YEOMANS 9100 Series User manual

INSTRUCTION 9000 – MODU-CAB 1 1/31/07
SUBMERSIBLE PUMPS
INSTALLATION, OPERATION
AND MAINTENANCE MANUAL
YEOMANS SERIES 9100 SUBMERSIBLE PUMPS
WITH SINGLE RAIL QUICK LIFT OR
DUAL RAIL EASY-LIFT®GUIDE RAIL SYSTEM
TYPICAL PUMP INSTALLATION
YEOMANS PUMP
3905 ENTERPRISE COURT
AURORA, IL 60504 USA

INSTRUCTION 9000 – MODU-CAB 2 1/31/07
Table of Contents
SECTION A-GENERAL
1) Purpose and Importance of Manual ………………………………………………………… 3
2) Special Precautions……………………………………………………………………………. 3
3) Receiving Inspection-Shortages……………………………………………………………... 3
4) Preservation and Storage…………………………………………………………………….. 3
5) Handling………………………………………………………………………………………… 3
6) CAUTION……………………………………………………………………………………….. 3
7) Motor and Mechanical Seals…………………………………………………………………. 3
8) Electrical Leads………………………………………………………………………………… 4
9) Controls……………………………………………………………………………………….… 4
10) Accessories…………………………………………………………………………………… 4
SECTION B-INSTALLATION
PUMP ONLY (Without Quick Lift)
1) Location……………………………………………………………………………………….. 5
2)Checking Rotation…………………………………………………………………………….... 5
3) Setting and Alignment……………………………………………………………………….… 5
4) Piping………………………………………………………………………………………….… 5
PUMP WITH SINGLE RAIL QUICK LIFT
1) Location………………………………………………………………………………………….. 6
2) Checking Rotation………………………………………………………………………………. 6
3) Foundation and Guide Rail……………………………………………………………………. 6
4) Piping……………………………………………………………………………………………. 6
DRAWING - QUICK LIFT ASSEMBLY SINGLE RAIL………………………………………… 7
PUMP WITH DUAL RAIL EASY LIFT
1) Location………………………………………………………………………………………….. 8
2) Checking Rotation………………………………………………………………………………. 8
3) Foundation and Guide Pipes………………………………………………………………….. 8
4) Piping…………………………………………………………………………………………..… 8
DRAWING - EASY LIFT ASSEMBLY……………………………………………………………. 9
SECTION C-OPERATION
PUMP ONLY……………………………………………………………………………………….. 10
SINGLE AND DUAL RAIL PUMPS……………………………………………………………… 11
SECTION D-MAINTENANCE…………………………………………………………….. 12
SECTION E-DISASSEMBLY AND REASSEMBLY…………………….…………. 13
DRAWING -9100 SUBMERSIBLE PUMPS-ALL MODELS……………………… 14
SECTION F-TROUBLESHOOTING………………………………………………….…. 15-17

