STANCOR
Owner’s and Operator’s Manual
Oil-Minder® Simplex & Duplex
Pump and Control Systems
The Stancor Oil-Minder® Control and
Pump System allows water to be
automatically pumped from elevator
pits, transformer vaults, and industrial
sumps without danger of ejecting
potentially harmful oily substances into
sewers, rivers and waterways. There is
no need for a separate oil-water
separator. The product is engineered for
efficient and trouble free pumping, even
under the most severe conditions. The
Stancor Oil-Minder® System is the
overwhelming choice among design
engineers and compliance authorities
worldwide, and has a proven record for
protecting valuable equipment and the
environment.
Features
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NEMA 4x weathertight corrosion resistant polycarbonate enclosures
Stainless Steel sensor probe with patented electronic technology that repels dirt contamination
Single direct plug-in power source for operation of entire system
Solid state components
Alarms, lights, silence switch, and remote monitoring circuit for oil, high liquid, and high amperage
conditions as well as many custom options are available
Complete factory assembly and testing insures quality of entire pump and control system
Patented - Pat. #4,715,785, #4,752,188, #6,203,281 and others pending
Oil-Minder® System can be combined with a variety of different pumps and valves
Choice of: 115v, 208v or 220v (1 phase) OR 208v/230v/460v/575v (3 phase)
LED indicator lights for oil spill, power, high liquid level, overload, and pump run
UL 508 and 778 approved
ENTELA tested and approved as a system
"There Is Only One Oil-Minder® System and Stancor Makes It"
Quality You Can Believe In
Table of Contents
Pump Selections – Pages 3-5
Oil-Minder® System Description – Page 6
Warning! – Page 7
Pump Installation and Operating Instructions – Pages 8-9
Care and Maintenance – Page 10
Performance & Operating Sequence – Pages 11-12
Typical Simplex Multi-Option Oil-Minder® System – Page 13
Control Wiring – Pages 14-15
OM-300 Wiring – Pages 16-17
Oil-Minder® Test Procedure – Pages 18-21
Duplex Oil-Minder® System – Pages 22-23
Wiring Diagrams – Pages 24-27
Control Board Specs & Oil Sensitivity Settings – Pages 28-29
Troubleshooting – Pages 30-32
Pump Service and Repair – Pages 33-34
Pump F.L.A. – Page 35
SE/SV-Series Dimensions – Page 36
Spare Parts Diagrams – Pages 37-38
SE/SV Pump Exploded Diagram – Page 39
SE/SV Pump Material Construction – Page 40
2
Description of Stancor Simplex Oil-Minder® Systems
The Stancor Simplex Oil-Minder® System is available in two primary configurations, as follows:
The Multi-Option Oil-Minder® System is designed for easy, fool-proof installation. All pump and
control cables are factory wired into a wall mountable junction box. Between the junction box and the
main Oil-Minder® control panel is a multi-pin quick connect cable. This single cord, 8-pin system
allows the electrical cable between the junction box and control panel to be run through conduit and
interconnected up to 250 feet long, using a single "push and turn" motion. There is no need for field
wiring. Electrical Installation costs are reduced by approximately 75% and all connections are secure
and water-tight. This system is available for pumps using less than 8 amps.
The Junior or Direct Wire Oil-Minder® System is a good choice where the main control is located in
the same area as the pump pit, or where the main control will be located remotely and conventional
"hard wiring" is used between a junction box and the main control. Comparative features of each model
are as follows:
Feature included in standard package
SE-40 (.4 HP) or SE-50 (.5 HP) 115V or 230V
single phase pump
Solid state NEMA 4x control panel
Separate LED indicator lights on NEMA 4x
control for A) oil alert, B) high water, C) high
motor amps, D) power to system, and E) pump
activation
Self cleaning, hermetically sealed stainless steel
oil detection probe
Float switches for pump activation and high
water alert
Monitoring relays for alert conditions at remote
locations
High decibel, water tight horn and silence
switch for alert conditions
Direct plug-in activation of entire pump and
control system from the main control panel
(6' cord and molded plug included)
Factory hard wiring of pump, oil probe, and
floats into NEMA 4x junction box
Factory hard wiring of pump, oil probe, and
floats directly into main NEMA 4x control
panel
Junction box with male 8-pin cable receptacle
25' 8-pin Quick Connect cable (expandable to
250' with interconnecting extension cables)
Female 8-pin cable receptacle installed in the
NEMA 4x control panel
O/M
Multi-Option
O/M
Junior/Direct Wire
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
3
Standard Pump
Selection Chart
General & Electrical Specifications (Special voltages and pump models available upon request)
Rated
Max.
Max.
Discharge
Model
H.P.
Voltage
RPM
Full-Load
Head
Flow
Size
Amps
Ft.
GPM
115/230
SE-50
0.5
3600
8/4
2"
37'
74
460
SE-40
0.4
115
3600
5
2"
22'
64
4
Additional Pump Selections
ASME A 17.1 Section 2.2.2.5 (2007) requires that, for each building elevator, the elevator sump pump
shall be capable of pumping at least 3,000 gallons per hour. Therefore, after considering vertical lift and
pipe friction losses, a larger pump selection may be necessary for certain projects.
No matter what the pump capacity requirement may be, Stancor has an Oil-Minder® System that will do
the job.
Please refer to the chart below for additional commonly specified pump selections. Stancor
manufactures pumps up to 75 HP, details of which can be found at www.stancorpumps.com.
Specifications
Output
Discharge
Rated
Cable
Pump & System
Max.
