Munro MU Series User manual

munro
OWNER’S MANUALOWNER’S MANUAL
MU SERIES CENTRIFUGAL PUMPS
Installation - Operation - PartsInstallation - Operation - Parts
1.800.942.42701.800.942.4270
[email protected][email protected]
www.munropump.comwww.munropump.com

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.
MOTOR AND ELECTRICAL:
Carefully read and follow all safety instructions in this manual and
on the pump.
GENERAL SAFETY – ELECTRICAL
1. Every time work is to be performed on a pump,
the power supply should be terminated at the breaker box.
2. Follow all local electrical and safety codes,
including the National Electrical Code (NEC) and the
Occupational Safety and Health Act (OSHA).
3. Replace damaged or worn cords immediately.
4. Ground motor before connecting to power supply.
5. Use extreme caution around an operating pump
and motor – it may be hot enough to cause serious burns.
GENERAL OPERATION – ELECTRICAL
1. Before using pump, check your motor nameplate
for voltage. Your electric supply voltage and the stamped
nameplate voltage must match. Motors stamped 200 volts
only or 230 volts only must be used with that voltage only.
Motors stamped with two voltages (for example 230/460
volts) may be used with either supply voltage.
2. Check the connections against the wiring diagram
on the motor nameplate and make any changes necessary to
agree with your supply voltage.
3. Supply voltage must be within 10%, or nameplate
voltage. Incorrect voltage can cause re or seriously damage
motor and voids warranty. When in doubt, call a licensed
electrician. High voltage can shock, burn, or cause death.
4. Some models are equipped with three phase motors. Three
phase motors require magnetic starters.
GENERAL SAFETY – MOTOR
1. Disconnect the main power before handling the
unit for ANY REASON.
2. An operating motor can run between 250°F and
311°F depending on insulation rating. Never touch a motor
without rst determining the housing temperature.
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:
Refer to the connection diagram located on the nameplate of the
motor.
GROUNDING
1. 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.)
2. Verify motor grounding provision on the nameplate before
connecting any wires to the motor.
ROTATION
1. When facing the suction tapping, all Munro pumps 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.
CHECK MOTOR ROTATION
1. Remove the motor end cover to expose the motor shaft.
2. If hook-up is correct, the shaft will rotate clockwise.
3. If rotation is not clockwise, see motor nameplate for
installation information.
4. Tampering with, or reversing, the rotation will damage your
pump and void the warranty.
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. Refer to motor nameplate to verify the presence of overload
protection.
2. Overload protects the motor from high and low voltage
irregularities.
3. All motors must be thermally protected – either within the
motor or externally.
4. The internal overload is usually automatic and
resets itself once the temperature has dropped to a safe point.
5. Frequent tripping of the overload indicates motor or power
problems. Immediate professional attention is recommended.
6. 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.
7. The overload should never be tampered with
or removed.
DANGER
Electric pump motors can be
hazardous if not properly installed.
Call a licensed electrician if unsure
of any electrical connection.
Page 1
DANGER

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 15’ for optimal performance. Suction
lift of 25’ is attainable depending on elevation, water
temperature, and atmospheric condition. Pump performance
is affected when suction lift exceeds 15’.
3. The pump should be set rmly in a level position.
4. 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.
5. 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 as 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, especially with multi-pump or
positive inlet pressure applications.
6. Suction pipe should never have a higher elevation than the pump.
ENGINE DRIVE
1. Check that the engine and pump are free to rotate by turning
the engine hand-crank slowly through a complete revolution.
OPERATION:
INITIAL PRIMING
1. 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.
2. Fill the pump body and suction line completely with water.
Never operate the pump without water in the pump case.
3. 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 (p.8). Do
NOT run pump dry for any period of time.
4. Do not run against a closed discharge for more than a
few minutes.
MAINTENANCE – CLEANING
1. Run clear water through the pump if possible after pumping
dirty water. Do this for two or three minutes before stopping
the engine or motor.
MAINTENANCE – LUBRICATION
1. The seal must be kept lubricated by the liquid being pumped
and should never be allowed to run dry.