INSTRUCTION 9000 – MODU-CAB 3 1/31/07
SECTION A-GENERAL
1) Purpose and Importance of Manual
Your YEOMANS Submersible Pump is built to give trouble-free service. This manual is intended to instruct in its
proper installation, operation and maintenance. Strict compliance with these instructions will insure reliable
performance in wastewater service. Keep this manual handy for ready reference.
2) Special Precautions
YEOMANS cannot be responsible for any damage resulting from failure to comply with these instructions. This
pump is not to be operated at conditions or with liquids other than those stated in the original order
acknowledgment without written permission from YEOMANS CHICAGO CORPORATION.
3) Receiving Inspection--Shortages
Upon receiving shipment make sure that no damage occurred in transit and that shipment complies with the bill-
of-lading. Make note of damage or shortage on both receipt and. freight bill. Claims should be made to the
transportation company within fire (5) days.
4) Preservation and Storage
The pumps are shipped with adequate protection for transport in covered trucks, covered storage at job site,
and for a limited time between installations and start up. YEOMANS CHICAGO CORPORATION should be
notified if it is anticipated that the equipment will be exposed to extreme or extended storage conditions prior to
installation, so that shipment can be given special protection.
5) Handling
The pump and other vulnerable parts which may be subject to damage are provided with eye bolts or lifting lugs.
Be sure to use these, and above all, DO NOT LIFT PUMP BY THE ELECTRICAL POWER CABLE.
6) CAUTION
BE CAREFUL NOT TO HAVE HANDS, FEET, CLOTHING OR OTHER OBJECTS IN OR NEAR THE PUMP
SUCTION OPENING WHEN POWER IS ON!
7) Motor and Mechanical Seals
The motor is a "dry" type as opposed to one with oil filled stator housing. The only pump bearings are those in
the motor and these ball bearings are prelubricated for at least five years of service before requiring attention.
The tandem mechanical seals are housed in an oil filled reservoir. This assures lubrication of the seal faces
even when the motor is operated in air. The thermal protectors are automatic reset type for use in a normally
closed circuit and are connected in series with the holding coil of the magnetic starter. The oil filled seal
reservoir has two electrodes, which are connected to a moisture sensing circuit, which will detect any water that
may leak into the reservoir. This will indicate a faulty outer (lower) mechanical seal.
8) Electrical Leads
All leads are epoxy sealed to the cable connector. One cable (the larger) has the power leads and ground wire
and the other contains the thermal protector and moisture detector leads. Check the current and voltage
characteristics of the motor nameplate with those of the control panel. If not in agreement, notify YEOMANS
CHICAGO CORPORATION immediately. The electrical leads must be caulked at the junction box to prevent
escaping gases from entering the control panel.

INSTRUCTION 9000 – MODU-CAB 4 1/31/07
9) Controls
The control consists of a motor control panel plus liquid level sensors, alarms, and many options. The controls
must comply with different specifications, the National Electrical Code, and building codes, which vary with each
location, hence, must be detailed separately for each individual installation. The main control panel is generally
located outside of the hazardous area and can be NEMA 3R.
10) Accessories
The most common accessories are the quick lift winch and pit access doors. There are many variations in door
construction to cover different codes and specifications so; here again, they will be detailed separately. Where
necessary, aluminum doors are available; they are non-sparking and light in weight. The quick lift winch is
optional and is installed in a sleeve, which is set in the pit deck allowing it to swivel into position.

INSTRUCTION 9000 – MODU-CAB 5 1/31/07
SECTION B-INSTALLATION
PUMP ONLY (Free Standing / Without Guiderail System)
1) Location
When selecting a location for the pump, be sure to provide sufficient floor space for inspection and servicing.
Also, adequate headroom for installing and removing the pump is required. Therefore, avoid installation near
comers or under stairways.
2) Checking Rotation
It will be necessary to check the rotation of the motor and pump impeller before installing the unit into the basin.
CAUTION: BE CAREFUL NOT TO HAVE HANDS, FEET, CLOTHING, OR OTHER OBJECTS IN OR NEAR
THE PUMP SUCTION OPENING WHEN THE POWER IS ON!
The motor leads should be marked, or the starter diagram located inside the starter should be marked, or both,
so that the connections can be broken and remade with accuracy. It is important that the pump rotate in the
direction for which it was designed. Lay the pump on its side and connect the motor lead to the permanent
source of power. Quickly turn the power on and off to get the impeller spinning. Examine the impeller through
the suction opening. It should be turning counterclockwise. If not, change any two of the motor leads and
recheck. As soon as the motor is rotating in a counterclockwise direction, mark the leads and diagram as
mentioned above. The above instructions apply to three phase motors. Single phase motors cannot be reversed
in this manner, and the rotation is factory checked. Consult factory if rotation reversal is required for single-
phase motors.
3) Setting and Alignment
Before setting the pump into the basin, clean the basin and all incoming lines of any material left after project
construction and clean-up operations to eliminate destructive material which could damage the pump or motor.
The pump should be placed so the feet are set securely on the bottom of the sump and pump is plumb. The
pump should be so located in the pit that the discharge pipe will not prevent the proper seating and location of
the cover. The control switches should be so located that the rush of incoming water will not cause the control
switches to function incorrectly.
CAUTION: DO NOT LOWER PUMP BY THE ELECTRICAL CABLES.
4) Piping
In most cases the discharge piping arrangement has been established, however, there are several rules to
follow. The pipe size should be no smaller than that of the pump discharge flange. Gate and check valves
should be provided in each discharge pipe with the check valve placed between the gate valve and the pump.
The valves may be either inside or outside the pit. THE FIELD INSTALLED DISCHARGE PIPING MUST BE
SUPPORTED INDEPENDENTLY OF THE PUMP. Before connecting the pump flange, make sure the flanges
meet exactly and do not have to be forced into position.