Max.
Length
HP
Voltage
Amps
In.
Model
Head (ft) Capacity
(ft)
SE-40 O/M
4/10
115
5
2"
22
64 GPM
16
SE-50 O/M
1/2
115/220/460
8/4/2
2"
37
74 GPM
16
SE-100 O/M
1
115/220/460 14/7/3.5
2"
50
100 GPM
33
SE-100HH O/M
1
115/220/460 16/8/4.5
2"
80
80 GPM
33
SE-200 O/M
2
220/230/460 21/10/5.5
2" (3")
62
172 GPM
33
SV-300 O/M
3
230/460
9/5.2
3" (4")
70
210 GPM
33
SV-500 O/M
5
230/460
15/8.6
3" (4")
80
280 GPM
33
SV-750 O/M
7.5
230/460
22.5/12.8
3" (4")
90
330 GPM
33
1. Female threaded connection provided, standard
2. 208V available as special order
3. Models up to 7 amps are available with 8-pin quick connect cable and standard on all "O/M MultiOption" Systems
4. All pumps available in 50 Hz configuration – consult factory
SE Series Performance Curves
SV Series Performance Curves
5
Oil-Minder® System Description
The Stancor Oil-Minder® System is a submersible pump and control package designed to pump water out of
elevator sumps without the danger of ejecting hydraulic fluid into sewers and waterways. This patented product
has been used in thousands of applications for more than 20 years.
The Oil-Minder® System consists of a watertight, corrosive-resistant control panel, a properly sized electric
submersible pump and oil-sensing probe and solid-state electrical relay components. The submersible pump is
permanently installed at the base of the elevator pit or vault and designed to turn on and off automatically when
the built-in level switch is activated.
A self-cleaning, hermetically sealed, stainless steel oil-sensing probe is mounted on the side of the pump. The
probe is positioned at a point above the pump inlet, so that it sends a signal to a relay that shuts the pump off if oil
is encountered before pollutants are ejected. If the water level in the elevator pit increases, the oil (which is lighter
than water) will rise above the oil-sensing probe and allow the pump to function in the normal manner until the
water is pumped down, and oil, once again, comes in contact with the probe.
How the Stancor
Oil Minder® System Works:
6
WARNING!
Please read all installation and start-up instructions before proceeding to
install the enclosed Stancor Oil-Minder® Pump and Control system.
Failure to properly install and test this product can result in personal
injury or equipment malfunction.
1. The tip of the oil detection probe must be above the center-line of the pump volute.
Failure to position the oil detection probe above the center-line of the volute may cause
the pump to activate even when oil is present in the sump. The probe is installed on
standard systems by the factory and should not be altered.
2. The teeter float switch should be positioned such that the "off" activation point is
above the tip of the oil detection probe and the "on" point is at or above the top of the
pump. This will assure that the oil detection probe reacts to water or oil before the
pump has the opportunity to turn on. The float is properly preset at the factory for
standard systems unless otherwise specified.
3. All wiring should be in accordance with state and local codes. If internal control
rewiring becomes necessary, be sure to follow the wiring schematic provided with
these instructions.
4. Any technical questions should be directed to the technical department at Stancor, Inc.
at 203-268-7513
7
Pump Installation and Operating Instructions
Thank you for purchasing one of our pumps. This pump and control system carries a one year warranty.
Should a fault develop that is due to either faulty materials or a fault in manufacture, the pump will be
repaired or replaced free of charge. (See warranty for complete terms and conditions.
Our range of Submersible Dewatering Pumps are suited for Dewatering or recirculating applications.
They are extremely quiet in operation which makes them ideal for applications within construction areas
for pits, waterfalls, general drainage, electrical utility pits, transformer vaults, parking garages, etc.
Our range of Submersible Sewage Pumps are suited for sewage, light slurry and factory waste, sludge
carry-off in wastewater-treatment, all sanitary applications, sewage and waste water duties.
This Submersible Sump Pump has been factory checked prior to delivery; however, please check for any
damage during transport and report same to the carrier without delay. Sales and service is available
from Authorized Dealers. Consult the factory for the nearest repair center.
Start-up Description
Check the data tag for correct voltage. When permanently installing the pump in a sump, for example,
make sure that the holding capacity of the sump is proportional to the capacity of the pump. If the sump
is too small the pump will stop and start too often. Recommended maximum start-ups per hour is 10. If
used with hose, check that no kinks or restrictions are present. Use a check valve if possible to prevent
back-flow.
Electrical Connection
Check that the power is off and line is disconnected before working on the pump.
Warning
Always disconnect power before undertaking any work on pump, cable, control box or accessories.
Handling
Always lift the pump by its handle or attach a rope or wire to the handle for lifting or lowering. Never
lift by the electrical cable, as it can easily be damaged causing dangerous electrical shorts.
Rotation
Make sure that the impeller rotates in the correct direction by tilting the pump slightly to one side and
starting up the pump for a short moment. The impeller should turn clockwise. This test is only
necessary for 3 phase pumps.
Installation of the Pump
Never place the pump on a loose or soft bottom. It could sink in and water will not reach the impeller.
Install pump on solid bottom or hang pump by a wire. If pump is hung by a wire, it will have to be
restricted from twisting during start-up. This can be done by securing the pump to one side of the sump.
Pumps equipped with a volute should always be kept 3/4 submerged for proper motor cooling. Stops
and starts should not exceed 10 times per hour. Make sure to size pump accordingly to sump size and
water in-flow.
