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: 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.
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.
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
- 2 -
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
- 3 -
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.
- 4 -
Troubleshooting
Alarm Horn
Moving the test/
normal/silence
switch to the test
position or activating the alarm fl oat should turn on the alarm horn.
If the horn does not sound, replace horn with
same type.
Alarm Light
Moving the test/normal/silence switch to the test
position or activating the alarm fl oat should turn
on the alarm light. If the light does not activate,
replace light with same type.
Circuit Breaker (optional)
Check each pole of the circuit breaker for proper
resistance reading using the following procedure.
WARNING: Disconnect incoming power to
panel.
1. Isolate the circuit breaker by disconnecting
either line side or load side wires.
2. Place the ohmmeter leads across the corresponding line and load terminals of each pole.
3. With the ohmmeter on the R X 1 scale and the
breaker in the OFF position, the reading should
be infi nity (very high resistance). With the
breaker in the ON position, the reading should
be nearly zero ohms (very low resistance). If
the readings are not as stated, replace the
circuit breaker with one of the same ratings.
NOTE: Readings may vary slightly depend-
ing on the accuracy of the measuring device.
Float Controls
Check the fl oats during their entire range of op-
eration. Clean, adjust, or replace damaged fl oats.Checking the fl oat resistance - The fl oat resis-
tance can be measured to determine if the fl oat
is operating correctly or is defective. Use the following procedure to measure the fl oat resistance.
WARNING: Disconnect incoming power to
panel.
1. Isolate the fl oat by disconnecting one or both
of the fl oat leads from the fl oat terminals.
2. Place one ohmmeter lead on one of the fl oat
wires, and the other ohmmeter lead on the
other fl oat wire.
3. Place the ohmmeter dial to read ohms and
place on the R X 1 scale. With the fl oat in the
“off” position, the scale should read infi nity
(high resistance). Replace the fl oat if you do
not get this reading. With the fl oat in the ON
position, the scale should read nearly zero
(very low resistance). Replace the fl oat if you
do not get this reading.
NOTE: Readings may vary depending on the
length of wire and accuracy of the measuring
device.
Fuses
Check the continuity of the fuse. With power OFF,
pull the fuse out of the fuse block. With the ohmmeter on the R X 1 scale, measure resistance. A
reading of infi nity indicates a blown fuse and must
be replaced. Replace fuse with same type, voltage
and amp rating.
Magnetic Contactor Coil
WARNING: Disconnect incoming power to
panel.
Check the coil by disconnecting one of the coil
leads. Measure the coil resistance by setting the
ohmmeter on the R X 1 scale. A defective coil will
read zero or infi nity, indicating a short or opened
coil respectively . Replace defective contactor with
same type.
NOTE: Readings may vary depending on the
accuracy of the measuring device.
7203000B
- 5 -
Liberty Pumps Three-Year Limited Warranty
*
NOTE: Liberty Pumps, Inc. assumes no responsibility for damage or injury due to disassembly in the
fi eld. 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. The date of purchase shall be
determined by a dated sales receipt noting the model and serial number of the pump. The dated sales
receipt must accompany the returned pump if the date of return is more than 3 years from the “CODE”
(date of manufacture) number noted on the pump nameplate.
The manufacturer’s obligation under this Warranty shall be limited to the repair or replacement of any
parts found by the manufacturer to be defective, provided the part or assembly is returned freight prepaid
to the manufacturer or its authorized service center, and provided that none of the following warrantyvoiding characteristics are evident.
The manufacturer shall not be liable under this Warranty if the product has not been properly installed;
if it has been disassembled, modifi ed, abused or tampered with; if the electrical cord has been cut,
damaged or spliced; if the pump discharge has been reduced in size; if the pump has been used in
water temperatures above the advertised rating, or water containing sand, lime, cement, gravel or other
abrasives; if the product has been used to pump chemicals or hydrocarbons; if a non-submersible motor
has been subjected to excessive moisture; or if the label bearing the serial, model and code number has
been removed. Liberty Pumps, Inc. shall not be liable for any loss, damage or expenses resulting from
installation or use of its products, or for consequential damages, including costs of removal, reinstallation
or transportation.
There is no other express warranty . All implied warranties, including those of merchantability and fi tness
for a particular purpose, are limited to three years from the date of purchase.
This Warranty contains the exclusive remedy of the purchaser, and, where permitted, liability for
consequential or incidental damages under any and all warranties are excluded.
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.
SX34=3-131, SX34=3-141, SX34=3-171,
SX34=3-191, SX34=3-511 and SX54=3-121,
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.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 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:
7227000B
1-800-543-2550
Installation Instructions
Installation of Floats
Standard three phase simplex panels are designed
to operate with three fl oats. These fl oats operate the
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 of f all power before installing fl oats in
pump chamber. Failure to do so could result in serious
or fatal electrical shock.
