Munro LP Series User manual

LP Manual/Rev 0817
© 2017 MUNRO COMPANIES INC, ALL RIGHTS RESERVED

READ AND FOLLOW SAFETY
INSTRUCTIONS!
This is the safety alert symbol. When you see this
symbol on your pump or in this manual, look for one
of the following signal words and be alert to the potential for
personal injury.
warns about hazards that WILL cause serious
personal injury, death or major property damage if ignored.
warns about hazards that CAN cause serious
personal injury, death or major property damage if ignored.
warns about hazards that WILL or CAN cause
minor personal injury, or property damage if ignored.
The label NOTICE indicates special instructions which are
important but not related to hazards.
Carefully read and follow all safety instructions in this manual
and on pump.
MOTOR AND ELECTRICAL:
GENERAL SAFETY – ELECTRICAL
1. Follow all local electrical and safety codes, including the
National Electrical Code (NEC) and the Occupational Safety
and Health Act (OSHA).
2. Disconnect the main power before handling the unit for
ANY REASON.
3. Replace damaged or worn cords immediately.
4. Use extreme caution around an operating pump and
motor – it may be hot enough to cause serious burns.
5. Ground motor before connecting to power supply.
6. If unsure of electrical connection, call a licensed
electrician. High voltage can shock, burn, or cause death.
GENERAL OPERATION – ELECTRICAL
1. Refer to motor nameplate to verify that supply voltage and
motor wiring is the same.
2. Verify motor phase against supply power phase.
GENERAL SAFETY – MOTOR
1. Disconnect the main power before handling the unit for
ANY REASON.
2. An operating motor will run at a high temperature and
will be too hot to touch.
3. Keep pump motor ventilated to reduce damage due to heat.
4. Motor is not waterproof and should never be submersed into
any liquid.
5. Motor is designed to work with up to a 15-degree angle of
water impact. Do not allow water to spray directly onto
motor. External motor protection should be used to eliminate
environmental concerns.
6. To reduce the risk of electric shock, the motor must be
securely and adequately grounded. Refer to National
Electric Code (NEC Article 250 – Grounding) for additional
information.
7. When in doubt, call a licensed electrician. High voltage
can shock, burn, or cause death.
WIRING CONNECTION:
ROTATION
1. All Munro pumps run in a Counter-Clockwise (CCW) rotation
only. (When facing the pump’s suction tapping, all Munro
pump motors are pre-wired to run in a Counter-Clockwise
(CCW) rotation only. Rotation from the motor end
perspective is Clockwise (CW) and is marked as such on
the motor nameplate). Tampering with or reversing the
rotation will damage your pump and void the warranty.
BUMP ROTATION CHECK
1. All 3-phase motors should be “bumped” to check for proper
rotation.
2. Bumping a motor is a split-second application of power
to verify CCW rotation of shaft. See Rotation section above.
3. Improper rotation can cause catastrophic pump failure
and voids the warranty.
GENERAL WIRING INFORMATION
1. Refer to the connection diagram located on the nameplate
of the motor.
2. Grounding the motor can be achieved by securing the
motor to a metal raceway system. Alternately a separate
grounding wire connected to bare metal on the motor
frame, or to the green grounding screw located inside the
motor terminal box, or other suitable means is acceptable.
 (RefertoNECArticle250–Groundingforspecics.)
3. Verify voltage and phase of power source with motor
nameplate before connecting to motor.
4. To change rotation, switch any two wires.
MOTOR PROTECTION
1. Fuses and circuit breakers are used as a safety device for
the wire circuit. They do NOT offer motor protection.
2. Consult local or national electric codes for proper fuse
protection based on the motor data located on the motor
nameplate.
THERMAL OVERLOAD
1. All motors must be thermally protected – either within the
motor or externally.
2. The internal overload is usually automatic and resets itself
once the temperature has dropped to a safe point.
3. Overload helps protect the motor from burnout from
overload of low voltage, high voltage and other causes.
4. Frequent tripping of the overload indicates motor or power
problems. Immediate professional attention is
recommended.
5. NEVER examine, make wiring changes, or touch the
motor before disconnecting the electrical supply. Thermal
overload protectors automatically reset and can close the
electrical circuit without warning.
