Liberty Pumps SX User Manual

Single Phase Simplex

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.

SXL21=3, SXL24=3, SXH21=3, and SXH24=3

Manufactured by SJE-Rhombus

Installation Instructions and Operation/Troubleshooting Manual

7000 Apple Tree Avenue

Bergen, New York 14416

Phone: [phone]

Email: [e-mail]

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.

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.

®

Warranty void if panel is modifi ed.

Call factory with servicing questions:

7203000B

1-800-543-2550

Installation Instructions

Installation of Floats

A standard single phase simplex panel is
designed to operate with three fl oats. These
fl oats operate pump stop, pump start, and high
level alarm functions.

Note: Options ordered may affect the number
of fl oats and their functions. Please reference
the schematic provided with the control
panel for proper installation.

CAUTION: If control switch cables are not wired

and mounted in the correct order, the pump
system will not function properly.

WARNING: Turn off all power before installing
fl oats in pump chamber. Failure to do so could
result in serious or fatal electrical shock.

FIGURE 1: Float Locations

Float Locations
Off Float - 6” above pump inlet
On Float - 6” below basin
Alarm Float - 3” below basin

1. Use fl oat label kit to label fl oats for specifi c
operation (stop, start, alarm, etc.). See sche-

matic for fl oat options.

2. Determine your normal operating level, as il­lustrated in Figure 1.

3. Place the cord into the clamp as shown in
Figure 2 or 3.

4. Locate the clamp at the desired position from

step 2, and secure the clamp to the discharge
pipe as shown in Figure 2 or 3.

5. Make sure the movement of floats is not
restricted.

6. Wire switch per wiring diagram.

7. Check installation. Allow system to cycle to

insure proper operation.

FIGURE 2: Clamp detail, mounting to pipe:

Note: Approximate activation level of 1.5 inches (4 cm)

above or below horizontal.

FIGURE 3

Clamp detail, mounting to Liberty Pumps “Quick Tree”:

NOTE: Do not install cord under hose clamp.
Do not install switch in direct line of incoming liquid.

7203000B

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Installation Instructions

Mounting the Control Panel

1. Determine mounting location for panel. If dis­tance exceeds the length of either the fl oat
switch cables or the pump power cables,
splicing will be required. For outdoor or wet
installation, we recommend the use of an SJE-

®

Rhombus
tight connectors to make required connections.

You must use conduit sealant to prevent
moisture or gases from entering the panel.

2. Mount control panel (mounting fl anges are

furnished with control panel).

3. Determine conduit entrance locations on con­trol panel. Check local codes and schematic
for the number of power circuits required.

NOTE: Be sure the proper power supply volt-

age, and phase are the same as the pump
motor being installed. If in doubt, see the pump
identifi cation plate for electrical requirements.

liquid-tight junction box with liquid-

9. Identify and label each wire before pulling
through conduit into control panel and junction
box. Pull pump power cables and control switch
cables through connectors into junction box.
Make wire splice connections at junction box.

10. Firmly tighten all fi ttings on junction box. Insure
all cable connectors are liquid-tight and sealed.

11. If a junction box is not required, identify and

label cables on both fl oat and stripped ends.

12. Connect pump and fl oat wires to proper posi-
tion on terminals. See schematic inside control
panel for terminal layouts.

13. Connect control, alarm and pump power con­ductors to proper position on terminals. See
schematic inside control panel for terminal
connections.

4. Drill proper size holes for type of connectors
being used.

NOTE: If using conduit, be sure that it is of ad-

equate size to pull the pump and switch cables
through. You must use conduit sealant to

prevent moisture or gases from entering
the panel.

5. Attach cable connectors and/or conduit con-

nectors to control panel.

FOR INSTALLATION WITHOUT

A SPLICE, GO TO STEP 11;

FOR INSTALLATION REQUIRING

A SPLICE, FOLLOW STEPS 6-10.

6. Determine location for mounting junction box
according to local code requirements. Do not
mount the junction box inside the sump or
basin.

NOTE: It is the recommendation of the factory

to use separate pump and control/alarm power
sources.

VERIFY CORRECT OPERATION OF

CONTROL PANEL AFTER

INSTALLATION IS COMPLETE.

7. Mount junction box to proper support.

8. Run conduit to junction box. Drill proper size

holes for the type of conduit used. Attach liquid­tight connectors to junction box.

7203000B

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Operations

Simplex control panels are designed to operate in
a three fl oat system as standard. When all fl oats
are in the open or OFF position, the panel is inac­tive. As the liquid level changes and closes the
stop fl oat, the panel remains inactive until the start
fl oat also closes. At this point the pump will start,
providing the HOA switch is in the AUTOMATIC
mode and the power is ON. The pump will remain
ON until both the stop and start fl oats open (return
to the OFF position). If the liquid level travels be­yond both the stop and start fl oats and reaches the
alarm fl oat, the alarm will be activated. The alarm
horn can be silenced by moving the test/normal/
silence switch to the silence position.

Alarm System (Horn and Indicator)

When an alarm condition occurs, a red light and
horn will be activated. If the test/normal/silence
switch is moved to the silence position, the horn will
be silenced. When the alarm condition is cleared,
the alarm system is reset. The alarm system can
be tested by moving the test/normal/silence switch
to the test position.

Pump Run Light

The run light will be ON in either the hand or the
automatic mode when the pump is called to run.

Circuit Breaker (optional)

The pump circuit has a thermal-magnetic circuit
breaker which provides pump disconnect and
branch circuit protection.

Dry Auxiliary Contacts (optional)

Normally open - Contacts are open under normal
conditions and closed when alarm condition is
present.
Normally closed - Contacts are closed under
normal conditions and open when alarm condition
is present. Both types automatically reset once
alarm condition is cleared.

NOTE: Some options ordered may not be in­cluded in this manual.

HOA Switch

A hand-off-automatic switch is provided for the
pump. In the hand mode, the pump will turn on
unless other safety features are employed. In the
automatic mode, the pump will turn on from com­mands by the fl oat switches.

For information regarding the operations

of options not listed here or servicing

questions, please call a Liberty Pumps

customer service technician at

1-800-543-2550

7203000B

Warranty void if panel is modifi ed.

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