INSTRUCTION 9000 – MODU-CAB 6 1/31/07
PUMP WITH SINGLE RAIL QUICK LIFT
1) Location
In most cases the pit size, pump elevation, piping arrangement, access door location, and other features have
been established and are shown on an installation drawing (refer to construction installation drawing). The pump
or pumps should be located in the pit on opposite side from the influent opening.
2) Checking Rotation
It will be necessary to check the rotation of the motor and pump impeller before installing the unit into the basin.
CAUTION: BE CAREFUL NOT TO HAVE HANDS, FEET, CLOTHING OR OTHER OBJECTS IN OR NEAR
THE PUMP SUCTION OPENING WHEN THE POWER IS ON!
The motor leads should be marked, or the starter diagram location inside the starter should be marked, or both,
so that the connections can be broken and remade with accuracy. It is important that the pump rotates in the
direction for which it was designed. Lay the pump on its side and connect the motor lead to the permanent
source of power. Quickly turn the power on and off to get the impeller spinning. Examine the impeller through
the suction opening. It should be turning counterclockwise. If not, change any two of the motor leads and
recheck. As soon as the motor is rotating in a counterclockwise direction, mark the leads and diagram as
mentioned above. The above instructions apply to three phase motors. Single-phase motors cannot be reversed
in this manner, and rotation is factory checked. If rotation reversal is required for single-phase motors, consult
the factory.
3) Foundation and Guide Rail
With the quick lift arrangement the pump is supported by the base elbow, which also supports the discharge
piping. The pit floor should be designed to cant' the load of the entire assembly of pump, base elbow, guide
rails, and discharge piping. The foundation bolts for the base elbow are located off the clear opening in the pit
cover as shown in the installation drawing referenced in Paragraph 1) above and should be long enough to
accommodate 1" of grout under the foot of the base elbow. The base elbow should be shimmed from the rough
concrete floor until the horizontal pipe flange is level in both directions. Then grout the base, and allow the grout
to harden before tightening the foundation bolt nuts. Referring to Figure 1 (Drawing 103785) the lower end of the
guide rail is inserted into the base elbow. The upper end of the guide rail is then attached to the pit opening;
cover angle, or whatever method has been provided. (This attachment varies with installations and is the
responsibility of the customer.) The rail has lateral support by means of pipe straps connected to the discharge
pipe. Again referring to Figure 1, slide plate (part 5) is shipped with two shoes (part 9) attached. Insert the
neoprene jam washer (part 4) as shown, then bolt the assembly to the pump discharge flange.
4) Piping
In most cases, the discharge piping arrangement has been established and a typical arrangement is shown on
the installation drawing; however, there are several rules to follow. The pipe size should be no smaller than that
of the base elbow. Gate and check valves should be provided in each discharge pipe with the check valve
placed between the gate valve and the pump. The valves may be either inside or outside the pit. The weight of
the piping is supported on the base elbow but long (10' or more) vertical sections may require lateral support
from the pit wall.