6. The overload should never be tampered with or
removed.
DANGER
Wire motor for correct voltage. See
“Motor & Electrical” section of this
manual and motor nameplate.
Ground motor before connecting to
power supply.
Meet National Electrical Code,
Canadian Electrical Code, and local
codes for all wiring.
Follow wiring instructions in this
manual when connecting motor to
power.
Page 1

PUMP:
GENERAL SAFETY - PUMP
1. An operating pump, with a blocked discharge, will heat
the water and pump housing. Allow pumps to cool before
handling.
2. High temperature sensors can help protect plastic plumbing
 fromdisguringand/orexpanding.
3. Running a pump without water may cause damage to
the seal.
GENERAL OPERATION – PUMP
1. Locate the pump as close to the water source as is practical.
2. Total suction lift (vertical lift plus any friction loss in suction
line) should not exceed 10’ for optimal performance. Suction
lift of 15’ is attainable depending on elevation, water
temperature, and atmospheric condition. Pump performance
is affected when suction lift exceeds 15’.
3. Fill the pump case and suction pipe with water to expel as
much air as possible prior to start-up. Running a pump dry
may cause damage to the seal and void warranty.
4. Pump and pipe must be drained if there is any danger
of freezing.
PIPE CONNECTION
1. Plastic or galvanized steel pipe are most commonly used.
Support pipe if needed.
2. Keep suction and discharge lines as large as possible. Pipe
should not be smaller than the corresponding suction
and discharge holes.
3. Avoidexcessttingswhenpossible.Usestraightrunswhen
possible.
4. Alljointsandconnectionsshouldhavepipe-specicsealing
compound applied and be completely tightened.
5. Isolation valves or unions on suction and discharge allow
for easy pump removal with multi-pump or positive inlet
pressure applications.
6. Suction pipe should never have a higher elevation than
the pump.
OPERATION:
Initial Priming
1. Removeoneprimingplugfrompumphousingandllthe
pump body and suction line completely with water.
2. Normal system start-up will take a few minutes for air to
expel from system and water to begin to cycle – depending
 onsuctionlift.Ifnowaterisowingafterafewminutes,turn
the pump off and refer to troubleshooting guide. Do NOT run
pump dry for any period of time.
3. Unit must be full of liquid before operating. Never run dry.
Running a pump dry may cause damage to the seal and void
the warranty.
4. Do not run against a closed discharge for more than a few
minutes.
Rotation
1. Single phase motors are pre-wired for CCW and should never
be reversed.
2. Three phase motors must be phased at job site.
Maintenance – Lubrication
1. No lubrication is required. The ball bearings are
permanently lubricated and sealed at the factory.
Maintenance – Freezing
1. Drain the entire system if there is a danger of freezing.
2. Drain valves are provided in both upper and lower pump
case chambers.
3. Closingthedrainvalvesandllingthepumpcasewith
non-toxic RV Antifreeze will reduce the oxidation in the case
over the winter. Before spring start-up, drain the anti-freeze
from the case.
RECOMMENDED OPTIONAL EQUIPMENT:
1. Strainer – Use of strainers prevent large debris from entering
pump system through suction line.
2. Pressure Gauge – Use of a pressure gauge helps to
 determineifpumpisworkingatmaximumefciency.
3. Discharge Valve – Use of a gate or ball valve on the
discharge side of a pump allows pump isolation for removal.
4. Foot Valve – Use of a foot valve (or check valve) can aide
the priming of a centrifugal pump. If suction lines are kept
full, the pump does not have to evacuate the air before
pumping water.
ROTARY SEAL ASSEMBLY REPLACEMENT:
Make certain the power supply is disconnected
before attempting to service the unit!
Seal Removal
1. Remove the case bolts and pump body from motor
assembly.
2. Remove diffuser bolts and diffuser from motor assembly.
3. Insert an open-end 9/16” (LP075B, LP100B, LP150B, LP200B,
LP300B) or an 5/8” (LP1502B) wrench into the side of the
mounting ring, slowly turning the impeller until the wrench
 seatsitselfontotheatsoftheshaft.Onceproperlyseated,
the wrench will keep the shaft from turning. LP3005B model
uses keyed shaft and sleeve. Removal of these impellers
may require high heat to remove the shaft sleeves.
