Barmesa Pumps KLEIN Series Instruction manual

Last update: 01/25/2022
Installation, Operation &
Maintenance Manual
Submersible Stainless Steel
Dewatering Pumps
IMPORTANT! - Read all instructions in this manual before operating or servicing
a pump.
KLEIN series
0.5, 1 & 2 HP
@ 3450 RPM
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Before installation, read the following
instructions carefully. Failure to
follow instruction and safety
information could cause serious
bodily injury, death and/or property
damage. Each Barmesa product is
carefully inspected to insure proper
performance. Closely following these
instructions will eliminate potential
operating problems, assuring years
of trouble-free service.
IMPORTANT! - Barmesa Pumps is not
responsible for losses, injury or
death resulting from failure to
observe these safety precautions,
misuse, abuse or misapplication of
pumps or equipment.
Installation, wiring, and
ju n c t io n c onn ec tio ns m ust b e in
accordance with the National Electric
Code and all applicable state and local
codes. Requirements may vary depending
on usage and location.
WARNING
I n s t a l l a t i o n a n d
servicing is to be conducted by
qualified personnel only.
WARNING
D o n o t u s e t h e s e
pumps in water over 104 °F. Do not
exceed manufactures recommended
maximum performance, as this could
cause the motor to overheat.
WARNING
Ground Fault Circuit
Interrupter (GFCI) to be used with
plug-in type power cord.
WARNING
A L L R E T U R N E D
P R O D U C T S M U S T B E
CLEANED, SANITIZED, OR
DECO NTA MIN AT E D P RIO R TO
S H I P M E N T , T O I N S U R E
E M P L O Y E E S W I L L N O T B E
EXPOSED TO HEALTH HAZARDS IN
HANDLING SAID MATERIAL. ALL
A P P L I C A B L E L A W S A N D
REG U L AT I O NS S HAL L A P P LY.
Keep clear of suction and
discharge openings. Do not
insert fingers in pump with
power connected; the rotating cutter
and/or impeller can cause serious
injuty.
Always wear eye protection
when working on pumps. Do
not wear loose clothing that
may become entangled in moving
parts.
Pumps build up heat
and pressure during
operation. Allow time
fo r p u mp s t o c o o l
DANGER
before handling or servicing the
p u m p o r a ny a c c e s s o r y i t e m s
associated with or near the pump.
Risk of electric shock. To
reduce risk of electric shock,
always disconnect pump
from power source before
DANGER
handling any aspect of the pumping
system. Lock out power & tag.
Do not lift, carry or
hang pump by the electrical
c a b l e s . D a m a g e t o t he
electrical cables can cause
DANGER
shock, burns or death. Never handle
connected power cords with wet
hands. Use appropriate lifting device.
Failure to permanently
ground the pump, motor and
controls before connecting
to power can cause shock,
DANGER
burns or death.
The Uniform Plumbing
Code (UPC) states that sewage
systems shall have an audio and visual
alarm that signals a malfunction of the
systems, that are required to reduce
the potencial for property damage.
WARNING
IMPORTANT! - Prior to installation,
record Model Number, Serial, Amps,
Voltage, Phase and HP from pump
name plate for the future reference.
Also record the Voltage and Current
Readings at Startup:
WARNING
Indicates an immi-
nently hazardous situation which, if
not avoided, WILL result in death or
serious injury.
Indicates an immi-
nenty hazardous situation which, if
not avoided, MAY result in death or
serious injury.
Indicates a potentially
hazardous situation which, if not
avoided, MAY result in minor or
moderate injury.
DANGER
CAUTION
T h i s p u m p i s n o t
i n t e n d e d f o r u s e i n
swimming pools or water
installations where there is
DANGER
human contact with pumped fluid.
These pumps are not to
be installed in locations
classified as hazardous in
accordance with the National
Electric Code, ANSI/NFPA 70.
DANGER
Model Number:_____________________
Serial:_____________________________
Amps:___________ Volts:____________
Phase:____________ HP:_____________
General Safety Information
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1