Liquid Temperature
The temperature of the water is not to exceed 104° F. Contact the factory for high temperature
application; high temperature models are fitted to withstand temperatures of 190° F.
8
Depth of Submergence
Maximum depth is 65 feet.
Control
Always mount control panel in a vertical position and in a dry area above ground near pump. If outdoor
installation is applicable, make sure suitable control panel enclosure is used. (NEMA 4X enclosures are
provided with the Oil-Minder® control.)
Cold Weather
Pump cannot freeze as long as it is running or is fully submerged in water. If it is removed from the
liquid, empty the pump, clean and dry it. Store it in a space where the temperature is above 32° F (0°
Celsius). If the pump has been exposed to freezing temperatures, let it thaw slowly before it is started
again. Never thaw using flame or similar methods, as o-rings and other materials may be damaged.
Overhaul
General
If the pump or the mechanical seals are new, the oil seal should be checked after 2 days or 48 hours of
operation. After the initial inspection, a periodic maintenance check every 1000 hours of winning will
suffice if pump is used in relatively clean water. If the liquid being pumped is very dirty or laden with
abrasive material, the pump should be checked every 500 hours. When inspecting the oil in the oil
housing, make sure that no water is present. Change the o-ring under the inspection plug after each
inspection.
Mechanical Seal Inspection
Remove the oil inspection plug located on the side of the volute or on top of pump. Tilt the pump so
that some oil is drained. If the color of the oil is light yellow-gray (milkish in appearance) or if there is a
noticeable trace of water, the lower mechanical seal and seal ring should be inspected/replaced and the
oil replaced. Check that the oil housing contains the correct quantity of oil. Check oil again after 15
hours. Repeat the above steps. Use oil as specified under "recommended lubrication," below. When
installing mechanical seals, make sure a sleeve is used and that the shaft is well lubricated with the same
oil as used in the oil housing or motor housing (oil filled motors use transformer oil).
Recommended Lubrication
1. For oil-filled motors use transformer oil Grade 10 e.g. Esso univolt 62, shell Diala B or an equivalent
grade.
2. The seal chamber pumps should be filled with any good quality hydraulic oil, viscosity 10W40 e.g.
Esso Extra, Texaco Havoline Five Star, Mobil DTE, or equivalent.
Inspection of Hydraulic Parts
The pump housing (volute) and the impeller should be visually inspected every time an oil and stator
inspection is made. Change parts if excessive wear has occurred or if performance of pump has dropped
off.
Note: If impeller is worn and needs replacing, always install a new oil lip seal and mechanical seal at
the same time.
9
Care and Maintenance
Safety Precautions
Before starting work on the Oil-Minder® System make sure that the system is isolated
from the power supply and cannot be energized.
Inspection
Regular inspection and preventive maintenance ensure more reliable operation. The
system is designed to withstand water, oil, and moisture and requires minimal
maintenance. Stancor recommends that the probe and connecting bracket be cleaned of
any debris, calcium or iron deposits once every year (more frequently under severe
conditions) and that the float switch is turned on to check pump operation during normal
maintenance or every six months.
1. To clean probe use alcohol and an abrasive pad or steel wool.
2. To clean connecting bracket use a rag and alcohol.
Remove all debris or iron deposits so as to prevent the possibility of shorting the probe.
10
Performance & Operating Sequence
Stancor's Oil-Minder® product is intended to control a submersible pump for the purpose of maintaining
sump pit liquid levels. The unique features offered by the Oil-Minder® System are the ability to sense
oil floating on the top of the water, and preventing the pump from ejecting this oil into sewers, rivers,
and waterways. In addition, the system provides for separate alarms in the event of an oil spill, high
liquid level condition, or overcurrent condition due to a pump fault.
The main float will rise (close) when the liquid level increases in the sump pit. The main pump relay
should close to allow the pump to discharge the liquid as long as the oil sensor has a resistance to ground
lower than the set point (i.e., the oil sensor is in conductive water and normal operation is allowed). The
pump relay will open when the liquid level drops below the oil sensor probe tip (pump off). There is a
one (1) second time delay after the liquid level drops below the oil sensor probe tip. At this point, the
oil sensor probe voltage drops from 5VDC to 15 millivolts DC until the "pump-on" float rises again, at
which point the oil sensor input voltage returns to 5VDC. The 15 millivolt input greatly reduced the
potential field and subsequent metal ion exchange, thus preventing build up of foreign matter on the
probe surface.
If either float is closed, and the oil sensor measures a higher resistance than its set point, the pump is
disabled and the oil LED, audible alarm, and remote alarm relay are energized. This failure condition is
non-latching, and is automatically cleared by returning the oil sensor to a conductive fluid, or by
lowering the floats.
Other system features include overload protection and high level liquid alarming.
The overload feature measures the motor current to determine if a locked rotor or other high-current
condition exists. The maximum acceptable normal running amperage is user selected on the product
faceplate. The NEMA trip class 5 overload curve is followed for tripping in the event that the motor
amperage exceeds its trip point. In the event of an overload; the motor is disabled, while the overload
LED, audible alarm, and the remote relay are energized. Automatic reset operation is configured via a
p.c. board jumper header. Systems configured in manual reset will allow a reset only after a loss of
power or by depressing the reset button. Systems configured in automatic mode will reset after 10
minutes. The 10 minute restart may be bypassed by removing and reapplying power or by depressing
the reset button. Automatic mode is visually indicated by a flashing overload LED, while manual mode
will have a solid overload LED.