4. Expose the seal assembly by spinning the impeller
counterclockwise to unthread it from the motor shaft.
5. The seal spring will release as the impeller is removed.
6. Being careful not to damage the motor shaft, remove the seal
head, seat and rubber from the seal pocket. The use of a
screwdriver or similar tool may be necessary.
7. Shouldthesealbedifculttoremove,themountingring
can be completely removed for easier access by taking out
the mount ring bolts.
8. Once the seal is removed, clean the pocket removing all
debris.
The rotary seal assembly must be handled
carefully to avoid damaging the precision lapped faces of the
sealing components.
Seal Installation
NOTE: It is recommended to only install new seals. Do not
install used or dirty seals.
NOTE: Application of a light coat of multi-purpose chassis
grease to the outer diameter of the rubber gasket may make
installation easier. Be certain the seat is kept clean and free of
dirt and/or grease at all times.
1. Insert the seal seat rubber gasket into the recessed area
of the mount ring.
2. Slip the seal head assembly onto the motor shaft.
3. Using uniform pressure, be sure the seal’s seat or mounting
ring has completely bottomed-out in recessed area.
4. After placing the spring, install the impeller and bolt the
diffuser onto the motor assembly.
5. Replace and bolt the pump body to the motor assembly.
Page 2
Call Munro technical support for any questions relating to
start-up or operation of this pump.
Toll Free: 1.800.942.4270

PUMP PERFORMANCE
PUMP CURVES
LP1502
LP Series 3/4 HP - 3 HP
LP3005
HP
Capacity - U.S. Gallons per Minute
Discharge Pressure (PSI) at 5’ Suction Lift Shut Off
Pressure
PSI
Suction
Pipe
Tap
Discharge
Pipe
Tap
Max ▲
Suction
Lift
20 25 30 35 40 45 50 55 60 65 70
3/4 63 53 43 33 25 45 2” 1-1/2” 15 Ft.
1 73 65 57 47 35 18 47 2” 1-1/2” 15 Ft.
1-1/2 75 70 68 60 48 35 49 2” 1-1/2” 15 Ft.
2 102 98 92 82 74 61 52 40 60 2” 1-1/2” 15 Ft.
3 115 114 112 105 100 88 72 56 30 61 2” 1-1/2” 15 Ft.
▲ Suction lift varies, depending upon elevation (altitude) and water temperatures.
MAXIMUM CASE PRESSURE --- 150 PSI
HP
Capacity - U.S. Gallons per Minute
Discharge Pressure (PSI) at 5’ Suction Lift Shut Off
Pressure
PSI
Suction
Pipe
Tap
Discharge
Pipe
Tap
Max ▲
Suction
Lift
20 25 30 35 40 45 50 55 60 65 70
5 -- 150 145 137 132 123 110 98 85 67 47 75 3” 3” 15 Ft.
▲ Suction lift varies, depending upon elevation (altitude) and water temperatures.
MAXIMUM CASE PRESSURE --- 150 PSI
HP
Capacity - U.S. Gallons per Minute
Discharge Pressure (PSI) at 5’ Suction Lift Shut Off
Pressure
PSI
Suction
Pipe
Tap
Discharge
Pipe
Tap
Max ▲
Suction
Lift
20 30 40 50 60 70 80 90
2 -- -- 75 67 56 38 0 0 80 2” 1-1/2” 15 Ft.
▲ Suction lift varies, depending upon elevation (altitude) and water temperatures.
MAXIMUM CASE PRESSURE --- 125PSI
Page 3

HP Type Volts/Amps Hz RPM
Motor Voltage
(Factory)
Connected
Service Factor Motor Amps Max
Liquid
Temperature
Single Phase Three Phase
115V 208V 230V 208V 230V 460V
3/4
Single
Phase
115/208-230
60 3450 230V
11.6 5.8 5.8
180˚F
1 16.6 8.5 8.3
1-1/2 23 12.5 11.5
2230 -- 13 12
3 -- -- 17
3/4
Three
Phase 208-230/460 60 3450 230V -- -- --
2.6 2.8 1.4
180˚F
1 3.4 3.6 1.8
1-1/2 5.4 5.2 2.6
2 6.8 6.6 3.3
3 10 9.2 4.6
Motor info subject to change without notice, please consult motor nameplate.
