Product Manual

ManualsBrandsLiberty Pumps ManualsAll Liberty PumpsLiberty Pumps AE Series Duplex Pump Control Panel with Alarm

Table Of Contents

Single Phase Duplex

AE21L=3, AE21H=3, AE21L=4, AE21H=4

AE24L=3, AE24H=3, AE24L=4, and AE24H=4

Manufactured by SJE-Rhombus

Installation Instructions and Operation/Troubleshooting Manual

This control panel must be installed and serviced by a licensed electrician in accordance

with the National Electric Code NFPA-70, state and local electrical codes.

All conduit running from the sump or tank to the control panel must be sealed with conduit sealant

to prevent moisture or gases from entering the panel. NEMA 1 enclosures are for indoor use only,

primarily to provide a degree of protection against contact with enclosed equipment. Cable connectors

are not required to be liquid-tight in NEMA 1 enclosures. Do not use NEMA 1 enclosures if subjected

to rain, splashing water or hose-directed water. NEMA 4X enclosures are for indoor or outdoor

use, primarily to provide a degree of protection against corrosion, windblown dust and rain, splashing

water and hose-directed water. Cable connectors must be liquid-tight in NEMA 4X enclosures.

ELECTRICAL SHOCK HAZARD

Disconnect power before installing or servicing

this product. A qualified service person must install

and service this product according to applicable

electrical and plumbing codes.

EXPLOSION OR FIRE HAZARD

Do not use this product with flamable liquids

Do not install in hazardous locations as defined

by National Electrical Code, ANSI/NFPA 70.

Failure to follow these precautions could result in serious injury or death. Replace product immediately if switch cable becomes damaged

or severed. Keep these instructions with warranty after installation. This product must be installed in accordance with National Electric

Code, ANSI/NFPA 70 so as to prevent moisture from entering or accumulating within boxes, conduit bodies, fittings, float housing, or cable.

Warranty void if panel is modiﬁ ed.

Call factory with servicing questions:

1-800-543-2550

7000 Apple Tree Avenue

Bergen, New York 14416

Phone: 1-800-543-2550

Email: liberty@libertypumps.com

www.libertypumps.com

7249000B

Summary of content (12 pages)

PAGE 1
Single Phase Duplex AE21L=3, AE21H=3, AE21L=4, AE21H=4 AE24L=3, AE24H=3, AE24L=4, and AE24H=4 Manufactured by SJE-Rhombus® Installation Instructions and Operation/Troubleshooting Manual 7000 Apple Tree Avenue Bergen, New York 14416 Phone: 1-800-543-2550 Email: liberty@libertypumps.com www.libertypumps.com This control panel must be installed and serviced by a licensed electrician in accordance with the National Electric Code NFPA-70, state and local electrical codes.
PAGE 2
Installation Instructions Most single phase duplex panels are designed to operate as three or four float systems. The three float system is standard performing the common pump stop, lead pump start, and lag pump start/high level alarm functions. The four float system utilizes separate floats for lag pump start and high level alarm. FIGURE 1: Three float duplex NOTE: Options ordered may affect the number of floats and their functions.
PAGE 3
Installation Instructions Mounting the control panel 1. Determine mounting location for panel. If distance exceeds the length of either the float switch cables or the pump power cables, splicing will be required. For outdoor or wet installation, we recommend the use of a SJERhombus® liquid-tight junction box with liquidtight connectors to make required connections. You must use conduit sealant to prevent moisture or gases from entering the panel. 8. Run conduit to junction box.
PAGE 4
Operations Single phase duplex panels are designed to operate with three or four floats for pump sequencing. The standard float functions are common pump stop, lead pump start, lag pump start/alarm (three floats), or separate lag and alarm floats (four floats). Three Float Operation: As the liquid level rises to the stop float and tips it to the ON (closed) position, the panel will remain inactive. As the liquid level tips the lead float, the lead pump will start.
PAGE 5
Troubleshooting the alarm light. If the light does not activate, replace with bulb of same type. Float Controls Check the floats during their entire range of operation. Clean, adjust, or replace damaged floats. Checking the float resistance - The float resistance can be measured to determine if the float is operating correctly or is defective. Use the following procedure to measure the float resistance. Warning: Disconnect all incoming power to panel.
PAGE 6
Liberty Pumps Three-Year Limited Warranty *NOTE: Liberty Pumps, Inc. assumes no responsibility for damage or injury due to disassembly in the field. Disassembly, other than at Liberty Pumps or its authorized service centers, automatically voids warranty. Liberty Pumps, Inc. warrants that pumps of its manufacture are free from all factory defects in material and workmanship for a period of 3 years from the date of purchase.
PAGE 7
Three Phase Duplex AE34=3-131, AE34=3-141, AE34=3-171, AE34=3-191, AE34=3-511, AE34=4-131, AE34=4-141, AE34=4-171, AE34=4-191, AE34=5-511, AE54=3-121, and AE54=4-121 Manufactured by SJE-Rhombus® Installation Instructions and Operation/Troubleshooting Manual 7000 Apple Tree Avenue Bergen, New York 14416 Phone: 1-800-543-2550 Email: liberty@libertypumps.com www.libertypumps.
PAGE 8
Installation Instructions FIGURE 1: Three float duplex Most three phase duplex panels are designed to operate with three or four float systems. The three float system is standard, performing the common pump stop, lead pump start, and lag pump start/ high level alarm functions. The four float system utilizes separate floats for each function. NOTE: Options ordered may affect the number of floats and their functions. Please reference the schematic provided with the control panel for proper installation.
PAGE 9
Installation Instructions Mounting the Control Panel 1. Determine mounting location for panel. If distance exceeds the length of either the float switch cables or the pump power cables, splicing will be required. For outdoor or wet installation, we recommend the use of an SJERhombus® liquid-tight junction box with liquidtight connectors to make required connections. You must use conduit sealant to prevent moisture or gases from entering the panel. 2. Mount control panel with mounting devices furnished. 8.
PAGE 10
Operations wired in series with the magnetic contactor coil so that on an overload trip, the magnetic contactor will be disabled. In the event of an overload trip, the motor protective switch must be reset by first turning the selector handle counterclockwise to the OFF position and then turning the handle 90o clockwise to the ON position. Three phase duplex panels are designed to operate with three or four floats for pump sequencing.
PAGE 11
Troubleshooting 3. Place the ohmmeter dial to read ohms and place on the R X 1 scale. With the float in the “off” position, the scale should read infinity (high resistance). Replace the float if you do not get this reading. With the float in the ON position, the scale should read nearly zero (very low resistance). Replace the float if you do not get this reading. Alarm Horn Pressing the alarm test/normal/silence switch to the test position or activating the alarm float should turn on the alarm horn.
PAGE 12
Liberty Pumps Three-Year Limited Warranty *NOTE: Liberty Pumps, Inc. assumes no responsibility for damage or injury due to disassembly in the field. Disassembly, other than at Liberty Pumps or its authorized service centers, automatically voids warranty. Liberty Pumps, Inc. warrants that pumps of its manufacture are free from all factory defects in material and workmanship for a period of 3 years from the date of purchase.