below the cut-in threshold.
MANUAL START
The motor can be started by pressing the EMERGENCY START push button, regardless of the system pressure.
METHODS OF STOPPING
MANUAL STOP
Manual stop is done by pressing the priority STOP push button. Note that pressing the stop push button will
prevent the motor from restarting as long as the button is pressed.
Introduction

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The LFX electric fire pump controller is intended to be installed in accordance with the Loss Prevention Standard
1237 Requirements for control panels for electric motor driven pumps used in automatic sprinkler installations and
the Local Electrical Codes.
Location
The controller shall be located as close as practical to the engine/motor it controls and shall be within sight of the
engine/motor. The controller shall be located or protected such that it will not be damaged by water escaping from
pump or pump connections. Current carrying parts of the controller shall be not less than 12 in. (305 mm) above the
floor level.
Working clearances around controller shall comply with local codes.
The controller is suitable for use in locations subject to a moderate degree of moisture, such as a damp basement.
The pump room ambient temperature shall be between 32°F (0°C) and 122°F (50°C).
The standard controller enclosure is rated IP55. It is the installer’s responsibility to insure that either the standard
enclosure meets the ambient conditions or that an enclosure with an appropriate rating has been provided.
Controllers must be installed inside a building and they are not designed for outside environment. The paint color
may change if the controller is exposed to ultraviolet rays for a long period of time.
Mounting
The fire pump controller shall be mounted in a substantial manner on a single incombustible supporting structure.
Wall mounted controllers shall be attached to the structure or wall using all four (4) mounting ears provided on the
controller with hardware designed to support the weight of the controller at a height not less than 12 in. (305 mm)
above floor level. Floor mounted controllers shall be attached to the floor using all holes provided on the mounting
feet with hardware designed to support the weight of the controller. The mounting feet provide the necessary 12 in.
(305 mm) clearance for current carrying parts.
Storage
If the controller is not installed and energized immediately, Tornatech recommend following the instructions from the
chapter 3 of the NEMA ICS 15 standard.
Wiring and Connections
Electrical Wiring
The electrical wiring between the power source and the fire pump controller shall meet the local codes. Electrical
wiring shall be typically sized to carry at least 125% of the full load current (FLC or FLA) of the fire pump motor.
Electrical Connections
A licensed electrician must supervise the electrical connections. The dimension drawings show the area suitable for
incoming power and motor connections. No other location shall be used. Only watertight hub fittings shall be used
when entering the cabinet to preserve the IP rating of the cabinet. The installer is responsible for adequate
protection of the fire pump controller components against metallic debris or drilling chips. Failure to do so may
cause injuries to personnel, damage the controller and subsequently void warranty.
Sizing
Incoming power terminals on the controller are suitable to accept wire based on that selection with insulation not
less than 60°C. (Refer to terminal diagram for terminal sizes.)
The electrical wiring between the fire pump controller and the pump motor shall be in rigid, intermediate, or liquid
tight flexible metal conduit or Type MI cable and meet the requirements of local codes.
Installation

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The number of conductors required varies depending on the model of starter:
3-wires plus ground sized at 125% of full load current for model LFA.
6-wires plus ground sized at 125% of 58% of the motor full load current for model LFY.
Incoming Power Connections
Incoming normal power is to be connected to terminals identified L1 - L2 and L3 located on the disconnecting
means IS. The neutral wire is to be connected to the terminal reserved to this mean.
Motor Connections
The motor wires U1-V1-W1 (and U2-V2-W2 for LFY model) shall be connected to terminals identified by:
- U1-V1 and W1 are located on main contactor (1M) for model LFA.
- U1-V1 and W1 are located on contactor (1M) and U2-V2 and W2 are located on contactor (2M) for model LFY.
It is the responsibility of the installer to obtain connection information on the motor and to assure that the motor is
connected as per motor manufacturer recommendations. Failure to do so may cause injuries to personnel, damage
the motor and/or the controller and subsequently void warranty on both items.

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Terminal Strip Descriptions
B-F: Alarms output terminals and pressure switch
(Pump Running)
B: Start Failure alarm
C: AC Phase Failure alarm
D: Pump Running alarm
E: Pump On Demand alarm
F: Pump Running pressure switch
Field input terminal:
G: Starting Pressure Switch (1-2-3)
Factory IO:
A: Lamps and pushbuttons connections
H: Starter Contactor Connections
I: Power inputs
J: Testing connector (factory use only)

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Quick Start-Up Guide
The rating label is the most important label. It must be read carefully to ensure the compatibility between the
controller and the installation.
Verify that the controller is installed securely on the wall.

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Make sure to drill holes for the motor and power connections and run the cables inside the panel, all in accordance
with the specifications in order to minimize interference with other equipment.
Connect the input power and the motor on their respective terminals. Secure with the appropriate torque as
indicated on the torque label and verify all connections. Secure the door in closed position then put the fuse
isolating switch disconnecting means in ON position.
Verify the motor rotation to ensure that the pump is turning in the right direction. The START and STOP push
buttons can be used to toggle the motor ON/OFF.
Maintenance
Periodically, do this procedure:
1- Verify that the “Main Supply Healthy” lamp is lit.
2- Press the lamp test button and verify that the other 3 lamps are working.
3- Open the plastic hinged cover on the “Emergency Start” pushbutton and press it.
4- Verify that the pump is starting and that the “Pump on Demand” lamp and “Pump Running” lamp are lit.
5- Let the pump run for 5 minutes, then press the “Stop/Reset” pushbutton.
6- Verify that the pump did stop.
7- Replace the cover on the Emergency Start button.

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Inputs
Buttons: This controller is equipped with 3 pushbuttons and an Isolation Switch on the outside of the door.
-Emergency Start (PB1-Green): This button is used to open the sensing circuit and trigger the start of the pump. It is
protected by a plastic cover and should be used only in case of a real fire.
-Stop/Reset (PB2-Red): This button is used to close the sensing circuit and stop the pump. If the demand is still
active, the pump will start again on the release of this button.
-Lamp Test (PB3-Black): This button is used to test 3 of the indication lights (Pump on demand, Start Failure and
Pump Running). The other light (Main Supply Healthy), can’t be tested with this button, but should always be active
if the controller is under power with 3 phases.
-Isolation Switch (IS): Used to power the controller and the pump by closing or opening the 3 phases. It is not
possible to open the controller door without turning OFF the Isolation Switch.
Ammeter: A current transformer on L2 and a display on the controller door enable the user to monitor the Ampere
consumption on one phase.
Pressure Switches (PS1-PS2-PS3): This controller can be equipped with 3 pressure switches. These switches will
open the starting circuit on a pressure drop and activate the starting of the pump. Connect PS1 between 1-1A, PS2
between 1A-1B and PS3 between 1B-2. If one of these switches is not used or removed, place a jumper between
the corresponding connecting points.
Pressure Switch (PS4): This switch is intended to be installed at the pump discharge. The switch contact will open
at low pressure when the pump is not running and trigger the “Start Failure” alarm. At working pressure this switch
will close. Install this switch between 40-41 input on the relay board.
Outputs
Lamps: This controller is equipped with 4 lights to indicate the state of the controller and the pump.
-AC Supply Healthy (Green): This light indicates that the main power is healthy on all 3 phases and that the control
supply is available.
-Pump on Demand (Green): This light indicates that a demand signal is active from either the Emergency Start
button or from a Pressure Switch. The motor should be either starting or running.
-Pump Running (Green): This light indicates that the motor is running.
-Start Failure (Red): This light indicates that the pump is powered but that the discharge pressure is low.
Alarms: See Alarm section for more details
Main Features