4Specifications
DISCHARGE: 2" (5.08 cm) NPT female, vertical, bolt on flange. Lost-wax casting 304 AISI stainless
steel.
LIQUID TEMPERATURE: 104 °F (40 °C) .
PUMP CASING: 304 AISI stainless steel.
MOTOR HOUSING: 304 AISI stainless steel.
OIL CHAMBER: 304 AISI stainless steel.
IMPELLER: 8 vane, semi-open. 304 AISI stainless steel.
SHAFT: 304 AISI stainless steel.
HARDWARE: 304 AISI stainless steel.
O-RINGS: Buna-N®.
SEAL: Dual, mechanical, oil filled chamber. Upper part of carbon-ceramic, lower part of
silicon carbide. Stainless steel hardware.
CORD ENTRY: 32 ft of neoprene cord , sealed against moisture.
BEARINGS: Ball, single row, permanently oil lubricated.
MOTOR: Dry type submersible motor, 1 & 3 phase, 115 & 230 V, 60 Hz, 3450 RPM. Insulation
class B and IP68 protection class.
SHAFT-SEAL
LUBRICATION OIL: Turbine No. 32 ISO VG-32.
HANDLE: 304 AISI stainless steel and Buna-N®.
2
ft GPM ft GPM
2KLEIN-051 70090121 0.5 115 1 6.6 3450 26 30 33 61
2KLEIN-101 70090123 1 115 1 12 3450 33 55 62.4 82
2KLEIN-102 70090124 1 230 1 6 3450 33 55 62.4 82
2KLEIN-202 70090125 2 230 1 13 3450 43 80 65.5 153
2KLEIN-204 70090128 2 460 3 4 3450 43 80 65.5 153
MODEL PART No. HP RATED MAX. VOLTS PH AMPS RATED
RPM
2KLEIN-203 70090127 2 230 3 8 3450 43 80 65.5 153
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3
H
H1
L.W.L.
ØA
A1
DN D1
D
40.5 - 1 HP
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42 HP
ØA
A1
HH2
H1 L.W.L.
DN D1
D
HP A A1 D D1 DN H H1 H2
0.5 7.4 2.05 4.13 3.35 2" 13.58 2.05 -
1 7.4 2.05 4.13 3.35 2" 14.57 2.05 -
2 8.86 2.05 4.13 3.35 2" 17.91 3.19 17.17
* Weight without cord.
- Dimensions in inches.
- L.W.L.: lowest running water level.
WEIGHT
(lb)
31
38
55
4Dimensional drawings

1. Introduction
Purpose of this manual
The purpose of this manual is to provide necessary information for:
ŸInstallation
ŸOperation
ŸMaintenance
CAUTION
Read this manual carefully before installing and using the product. Improper use of the product can cause
personal injury and damage to property, and may void the warranty.
1.1 Safety terminology and symbols
About safety messages
It is extremely important that you read, understand, and follow the safety messages and regulations carefully before
handling the product. They are published to help prevent these hazards:
ŸPersonal accidents and health problems
ŸDamage to the product
ŸProduct malfunction
Hazard levels
NOTICE
Save this manual for future reference, and keep it readily available at the location of the unit.
Hazard level Indication
NOTICE
DANGER
WARNING
CAUTION
A hazardous situation which, if not avoided, will
result in death or serious injury.
A hazardous situation which, if not avoided, could
result in death or serious injury.
A hazardous situation which, if not avoided, could
result in minor or moderate injury.
Ÿ A potential situation which, if not avoided, could
result in undesirable conditions.
Ÿ A practice not related to personal injury.
Hazard categories
Hazard categories can either fall under Hazard levels or let specific symbols replace the ordinary hazard level symbols.
Electrical hazards are indicated by the following specific symbol:
ELECTRICAL HAZARD
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4

1.2 Product warranty
Coverage
BARMESA undertakes to remedy the following faults in products sold by the manufacturer under the following
conditions:
ŸThe faults are due to defects in design, materials or workmanship.
ŸThe faults are reported to the manufacturer representative within the warranty period.
ŸThe product is used only under the conditions described in this manual.
ŸThe monitoring equipment incorporated in the product is correctly connected and in use.
ŸAll service and repair work is done by personnel authorized by the manufacturer.
ŸGenuine manufacturer parts are used.
Limitations
The warranty does not cover faults caused by the following:
ŸDeficient maintenance.
ŸImproper installation.
ŸModifications or changes to the product and installation carried out without consulting the manufacturer.
ŸIncorrectly executed repair work.
ŸNormal wear and tear.
BARMESA assumes no liability for the following:
ŸBodily injuries.
ŸMaterial damages.
ŸEconomic losses.
Warranty claim
BARMESA products are high-quality products with expected reliable operation and long life. However, should the need
arise for a warranty claim, please contact a BARMESA representative.
Spare parts
We guarantee that spare parts will be available for 10 years after the manufacture of this product has been
discontinued.
NOTICE
When purchasing pump parts, please provide product code showed at the nameplate.
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5