MAINTENANCE – FREEZING
1. Remove the lower drain plug to drain the pump case when
the unit is idle, during freezing weather, or in storage and let
it drain completely.
2. Filling the pump with non-toxic Munro Freeze Defeat and
replacing the plug, will reduce the oxidation in the case over
the winter. Before spring start-up, drain the Munro Freeze
Defeat 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
troubleshoot and identify a pump or system issue.
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 be-
fore attempting to service the unit!
SEAL REMOVAL
1. Remove the pump case from motor bracket.
2. Remove impeller retaining bolt and cone washer (RH threads)
then remove impeller.
3. Remove motor bracket and sleeve/seal assembly from motor
shaft.
4. Remove the seal from the sleeve – penetrating lubricant may
be used to ease removal.
5. Remove ceramic seat and rubber cup from motor bracket.
SEAL INSTALLATION
NOTICE: As sealing faces are matched parts, the shaft seal
must be replaced as a complete assembly. Extreme care must
be taken to keep seal faces and components perfectly clean
during assembly.
NOTICE: Application of a light coat of multi-purpose water-
based lubricant to the outer diameter of the rubber seat may
make installation easier. Be certain both seal face surfaces are
kept clean.
1. Inspect and clean the shaft sleeve – replace if grooves can be
felt by running a ngernail along the sleeve.
2. Using a wire brush and power drill, clean up the seat pocket
in the motor bracket – install stationary seat into motor
bracket and install onto motor.
3. Install the rotating portion of the seal onto the sleeve *Note
the carbon seal face should face the inner bevel for o-rings.
4. Install two o-rings on motor shaft – apply light lm of
waterproof silicone to the o-rings – install shaft sleeve fully
over o-rings ensuring not to pinch.
5. Apply a light lm of grease to the shaft and key, install
impeller, install cone washer, new lock washer and bolt.
6. Install new housing gasket/o-ring and apply a light lm of
grease.
7. Install housing, verify pump and motor turn free once fully
assembled.
Page 2

PUMP PERFORMANCE
PUMP CURVES
M Series
H Series
Page 3
Shut Off
Pressure
PSI
Shut Off
Pressure
PSI
10 96 86 71
20 107 102 96 87 75 63
15 95 91 85 75 64 49
15 107 97 83
10 73 67 61 55 43 27
10 73 67 61 55 43 27
10 96 86 71
7.5 63 60 54 44 32
7.5 81 70 55
7.5 63 60 54 44 32
7.5 81 70 55
HP
HP
Capacity - U.S. Gallons per Minute
Discharge Pressure (PSI) at 5’ Suction Lift*
Capacity - U.S. Gallons per Minute
Discharge Pressure (PSI) at 5’ Suction Lift*
100
100
150
150
250
250
300
300
200
200
50
50
Model
Number
Model
Number
MU20MT
MU15MT
MU15HT
98
109
110
MU10MT
MU10HT
75
98
MU75MT
MU75HT
65
85
MU10MS
MU10HS
75
98
MU75MS
MU75HS
65
85
*Suction lift varies, depending upon elevation (altitude) and water temperatures. Max lift is 15 feet at 5000’ elevation.
Maximum case pressure is 120 psi

PUMP SPECIFICATIONS
WIRING SIZE CHART
Page 4
Specifications – Pump – H Series
Specifications – Motor – H Series
Specifications – Motor – M Series
Specifications – Pump – M Series
Motor
Rating Circuit
Size
Fuse
Size
Full
Load
Amps
Copper Wire Size
Volts HP KW 12 10 8 6 4 2 0 00 000 0000 250 300 350
208
(1ø)
7-1/2 60 50 44 5.59 205 350 555 885 1410 1780 2245 2830 3345
10 60 60 55 7.46 270 430 685 1095 1380 1740 2195 2595 3115
240
(1ø)
7-1/2 50 45 40 5.59 218 369 588 935 1488 1876 2365 2983 3524
10 60 60 50 7.46 286 456 725 1153 1455 1834 2313 2733 3279
Starting on the left, find your required voltage and phase rating. Move to the right at the Horsepower (HP) needed and
verify the Full Load Amps (FLA) equals or exceeds the listed FLA found on the motor nameplate. Using the distance of
the wire run, look to the right for the next HIGHEST number. Once that number is located, follow that column up to the
top of the chart. This resulting number is the wire size required to carry that particular voltage/phase and HP for that
distance. (All motors are not the same. If the FLA does not meet or exceed the nameplate FLA, use the FLA column to
determine what line to use for distance and resulting wire size.)