HP Type Volts/Amps Hz RPM
Motor Voltage
(Factory)
Connected
Service Factor Motor Amps Max
Liquid
Temperature
Single Phase Three Phase
115V 208V 230V 208V 230V 460V
2 Single Phase 230 60 3450 230V -- 15.7 16 -- -- -- 180˚F
2 Three Phase 60 3450 -- 8.75 4.35 180˚F
Motor info subject to change without notice, please consult motor nameplate.
HP Type Volts/Amps Hz RPM
Motor Voltage
(Factory)
Connected
Service Factor Motor Amps Max
Liquid
Temperature
Single Phase Three Phase
115V 208V 230V 208V 230V 460V
5 Single Phase 230 60 3450 230V -- 24 22 -- -- -- 180˚F
5 Three Phase 230/460 60 3450 -- -- -- -- -- 14 7 180˚F
Motor info subject to change without notice, please consult motor nameplate.
PUMP SPECIFICATIONS
LP Series 3/4 HP - 3 HP
LP1502
LP3005
WIRING SIZE CHART
Page 4
Motor
Rating Circuit
Size
Fuse
Size
Full
Load
Amps
Copper Wire Size
Volts HP Phase KW 12 10 8 6 4 2
120
(1ø)
1/4
1
20
10
5.8
0.186
291
464
692
1171
1863
2350
1/3
1
20
10
7.2
0.246
230
365
546
924
1471
2338
1/2
1
20
15
9.8
0.373
171
272
407
689
1096
1742
3/4
1
20
15
13.8
0.559
130
207
310
524
834
1326
1
1
20
20
16
0.746
99
157
236
399
635
1009
1-1/2
1
30
25
20
1.12
128
192
325
515
822
240
(1ø)
1/4
1
20
5
2.9
0.186
1166
1853
2769
4685
7453
11850
1/3
1
20
5
3.6
0.246
920
1462
2186
3699
5884
9355
1/2
1
20
8
4.9
0.373
685
1090
1629
2756
4384
6970
3/4
1
20
8
6.9
0.559
522
829
1240
2098
3337
5305
1
1
20
10
8
0.746
397
631
944
1597
2540
4039
1-1/2
1
20
15
10
1.12
269
427
639
1081
1720
2734
2
1
20
20
12
1.49
259
411
615
1041
1656
2633
2-1/2
1
30
20
11.6
1.9
220
344
522
885
1407
2238
3
1
30
25
17
2.24
184
292
437
739
1176
1871
5
1
40
30
28
3.73
198
296
502
798
1269
Motor
Rating Circuit
Size
Fuse
Size
Full
Load
Amps
Copper Wire Size
Volts HP Phase KW 12 10 8 6 4 2
208
(3ø)
1-1/2
3
20
10
6.6
1.12
530
843
1340
2131
3389
5385
2
3
20
15
7.5
1.49
407
648
1031
1639
2607
4145
2-1/2
3
20
15
9.0
1.9
346
551
876
1393
2216
3523
3
3
20
15
10.6
2.24
289
459
731
1162
1849
2939
5
3
30
25
16.7
3.73
181
289
459
730
1162
1847
240
(3ø)
1-1/2
3
20
10
6
1.12
641
1019
1522
2576
4098
6516
2
3
20
10
6.8
1.49
492
783
1170
1979
3148
5006
2-1/2
3
20
15
8.2
1.9
418
666
995
1682
2676
4255
3
3
20
15
9.6
2.24
354
563
841
1423
2264
3600
5
3
30
20
15.2
3.73
243
386
577
977
1555
2472
480
(3ø)
1-1/2
3
20
5
3
1.12
2693
4280
6396
2
3
20
5
3.4
1.49
2019
3210
4797
8116
2-1/2
3
20
10
4.0
1.9
1716
2729
4077
6899
3
3
20
10
4.8
2.24
1615
2568
3837
6492
10328
5
3
20
10
7.6
3.73
973
1547
2311
3911
6221
9891
Values are for estimating purposes only and may not meet NEC code. Design should be veried.