INSTRUCTION 9000 – MODU-CAB 7 1/31/07
QUICK LIFT ASSEMBLY
SINGLE RAIL
(Drawing No. 103785)
COMPONENT & MATERIALS LIST
ITEM QTY DESCRIPTIVE NAME STANDARD
MATERIAL OPTIONS
1 1 Submersible Pump & Motor Assy. Cast Iron
2 8 Hex. Head. Cap Screw Stainless Steel
3 8 Flat Washer Stainless Steel
4 1 Jam Washer Neoprene
5 1 Slide Plate - Pump To Guide Rail Ductile Iron
6 1 Base Elbow Cast Iron
7 4 Hex. Head. Cap Screw Stainless Steel
8 4 Lockwasher - Spring Type Stainless Steel
9 2 Guide Shoe - Guide Rail Cast Iron
10 1 Guide Rail - Angle Steel Galv. Steel ; S.S.
FIGURE No. 1

INSTRUCTION 9000 – MODU-CAB 8 1/31/07
PUMP WITH DUAL RAIL EASY-LIFT ®
1) Location
In most cases the pit size, pump elevation, piping arrangement, access door location, and other features have
been established and are shown on an installation drawing. (Refer to construction installation drawing.) The
pump or pumps should be located in the pit on the opposite side from the influent opening.
2) Checking Rotation
It will be necessary to check the rotation of the motor and pump impeller before installing the unit into the basin.
CAUTION: BE CAREFUL NOT TO HAVE HANDS, FEET, CLOTHING, OR OTHER OBJECTS IN OR NEAR
THE PUMP SUCTION OPENING WHEN THE POWER IS ON!
The motor leads should be marked, or the starter diagram located inside the starter should be marked, or both,
so that the connections can be broken and remade with accuracy. It is important that the pump rotates in the
direction for which it was designed. Lay the pump on its side and connect the motor lead to the permanent
source of power. Quickly turn the power on and off to get the impeller spinning. Examine the impeller through
the suction opening. It should be turning counterclockwise. If not, change any two of the motor leads and
recheck. As soon as the motor is rotating in a counterclockwise direction, mark the leads and diagram as
mentioned above. The above instructions apply to three phase motors. Single-phase motors cannot be reversed
in this manner, and the rotation is factory checked. If rotation reversal is required for single-phase motors,
consult the factory.
3) Foundation and Guide Pipes
With the easy lift arrangement the pump is supported by the base elbow, which also supports the discharge
piping. The pit floor should be designed to carry the weight of the entire assembly of pump, base elbow, guide
pipes, and discharge piping. The foundation bolts for the base elbow are located off the clear opening in the pit
cover as shown on the installation drawing referenced in Paragraph 1) above and should be long enough to
accommodate 1" of grout under the foot of the elbow. The base elbow should be shimmed from the rough
concrete floor until the horizontal pipe flange is level in both directions. Then grout the base and allow the grout
to harden before tightening the foundation bolt nuts. Referring to Figure 3, slide the two guide pipes over their
pins in the base elbow. At the top of the guide pipes, install the pipe spacer with the plugs entering the pipes.
For pits deeper than 8 feet, special intermediate spacers may be provided to laterally support the guide pipes to
the discharge pipe. Then the upper ends of the guide pipes are attached to the floor plate cover angle, or
whatever method has been provided. (This attachment varies with installations and is the responsibility of the
customer.)
4) Piping
In most cases, the discharge piping arrangement has been established and a typical arrangement is shown on
the installation drawing; however, there are several rules to follow. The pipe size should be no smaller than that
of the base elbow. Gate and check valves should be provided in each discharge pipe with the check valve
placed between the gate valve and the pump. The valves may be either inside or outside the pit. The base
elbow supports the weight of the piping but long (10' or more) vertical sections may require lateral bracing from
the pit wall.