1. Use fl oat label kit to identify and label cables on
both the fl oat and stripped ends (stop, start, alarm,
etc.). See schematic for fl oat options.
FIGURE 1: Three fl oat simplex -
pump down installation
FIGURE 2: Mounting clamp detail
2. Determine your normal operating level, as illustrated
in Figure 1.
3. Mount fl oat switches at appropriate levels as il-
lustrated in Figures 2-4. Be sure that fl oats have
free range of motion without touching each other
or other equipment in the basin.
If using the mounting clamp; follow steps 4-6.
4. Place the cord into the clamp as shown in Figure
2.
5. Locate the clamp at the desired activation level and
secure the clamp to the discharge pipe as shown
in Figure 2.
NOTE: Do not install cord under hose clamp.
6. Tighten the hose clamp using a screwdriver. Over
tightening may result in damage to the plastic
clamp. Make sure the fl oat cable is not allowed to
touch the excess hose clamp band during operation.
FIGURE 3: Internally weighted fl oat
FIGURE 4: Float with cable weight
NOTE: All hose clamp components are made
of 18-8 stainless steel material. See your SJE-
®
Rhombus
7227000B
supplier for replacements.
- 2 -
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 a SJERhombus
tight 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.
3. Determine conduit entrance locations on
control panel.
NOTE: Be sure the incoming power, voltage,
amperage, and phase meet the requirements
of the pump motor being installed. If in doubt,
see the pump identifi cation plate for electrical
requirements.
4. Drill proper size holes for type of connectors
being used.
NOTE: If using conduit, be sure that it is of
adequate size to pull the pump and switch
cables through.
5. Attach cable connectors and/or conduit
connectors to control panel.
®
liquid-tight junction box with liquid-
8. Identify and label each wire before pulling
through conduit into control panel and junction
box. Make wire splice connections at junction
box.
9. Firmly tighten all fi ttings on junction box.
10. If a junction box is not required, pull cables
through conduit into control panel.
11. Set motor protective switch:
a) set the dial to match motor full load amps
b) turn dial on motor protective switch to
the ON position
NOTE: Resetting the dial with power applied
to the motor protective switch could start
the motor.
12. Connect pump wires directly to the motor
contactor terminal positions T1, T2, and T3.
NOTE: Three phase motors will run in either
direction. Check pump motor before installation
for proper rotation. To correct rotation, change
pump cable connections on any two terminals
T1-T2-T3.
13. Connect “power-in” conductors to proper
locations: 208/240/480 on 3 position terminal
block. Install tagged factory wire to
appropriate transformer primary voltage
tap.
FOR INSTALLATION WITHOUT
A SPLICE, GO TO STEP 10;
FOR INSTALLATION REQUIRING
A SPLICE, FOLLOW STEPS 6-9.
6. Determine location for mounting junction box
according to state and local code requirements.
Mount junction box to proper support.
7. Run conduit to junction box. Drill proper size
holes for the type of conduit used. Attach
connectors to junction box.
7227000B
VERIFY CORRECT OPERATION OF
CONTROL PANEL AFTER
INSTALLATION IS COMPLETE.
- 3 -
Operations
Three phase 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 inac-
tive until the start fl oat also closes. At this point
the pump will start, assuming the HOA switch is in
the AUT OMATIC 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 audio/visual alarm
will be activated. The alarm horn can be silenced
by pressing the silence switch.
Alarm System (Horn and Indicator)
When an alarm condition occurs, a red light and
a 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.
Control Power Light
Light will illuminate when the control circuit has
power.
Alarm Power Light
Light will illuminate when the alarm circuit has
power.
Alarm Fuse
Provides alarm circuit protection and provides a
means of disconnecting alarm circuit power.
Control Fuse
Provides control circuit protection and provides a
means of disconnecting control circuit power.
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.
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.
Motor Protective Switch
A motor protective switch is supplied for the pump
to provide an adjustable overload, branch circuit
protection and disconnect. The overload must be
set in the fi eld. To set the overload, dial the amp
scale to the pump’s full load amps (FLA). If the
FLA’s are unknown, use a calibrated amp meter to measure the pump amperage draw under
loaded conditions. An auxiliary contact is 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 fi rst turning
the handle counterclockwise to the OFF position
and then turning the handle 90o clockwise to the
ON 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.
Both types automatically reset once alarm condition is cleared.