HP Discharge Suction A B C D E F G H I J K L M
3/4 1 1/2” 2” 19 3/4” 3 5/8” 4 1/4” 8 1/2” 7 1/2” 9 1/2” 10 7/8” 9 1/2” 2 3/8” 4 3/4” 2 5/8” 5 1/4” 6”
1 1 1/2” 2” 19 3/4” 3 5/8” 4 1/4” 8 1/2” 7 1/2” 9 1/2” 10 7/8” 9 1/2” 2 3/8” 4 3/4” 2 5/8” 5 1/4” 6”
1 1/2 1 1/2” 2” 19 3/4” 3 5/8” 4 1/4” 8 1/2” 7 1/2” 9 1/2” 10 7/8” 9 1/2” 2 3/8” 4 3/4” 2 5/8” 5 1/4” 6”
2 1 1/2” 2” 18 3/4” 3 5/8” 4 1/4” 8 1/2” 7 1/2” 9 1/2” 10 7/8” 9 1/2” 2 3/8” 4 3/4” 2 5/8” 5 1/4” 6”
3 1 1/2” 2” 20 1/2” 3 5/8” 4 1/4” 8 1/2” 7 1/2” 9 1/2” 10 7/8” 9 1/2” 2 3/8” 4 3/4” 2 5/8” 5 1/4” 6”
HP Discharge Suction A B C D E F G H I J K L M
2 1 1/2” 2” 20” 4 1/4” 7.95” 14” 9 1/4” 11 1/4” 13 1/2” 11 1/2” 3” 5 3/4” 4” 7” 8”
HP Discharge Suction A B C D E F G H I J K L M N O
5 3” 3” 21 3/4” 4” 4 1/2” 6 1/2” 13 1/2” 9 1/2” 12 5/8” 11” 3 1/8” 5 5/8” 7 1/2” 8 1/2” 2 1/2” 4 1/4” 7 1/2”
LP Series 3/4 HP - 3 HP
1502
LP3005
PUMP DIMENSIONS
Page 5

PARTS BREAKDOWN
ITEM SINGLE
PHASE
HORSEPOWER 3/4 1 1 1/2 2 3
MODEL NO. LP075B LP100B LP150B LP200B LP300B
DESCRIPTION PART NO.
1
▲
Motor, Nema J - 1 Phase
Motor Access Cover
Screw, Access Cover
MLP119370 MLP119399 MLP119219 MLP26452 MLP26453
2
▲
3
4
Mounting Ring
Hex hd. cap screws 3/8 x 3/4”
Square Cut Gasket
Seal, Rotary w/Spring
MLP1300
MLPB909
MLPG001
SCC800
1
4
1
1
1
4
1
1
1
4
1
1
1
4
1
1
1
4
1
1
5
6
▲
7
Impeller, Brass “B” Models
Diffuser
Hex HD. Cap Screws 1/4 x 1 1/4”
Rubber Diffuser Gasket
MLP1201
MLPB903
MLPG002
MLP1407
1
2
1
MLP1410
1
2
1
MLP1415
1
2
1
MLP1420
1
2
1
MLP1430
1
2
1
8
▲Pump Body Hex HD. Cap Screws 7/16 x 1” MLP1100 MLPB912 1 41 41 41 41 4
9
▲
▲
10
▲
Base - 48 Y-Frame Motor
Base - 56 J-Frame Motor
Hex HD. Cap Screws 3/8 x 1/2”
Drain Valve 1/4” NPT
3/4” Priming Plug
1/4” Sensor Port
MLP1548
MLP1556
MLPB907
MLP913
•
•
1
--
2
2
2
1
1
--
2
2
2
1
1
--
2
2
2
1
--
1
2
2
2
1
--
1
1
2
2
1
(•) Standard hardware Item ---- (▲) Not Shown
Items SINGLE PHASE HORSEPOWER 2
MODEL NO. LP1502B
DESCRIPTION PART NO.