INSTRUCTION 9000 – MODU-CAB 9 1/31/07
EASY-LIFT®ASSEMBLY
DUAL RAIL
(Drawing No. 111932)
COMPONENT & MATERIALS LIST
ITEM QTY DESCRIPTION NAME STANDARD MATERIAL OPTIONS
1 1 Submersible Pump &
Motor Assembly Cast Iron
2 1 Easy Lift Stationary Elbow Cast Iron
3 1 Easy Lift Slide Clamp. Cast Iron Bronze / Stainless
4 4 Hex Head Cap Screws Stainless Steel
5 4 Lockwasher Spring Type Stainless Steel
FIGURE No. 3

INSTRUCTION 9000 – MODU-CAB 10 1/31/07
SECTION C - OPERATION
PUMP ONLY
Before making electrical connections check that the impeller can be turned freely by hand. This can be done by
reaching into the suction opening. There is a certain drag from the seals so the impeller will not spin, but should
be turned at least two revolutions. If it cannot be turned, correct the problem before starting. (Refer to
TROUBLESHOOTING-Section F).
Check the direction of rotation by connecting leads to the starter (see wiring diagram) and jogging in manual
mode. The rotation should be counterclockwise as viewed through the pump suction. This can be observed by
flashlight through the suction opening. Be cautious with hands or flashlight around the opening. If rotation is
incorrect, switch any two motor leads and recheck. This procedure is only required on three phase motors.
Single-phase motors operate in only one direction and were checked at the factory. Consult factory if rotation
reversal is required on single-phase motors. Mark each electrical lead to assure the correct rotation is
maintained if leads are disconnected at any time. Now, before lowering the pump into the pit and before filling
with fluid, the pit should be cleaned of all construction debris such as chunks of wood, metal, or concrete. Also,
the influent pipe should be checked for similar debris. Also check the moisture sensing circuit for the mechanical
seal by means of the test button or an ohmmeter. If the light turns on, or the measured resistance exceeds
300,000 ohms, the circuit is working; if not, correct before proceeding. (Refer to motor instruction manual.)
After installation of the pump is complete, open the pump discharge valve or valves and open the influent valve
allowing fluid into the pit. When the liquid level is above the motor, start each pump separately and take current
readings in each phase. If these readings are substantially less than the nameplate values, the pump may be air
bound. Jog the motor several times until better agreement is reached. Also, observe for any unusual vibration. If
all seems normal, switch selector to automatic and note that the pump starts on high level and stops on low
level; or, in the case of a duplex station, that the pumps alternate properly. Observe pumps for the first few
hours of operation with special attention to the moisture sensing device and the thermal overload relays. Pump
may be shut down without closing any valves, unless there are no check valves. In this case, the discharge gate
valve must be closed before stopping the pump in order to prevent excessive back flow through the pump.
YEOMANS CHICAGO CORPORATION strongly recommends the use of check valves for unattended pump
stations with automatic control systems. If the pump is to be serviced, be sure the power is off and the motor
safety switch is padlocked to prevent another person from turning it on.