The high level liquid alarm is enabled by an additional float placed at a level in the pit above normal
acceptable liquid levels. The rising of this float (closing) will cause the controller to energize the
audible alarm, remote alarm relay, and the high level LED. The high level alarm will only be deenergized after the high level float drops to its normal state (open). The high level liquid alarm will not
disable the pump motor from normal operation.
An additional silence alarm button is provided to de-energize the audible alarm for the convenience of
maintenance personnel. Depressing this button will not clear any fault, but merely silence the alarm for
5 minutes. If a fault is removed and returns, the audible alarm will reenergize as expected.
11
The Oil-Minder® System is available standard with a 1/2 horsepower, submersible pump
that is prewired with a National Electrical Manufacturers Association (NEMA) 4X
control panel.
Installation is as follows:
1. The pump is set in the base of the elevator pit. (The pump is equipped with its own
intake stand and, therefore, does not need external support.)
2. The junction box is secured to the wall in a convenient location, usually near the
pump, with four mounting screws.
3. The control panel is secured to the wall in a convenient location with four mounting
screws, consistent with code requirements.
4. Using 8-pin quick connect cable (supplied with single phase full feature systems),
interconnect the junction box and control panel. Use 2" watertight conduit
according to NEC requirements, for the interconnection. Additional 8-pin cable
lengths are available. Please consult your factory representative.
5. The electrical cord from the panel is plugged into the standard outlet, thereby
activating the pump and control.
The system is designed to withstand water, oil and moisture and requires minimal
maintenance. Stancor recommends only that the probe is cleaned of any debris,
calcium or iron deposits once every year (more frequently under sever conditions) and
that the float switch is turned on to check pump operation during normal elevator
maintenance, or every six months.
The Oil-Minder® System includes high-level alarms and remote monitoring circuits
The standard elevator Oil-Minder® system is supplied as a complete package as detailed
on the following page. The illustrated package is shown with our most popular pump, the
SE-50. However, the same physical layout applied to the full range of pumps available
through your Stancor dealer.
12
Typical Stancor Simplex
Multi-Option
Oil-Minder® System
1. Stancor Model SE-50 submersible effluent pump .5 HP, 115 volt, 3600 RPM, 2" discharge
connection.
2. Stancor Oil-Minder® 115V, 1Ø control system with built-in audible and visual alarm when pump does
not run due to oil in pit or high liquid or high amperage condition. Provide silencing button for
audible alarm built into panel. Panel shall have two contacts for a remote alarm location (one each
for oil and high water or amperage alert). Junction box will be provided with multi-pin connector and
cord in lengths as required, 25 ft. standard, optional 25 ft. increments.
3. Junction box will be provided with multi-pin connector and cord in lengths as required; 25 ft. is
standard, optional 25 ft. increments available up to 250 ft.
4. All buried pump pressure discharge piping shall be protected with tapecoat CT corrosion protection
tape.
5. Pump cable, probe cable, high liquid alarm cable, and pump "on" float cable (16 ft. length standard).
6. High liquid alarm float with clamp device to mount to pump discharge piping.
7. Pump On float.
8. Power cord and molded ground plug (6 ft. length).
ITEMS 1, 2, 3, 5, 6, 7 AND 8 ARE PROVIDED BY STANCOR AS A STANDARD PACKAGE.
13
Elevator Pit “Full Feature” Wiring – 115V
Color Code
Oil-Minder® Control Box
14
Oil-Minder® Control Field Wiring
“Jr”, Direct Wire, Transformer Vault Type
15
Full Feature OM-300 Vertical Style Float & Probe Wiring
16
Direct Wire Version
OM-300 Vertical Style Float & Probe Wiring
17
SE-40/SE-50 Oil-Minder® System Test Procedure
with RMS and High Level Alarm
WARNING: Risk of electric shock - this pump is supplied with a grounding conductor and
grounding-type attachment plug. To reduce the risk of electric shock, be certain that it is
connected only to a properly grounded, grounding-type receptacle.
ATTENTION: When required by local code, electrical connection shall be made using UL
listed rigid metal conduit with water tight seal.
CAUTION: This control is equipped with an automatic reset overload relay, pump motor may
start automatically when the relay is in the automatic reset position.
CAUTION: This pump has been evaluated for water use only. Read all instructions before
installing the system.
Pump Test
Verify Oil-Minder's® sensitivity setting: set at 5.
Insert electrical plug into wall outlet. Power indicator will light.
Short Oil-Minder® probe to pump housing with screw driver or shorting jumper, (no water in pit).
With short in place, manually raise "Pump On" float. Pump should turn on. "Pump Run" indicator
will light.
5. Lower float. Pump will continue to run.
6. Remove short. Pump will then turn off.
1.
2.
3.
4.
Oil Fault/RMS Test
1. Manually raise "Pump On" float with NO short on probe. The RMS System should then be
activated. "Oil Fault" indicator will light. Alarm will sound.
2. To silence alarm, depress "Silence" button.
3. Lower float. RMS warning system will then turn off.
High Alarm/RMS Test
1. Manually raise alarm float. The high level alarm will sound and the RMS system will activate
("High Level" indicator will light).
2. Depress reset button to reset the system.
3. Lower alarm float.
Overload Setting
1. Verify that Overload Amp setting is set at 5 for SE-40 and 8 for SE-50 pump.
18
Pump Control Diagnostics Test
(Reset Button Method)
CAUTION!!
