Oil-Minder®II Control System
STANCOR
The Stancor Oil-Minder Control System, when combined with a pump,
allows water to be automatically pumped from elevator pits in
accordance with ASME A17.1 without danger of ejecting potentially
harmful oily substances into sewers, rivers and waterways. The product
is engineered for efficient and trouble free pumping, even under the most
severe conditions. The patented Oil-Minder system has a proven record
of protecting valuable equipment and the environment while being
extremely cost effective. This multi-option system can also be used in
any variety of applications where oil must be contained.
Features
• NEMA 4x weathertight corrosion resistant polycarbonate enclosures
• Stainless steel sensor probe
• Single direct plug-in power source for efficient, economical hook-up
• Alarm, light, and remote monitoring circuit for hydraulic oil alert
• Complete factory packaging insures quality of entire control and
pump system
• Patented - Pat. #4,715,785, #4,752,188, #6,203,281
• Oil-Minder system can be combined with a variety of different
pumps and valves to meet non-standard requirements
• Choice of: 115v or 220v (1 phase) OR 230v/460v/575v (3 phase)
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.
V2
STANCOR OPERATOR’S MANUAL
Elevator Pit
|
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.
Special attention should be directed to the following
procedures:
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.
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.
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, consistant with code requirements.
4. Using 8-pin quick connect cable (supplied with single phase
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 severe 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 applies to the full range of pumps available through
your Stancor dealer.
1. Stancor Model SE-50 submersible effluent pump .5 HP, 115 volt, 3600
RPM, 2” discharge connection
2. Stancor check valve
3. Stancor Oil-Minder 115V, 1Ø control system with optional built in
audible and visual alarm when pump does not run due to oil in pit
or high liquid alarm. Provide silencing button for audible alarm
built into panel. Panel shall have additional contact for a remote
alarm location. Provide reset button to reset system.
4. Junction box will be provided with multi-pin connector and cord in
lengths as required; 25 ft. is standard, optional 25 ft. increments
available.
5. All buried pump pressure discharge piping shall be protected with
tapecoat CT corrosion protection tape.
6. Oil-Minder power cable, probe cable and high liquid alarm cable
7. High liquid alarm float with clamp device to mount to pump
discharge piping
8. Pump On float
ITEMS 1, 2, 3, 4, 6, 7 & 8 PROVIDED BY STANCOR
Sump Pump Diagram -
Hydraulic Elevator
Diagram
SE-40/SE-50 Oil-Minder System Test Procedure
with RMS and High Level Alarm
CAUTION: Before energizing Oil-Minder System, open control box and
remove packing material; make sure all Oil-Minder Modules are seated
and have not come ajar due to rough handling during shipping.
Pump Test
1. Verify Oil-Minder’s sensitivity setting: set at 5.
2. Insert electrical plug into wall outlet. Power indicator will light.
3. Short Oil-Minder probe to pump housing with screw driver
or shorting jumper
4. 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.
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 SE40
and 8 for SE-50 pump.
Stancor Oil Minder Controller Board Specifications
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 ohms = 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 an overload condition.
9. Alarm silence button. (P.c. button actuated from side of enclosure).
Outputs
1. Motor/pump control relay. (Rated 1Hp@115VAC; 2Hp@230VAC.)
2. Audible alarm output. (12VDC, 30mA. Two pin locking header on
p.c. board.)
3. Alarm relay output. (Dry N.O. contacts rated 5amps@115/230VAC
general purpose.)
4. Power LED (green).
5. Oil alarm LED (red).
6. Overload LED (red).
7. High level alarm LED (red).
8. Pump Run LED (green).
9. 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)
Performance/Operating Specifications
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 reduces 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 alarm 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 de-energized 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.
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.
Oil-Minder Trouble Shooting Chart
Symptom Possible Cause Action
Pump does Overload tripped Reset button
not run Defective float or probe Replace as necessary
Defective control Replace control
Power supply failure Check out electrical
system for loose
connections
Loose connection in Check and tighten
pump or control panel connections
Pump shuts off Sensor setting set Adjust sensor setting
before water level to low upward by 1
reaches tip of probe increment; retest for
proper shut off
RMS trips Steady in-flow of oil Repair defective
frequently source of oil leak
Substantial quantity Remove oil, repair
of oil in sump defective source
Oil-filled pump motor Repair or replace
could be leaking defective pump
Overload trips Improper overload Verify setting
frequently setting
Debris in volute Remove debris
Jammed impeller Inspect and remove
debris from impeller
Water in motor Repair or replace
pump
Wet or damaged wiring Inspect external cable
and replace if worn
or damaged
Water in control Inspect/dry out
control.
Tighten cover clasp.
Replace if shorted.
18 For further assistance, consult the Stancor Product Service Department
Pump Installation & 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
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
19
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 degrees Fahrenheit.
Contact the factory for high temperature application; high temperature
models are fitted to withstand temperatures of 190º F.
Depth of Submergence
Maximum depth is 65 ft.
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 32º F (0º
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.
20
Overhaul
General
If the pump or the mechanical seals are new, the oil should be checked
after 2 days or 48 hours of operation. After the initial inspection, a
periodic maintenance check every 1000 hours of running 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 st the same time.
21
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, orings,
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
Trouble-shooting
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
22 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 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
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 orings.
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.