INSTRUCTION 9000 – MODU-CAB 11 1/31/07
SINGLE AND DUAL RAIL PUMPS
Before making electrical connections check that the impeller can be turned freely by hand. This can be done by
reaching into the suction opening. There is a certain drag from the seals so the impeller will not spin, but should
be turned at least two revolutions. If it cannot be turned, correct the problem before starting. (Refer to
TROUBLESHOOTING-Section F).
Check the direction of rotation by connecting leads to the starter (see wiring diagram) and jogging in manual
mode. The rotation should be counterclockwise as viewed through the pump suction. This can be observed by
flashlight through the suction opening. Be cautious with hands or flashlight around the opening. If rotation is
incorrect, switch any two motor leads and recheck. This procedure is only required on three phase motors.
Single-phase motors operate in only one direction and were checked at the factory. Consult factory if rotation
reversal is required on single-phase motors. Mark each electrical lead to assure the correct rotation is
maintained if leads are disconnected at any time. Now, before lowering the pump into the pit and before filling
with fluid, the pit should be cleaned of all construction debris such as chunks of wood, metal, or concrete. Also,
the influent pipe should be checked for similar debris. Also check the moisture sensing circuit for the mechanical
seal by means of the test button or an ohmmeter. If the light turns on, or the measured resistance exceeds
300,000 ohms, the circuit is working; if not, correct before proceeding. (Refer to motor instruction manual.)
Attach the lifting chain to the motor and lift it in to a balanced position over the guide rail (pipes). As the pump is
lowered, make sure that the slide plate and shoes properly engage the upper end of the guide rail, or slide plate
properly engages the upper ends of the guide pipes (whichever is applicable). Lower the pump into operating
position making sure that the electrical cables are not tangled. This would cause a hang-up and damage to the
cables. Enter the pit to make certain that the pump is in position, then mark a link of the chain at the edge of the
cover or door frame. This will insure proper positioning of the pump in subsequent lowerings. The lower end of
the chain remains on the motor and the upper end is attached to a hook at the cover. The pump is removed by a
reverse procedure to the above. Repeat this procedure to insure proper subsequent seating.
After installation of the pump is complete, open the pump discharge valve or valves and open the influent valve
allowing fluid into the pit. When the liquid level is above the motor, start each pump separately and take current
readings in each phase. If these readings are substantially less than the nameplate values, the pump may be air
bound. Jog the motor several times until better agreement is reached. Also, observe for any unusual vibration. !f
all seems normal, switch selector to automatic and note that the pump starts on high level and stops on low
level; or, in the case of a duplex station, that the pumps alternate properly. Observe pumps for the first few
hours of operation with special attention to the moisture sensing device and the thermal overload relays. Pump
may be shut down without closing any valves, unless there are no check valves. In this case, the discharge gate
valve must be closed before stopping the pump in order to prevent excessive back flow through the pump.
YEOMANS CHICAGO CORPORATION strongly recommends the use of check valves for unattended pump
stations with automatic control systems. If the pump is to be serviced, be sure the power is off and the motor
safety switch is padlocked to prevent another person from turning it on.

INSTRUCTION 9000 – MODU-CAB 12 1/31/07
SECTION D-MAINTENANCE
Preventative maintenance should be carried out per the following schedule:
Frequency Work Required
Every Month
a) Check moisture sensor circuit by means of the test button on the relay, or by
measuring the resistance of the moisture sensing circuit.
Resistance should be no less than 300,000 ohms.
b) On duplex unit and if equipped with ET meters, check to see if elapsed time is
balanced between the two pumps. Any gross unbalance indicates a defective
unit, float switch, or control.
c) Inspect float switches for any material that might be lodged and impairing their
operation.
Every Two Years
a) Drain, flush, and refill the seal chamber with new oil. Refer to Motor Instructions.
b) Inspect for any signs of water intrusion in the motor seal chamber and seal cap
chamber. On the seal chamber this may be accomplished by inspection of the oil
that was drained. The seal cap chamber should be visually inspected for
moisture.
c) Inspect power cable for any signs of abrasion or damage that might affect the
integrity of the outer jacketing.
d) Inspect impeller and casing wear rings) for unusual wear. Replace parts if
required.
Every Five Years A complete overhaul by a competent service repair shop should include the following:
a) Completely dismantle the pump and motor.
b) Clean and inspect all parts.
c) Inspect all mechanical seal parts.
d) Replace worn or damaged parts.
e) Replace ball bearings regardless of condition.
f) Replace all "O" rings and gaskets.
g) Inspect motor stator for any sign of abrasion and burned spots on the winding.
Conduct an insulation test. Refer to the factory for values.
NOTE: UNDER ADVERSE CONDITIONS INCREASE FREQUENCY OF CHECKS.