THE FOLLOWING TEST SHOULD ONLY BE PERFORMED IF
THERE IS NO CHANCE OF PUMPING OIL. THIS TEST IS A
DIAGNOSTIC TEST AND WILL CAUSE THE PUMP TO RUN
REGARDLESS IF OIL IS PRESENT OR NOT.
Power up the oil-minder®, the power on led will light up green; depress the reset button
and continue to hold, oil fault, high level and overload led will light up red. After 5
seconds the pump run led will light up green and power will be supplied to pump for a 5
second interval; if oil, air or dirt (dirt, calcium or iron deposits on the probe) is present
the pump will still be powered up for 5 seconds, however, the oil fault led will light up
(RED). This new feature gives maintenance personnel the ability to quickly check the
functioning of the pump, oil- minder and control. Float switches will still have to be
tested manually for assurance of their integrity.
See following page for graphics detail of this procedure.
19
Stancor Oil-Minder® Version 2.01 with Test Mode
®
1 - POWER UP THE OIL-MINDER , THE
POWER ON LED WILL LIGHT UP GREEN
2 - DEPRESS THE RESET BUTTON AND
CONTINUE TO HOLD. OIL FAULT, HIGH
LEVEL AND OVERLOAD LED WILL LIGHT
UP RED.
3 - AFTER 5 SECONDS (CONTINUE TO
DEPRESS RESET BUTTON) THE PUMP RUN
LED WILL LIGHT UP GREEP. IF WATER IS
PRESENT POWER WILL BE SUPPLIED TO
PUMP FOR A 5 SECOND INTERVAL.
4 - IF OIL IS PRESENT THE PUMP WILL STILL
BE POWERED UP FOR 5 SECONDS,
HOWEVER, THE OIL FAULT LED WILL
LIGHT UP RED
20
Oil-Minder® System Test Procedure
with RMS & High Level Alarm
(OM-300 vertical float version)
Pump Run Test (hands on method)
Verify Oil-Minder’s® sensitivity setting: set at 5.
Verify proper incoming power connection. Power indicator will light.
Short Oil-Minder® probe to pump housing with screw driver or jumper wire.
With short (jumper wire) in place, manually raise stainless steel ball float closest to the bottom of
the probe, raise float (1/2”). Pump should turn on. Pump run indicator will light.
5. Lower float. Pump will continue to run.
6. Remove short. Pump will then turn off.
1.
2.
3.
4.
Oil Fault/RMS Test
1. Manually raise stainless steel ball float closest to the bottom of the probe, raise float (1/2”) with
NO short on probe. The RMS system should then be activated. Oil fault indicator will light.
Alarm will sound (where applicable).
2. To silence alarm, depress silence button.
3. Lower float. RMS warning system will then turn off.
High Alarm/RMS Test
1. Manually raise stainless steel ball float at the top of the probe assembly, raise float (1/2”). The
high level alarm will sound (where applicable) and the RMS system will activate. (High level
indicator will light).
2. Depress reset button to reset the system.
3. Lower alarm float.
21
Stancor Duplex Oil-Minder® System
The Stancor Duplex Oil-Minder® System provides for all the safety and operational features of the
Simplex System, while allowing two pumps to operate together in the same sump.
The Duplex Oil-Minder® Control alternates each pump upon start-up, assuring equal run time and wear.
In the event of heavy inflow, both pumps will operate together until the water level recedes and both
pumps are deactivated. The high level/lag pump float will activate an alarm if the water condition
continues after a pre-set time point is reached (set for 6 seconds, adjustable between 6 seconds and 10
minutes). An alarm and separate diagnostic LED lights are provided for oil alert, high water, and high
amperage (pump overload) conditions. Remote monitoring relays are also provided for alert conditions.
A silence and reset switch clears the alarm mode once a fault is addressed. In addition, there are LED
lights to "power" the system and to indicate "pump 1" and "pump 2" activation. As with all Stancor OilMinder® Systems, oil is contained in the sump while water is pumped on a fully automatic basis,
assuring protection of the environment, personnel, and valuable equipment-even during an alarm
condition.
The standard Stancor Duplex Oil-Minder® System includes two SE-50 pumps (115v or 230v).
However, Stancor can provide systems with any of its wide range of pumps up to 75 HP, with electrical
provisions that meet the customer's requirements.
22
Typical Stancor Duplex Oil-Minder® System
23
Single Phase Duplex Wiring (Typical)
24
Three Phase Simplex Wiring (Typical)
25
Three Phase Duplex Wiring (Typical)
26
Simplex & Duplex Large Enclosure Dimensions
(Standard Systems)
27
Oil-Minder® Control Board Specifications
and Oil Sensitivity Settings
Inputs
1. Oil sense input. Ground referenced 50K-200K ohms, 5VDC source.
2. Motor overload current measurement. Isolated from power system.
Measurement range 3-100 amps. Trip class 5 (fixed).
3. Motor overload set point adjustment pot. Range 5-15 amps (linear adjustment).
4. Main float input (>2K ohms = open; <300 ohm = closed; 12VDC source).
5. High alarm float input (>2K ohms = open; <300 ohms = closed; 12VDC source).
6. Oil sensor sensitivity adjustment pot (range 1-10; 1=50K ohms; 10=200K ohms).
7. Automatic /Manual overload reset selector (header Jumper on p.c. board).
8. System reset button (p.c. button actuated from side of enclosure).
Allows reset of system after and overload condition.
9. Alarm silence button (p.c. button actuated from side of enclosure).
Outputs
1.
2.
3.
4.
5.
6.
7.
