Hubbell LX-1500 User Manual

Hubbell Industrial Controls, Inc.

A subsidiary of Hubbell Incorporated

50 Edwards St.
Madison, OH 44057

Instruction Manual

Fire Pump Controller

Model LX-1500

HUBBELL

Telephone [phone]

FAX [phone]

Limited Service

Electric

Publication No. 197

April, 2000

Limited Service Fire Pump Controller

Table of Contents

I Introduction..................................................................................................................................3

II Specifications and Certifications................................................................................................3

Specifications ................................................................................................................................3

Certifications.................................................................................................................................4

III Receiving, Handling, and Storage .............................................................................................4

IV Installation................................................................................................................................. 4

V Sequence of Operation................................................................................................................5

VI Start Up Procedure....................................................................................................................7

VII Maintenance.............................................................................................................................9

Preventive Maintenance.................................................................................................................9

Troubleshooting.............................................................................................................................9

Coil and Contact Replacement.....................................................................................................10

VIII Limited Service Fire Pump Controller Parts....................................................................... 11

Attachments

Typical Controller Schematic
Typical Field Connection Diagram

Notes
Refer to job drawings for options.
For combination Automatic Transfer Switch/Fire Pump Controller applications, refer to
Publication No. 186 for the LX-250 Transfer Switch or Publication No. 195 for the LX-350
Transfer Switch, for details.

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Limited Service Fire Pump Controller

Line

Suppressor

L1 M1 T1

PLM

CONTROL

I Introduction

The Hubbell Limited Service Fire Pump Controller provides automatic and manual control of
small electric motor driven fire pumps and booster pumps of 30 horsepower or less.

All Controller components are inside the cabinet with indicating lights and switch handles
located next to the door. A pressure switch initiates automatic starting of the pump motor. The
Controller monitors the power phases and voltage. The CIRCUIT BREAKER
DISCONNECTING MEANS handle has a door interlock feature to prevent opening the door
when the switch is closed. The Controller also has an EMERGENCY MANUAL CONTROL
handle to start the fire pump manually.

CIRCUIT

BREAKER

DISCONNECTING

Incoming
Phase

MEANS

Pressure
Switch

Surge

Control
Panel

Figure I-1 Block diagram of LX-1500 showing one phase

II Specifications and Certifications

EMERGENCY
MANUAL

To
Fire Pump Motor

Control
Transformer

Specifications

Voltage
Phase Loss/Reversal Module

200 Series
300 Series
400 Series

Maximum Voltage 10% of highest nominal voltage
Maximum Frequency Shift 0.1 Hz
Phase Loss 18% of low voltage in one phase

208, 240, 380, 480C
A-B-C phase rotation
208–240 VAC, 60 Hz, 3 phase

380–415 VAC, 50 Hz, 3 phase
440–480 VAC, 60 Hz, 3 phase

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Limited Service Fire Pump Controller

Undervoltage Trip 15% below set point
Time Delays Pick-up, 1.5 s, fixed

Drop-out, 1.5 s, fixed

Output Relays 10 A, 120 VAC

5 A, 240 VAC

Indication green LED, on for A-B-C phase rotation

Surge Suppressor

Temperature

650 V rating
Operating: −4° F to 104° F (−20° C to 40° C)

Storage: −4° F to 182° F (−20° C to 85° C)

Certifications

The Hubbell Limited Service Electric Fire Pump Controller is built to NFPA 20 requirements.
The Controller is listed by:

Underwriters Laboratory Factory Mutual
Underwriters Laboratory Canada New York City
Canadian Standards Association

III Receiving, Handling, and Storage

1. Immediately upon receipt, carefully unpack and inspect the Controller for damage that may

have occurred in shipment. If damage or rough handling is evident, file a damage claim with
the transportation carrier.

2. If the Controller must be stored, cover it and place in a clean, dry location. Avoid unheated

locations where condensation can result in damage to the insulation or corrosion of metal
parts.

IV Installation

1. Consult the motor nameplate to determine voltage, current, and horsepower rating and

compare with the Controller nameplate for matching data.

2. Release the door interlock by moving the CIRCUIT BREAKER DISCONNECTING
MEANS to the OFF position.

3. Inspect the control transformer’s primary connections for agreement with the line voltage of
the incoming power.

4. Exercise all switches and contactors, without power, to see that they operate freely.

5. Choose a location or base for the Controller that is non-combustible and within site of the
motor. The base should not be subject to excessive vibration that may cause erratic operation
of the PS (pressure switch). The Controller should be leveled so that the PS is level. Sight
across the PS cover screws.

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