
OIL SMART SIMPLEX SYSTEM
The Oil Smart Simplex System, when combined with
a manual sump pump, will automatically pump water
without the risk of pumping oil into the environment.
Additionally, the system alerts maintenance or
building personnel in the event of a high oil or high
water condition. Installation of the Simplex Panel
allows you to comply with Elevator Code ASME A17.1
and State/Federal regulations while reducing the risk
of adverse publicity, fines and expensive cleanup
costs.
FEATURES
Patented Oil Smart® and Liquid Smart® Controls with
20' cords and mounting brackets.
Indoor/Outdoor NEMA 4X Heavy Duty Polycarbonate
Enclosure: 10"x8"x4", color gray material 94V-2,
polycarbonate, IP-56 rating.
Voltage: 120/208/240 VAC single phase 50/60 hz
CSA International Certified No. 229294
External Mounting Feet: Quick installation
5. Run pump cable, Liquid Smart® cable, and
Oil Smart® cable through conduit. Make field
connections as shown on wiring diagram (see page
3).
6. Run power line conductor through conduit. Wire
to terminals per enclosed schematic. Branch circuit
protection to be provided by end-user.
COMPONENTS INSTALLATION
1. The Oil Smart Pump Switch and Liquid Smart Alarm
Sensor shall be mounted in a clean environment,
clear of mud and all metallic debris.
2. The switches shall be installed where the water
intrusion will not directly contact or splash the white
plastic case.
3. Mud or other conductive materials left on the body
of the switches will hamper its operation; take effort
to clean the switch prior to initial installation.
4. Mount with enclosed mounting brackets. Note:
Keep sensors at least 2" clear of any metallic
material.
High liquid alarm with test and silence features, red
beacon alarm light, white light for water present,
yellow light for oil present, high 85 decibel audible
alarm. Complete dry contacts for each alarm
condition.
HOA switch and green light for pump run
WARNING
ALL INSTALLATIONS MUST BE IN
ACCORDANCE WITH THE NATIONAL
ELECTRICAL CODE AND ANY OTHER APPLICABLE
STATE AND LOCAL ELECTRICAL REQUIREMENTS.
PANEL INSTALLATION
1. CAUTION: To maintain the NEMA 4X rating, make
all wiring connections with seal tight cable grips or
conduit connections to be supplied by end user.
2. Determine mounting location for control panel.
Mount panel using mounting feet supplied.
3. Determine hole location on panel for liquid-tight
or conduit connections. Attach connectors and
conduits.
TESTING
Liquid Smart® Alarm Sensor: Fill small cup supplied
with oil. Submerge only the plastic lens (optic sensor)
into oil, the alarm will activate showing oil present
(yellow light). Now touch finger to the exposed
stainless steel sensor, the alarm will show water
present (white light) will turn on.
4. If pump is present, it is important that the alarm
circuit is independent of the pump to assure that
the alarm will activate if pump circuit fails.
2

Oil Smart® Switch: Place HOA switch on control panel
in the automatic position. Place your thumb on the
short sensor of Oil Smart Pump Switch and the pump
will turn on. While touching the short sensor, touch
the long sensor "off" with your fingers. Remove your
thumb from on sensor and begin to move your fingers
down the off sensor. Remove your fingers from off
sensor and the pump will turn off. OR fill sump with
water, when water reaches on sensor, the pump will
turn on and remain on until water clears the off sensor.
OPERATION
Normal Conditions (Water Only)
The short sensor probe turns the
pump "on" and the long sensor
probe turns the pump "off". When
the short sensor is in contact with
water, the pump will continue to
cycle "on and off" until the short
sensor detects oil.
Oil Present Condition
The pump will not cycle if oil is in
contact with the short sensor. As
oil continues to rise, the alarm will
sound that there is oil present and
the oil will be pumped from the
sump.
WATER
OIL
LAYER
WATER
ON OFF
OIL SMART AND LIQUID SMART MAINTENANCE
The Oil Smart Pump and the Liquid Smart Alarm
Switches are designed and tested to withstand the
normal sump environment conditions. To ensure
longevity of the components, make sure to wipe
clean of any conductive material if the switch is
submerged in water during initial install.
High Water (Oil Present Condition)
If additional water enters the basin,
it will cause the oil layer to rise
above the short sensor, resulting in
the pump cycling.
COMPONENT INSTALLATION
Liquid Smart Sensor
OIL
LAYER
WATER
21
6” OFF Sensor
OFF Sensor needs to be a minimum
of 1.5” above impeller
3

CENTRIPRO LIMITED WARRANTY
This warranty applies to all water systems pumps manufactured by CentriPro.
Any part or parts found to be defective within the warranty period shall be replaced at no charge to the dealer during the warranty period. The warranty period shall exist for a
period of twelve (12) months from date of installation or eighteen (18) months from date of manufacture, whichever period is shorter.
A dealer who believes that a warranty claim exists must contact the authorized CentriPro distributor from whom the pump was purchased and furnish complete details
regarding the claim. The distributor is authorized to adjust any warranty claims utilizing the CentriPro Customer Service Department.
The warranty excludes:
(a) Labor, transportation and related costs incurred by the dealer;
(b) Reinstallation costs of repaired equipment;
(c) Reinstallation costs of replacement equipment;
(d) Consequential damages of any kind; and,
(e) Reimbursement for loss caused by interruption of service.
For purposes of this warranty, the following terms have these definitions:
(1) “Distributor” means any individual, partnership, corporation, association, or other legal relationship that stands between CentriPro and the dealer in purchases,
consignments or contracts for sale of the subject pumps.
(2) “Dealer” means any individual, partnership, corporation, association, or other legal relationship which engages in the business of selling or leasing pumps to customers.
(3) “Customer” means any entity who buys or leases the subject pumps from a dealer. The “customer” may mean an individual, partnership, corporation, limited liability
company, association or other legal entity which may engage in any type of business.
THIS WARRANTY EXTENDS TO THE DEALER ONLY.
Xylem, Inc.
2881 East Bayard Street Ext., Suite A
Seneca Falls, NY 13148
Phone: (866) 325-4210
Fax: (888) 322-5877
www.centripro.com
CentriPro is a trademark of Xylem Inc. or one of its subsidiaries.
© 2013 Xylem Inc. IMOSSS Rev. 0 February 2013