INSTRUCTION 9000 – MODU-CAB 13 1/31/07
SECTION E-DISASSEMBLY AND REASSEMBLY
Completely remove pump from the pit. Padlock motor safety switch and mark electrical leads to maintain correct
rotation. Disconnect pump cable leads from control panel.
Referring to Figure 4 (Drawing 103783-B1), remove cap screws (part 2) and lift motor with impeller out of volute.
If gasket is destroyed, note its thickness for replacement. Note that an adapter plate (part 4) is shown. This may
or may not be on your pump depending on the size of the motor. Lay this assembly on its side on a bench. For
the applicable specific motor frame, remove impeller cap screw or heavy hex nut and washer (part 12). Pull the
impeller off the motor shaft using a wheel puller or similar tool. Remove impeller key (part 13). If pump has a
motor adapter plate, generally there is no need to remove it.
On pump models equipped with polyurethane casing wear ring (See Illustration A for details and list of
applicable models), ring may be removed by severing in half (semi-circle) and extracting. Replacement ring can
then be drive fitted into place. Optional impeller wear ring (part 75) can also be removed by cutting off impeller
eye outside diameter. Replacement impeller wear ring can be driven onto impeller eye outside diameter.
(Slightly heating the wear ring may facilitate reinstallation.) All other models equipped with either casing wear
ring (part 76) and/or impeller wear ring (part 75) are disassembled by removing machine screw (part 77). New
replacement screws must be used and "loctited" in place upon reassembly.
For the disassembly of the motor, refer to specific motor instruction manual. Note that stator repairs can be
made with only partial motor disassembly. However, if complete disassembly is required, follow complete
procedure in the motor instruction manual. After the motor is repaired and reassembled, again place it on its
side on a bench. Assemble the pump in reverse order of disassembly.

INSTRUCTION 9000 – MODU-CAB 14 1/31/07
SERIES 9100 SUBMERSIBLE PUMPS – ALL MODELS
REPAIR KIT
MAT'L
ITEM DESCRIPTIVE NAME
1MOTOR YCC
2HEX HD CAP SCREW - MTR TO UNIT STN STL
3GASKET - MTR ADAPTER PLATE - (WHEN REQ'D) NEOPRENE
4ADAPTER PLATE - MTR TO PUMP (WHEN REQ'D) CAST IRON
5GASKET - MTR/ADAPTER PLATE/VOLUTE NEOPRENE
6SOCKET HD CAP SCREW - ADPTR PLT TO PUMP STN STL
7VOLUTE (DISCHARGE CASING) CAST IRON
12 IMPELLER WASHER STN STL
12A IMPELLER LOCK SCREW WITH NYLON INSERT STN STL
12B SPRING LOCKWASHER - IMPELLER STN STL
12C HEAVY HEX NUT - IMPELLER STN STL
13 KEY - IMPELLER DRIVE STN STL
14 SPACER BUSHING - IMPELLER (WHEN REQ'D) STN STEEL
75 WEARING RING - IMPELLER STN STL
76 WEARING RING - CASING POLY
76A WEARING RING - CASING STN STL
FLAT HD MACHINE SCREW - W/R LOCKING
77 STN STL
8IMPELLER CAST IRON
4/21/05103783-B1_DWP
360 FRAME
CONSTRUCTION WHEN WEAR
RINGS ARE FURNISHED ON PUMP
MODELS OTHER THAN THOSE
LISTED ON ILLUSTRATION A
ILLUSTRATION A
ON PUMP MODELS:
140-180-210-250-320 FR.
12C
12B
12
76
76A
CONSTRUCTION
WHEN IMPELLER
WEAR RING
IS FURNISHED
STANDARD
CONSTRUCTION
STANDARD CONSTRUCTION
ON PUMP MODELS OTHER
THAN THOSE LISTED IN
ILLUSTRATION A
75
1
2
3
4
6
7
8
5
12
13 12A 14
75
76A
77
77
4072
4072.5
4073
4083
4092.5
4103S
4103L
4103SV
4113SV
4123SV
4133SV
4123
4153L
6123
6154L
8175
FIGURE No. 4