1
▲
Motor, Nema J - 1 Phase
Motor Access Cover
Screw, Access Cover
MLP33344 1
2
▲
3
4
5
Mounting Ring
Hex HD. Cap Screws 3/8 x 3/4”
Gasket, Square Cut
Seal, Rotary W/Spring
Impeller, Brass “B” Models
MLP2300
MLPB909
MLPG003
PACSC309
MLP2402
1
4
1
1
1
6
▲
7
8
Diffuser
Hex HD. Cap Screws 1/4 x 1 1/4”
Diffuser Gasket
Pump Body
MLP2200
MLPB903
MLPG004
MLP2100
1
2
1
1
▲
9Hex HD. Cap Screws 7/16 x 1”
Base MLPB912 MLP2500 4 1
▲
▲
10
▲
Hex HD. Cap Screws 3/8 x 1/2”
Drain Valve 1/4” NPT
3/4” Priming Plug
1/4” Sensor Port
MLPB907
MLP913
•
•
2
2
2
1
(•) Standard hardware Item ---- (▲) Not Shown
LP Series 3/4 HP - 3 HP
LP1502
Page 6

GOVERNING LAW: It is understood and agreed that these Terms and Conditions of Sale shall be interpreted under and pursuant to the laws of the State of Colorado; you agree that any action at
laworsuitwhichisrelatedtoanycontactofsalebroughtagainstusshallbeledinafederalorstatecourtlocatedintheStateofColorado.
LIMITED WARRANTY: Munro Companies Inc. (The Company) hereby warrants, in accordance with and subject to the provisions herein contained, your unit against defects in materials and
workmanshipundernormaluseandservicewhenproperlyconnectedforaperiodof12monthsor1000hoursofoperation(whicheveroccursrst),fromthedateofpurchase.Intheeventofa
breakdown or failure of your unit or part thereof, within the period of 12 months or 1000 hours of operation which prevents normal function and The Company deems that the breakdown or fail-
ure is a result of defects in manufacturing or workmanship, Munro will repair the breakdown or failure or replace any defective part or the whole unit at the Company’s discretion. Freight charges
will be the User’s responsibility.
Further, we warrant to our immediate customer and to the ultimate consumer that products of our manufacture will be free of defects in material and workmanship under normal use and service
for the following time periods, when installed and maintained in accordance with our instructions. Pump Products: One (1) year from date of installation or (18) eighteen months from date of
shipment,whicheveroccursrst.Asusedherein,“theultimateconsumer”isdenedasthepurchaserwhorstusestheproductafteritsinitialinstallationor,inthecaseofproductdesignedfor
nonpermanentinstallation,therstownerwhousedtheproduct.Itisthepurchaser’soranysub-vendee’sobligationtomakeknowntotheultimateconsumerthetermsandconditionsofthis
warranty.Thiswarrantygivesyouspeciclegalrights,andtheremayalsobeotherrightswhichvaryfromstatetostate.IntheeventtheproductiscoveredbytheFederalConsumerProduct
Warranties Law (1) the duration of any implied warranties associated with the product by virtue of said law is limited to the same duration as stated herein, (2) this warranty is a LIMITED
WARRANTY,and(3)noclaimsofanynaturewhatsoevershallbemadeagainstus,untiltheultimateconsumer,hissuccessor,orassigns,notiesusinwritingofthedefect,anddeliversthe
product and/or defective part(s) freight prepaid to our factory or nearest authorized service station. Some states do not allow limitation on how long an implied warranty lasts, so the above
limitation may not apply. THE SOLE AND EXCLUSIVE REMEDY FOR BREACH OF ANY AND ALL WARRANTIES WITH RESPECT TO ANY PRODUCT SHALL BE TO REPLACE OR REPAIR AT OUR
ELECTION, F.O.B. POINT OF MANUFACTURE OR AUTHORIZED REPAIR STATION, SUCH PRODUCTS AND/OR PARTS AS PROVEN DEFECTIVE. THERE SHALL BE NO FURTHER