1.3 Safety
WARNING
ŸThe operator must be aware of safety precautions to prevent physical injury.
ŸAny pressure-containing device can explode, rupture or discharge its contents if it is over-pressurized.
Take all necessary measures to avoid over-pressurization.
ŸOperating, installing or maintaining the unit in any way that is not covered in this manual could cause
death, serious personal injury, or damage to the equipment. This includes any modification to the
equipment or use of parts not provided by the manufacturer. If there is a question regarding the
intended use of the equipment, please contact a BARMESA representative before proceeding.
ŸThis manual clearly identifies accepted methods for disassembling units. These methods must be
adhered to. Trapped liquid can rapidly expand and result in a violent explosion and injury. Never apply
heat to impellers, propellers or their retaining devices to aid in their removal.
ŸDo not change the service application without the approval of an authorized BARMESA representative.
CAUTION
You must observe the instructions contained in this manual. Failure to do so could result in physical injury,
damage, or delays.
1.4 User safety
General safety rules
ŸAlways keep the work area clean.
ŸPay attention to the risks presented by gas and vapors in the work area.
ŸAvoid all electrical dangers. Pay attention to the risks of electric shock or arc flash hazards.
ŸAlways bear in mind the risk of drowning, electrical accidents, and burn injuries.
NOTICE
Never operate a unit unless safety devices are installed. Also see specific information about safety devices
in other chapters of this manual.
Electrical connections
These must be made by certified electricians in compliance with all intemational, national, state, and local regulations.
For more information about requirements, see sections dealing specifically with electrical connections.
1.5 Enviromental safety
The work area
Always keep the station clean to avoid and/or discover emissions.
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6

Waste and emissions regulations
Observe these safety regulations regarding waste and emissions:
ŸDispose appropriately of all waste.
ŸHandle and dispose of the processed liquid in compliance with applicable environmental regulations.
ŸClean up all spills in accordance with safety and environmental procedures.
ŸReport all environmental emissions to the appropriate authorities.
Electrical installation
For electrical installation recycling requirements, consult your local electric utility.
Recycling guidelines
Always recycle according to the guidelines listed below:
ŸFollow local laws and regulations regarding recycling if the unit or parts are accepted by an authorized recycling
company.
ŸIf the first guideline is not applicable, then retum the unit or parts to the nearest BARMESA representative.
2. Prior to operation
Check the following points upon receipt of your pump.
ŸIs it the pump you ordered? Check nameplate. It is especially important that you check whether the pump is to be
used with 50 or 60 Hz.
ŸHas any damage occurred during shipment? Are any bolts or nuts loose?
ŸHave all necessary accessories been supplied? For a list of standard accessories see drawing and parts list.
3. Installation
Check the following before beginning installation:
3.1 Insulation resistance measurement
With the motor and cable (excluding the power supply cable) immersed in water, use a megger to measure the
insulation resistance between ground and each phase of the motor, and again between each phase of the motor.
The megger should indicate an insulation resistance of not less than 20 megaohms. While making the measurement,
keep the power supply cable off the ground.
NOTICE
We recommend that an auxiliary pump be kept on hand in case of emergency.
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7

3.2 Installation
Attach a chain or rope to the grip and install the pump.
This pump must not be installed on its side or operated a dry condition. Ensure that it is installed upright on a
secure base.
Install the pump at a location in the tank where there is the least turbulence.
If there is a flow of liquid inside the tank, support the piping where appropriate. Install piping so that air will not be
entrapped. If piping must be installed in such a way that air pockets are unavoidable, install an air release valve
wherever such air pockets are most likely to develop.
Do not permit end of discharge piping to be submerged, as backflow will result when the pump is shut down.
Non‐automatic pumps do not have an automatic operating system. Do not operate the pump for a long time with
the water level near the minimum operating level (L.W.L.) as shown in Fig.1, as the automatic cut‐off switch
incorporated inside the motor will be activated. To avoid dry operation, install an automatic operating system so
that this will not happen, as shown in Fig.2, and maintain a safe operating water level.
WARNING
Under no circumstances should cable be pulled while the pump is being transported or installed.
4
Figure 1 Figure 2
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8