Seal Failure Circuit and Indicator Light
(Optional)
The seal fail circuit has resistance sensitivity and
will sense the presence of water in the pump seal
chamber. Upon installation, turn the sensitivity dial
on the seal fail module to the point where the light
turns on, then dial back slowly until the light turns
off. If water enters the seal chamber at this point,
the seal chamber circuit will sense a change in
resistance. After a short time delay, the indicator
light will turn on. When the condition is cleared, the
relay will de-energize and the indicator light will turn
off. The seal fail relay has a sensitivity adjustment
so that false readings may be tuned out.
Thermal Cutout (Optional)
The thermal cutout circuit is wired in series with
the magnetic contactor coil. If the pump’s thermal
switch opens on high temperature, the magnetic
contactor will turn off and stop the pump. When
the thermal switch cools and closes, the magnetic
contactor will turn on if the pump is called to run.
NOTE: Some options ordered may not be included
in this manual.
7227000B
- 4 -
Troubleshooting
Fuses
Check the continuity of the fuse. With power OFF,
pull the fuse out of the fuse block. With the ohmmeter on the R X 1 scale, measure resistance. A
reading of infi nity indicates a blown fuse and must
be replaced. Replace fuse with same type, voltage
and amp rating.
Alarm Horn
Moving the alarm test/normal/silence switch to the
test position or activating the alarm fl oat should
turn on the alarm horn. If the horn does not sound
replace with horn of same type.
Alarm Light
Moving the alarm test/normal/silence switch to the
test position or activating the alarm fl oat should
turn on the alarm light. If the light does not activate,
replace with bulb of same type.
Float Controls
Check the fl oats during their entire range of opera-
tion. Clean, adjust, or replace fl oats.
Checking the fl oat resistance - The fl oat resis-
tance can be measured to determine if the fl oat
is operating correctly or is defective. Use the following procedure to measure the fl oat resistance:
1. Isolate the fl oat by disconnecting one or both
of the fl oat leads from the fl oat terminals.
Indicator Lights
If defective, replace all indicator pilot lights with
same type.
Magnetic Contactor
Contacts - Check the contacts for severely burnt
or welded contacts. The contactor arm should
move freely.
Coil - Measure the coil by disconnecting one of
the coil leads. Measure the coil resistance by setting the ohmmeter on the R X 1 scale. A defective
coil will read zero or infi nity, indicating a short or
opened coil respectively. Replace defective contactor with same type.
NOTE: Readings may vary depending on accuracy
of the measuring device.
Motor Protective Switch
T est by inserting a paper clip or other small device
into the test hole and push to the left. The relay
should trip.
2. Place one ohmmeter lead on one of the fl oat
wires, and the other ohmmeter lead on the
other fl oat wire.
3. Place the ohmmeter dial to read ohms and
place on the R X 1 scale. With the fl oat in the
“off” position, the scale should read infi nity
(high resistance). Replace the fl oat if you do
not get this reading. With the fl oat in the ON
position, the scale should read nearly zero
(very low resistance). Replace the fl oat if you
do not get this reading.
NOTE: Readings may vary depending on the
length of wire and accuracy of the measuring
device.
7227000B
- 5 -
Liberty Pumps Three-Year Limited Warranty
*
NOTE: Liberty Pumps, Inc. assumes no responsibility for damage or injury due to disassembly in the
fi eld. 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. The date of purchase shall be
determined by a dated sales receipt noting the model and serial number of the pump. The dated sales
receipt must accompany the returned pump if the date of return is more than 3 years from the “CODE”
(date of manufacture) number noted on the pump nameplate.
The manufacturer’s obligation under this Warranty shall be limited to the repair or replacement of any
parts found by the manufacturer to be defective, provided the part or assembly is returned freight prepaid
to the manufacturer or its authorized service center, and provided that none of the following warrantyvoiding characteristics are evident.
The manufacturer shall not be liable under this Warranty if the product has not been properly installed;
if it has been disassembled, modifi ed, abused or tampered with; if the electrical cord has been cut,
damaged or spliced; if the pump discharge has been reduced in size; if the pump has been used in
water temperatures above the advertised rating, or water containing sand, lime, cement, gravel or other
abrasives; if the product has been used to pump chemicals or hydrocarbons; if a non-submersible motor
has been subjected to excessive moisture; or if the label bearing the serial, model and code number has
been removed. Liberty Pumps, Inc. shall not be liable for any loss, damage or expenses resulting from
installation or use of its products, or for consequential damages, including costs of removal, reinstallation
or transportation.
There is no other express warranty . All implied warranties, including those of merchantability and fi tness
for a particular purpose, are limited to three years from the date of purchase.
This Warranty contains the exclusive remedy of the purchaser, and, where permitted, liability for
consequential or incidental damages under any and all warranties are excluded.