LIABILITY, WHETHER BASED ON WARRANTY, NEGLIGENCE OR OTHERWISE.Unlessexpresslystatedotherwise,guaranteesinthenatureofperformancespecicationsfurnishedinadditionto
theforegoingmaterialandworkmanshipwarrantiesonproductmanufacturedbyus,ifany,aresubjecttolaboratorytestscorrectedforeldperformance.Anyadditionalguarantees,inthenature
ofperformancespecicationsmustbeinwritingandsuchwritingmustbesignedbyourauthorizedrepresentative.Duetoinaccuraciesineldtestingifaconictarisesbetweentheresultsof
eldtestingconductedbyorforuser,andlaboratorytestscorrectedforeldperformance,thelattershallcontrol.Componentsoraccessoriessuppliedbyusbutmanufacturedbyothersare
warranted only to the extent of and by the terms and conditions of the original manufacturer’s warranty. RECOMMENDATIONS FOR SPECIAL APPLICATIONS OR THOSE RESULTING FROM
SYSTEMS ANALYZES AND EVALUATIONS WE CONDUCT WILL BE BASED ON OUR BEST AVAILABLE EXPERIENCE AND PUBLISHED INDUSTRY INFORMATION. SUCH RECOMMENDA-
TIONS DO NOT CONSTITUTE A WARRANTY OF SATISFACTORY PERFORMANCE AND NO SUCH WARRANTY IS GIVEN.
This warranty shall not apply when damage is caused by (a) improper installation, mechanical or electrical, (b) improper power (i.e., voltage, etc.) (c) lightning (d) sand or other abrasive material
(e) scale or corrosion build-up due to excessive chemical content (f) This warranty does not extend to or cover the unit or any part of it which, in the opinion of the Company, has worn by
reasonablewearandtear,abradedorcorrodedbyuidpumped,runinadrycondition,operatedathightemperaturesoroutsidethetechnicalspecicationsoftheunit.Anymodicationofthe
original equipment will also void the warranty. We will not be responsible for loss, damage or labor cost due to interruption of service caused by defective parts. Neither will we accept charges
incurred by others without our prior written approval.
Thiswarrantyisvoidifourinspectionrevealstheproductwasusedinamannerinconsistentwithnormalindustrypracticeand/orourspecicrecommendations.Thepurchaserisresponsiblefor
communication of all necessary information regarding the application and use of the product.
UNDER NO CIRCUMSTANCES WILL WE BE RESPONSIBLE FOR ANY OTHER DIRECT OR CONSEQUENTIAL DAMAGES, INCLUDING BUT NOT LIMITED TO LOST PROFITS, LOST INCOME,
LABOR CHARGES, DELAYS IN PRODUCTION, IDLE PRODUCTION, WHICH DAMAGES ARE CAUSED BY ANY DEFECTS IN MATERIAL AND/OR WORKMANSHIP AND/OR DAMAGE OR DELAYS
IN SHIPMENT. THIS WARRANTY IS EXPRESSLY IN LIEU OF ANY OTHER EXPRESS OR IMPLIED WARRANTY, INCLUDING ANY WARRANTY OF MERCHANTABILITY OR FITNESS FOR A
PARTICULAR PURPOSE.
No rights extended under this warranty shall be assigned to any other person, whether by operation of law or otherwise, without our prior written approval. If any litigation is commenced
between the parties hereto for the enforcement of any rights hereunder, the successful party in subject litigation shall be entitled to receive from the unsuccessful party all costs incurred in
connection therewith, including a reasonable amount for attorney’s fees.
YOUR ACCEPTANCE OF ANY GOODS SUPPLIED BY US, OR ON OUR BEHALF, SHALL, WITHOUT LIMITATION CONSTITUTE ACCEPTANCE OF ALL TERMS, AND CONDITIONS STATED
ABOVE.
PARTS BREAKDOWN
TERMS & CONDITIONS
LP3005
ITEM SINGLE PHASE HORSEPOWER 5
MODEL NO. LP3005B
DESCRIPTION PART NO.