4. Electrical wiring
4.1 Wiring
1. Wire as indicated for the appropriate start system as shown in Fig-3 & 4 for single phase version and Fig-5 for three
phase.
2. Loose connections will stop the pump. Make sure all electrical connections are secure.
3. For three phase motors, operate the pump for a short time (1 or 2 seconds) to verify the impeller’s direction of
rotation: if its recoil is in counterclockwise direction, then it is correct. If not please switch two of the three power
cords to correct the rotation of direction of the impeller.
4. Make sure to check the pump’s direction of rotation with the pump exposed to the atmosphere.
5. Operating the pump with reversed rotation while in submerged condition under water will most likely damage the
pump, which may lead to leakage and electrical shock.
WARNING
ŸElectrical shock hazard. Check that the cable and cable entry have not been damaged during transport
before installing the pump.
ŸNever let the end of the cable touch water.
ŸUse short circuit breakers to prevent danger of electrical shock.
ŸNever start the pump while it is suspended, as the pump may jerk and cause serious accident involving
injury.
4.2 Cable
1. If the cable is extended, do not immerse the splice in water.
2. Do not pull the cable.
3. Install the cable so that it will not overheat. Overheating is caused by coiling the cable and exposing it to direct
sunlight.
4.3 Grounding
ELECTRICAL HAZARD
ŸYou must ground all electrical equipment. This applies to the pump equipment, the driver and any
monitoring equipment. Test the ground lead to verify that it is connected correctly.
ŸIf the motor cable is jerked loose by mistake, the ground conductor should be the last conductor to
come loose from its terminal. Make sure that the ground conductor is longer than the phase
conductors. This applies to both ends of the motor cable.
ŸRisk of electrical shock or burn. You must connect an additional ground fault protection device to the
grounded connectors if persons are likely to come into physical contact with the pump or pumped
liquids.
WARNING
To prevent damaging the pump and causing current leakage, which may lead to electrical shock, be sure to
install the ground wire securely.
CAUTION
To prevent electrical shock caused by improper grounding, do not connect the ground wire to a gas pipe,
water pipe, lightning rod, or telephone ground wire.
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9

Figure 3
Single phase
(non-automatic)
L
N
PE
Black
(Brown)
White
(Blue)
Green
(Yellow/
Green)
Ground
Thermal protector
Frame grounding
(Green/Yellow)
Main
Auxiliary
Capacitor
Single phase
(automatic)
L
N
PE
Black
(Brown)
White
(Blue)
Green
(Yellow/
Green)
Ground
PE
(Green/Yellow)
(Green/Yellow)
Frame grounding
Thermal
protector
Main
Auxiliary
Capacitor
Float switch
Figure 4
Three phase
R
S
T
Frame grounding
(Green/Yellow)
Ground
PE
Red
White
Black
Green
(Yellow/
Green)
U
V
W
U2
V2
W2
Overload protector
Figure 5
Electric circuit diagrams
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10

5. Operation
5.1 Before starting the pump
1. After completing installation, measure the insulation resistance again as described in Installation section.
2. If the pump is operated continuously for an extended period of time in a dry condition or at the lowest water level, the
motor protector will be activated. Constant repetition of this action will shorten pump service life. Do not start the
pump again in such a situation until after the motor has completely cooled.
5.2 Operation test
1. Turn the operating switch on and off a couple of times to check for normal pump start.
6. Maintenance
Check pressure, output, voltage, current and other specifications. Unusual readings may indicate a pump failure. Refer
to Troubleshooting and correct as soon as possible.
6.1 Daily inspections
Check current and ammeter fluctuation daily. If ammeter fluctuation is high, even though within the limits of pump
rating, foreign matter may be clogging the pump. If the discharged amount of liquid suddenly falls, foreign matter may
be blocking the inlet suction.
6.2 Regular inspections
a. Monthly inspections
Measure the insulation resistance. The value should be more than 1 megaohm. If resistance starts to fall rapidly even
with an initial indication of over 1 MΩ, this may be an indication of a pump failure and repair work is required.
b. Annual inspections
To prolong the service life of the mechanical seal by replacing the oil in the mechanical seal chamber once a year. Water
mixed the oil or cloudy textures are indications of a defective mechanical seal requiring replacement. When replacing
the oil, lay the pump on its side with filler plug on top. Fill suitable amount lubricating oil No. 32.
c. Inspections at 3-5 year intervals
Conduct an overhaul of the pump. These intervals will help to avoid possible failures in the future.
6.3 Parts need to be replaced
Replace the appropriate part when the following conditions appear:
REPLACEABLE
PART Mechanical seal Oil filler plug
gasket Lubricating oil O-ring
REPLACEAMENT
GUIDE
Whenever oil in
mechanical seal
chamber is
clouded
Whenever oil is
replaced or
inspected
Whenever
clouded or dirty
Whenever pump
is overhauled
FREQUENCY Annually Every 6 months Every 6 months Annually
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11