INSTRUCTION 9000 – MODU-CAB 15 1/31/07
SECTION F-TROUBLESHOOTING
CAUTION: Motor section of this pump is sealed against outside contamination. Before inspecting pump,
disconnect all electrical power to pump motor and accessories.
PROBLEM PROBABLE CAUSES CORRECTIVE ACTION
Pump will not run Improper wiring. Check wiring.
a) Manual operation Low voltage. Check voltage at contactor, starter
or receptacle to make certain it
coincides with nameplate voltage.
Blown fuse, broken or loose
electrical connection. Check fuses, circuit breakers, and electrical connections.
Power cord insulation damaged. Replace power cord.
Power cord may be open or
grounded. Resistance between hot leads should be zero. Resistance
between hot lead and ground
(green) should be infinite.
Pump impeller locked. Check amps drawn by motor. If
reading is 2 or more times
maximum amps listed in
specification table, impeller is
locked, motor bearings frozen, or
shaft is bent. Remove pump casing
for inspection and cleaning.
Motor overload protection tripped. Allow overload protectors to cool
then press re-set button. Recheck
amps. If current is present but
pump does not run, locked impeller
condition exists.
b) Automatic operation. Loose connection in level control
wiring. Check control panel wiring.
NOTE: Before trouble-shooting
automatic control check to see that
pump operates on manual control.
If it does, automatic controls are at
fault. If not, fault is in pump or
power supply.
Defective switch. Disconnect level control and with
ohmmeter perform a continuity
check. Actuate switch manually.
Closed switch should read zero
resistance, open switch infinite
resistance. If not, replace switch.
Insufficient liquid level to actuate
controls. Allow liquid level to rise 3" to 4" above switch turn-on point.
Pump will not shut off. Level controls tangled. Free the level controls.
Pump is air locked. Shut off power for approximately 1
minute, then restart. Repeat
several times to clear air from
pump. If system includes a check
valve, a 3/16" hole should be drilled
in discharge pipe approximately 2"
above discharge flange connection.
Liquid inflow matches pump
capacity. Larger pump required.

INSTRUCTION 9000 – MODU-CAB 16 1/31/07
PROBLEM PROBABLE CAUSES CORRECTIVE ACTION
Pump runs but does not discharge
liquid. Check valve installed backwards. Check flow indicating arrow on check valve body to insure it is
installed properly.
Check valve stuck or plugged. Remove check valve and inspect
for proper operation.
System head too high for pump. Check pump performance curve.
Inlet to impeller plugged. Pull pump and clean.
Pump is air locked. (See corrective action above)
Improper wiring. Check wiring.
Pump does not deliver rated
capacity. System head too high for pump. Check pump performance curve.
Low voltage, speed too low. Check for proper supply voltage to
make certain it corresponds to
nameplate voltage.
Impeller or discharge pipe is
clogged. Pull pump and clean. Check pipe for scale or corrosion.
Impeller may be rotating in the
wrong direction. Three phase units-interchange any two (2) power lead connections at
pump side of control panel.
Impeller wear due to abrasives or
corrosion. Replace worn impeller.
Improper wiring. Check wiring.
Pump Cycles continuously. No check valve in long discharge
pipe allowing liquid to drain back
into basin.
Install check valve in discharge
line.
Check valve leaking. Inspect check valve for correct
operation.
Liquid basin too small for inflow. Install larger size liquid basin
Level controls set too close
together. Lengthen distance between floats.
Yeomans Pump – Div. Yeomans Chicago Corporation
Shipping Address: Mailing Address:
3905 Enterprise Court P.O. Box 6620
Aurora, IL 60504 Aurora, IL 60598-0620
[phone] PHONE
[phone] FAX
www.yeomanspump.com