1 Motor, NEMAJ - 1 Phase MLP131641 1
▲
2
3
▲
4
5
6
Slinger, Washer
Shaft Sleeve
Mount Ring
Hex HD Cap Screws 3/8” x 3/4”
Gasket, Square Cut
Seal, Rotary W/Spring
Retaining Clip
MLPG005
MLP60010
MLP3300
MLPB909
MLPG003
PACSC185
MLP30001
1
1
1
4
1
1
1
7
8
9
▲
10
▲
Impeller, Brass “B” model
Flat Impeller Washer
Beveled Impeller Washer
Impeller Bolt - Hex HD Cap Screw 1/4” x 1”
Diffuser
Diffuser Bolt - Hex HD Cap Screws 5/16” x 1 1/2”
MLP3405
MLP3WASH
MLP3CONE
MLPB906
MLP3200
MLPB910
1
1
1
1
1
2
11
12
▲
13
▲
Gasket, Diffuser
Pump Body
1/4” Drain Valve
3/4” Priming Plug
1/4” Sensor Port Plug
MLPG004
MLP3100
MLP913
•
•
1
1
2
2
1
(•) Standard hardware Item ---- (▲) Not Shown ---- (*)3 Phase Only
Page 7

SYMPTOM POSSIBLE CAUSE(S) CORRECTIVE ACTION
Little or no discharge 1. Casing not initially lled with water to prime pump
2. Total head too high
3. Suction lift too high, or too long
4. Impeller plugged
5. Hole or air leak in suction line
6. Foot valve too small
7. Impeller damaged
8. Foot valve or suction line not submerged deep
enough in water
9. Insufcient inlet pressure or suction head
10. Suction piping too small
11. Motor wired incorrectly
12. Casing gasket leaking
13. Suction or discharge line valves closed
1. Fill pump casing
2. Shorten suction lift and/or change head
3. Lower suction lift, install foot valve and prime,
or shorten length of suction line
4. Clean impeller
5. Repair or replace suction line, use pipe sealing
compound.
6. Match foot valve to piping or install one size
larger foot valve
7. Replace impeller
8. Submerge lower in water
9. Increase inlet pressure by adding more water to
tank or increasing back pressure
10. Increase to pump inlet size or one size larger
11. Check wiring diagram for correct wiring
12. Replace Gasket
13. Open suction and/or discharge lines
Pump will not deliver water or develop
pressure 1. No priming water in casing
2. Mechanical seal is leaking
3. Leak in suction line
4. Discharge line is closed and priming air has no
where to go
5. Suction line (or valve) is closed
6. Poor pump performance
7. Foot valve is leaking
8. Suction screen is clogged
1. Fill pump casing
2. Replace seal (See Rotary Seal Replacement)
3. Repair or replace
4. Open discharge line
5. Open suction line or valve
6. Replace worn parts
7. Replace foot valve
8. Clean or replace screen
Loss of suction 1. Air leak in suction line
2. Suction lift is too high
3. Insufcient inlet pressure or suction head in
booster system
4. Clogged foot valve or strainer
1. Repair or replace suction line
2. Lower suction lift, install foot valve and prime
3. Increase inlet pressure by adding more water to
tank or increasing back pressure
4. Unclog
Pump vibrates and/or makes excessive
noise 1. Mounting plate or foundation not rigid enough
2. Foreign material in pump
3. Impeller damaged
4. Worn motor bearings
5. Suction lift too high
1. Reinforce
2. Disassemble pump and clean
3. Replace impeller
4. Replace bearings
5. Lower suction lift, install foot valve and prime
Pump will not start or run 1. Improper wiring
2. Blown fuse or open circuit breaker
3. Loose or broken wiring
4. Stone or foreign object lodged in impeller
5. Motor shorted out
6. Thermal overload has opened circuit
1. Check wiring diagram on motor
2. Replace fuse or close circuit breaker
3. Tighten connections, replace broken wiring
4. Disassemble pump and remove foreign object
5. Replace motor
6. Allow unit to cool, restart after reason for over
load has been determined
Pump leaks at shaft 1. Worn mechanical shaft seal 1. Replace rotary seal (See Rotary Seal
Replacement)
Page 8
Download troubleshooting guide @ www.munrocompanies.com Call Munro technical support for any questions relating to start-up or
operation of this pump. Toll Free: 1.800.942.4270