DANGER
Disconnect and lock out electrical power before installing or servicing the unit.
WARNING
A worn impeller and/or pump housing can have very sharp edges. Wear protective gloves.
CAUTION
Make sure to perform a trial operation when starting the pump after a reassembly. If the pump was
assembled improperly, it may lead to abnormal operation, electrical shock or water damage.
7. Disassembly and reassembly procedure
7.1 Disassembly
When disassembling the pump, have a piece of cardboard or wooden board ready to place the different parts on as you
work. Do not pile parts on top of each other, they should be laid out neatly in rows.
The "O” ring and gasket cannot be used again once they are removed. Have replacement parts ready.
Disassemble in the following order, referring to the exploded view drawings.
1. Remove pump casing bolts, raise the motor section and remove pump casing.
2. Remove shaft head bolt and impeller.
3. Remove oil filler plug and drain lubricating oil.
4. Remove intermediate casing bolts and oil chamber. Remember that any lubricating oil remaining in the
mechanical seal chamber will flow out.
5. Carefully remove mechanical seal, beware of not to scratch sliding surface of motor shaft.
7.2 Assembly
Re-assemble in reverse order of disassembly. Be careful of the following points:
a. During re-assembly, rotate the impeller by hand and check for smooth rotation. If rotation is not smooth, perform
steps 3 through 5 again.
b. Upon completion of re-assembly, rotate the impeller by hand from the suction inlet and check that it rotates
smoothly without touching the suction cover before operating the pump.
Please order “O” rings, packing, shaft seals and other parts from your dealer.
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12

40.5 - 1 HP
13
ITEM NAME MATERIAL
18 GASKET EPDM
18‐1 GASKET EPDM
18‐2 GASKET EPDM
19 SCREW AISI 304
19‐1 SCREW AISI 304
19‐2 SCREW AISI 304
19‐3 SCREW AISI 304
19‐4 SCREW AISI 304
19‐5 SCREW AISI 304
19‐6 SCREW AISI 304
19‐7 SCREW STEEL
ITEM NAME MATERIAL
19-10 SCREW AISI 304
20 WASHER AISI 304
22 SCREW W/ O-RING AISI 304 / NBR
23 CABLE SEAT -
26 T ADAPTER (OPTIONAL) -
31 NUT AISI 304
31-2 NUT AISI 304
33 SPRING WASHER AISI 304
34 CORRUGATED SPRING STEEL
35 SLEEVE AISI 304
36 KEY AISI 304
18-1
19-2
3
18-2
4
35
36
6
5
22
19
19-1
1
2
33
17-1 9
8
7
18-4
11
12
19-3
20
16
31
30
22
13
19-4
10
15-1
31-2
19-10
21
26 19-1
23
19-6
19-10
31-2
14
23
20
31
33
27
18
34
19-7
19-5
33
15-2
17-2
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40.5 - 1 HP
ITEM NAME MATERIAL PHOTO
1CABLE
H07RN‐F/
SJTOW/
STOW
2 HANDLE
AISI 304
+
NBR
3 MOTOR COVER AISI 304
4 BRACKET EN-GJL-200
5
MOTOR HOUSING
+
STATOR
AISI 304
6SHAFT WITH
ROTOR AISI 304
7 OIL CHAMBER AISI 304
8MECHANICAL
SEAL
CA/CE
+
SIC/SIC
9 SEAL HOUSING AISI 304
10 LIP SEAL NBR
11 IMPELLER AISI 304
ITEM NAME MATERIAL PHOTO
12 PUMP CASING AISI 304
13 PROTECTOR
(1 PHASE) KLIXON
13 PROTECTOR
(3 PHASE) KLIXON
14 CAPACITOR -
15-1
15-2 BEARINGS -
16 STRAINER AISI 304
17-1
17-2 O-RING NBR
18-4 VOLUTE LINER EPDM
21 FLOAT SWITCH
(OPTIONAL) -
27 FLANGE AISI 304
30 OUTER HOUSING AISI 304
For repair part please supply: Model Number and Serial as shown on Name Plate, and Part Description and Part Number as shown
on Parts List.
14
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42 HP
15
ITEM NAME MATERIAL
22 SCREW W/ O-RING AISI 304 / NBR
23 CABLE SEAT -
26 T ADAPTER (OPTIONAL) -
29 INSULATION PAPER -
31-1 NUT AISI 304
31-2 NUT AISI 304
33 SPRING WASHER AISI 304
33-1 SPRING WASHER AISI 304
34 CORRUGATED SPRING STEEL
35 SLEEVE AISI 304
36 KEY AISI 304
ITEM NAME MATERIAL
18‐1 GASKET EPDM
18‐2 GASKET EPDM
19 SCREW AISI 304
19‐1 SCREW AISI 304
19‐2 SCREW AISI 304
19‐3 SCREW AISI 304
19‐4 SCREW AISI 304
19‐5 SCREW AISI 304
19‐6 SCREW AISI 304
19‐7 SCREW STEEL
19‐10 SCREW AISI 304
20 WASHER AISI 304
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19-1
1
31-2
19-10
33 19
2
30
18-1
14
13
19-7
21
26 19-1
2319-6
19-10
31-2
3
19-2
18-2
22
34
4
5
6
7
8
9
10
11
12
16
19-4
15-2
15-1
18-4
22
19-5
19-3
31-1
33-1
20
35
36
29
30-1
17-1
17-2