8.
9.
Motor/pump control relay (Rated 1Hp@115VAC; 2Hp@230VAC).
Audible alarm output (12VDC, 300mA. Two pin locking header on p.c. board).
Alarm relay output (dry N.O. contacts rated 5amps@115/230VAC general purpose).
Power LED (green).
Oil alarm LED (red).
Overload LED (red).
High level alarm LED (red).
Pump run LED (green).
Oil sensor output, 15 millivolts at pump motor shutdown; 1 second time delay when liquid level
reaches probe tip off point.
Terminal Blocks: U.L. recognized 300VAC, 20 amps. Three side barrier with capture/pressure plate;
combination head.
Input: Standard: 90-125VAC (1 phase, 50-60Hz)
Optional: 180-240VAC (1 phase, 50-60Hz)
28
Stancor Oil-Minder® Controller Board Specifications
Inputs/Oil Sensitivity Settings
The oil sensor has a resistance to ground lower than the set point (i.e., the oil sensor is in conductive
water and normal operation is allowed). The pump relay will open when the liquid level drops below
the oil sensor probe tip (pump off). There is a one (1) second time delay after the liquid level drops
below the oil sensor probe tip. At this point, the oil sensor probe voltage drops from 5VDC to 15
millivolts DC until the "pump-on" float rises again, at which point the oil sensor input voltage returns to
5VDC. The 15 millivolt input greatly reduces the potential field and subsequent metal ion exchange,
thus preventing build up of foreign matter on the probe surface.
Oil Sensitivity Settings
Sensitivity position "1" = 50k ohms
Sensitivity position "10" = 200k ohms
Water = low resistance
Oil = high resistance
Sensitivity position "1" = the solution must be very conductive to pump (all water)
Sensitivity position "10" = the solution does not have to be very conductive to pump (very oily/water
mix)
Sensitivity position "1" = the Oil Minder is very sensitive to any oil
Sensitivity position "10" = the Oil Minder isn't very sensitive to oil
29
Troubleshooting
Inspecting Motor Cable
Carefully inspect the outer shield and the wire endings. If the outer shield has been damaged, water can
enter the pump through the core. The cable should never be stretched by force and the pump never lifted
by the motor cable. This could severely damage the cable and the cable glands in the cable holder.
Perform continuity test on each lead.
Detailed Overhaul
A complete overhaul should be made if water has been detected in the stator housing, or if the pump has
been in daily use for a year. The intervals can be increased if the pump has been permanently installed
as a sump pump with automatic controls. Dismantle the pump completely, replace damaged or worn
parts with new original parts. Clean all surfaces and check for cracks or damage. If water is present in
stator housing and/or in oil chamber, replace mechanical seals, o-rings, oil seal and bearings.
Do Not ...






Lift the pump by the motor electrical cable
Run the pump dry
Attempt electrical repairs
Run the pump if the motor is not at least 3/4 submerged for long periods of time
Install the pump on soft or loose ground
Run the pump backwards
Troubleshooting
1. Pump Will Not Start
The cause could be wrong voltage, no power, damaged cable, bad fuse, tripped circuit breaker,
thermal contactor has opened due to overheated motor caused by locked rotor or wrong connections,
or the thermal cut out switch has not reset (5 minutes).
If the pump does not start from new, then the seal has possibly stuck due to the length of time it has
been standing since it was manufactured. In this case, remove bottom strainer and turn the impeller
nut clockwise with a pair of pliers. This will release the initial friction on the seal and once the power
is connected will allow the pump to work.
Note: if fitting an extension lead, a QUALIFIED ELECTRICIAN should be consulted to ensure
correct rating is provided.
2. Low Capacity or Low Head
The cause can be clogged passages, e.g. the strainer, worn impeller or pump housing, broken pipes,
damaged pipes, damaged or kinked hoses, discharge pipe or hose too long or too narrow, or wrong
rotation (3 phase only).
 Insufficient liquid in sump
 Strainer blocked
 Impeller blocked
 Impeller damaged
 Entrained air present
 Excessive back pressure
30
3. Water in Stator Housing
If water is found in the stator housing, the pump must be dismantled for a complete overhaul and the
stator dried out. Probable causes: damaged, worn shaft seals or bad o-rings (check oil housing for
water contamination) - change seals; damaged cable or cable gland (change).
4. Water in the Oil Housing
Problem can be: worn or damaged oil lipseal, mechanical seals or o-rings. Change if needed.
Leaking inspection plug or oil housing cover: change elastomers.
If Pump Does Not Start
1. Check power supply, test voltage and amps.
2. Check circuit breaker, fuse and switch.
3. Check cable, contactor and connections. Test for continuity. Check stator for open or grounded
stator coil.
4. Make sure that the impeller is clear of obstructions and is rotating freely.
IMPORTANT!
When trouble shooting always follow local, state and federal regulations regarding
procedures and safety. If the pump still does not start, please contact closest
available recommended repair shop.
Oil-Minder® Troubleshooting Chart
Symptom
Pump does not run
Possible Cause
Action
Overload tripped
Defective float or probe
Defective Control
Reset button
Replace as necessary
Replace control
Check out electrical system for loose
connections
Power supply failure
Loose connection in pump
Check and tighten connections
or control panel
Pump shuts off before water
Adjust sensor setting upward by 1
Sensor setting set too low
level reaches tip of probe
increment; retest for proper shut off
Steady in-flow of oil
Repair defective source of oil leak
Substantial quantity of oil
Remove oil, repair defective source
RMS trips frequently
in sump
Oil-filled pump motor
Repair or replace defective pump
could be leaking
Improper overload setting Verify setting
Debris in volute
Remove debris
Jammed impeller
Inspect and remove debris from impeller
Water in motor
Repair or replace pump
Overload trips frequently
Inspect external cable and replace if worn or
Wet or damaged wiring
damaged
Inspect/dry out control. Tighten cover
Water in control
clasp. Replace if shorted.