HOW TO USE A WIRE SIZE CHART
HP Suction Discharge
Approx Ship
Weight
lbs
Max
Liquid
Temperature
Max Case
Pressure
psi
Model Number
7.5
4” 3”
225
100˚ 120
MU75MS
7.5 174 MU75MT
10 229 MU10MS
10 197 MU10MT
15 210 MU15MT
20 241 MU20MT
TEFC
ODP
TEFC
ODP
ODP
ODP
HP Suction Discharge
Approx Ship
Weight
lbs
Max
Liquid
Temperature
Max Case
Pressure
psi
Model Number
7.5
3” 3”
225
120
MU75HS
7.5 174 MU75HT
10 229 100˚ MU10HS
10 197 MU10HT
15 210 MU15HT
HP Phase Volts Run Amps Motor Type Model Number
7.5 1 208-230/460 30.5-28.2/14.1 TEFC
ODP
TEFC
ODP
ODP
MU75HS
7.5 3 230/460 17.5/8.76 MU75HT
10 1 208-230/460 41.8-38.8/19.4 MU10HS
10 3 208-230/460 25.7-23.2/11.6 MU10HT
15 3 230/460 34.0/17.06 MU15HT
HP Phase Volts Run Amps Motor Type Model Number
7.5 1 208-230/460 30.5-28.2/14.1 TEFC
ODP
TEFC
ODP
ODP
ODP
MU75MS
7.5 3 230/460 17.5/8.76 MU75MT
10 1 208-230/460 41.8-38.8/19.4 MU10MS
10 3 208/230/460 25.7-23.2/11.6 MU10MT
15 3 230/460 34.0/17.0 MU15MT
20 3 208-230/460 51.3-46.4/23.2 MU20MT
Motor specications may change without notice, always verify nameplate information.

PUMP DIMENSIONS
Page 5
WIRING SIZE CHART (cont.)
Motor
Rating Circuit
Size
Fuse
Size
Full
Load
Amps
Copper Wire Size
Volts HP KW 12 10 8 6 4 2 0 00 000 0000 250 300 350 400 500 600
208
(3ø)
7-1/2 30 35 24.2 5.59 202 321 511 811 1293 2058 2594 3270 4124 4872
10 40 40 30.2 7.46 251 399 635 1010 1608 2026 2555 3222 3807 4568 5329 6091 7614
15 60 60 46.2 11.19 266 423 673 1072 1351 1703 2148 2538 3045 3553 4060 5076
20 100 80 59.4 14.91 328 520 829 1046 1318 1663 1964 2357 2750 3143 3929
240
(3ø)
7-1/2 30 30 22 5.59 268 401 679 1080 1717 2733 3445 4343 5476 6470 7764 9059 10353 12941 15529
10 40 35 28 7.46 299 507 806 1282 2041 2573 3243 4090 4832 5799 6766 7731 9666 11598
15 50 50 42 11.19 395 629 1001 1593 2008 2531 3192 3771 4526 5280 6035 7543 9052
20 70 70 54 14.91 423 672 1070 1349 1701 2145 2535 3042 3549 4056 5070 6084
480
(3ø)
7-1/2 20 15 11 5.59 678 1079 1612 2728 4339 6899 10978
10 20 20 14 7.46 504 802 1199 2029 3227 5131 8165 10292
15 30 25 21 11.19 626 936 1583 2519 4004 6373 8032 10127 12770
20 40 35 27 14.91 629 1064 1693 2691 4283 5399 6806 8583
NOTE: Pump dimensions are approximate and may vary.
