SJE Rhombus 124 User manual

Model 124
Single Phase Duplex
Intrinsically Safe
Warranty void if panel is modied.
1
For information regarding operation,
available options, or servicing
questions, please call SJE Rhombus
Technical Support.
SJE Rhombus oers a ve-year limited warranty.
For complete terms and conditions, please visit www.sjerhombus.com.
Products returned must be cleaned, sanitized, or decontaminated as necessary
prior to shipment to ensure that employees will not be exposed to health
hazards in handling said material. All applicable laws and regulations shall apply.
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Installation and Operation Manual
Model 124
Single Phase Duplex
Intrinsically Safe
Installation and Operation 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.
UL Type4X enclosures are for indoor or outdoor use.
Technical support,
service questions:
1-800-Rhombus
(1-800-746-6287)
Monday - Friday
7:00 AM to 6:00 PM CST
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Parts Included
x3
or
x4
Control panel may be
ordered with or
without these items.
x4
Manufactured by: SJE Rhombus PN 1009557F 06/20
© 2018 SJE, Inc. All Rights Reserved.
SJE RHOMBUS is a trademark of SJE, Inc.
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.
UL Type 4X enclosures are for indoor or outdoor use.
When installed according to these instructions and Article 504 of the National Electrical
Code (NFPA 70) this control panel provides intrinsically safe sensing circuits for interface
with Class 1, Division 1, Groups C and D hazardous locations. Intrinsically safe wiring
must be in accordance with the enclosed control drawing of the specic intrinsically
safe relay manufacturer.
Technical support: [phone]
[email protected]
www.sjerhombus.com
Technical Support Hours: Monday-Friday, 7:00 AM to 6:00 PM Central Time

Installing the Float Switches
The Model 124 Single Phase Duplex control panel operates with
oat switches. They activate pump STOP, LEAD pump START,
LAG pump START and high-level ALARM functions.
Mounting the Control Panel
1 2
3
CAUTION!
NOTE
Ensure all power is turned OFF
before installing oats in tank.
Failure to do so could result in
serious or fatal shock.
If the oats are not properly mounted and connected in the correct
order, the pumps will not function properly.
Label each oat and cord end
with the provided pairs of
STOP, LEAD, LAG, and ALARM
stickers.
If the distance to the control panel exceeds the length of
the oat switch cords or the pump power cord, splicing
in a liquid-tight junction box will be required. For outdoor
or wet installation, we recommend an SJE Rhombus UL
Type 4X junction box.
2
LEAD LEAD
STOP
STOP
Lag Lag Lag
Alarm
Stop
Stop Stop
Alarm
Lead
Lead
Lead
Alarm
Operating
range
Make sure hose clamp
band does not interfere
with oat operation.
Do not install cord under
hose clamp.
Tighten
the
clamp.
Floats require free range of motion.
They must not touch each other or any equipment in the pump chamber.
Hose clamp is 18-8
stainless steel.
3.5”
(9cm)
Pipe Clamp Mounting
4 Float Operation
Pipe Clamp Mounting
3 Float Operation
Lag/Alarm
Stop
Stop Stop
Lag/Alarm
Lead
Lead
Lead
Lag/Alarm
Operating
range