For further assistance, consult the Stancor Product Service Department.
31
Troubleshooting
Trouble
Does not start.
Starts, but
immediately
stops.
Operates, but
stops after a
while.
Cause
(1) Power failure
(2) Large discrepancy power source and voltage
(3) Significant drop in voltage
(4) Motor phase malfunction
(5) Electric circuit connection faulty
(6) Faulty connection of control circuit
(7) Fuse blown
(8) Faulty magnetic switch
(9) Water is not at level indicated by Float
(10) Float is not in appropriate level
(11) Float effective
(12) Short circuit breaker is functioning
(13) Foreign matter clogging pump
(14) Motor burned out
(15) Motor bearing broken
(1) Prolonged dry operation has activated motor
protector and caused pump to stop
(2) High liquid temperature has activated motor
protector and caused pump to stop
(3) Reverse rotation
(1) Reverse rotation
(2) Significant drop in voltage
Does not pump.
Inadequate
volume.
(3) Operating a 60Hz pump on 50Hz
(4) Discharge head is high
(5) Large piping loss
(6) Low operating water level causes air suction
(7) Leaking from discharge piping
(8) Clogging of discharge piping
(9) Foreign matter in suction inlet
(10) Foreign matter clogging pump
(11) Worn impeller
(1) Unbalanced current and voltage
(2) Significant voltage drop
Over current
Pump vibrates;
excessive
operating noise.
32
(3) Motor phase malfunction
(4) Operating 50Hz pump on 60Hz
(5) Reverse rotation
(6) Foreign matter clogging pump
(7) Motor bearing is worn or damaged
(1) Insufficient pumping
(2) Pump clogged with foreign matter
(3) Piping resonates
(4) Gate valve is closed too far
Remedy
(1)~(3) Contact electric power company and
devise counter-measures
(4) Inspect electric circuit
(5) Correct wiring
(6) Inspect connections and magnetic switch
(7) Replace with correct type of fuse
(8) Replace with correct one
(9) Raise water level
(10) Adjust position of float
(11) Repair or replace
(12) Repair location of short circuit
(13) Remove foreign matter
(14) Repair or replace
(15) Repair or replace
(1)Raise stop water level
(2) Lower liquid temperature
(3) Correct rotation
(1) Correct rotation (see Operation)
(2) Contact electric power company and
devise counter-measures
(3) Check nameplate
(4) Recalculate and adjust
(5) Recalculate and adjust
(6)Raise water level or lower pump
(7) Inspect, repair
(8) Remove foreign matter
(9) Remove foreign matter
(10) Remove foreign matter
(11) Replace impeller
(1) Contact electric power company and
devise counter-measure
(2) Contact electric power company and
devise counter-measure
(3) Inspect connections and magnetic switch
(4) Check nameplate
(5) Switch motor leads (3 phase only)
(6) Remove foreign matter
(7) Replace bearing
(1) Check rotation (3 phase only)
(2) Disassemble and remove foreign matter
(3) Improve piping
(4) Open gate valve
Pump Service and Repair
Operation
1. Before starting the pump
a) After completing installation, measure the insulation resistance again as described in Installation.
b) Check water level.
If the pump is operated continuously for an extended period of time in a dry condition or at the lowest
water level, the motor protector will be activated. Constant repetition of this action will shorten pump
service life. Do not start the pump again in such a situation until after the motor has completely
cooled.
2. Test Operation
Non-automatic pump
Automatic pump
a) Turn the operating switch on and off a couple of times to check for normal pump start.
Floating switch must be raised for the pump to start.
b) Next, check direction of rotation. If discharge volume is low or unusual sounds are heard when the pump
is operating, rotation has been reversed. When this happens, reverse two of the wires.
Maintenance
Check pressure, output, voltage, current and other specifications. Unusual readings may indicate. Refer
to Troubleshooting and correct as soon as possible.
1. Daily Inspections
Check current and ammeter fluctuation daily. If ammeter fluctuation is great, even though within the limits of
pump rating, foreign matter may be clogging the pump. If the quantity of liquid discharged falls suddenly,
foreign matter may be blocking the suction inlet.
2. Regular inspections
a. Monthly inspections
Measure the insulation resistance. The value should be more than 1M ohm. If resistance starts to fall
rapidly even with an initial indication of over 1M ohm, this may be an indication of trouble and repair
work is required.
b. Annual inspections
To prolong the service life of the mechanical seal by replacing the oil in the mechanical seal chamber once
a year. Water mixed the oil or cloudy textures are indications of a defective mechanical seal requiring
replacement. When replacing the oil, lay the pump on its side with filler plug on top. Inject suitable
amount of turbine oil No. 32 (ISO VG-32)
c. Inspections at 3-5 year intervals
Conduct an overhaul of the pump. These intervals will preclude the possibility of future trouble.
3. Parts that will need to be replaced
Replace the appropriate part when the following conditions are apparent.