15 1/4”
15 1/4” 26 5/8” 2 3/4” 3 1/2”
7 15/16”
7 15/16” 9 5/16” 4 1/4”
4 1/4”
15 5/32”
10 9/16”
10 9/16”
15 5/32” 9 5/16”
5 1/4”
5 1/4”
3 1/2”
2 3/4”
27 1/4”
5 1/2”
2 7/8”
2 7/8”
6 1/8”8 3/4”
8 3/4” 6 1/8” 7”
3 3/4”
4 1/4”
4 1/4”
5”
11”
9 5/16”
8 3/32”
7 15/16”
7 15/16”
7 15/16”
7 15/16”
9 5/16”
4 1/2”
4 1/2”
5 1/4”
5 1/4”
5 1/4”
5 1/4”
7”
7”
3 1/2”
3 1/2”
4 1/4”
2 3/4”
2 3/4”
2 3/4”
2 3/4”
2 3/4”
2 3/4”
2 3/4”
2 3/4”
2 3/4”15 1/4”
15 1/4”
15 1/4”
15 1/4”
15 1/4”
15 1/4”
15 1/4”
15 1/4”
23 1/2”
25 5/8”
27 1/4”
29 1/2”
8 3/4”
8 3/4”
8 3/4”
8 3/4”
8 3/4”
8 3/4”
8 3/4”
8 3/4”
6 1/8”
6 1/8”
6 1/8”
6 1/8”
2 7/8”
2 7/8”
2 7/8”
2 5/8”
4 1/2”
5 1/2”
7”
8 1/4”
10 9/16”
10 9/16”
10 9/16”
10 9/16”
15 5/32”
15 5/32”
15 5/32”
15 5/32”
6 1/8”
6 1/8”
6 1/8”
6 1/8”
30 13/16”
35 1/4”
35 1/4”
42”
2 7/8”
2 7/8”
2 7/8”
2 5/8”
3 1/2”
3 1/2”
4 1/4”
2 3/4” 4 1/2”
7”
7”
10”
10 9/16”
10 9/16”
10 9/16”
10 9/16”
7 15/16”
7 15/16”
7 15/16”
7 15/16” 15 5/32”
15 5/32”
15 5/32”
15 5/32” 11”
9 5/16”
8 3/32”
9 5/16”
3 3/4”
4 1/4”
4 1/4”
5”

PARTS BREAKDOWN
Page 6
H Series
MODEL NO.
HORSEPOWER
MU16HT
15
MUTOHT
10
MU75HT
7.5
MU10HS
10
MU75HS
7.5
PART NO.DESCRIPTIONITEM
MUP13009105
MUP31006207
MUP2159200
MUP8287211
MUP31006207
MUP14129225
MUP47017108
MUPH1NI1
MUP2156909
MUP47002209
MUP31006307
MUPH282756
MUP2156909
MUPH287797
MUPH282700
MUPH1PM7
MUP14178701
MUP14412209
MUP14129423
MUP14129647
MUP22020408
MUP10036903
n/a
MUP14412407
MUP31005911
MUP16001406
MUP14074009
MUP14140313
MUP16001208
MUP14129225
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
8 8 8 8 8
4 4 4 4 4
2 2 2 2 2
2 2 2 2 2
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
4 4 4 4 4
Suction Gasket/Flapper
3/4”Drain Plug
3/4”Accessories Plug
Motor Bracket Single Phase 15hp
Impeller 7.5hp
Self Primer Case
Motor Bracket Single Phase, 7.5-10hp
Impeller Wear Ring
Shaft Sleeve
1” Fill Plug
Impeller Bolt
Power Frame
Bracket/Motor Cap Screw 3ph
Bracket/Case Cap Screw
Impeller Key, 7.5-15hp
Motor
Deector
Bracket/Motor Cap Screw 1ph, 10-15hp
Case/Bracket O-Ring
Bracket/Motor Cap Screw 1ph, 7.5hp
Motor Bracket Three Phase 10-15hp
Impeller 15hp
Motor Bracket Three Phase 7.5hp
Impeller 10hp
Sleeve O-Ring
Mechanical Seal
Impeller Washer
1/4” Vacuum Plug
Flapper Weight
Flapper Weight Washer
Flapper Weight Screw
Suction Flange 3”NPT
Suction Flange Cap Screw
5
7
21
10
23
13
22
12
19
18
17
26
16
25
15
20
9
8
6
4
3
2
1
24
14
11
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
1 1 1 1 1
12
3
3,4,5,6
(assembled)
4
56
78
9
10
11
12
23
13, 14, 15
(assembled)
16
17
18
19
20
21
22
24
25 26

PARTS BREAKDOWN
Page 7
M Series
MUP14389803
Shaft Sleeve 20hp
Sleeve O-Ring, 20hp
Mechanical Seal 20hp
MODEL NO.