Wiring the Control Panel Operation
SJE Rhombus Model 124 Single Phase Duplex control panel
operates with oat switches. When all oats are in the
open or OFF position, the panel is inactive. As the liquid
level rises and closes the STOP oat, the panel remains
inactive until the LEAD oat closes. At this point the LEAD
pump will turn ON (if the Hand-O-Auto switch is in the
AUTO mode and the power is ON). The pump will remain
ON until both the STOP and LEAD oats return to their OFF
positions. If the liquid level rises beyond both the STOP
and LEAD oats to reach the LAG oat, the lag pump will
turn ON (if the Hand-O-Auto switch is in the AUTO mode
and the power is ON). Both pumps will remain ON until the
STOP, LEAD, and LAG oats return to their OFF positions.
If the liquid level rises to reach the ALARM oat, the alarm
will be activated.
Alarm System (Indicator Light and Horn)
When an alarm condition occurs, the red light and horn will
be activated.
If the TEST/NORMAL/SILENCE switch is moved to the
SILENCE position and released, the horn will be silenced.
When the alarm condition is cleared, the alarm system is
reset.
Circuit Breakers (optional)
Circuit Breakers provide pump disconnect and branch
circuit protection.
Auxiliary Contact
Form C - Can be wired normally open or normally closed.
Hand-O-Auto (HOA) Switches
The HOA 3-way switches control pump functions.
In HAND mode, the pump will turn ON.
OFF turns the pump OFF.
In AUTO mode, commands from the oat switches
turn each pump ON and OFF.
Motor Contactors
Motor contactors control pumps by switching electrical lines.
Adjustable Overloads (optional)
Adjustable overloads provide thermal overload protection
for pump.
Intrinsically Safe Module
The intrinsically safe module limits the amount of energy to
switches preventing ignition of ammable gases.
1Determine conduit entrance locations on control panel as shown.
Check local codes and schematic on the inside cover of the panel
for the number of power circuits required.
Be sure the pump power voltage and phase are the same as the
pump motor being installed.
2Connect the following wires to the proper terminal positions:
• incoming power
• pump 1
• pump 2
• oat switches
See schematic on inside cover of the control panel for details.
CAUTION!
Technical support,
service questions:
1-800-Rhombus
(1-800-746-6287)
Monday - Friday
7:00 AM to 6:00 PM Central Time
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3Verify correct operation of control panel after installation is
complete.
3
Type 4X conduit must be used to maintain a Type 4X rating of
the control panel.
You must use conduit sealant to prevent
moisture or gases from entering the panel.
CAUTION!
Typical Layout (May vary with options ordered).

4
Technical Support: [phone]
[email protected]
www.sjerhombus.com
Technical Support Hours: Monday - Friday, 7 A.M. to 6 P.M Central Time
PROGRAMMING INSTRUCTIONS
WITH POWER ON, HOAs OFF, FLOATS OFF OR DISCONNECTED, PRESS DESIRED FLOAT BUTTON RAPIDLY 4 TIMES AND HOLD
**PUMP LEDs WILL FLASH UPON SUCCESSFUL PROGRAMMING**
OPTIONS FLOAT BUTTON DEFAULT OPERATION
PUMP FAIL ALARM STOP ON ACTIVATES IF A PUMP CAUSES “LAG” 3 CYCLES IN A ROW
MANUAL ALARM RESET LEAD OFF LATCHES HIGH ALARM: CLEAR WITH EXTERNAL TEST SWITCH
SEAL FAIL HORN LAG OFF ACTIVATES HORN UPON SEAL FAIL
ALARM FLASHER ALARM OFF FLASHES BEACON UPON HIGH ALARM
ALARM CONDITIONS
ALARM BEACON CONTROLLER LED HORN
PUMP FAIL FLASHING RED PUMP LIGHT NO
SEAL FAIL FLASHING SF1, SF2 PROG
FLOAT FAIL FLASHING BAD FLOAT NOT LIT NO
HIGH ALARM SOLID ALARM FLOAT YES
1-2 ALT 2-1
SF1
SF2
SEAL FAIL
LEAD / LAG
SELECTOR
25K
5K NC
150K
100K
125K50K
15K
100K
AUX
ACTS
NO C NC
TB2
H
O
H
O
PUMP 1 PUMP 2
H
O
A
PUMP 1 PUMP 2
H
O
A
H
O
A
H
O
A
TM
ON OFF
STOP LEAD LAG ALARM
TEST TEST TEST TESTTEST TEST TEST
CONT
NO C NC
4 5 6 7 8 9 10
3
TB1
ON OFF
L1 N
1 2
AUX
CONTACTS
NO C NC
10
NO C NC
NO C NC
L1 N
H
O
A
H
O
A
OFF ON
®
ab
c
e
d
f
g
l
k
i
j
h
COMPONENTS
a. ON/OFF Switch - Control/Alarm Power g. Simulate Float Buttons x4
b. 120V Incoming Power Terminals h. Float Terminals x8
c. Power LED - (Green) i. Lead/Lag Selecter Switch
d. Pump HOA Switches j. Dual Seal Fail Pot - (Optional)
e. Float LEDs - (Red) x4 k. Dual Seal Fail LEDs - (Red) - (Optional)
f. Pump LEDs x2
Pump Run - (Green)
Pump Fail - (Red)
l. Auxiliary Alarm Terminals
Model shown contains optional Seal Fail circuitry.