Replaceable part
Mechanical seal
Oil filler plug gasket
Lubricating oil
O-ring
Whenever oil in
Whenever oil is
Whenever
Whenever pump is
Replacement guide
mechanical seal
replaced or inspected
clouded or dirty
overhauled
chamber is clouded
Frequency
Annually
A half yearly
A half yearly
Annually
Note: above replacement schedule is based on normal operating conditions.
Motor output
0.4HP
0.5HP
1HP
2HP
3HP
5HP
7.5HP
Mechanical seal
12 Ø
19.875 (3/4”) Ø
25 Ø
Oil seal
12 Ø x 24 Ø x 7t
18 Ø x 35 Ø x 7t
Oil filler plug gasket
(inner diameter) x (outer diameter) x (thickness) = 8.5 Ø x 13 Ø x 0.8 t PE washer
Lubricating oil
120 cc
220 cc
500 cc
600 cc
(turbine oil #32)
33
Pump Service and Repair
Disassembly and Assembly
1. Disassembly
When disassembling pump, have a piece of cardboard or wooden board ready to place the different parts on as
you work. Do not pile parts on top of each other. They should be laid out nearly in rows. The “O” ring and
gasket cannot be used again once they are removed. Have replacement parts ready. Disassemble in the
following order, referring to the sectional view.
Be sure to cut off power source before beginning disassembly.
(1) Remove pump casing bolts, raise the motor section and remove pump casing.
(2) Remove shaft head bolt and impeller.
(3) Remove oil filler plug and drain lubricating oil.
(4) Remove intermediate casing bolts and intermediate oil chamber.
(Remember that any lubricating oil remaining in the mechanical seal chamber will flow out).
(5) Carefully remove mechanical seal, taking care not to scratch sliding surface or motor shaft.
2. Assembly
Reassemble in reverse order of disassembly
Be careful of the following points.
(1) During re-assembly, rotate the impeller by hand and check for smooth rotation. If rotation is not smooth,
perform steps (3) through (5) again.
(2) Upon completion of re-assembly step (1) rotate the impeller by hand from the suction inlet and check that
it rotates smoothly without touching the suction cover before operating the pump.
Please obtain “O” rings, shaft seals and other parts from pump dealer. The table of
dimensions is given in “Maintenance”.
Nameplate format
34
Pump F.L.A.
Model
Item
HP
HZ
SE-40
0.4HP
60Hz
SE/SS-50
0.5HP
60Hz
Phase
1 3
v
v
v
v
v
v
v
1HP
v
v
v
v
v
v
SE/SV/SS-100
Voltage
115V 230V 460V 575V
60Hz
v
v
v
v
v
v
v
v
v
v
SE/SV/SS-200
2HP
60Hz
SE/SV/SS
SE/SV/SS-300
SE/SV/SS-500
SE/SV/SS-750
3HP
5HP
7.5HP
v
v
v
v
v
v
v
v
v
v
v
v
v
v
60Hz
60Hz
60Hz
v
v
v
v
v
v
v
v
v
v
v
4.6
2.3
8
4
2
1
12
6
3
1.5
1.2
12
6
3
2.3
9
4.3
3.5
15
7.5
5.7
21
10.5
8
4.6
2.3
8
4
12
6
12
SE/SV/SS-100A
1HP
60Hz
SE/SV/SS-200A
2HP
60Hz
v
v
v
v
v
v
v
SB
SB-12
0.2HP
60Hz
v
v
2.1
SL
SL-75
0.75HP
60Hz
v
v
5
SSD-75
0.75HP
60Hz
v
v
v
SSD-100
1HP
60Hz
v
v
v
v
v
11/5.5/4/2
SSD-200
2HP
60Hz
v
v
v
v
v
20/10/6/3
SSS-75
0.75HP
60Hz
v
v
v
v
v
5/3/1.5/0.8
SSS-100
1HP
60Hz
v
v
v
v
v
10/5/3/1.5
AHS-05
0.5HP
60Hz
v
v
v
AHS-10
1HP
60Hz
v
v
v
v
v
11/6.4/3.5/1.7
AHS-10 HH
1HP
60Hz
v
v
v
v
v
12/6/3.5/1.7
AHS-25 HH
2.5HP
60Hz
v
v
v
v
13/6.6/3.5
SE-40A
SE/SS-50A
SSD
SSS
AHS
0.4HP
0.5HP
60Hz
60Hz
v
Amp
v
v
v
v
v
v
6/3
6/3.2
35
Type
A
A1
A2
A3
SE-40
231 72
132
NA
SE-50
231 72
132
NA
SE-100
231 72
132
NA
*SE/SV-100 312 82
183
101
SE/SV-200
390 103 235
151
SE/SV-300
390 103 235
151
SE/SV-500
470 110 257
170
SE/SV-750
470 110 257
170
Note: *SE/SV-100 : Elbow Type (Optional)
36
D
145
145
145
163
210
210
218
218
D1
66
66
66
76
105
105
98
98
D2
78
78
78
87
105
105
120
120
H
396
421
496
494
532
552
633
673
Dimensions (mm)
H1
H2
H3
266
110
110
291
110
110
339
110
110
351
124
156
400
150
152
420
150
152
468
160
206
508
160
206
Spare Parts Diagram
“Full Feature”
37
Spare Parts Diagram
“JR/Direct Wire”
38
Stancor Pump Models SE/SV
Material Construction
SE-40 - 100
SE/SV-200 - 750
39
40
Notes:
41
Stancor, Inc.
515 Fan Hill Road • Monroe, CT 06468
203-268-7513 • Fax 203-268-7958 • www.stancorpumps.com
42