HORSEPOWER
MU16HT
15
MU20MT
20
MUTOHT
10
MU75HT
7.5
MU10HS
10
MU75HS
7.5
PART NO.DESCRIPTIONITEM
MUP13037502
MUP31006207
MUP14389803
MUP14412308
MUP31006207
MUP2137503
MUP5122912
MUP8287310
MUPH1N12
MUP2156909
N/A
MUP8287211
MUP31006307
MUP14129647
MUP14412506
MUP22020507
MUP14129423
MUP14073324
MUP14129225
MUP14412407
MUP22020408
MUP14389803
MUP2137503
MUP5191713
MUP47017108
MUP14178701
MUP2156909
MUP5123612
MUP13038500
MUP10037002
MUP2159200
MUP5123518
MUP47002209
MUP10036903
MUP14179701
MUP14412209
MUP31005911
MUP16098907
MUP14074009
MUP14140313
MUP16098808
MUP14129225
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
2 2 2 2 2 2
1 1 1 1 1 1
8 8 8 8 8 8
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
2 2 2 2 2 2
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
1 1 1 1 1 1
4 4 4 4 4 4
4 4 4 4 4 4
Suction Gasket/Flapper
3/4”Drain Plug
Bracket/Motor Cap Screw 3ph, 20hp
Impeller Washer Adpt. 20hp
3/4”Accessories Plug
Motor Bracket Single Phase 20hp
Impeller 7.5hp
Shaft Sleeve 20hp
Self Primer Case
Motor Bracket Single Phase, 7.5-15hp
Impeller Wear Ring
Shaft Sleeve, 7.5-15hp
1” Fill Plug
Impeller Bolt 7.5 -15hp
Impeller Key, 20hp
Power Frame
Deector, 20hp
Bracket/Motor Cap Screw 3ph, 7.5hp
Impeller Bolt 20hp
Bracket/Case Cap Screw
Impeller Key, 7.5-15hp
Motor
Deector, 7.5-15hp
Bracket/Motor Cap Screw 1ph, 20hp
Motor Bracket Three Phase 20hp
Impeller 20hp
Case/Bracket O-Ring
Bracket/Motor Cap Screw 1ph, 7.5-15hp
Motor Bracket Three Phase 10-15hp
Impeller 15hp
Sleeve O-Ring, 20hp
Mechanical Seal 20hp
Motor Bracket Three Phase 7.5-15hp
Impeller 10hp
Sleeve O-Ring, 7.5-15hp
Mechanical Seal, 7.5-15hp
Bracket/Motor Cap Screw 3ph,10-15hp
Impeller Washer Adpt, 7.5-15hp
1/4” Vacuum Plug
Flapper Weight
Flapper Weight Washer
Flapper Weight Screw
Suction Flange 4”NPT
Suction Flange Cap Screw
5
7
21
10
23
13
22
12
19
18
17
26
16
25
15
20
9
8
6
4
3
2
1
24
14
11

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 Assembly
Replacement on p.2)
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 Assembly
Replacement on p.2)
Page 8
Download troubleshooting guide at
www.munropump.com/resources Call Munro technical support for any questions relating to start-up or operation of
this pump. Toll Free: 1.800.942.4270
TROUBLESHOOTING GUIDE

GOVERNING LAW: It is understood and agreed that these Terms and Conditions
of Sale (this “Agreement”) 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 filed in a federal or state court located in
the State of Colorado.
LIMITED WARRANTY: Munro, 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
installed, following provided installation instructions for a period of 12 months
or 1000 hours of operation (which ever occurs first), from the date of purchase
(Continuous-duty rated products are exempt from the 1000 hours of operation
stipulation). 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 is found to be the result of a defect in materials or workmanship, the
Company will repair the breakdown or failure and/or replace any defective part or
the whole unit at the Company’s discretion. Freight charges will be the customer or
ultimate consumer’s responsibility.
Further, we warrant to our immediate customer and to the ultimate consumer (the
“Customer”) that products of our manufacture will be free of defects in material
and workmanship under normal use and service, when installed and maintained in
accordance with our instructions, for a period of twelve (12) months from date of
sale to the ultimate customer or eighteen (18) months from date of shipment to the
Munro distributor, whichever occurs first. As used herein, the “Ultimate Consumer”
is defined as the purchaser who first uses the product after its initial installation or,
in the case of product designed for non-permanent installation, the first owner who
used the product. It is our immediate customer’s obligation to make known to the
Ultimate Consumer the terms and conditions of this warranty. This warranty provides
limited specific legal rights, and there may also be other rights, which vary from state
to state. As, and to the extent, covered by the federal consumer product warranties
Law (the Magnuson-Moss Act, 15 U.S. Code §2301, et seq., (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, to the fullest extent allowed, (2) this warranty is for
all purposes a LIMITED WARRANTY, and (3) no claims of any nature whatsoever
shall be made against the Company, unless and until the Ultimate Consumer notifies
the Company in writing of the defect, and delivers the product and/or defective
part(s) Customer paid freight (see Return Policy section, below) to our factory or
nearest authorized service facility. Some states do not allow limitation on how long
an implied warranty lasts, so the above limitation may be limited by such law, to
the extent applicable. 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 MANUFACTURER
OR AUTHORIZED REPAIR FACILITY, 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, statements as to the nature of performance specifications furnished
in addition to the foregoing material and workmanship warranties on product
manufactured by the Company, if any, are subject to laboratory tests corrected for field
performance. Any additional statements in the nature of performance specifications
must be in writing and such writing must be signed by our authorized representative.
Due to inaccuracies in field testing, if a conflict arises between the results of field
testing conducted by or for user, and laboratory tests corrected for field performance,
the latter shall control. Components or accessories supplied by us but manufactured by
others are warranted only to the extent of, and are subject to, 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 RECOMMENDATIONS 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)
freezing (e) sand or other abrasive material (f) scale or corrosion build-up due to
excessive chemical content. 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 wear and tear, abraded
or corroded by fluid pumped or environmental conditions, run in a dry condition,
operated at high temperatures or outside the technical specifications of the unit.
Mechanical seal failure is not warranted outside of initial start up. Any modification
of the original equipment will also void this warranty. We will not be responsible for
loss, damage or labor cost due to interruption of service caused by defective parts,
nor 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 specific recommendations. The
purchaser is responsible for communication of all necessary information regarding
the intended application and use of the product.
UNDER NO CIRCUMSTANCES WILL WE BE RESPONSIBLE FOR ANY
OTHER DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES, INCLUDING
BUT NOT LIMITED TO LOST PROFITS, LOST INCOME, LABOR CHARGES,
DELAYS IN PRODUCTION, IDLE PRODUCTION, REGARDLESS OF WHETHER
SUCH 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 may 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.
PRICING
All prices provided are guaranteed for only 30 days from the date of written quote,
unless otherwise noted. Unless noted, prices do not include applicable taxes or
freight costs. Prices are otherwise subject to change without notice. Customer is
responsible for payment of all applicable state and local taxes, or for providing a
valid sales tax exemption certificate. The Company reserves the right to reject
any order.
PAYMENT TERMS
The Company accepts cash, checks, money orders, direct deposit, Visa, MasterCard,
Discover and American Express. Credit card payments made on the date of invoice
or within 10 business days of invoice date will not incur a fee. Credit card payments
made 11 or more business days after the date of invoice will incur a 3% service
charge. For Customers with established credit, terms are net, due 30 days following
the date of invoice. A finance charge is computed on a periodic rate of 2% per
month, which is an annual rate of 24%, on any previous balance not paid within
30 days (minimum service charge of 50¢). Customer agrees to pay all costs of
collection and all attorney’s fees if the account becomes delinquent and is referred
for collection.
FREIGHT & SHIPPING
Freight terms are FOB Munro, Inc. dock, unless otherwise noted. Unless other
arrangements are made, The Company will ship to an address provided by
Customer, by the most efficient means we find. Shipping and handling charges will
be added to invoices. The Company is not liable for any delays in shipping or issues
related to arrival times and do not guarantee delivery dates.
RETURN POLICY
1. 30-days, new condition – Upon the Company’s verification that the product
is in new condition, the Company will provide a refund for the price paid less a
15% restocking fee, for all stock items returned in new condition within 30 days of
purchase and sent freight prepaid to our factory or nearest authorized service facility.
Any returned product that is damaged through misuse, is missing parts, or is in
unsellable condition due to Customer tampering will result in the Customer being
charged a higher restocking fee based on the condition of the product.
2. Custom orders – All custom items are non-refundable. All custom order
cancellations must be approved and may be denied or subject to restocking fees and
other charges.
3. Damaged in shipping – Great care is taken in filling, checking and packing
your order. Should your order be damaged or lost in transit, write so on the delivery
receipt before signing. If a truck shipment is damaged, please obtain an inspection
report from the truck line immediately. The Company will help to resolve the
situation to the best of our ability.
4. Warranty claim – Please note that products must not be returned to our
factory or nearest authorized service facility for warranty consideration without the
Munro distributor first contacting Munro to initiate a Return Merchandise
Authorization (RMA).
5. Freight - Freight charges to inspect a Munro product will be the user’s
responsibility until warranty eligibility is determined. If product is warranteed, Munro
will cover all freight costs. Munro’s Packaging Guidelines must be adhered to.
Lowest cost shipping option must be used. Pre-authorization from Munro is required
for expedited shipping.
6. For complete warranty procedures and packaging guidelines, please visit:
www.munropump.com/Company-Information/Warranty-statements
ENTIRE AGREEMENT
No employee or agent of Munro, Inc. has been authorized to make any promises,
representations or warranties binding Munro Inc., or its parent company, Munro
Companies, Inc., or its owners or management, other than those contained here
or those which have been reduced to writing and signed by an officer of Munro
Companies, Inc. Any verbal or written statements made by an employee or agent
which are contrary to the provisions of this Agreement shall be deemed mere
expressions of opinion and not binding. This Agreement constitutes the entire
agreement between Munro, Inc. and the Customer with respect to the purchase of
equipment, superseding all other agreements, whether oral or written.
YOUR ACCEPTANCE OF ANY GOODS SUPPLIED BY US, OR ON OUR
BEHALF, SHALL, WITHOUT LIMITATION CONSTITUTE ACCEPTANCE OF ALL
TERMS, AND CONDITIONS STATED ABOVE.
munro
GOVERNING LAW & LIMITED WARRANTY FOR PUMPS, PUMP CONTROLS, VALVES, FITTINGS AND ACCESSORIES MANUFACTURED BY MUNRO
munro
P.O. BOX 519 • GRAND JUNCTION, CO 81501
1.800.942.4270
[email protected]
www.munropump.com
© 2019 MUNRO COMPANIES INC., ALL RIGHTS RESERVED / REV 0919
2021 MUNRO COMPANIES INC., ALL RIGHT RESERVED 0921
MU01R1