42 HP
ITEM NAME MATERIAL PHOTO
1 CABLE
H07RN‐F/
SJTOW/
STOW
2 HANDLE AISI 304
3 MOTOR COVER AISI 304
4 BRACKET EN-GJL-200
5
MOTOR HOUSING
+
STATOR
AISI 304
6SHAFT WITH
ROTOR AISI 304
7 OIL CHAMBER AISI 304
8MECHANICAL
SEAL
CA/CE
+
SIC/SIC
9 SEAL HOUSING AISI 304
10 LIP SEAL NBR
11 IMPELLER AISI 304
ITEM NAME MATERIAL PHOTO
12 PUMP CASING AISI 304
13 PROTECTOR
(1 PHASE) KLIXON
13 PROTECTOR
(3 PHASE) KLIXON
14 CAPACITOR -
15-1
15-2 BEARINGS -
16 STRAINER AISI 304
17-1
17-2 O-RING NBR
18-4 VOLUTE LINER EPDM
21 FLOAT SWITCH
(OPTIONAL) -
30 OUTER HOUSING
2" AISI 304
30 OUTER HOUSING
3" AISI 304
For repair part please supply: Model Number and Serial as shown on Name Plate, and Part Description and Part Number as shown
on Parts List.
16
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NOTE: Barmesa Pumps assumes no responsibility for damage or injury due to disassembly in the field. Disassembly of the pumps or supplied accessories other
than at Barmesa Pumps or its authorized service centers, automatically voids warranty.
Risk of electric shock. Always disconnect the pump from the power source before handling inspections or repairs.
Symptom Possible Cause(s) Corrective Action
Does not start. Starts,
but imediately stops.
(1) Power failure
(2) Large discrepancy between power
source and voltage
(3) Significant drop in voltage
(4) Motor phase malfunction
(5) Electric circuit connection faulty
(6) Faulty connection of control circuit
(7) Fuses is blown
(8) Faulty magnetic switch
(9) Water is not at level indicated by float
(10) Float is not in appropriate level
(11) Float is not effective
(12) Short circuit breaker is functioning
(13) Foreign matter clogging pump
(14) Motor burned out
(15) Motor bearing broken
(1)~(3) Contact electric power company
and devise counter-measures
(4) Inspect electric circuit
(5) Correct wiring
(6) Inspect connections and magnetic coil
(7) Check circuit then replace fuse
(8) Replace with correct one
(9) Raise water level
(10) Adjust the position of float
(11) Repair or replace
(12) Repair location of short circuit
(13) Remove foreign matter
(14) Repair or replace
(15) Repair or replace
Operates, but stops
after a while.
(1) Prolonged dry operation has activated
motor protector and caused pump to stop
(2) High liquid temperature has activated
motor protector and caused pump to stop
(3) Reverse rotation
(1) Raise water level to C.W.L.
(2) Lower liquid temperature
(3) Correct rotation
Does not pump.
Inadequate volume.
(1) Reverse rotation
(2) Significant drop in voltage
(3) Operating a 60 Hz pump with 50 Hz
(4) Discharge head is high
(5) Large piping loss
(6) Low operating water level causes air
suction
(7) Leaking from discharge piping
(8) Clogging of discharge piping
(9) Foreign matter in suction inlet
(10) Foreign matter clogging pump
(11) Worn impeller
(1) Correct rotation (see Operation)
(2) Contact electric power company
(3) Check nameplate
(4) Recalculate and adjust
(5) Recalculate and adjust
(6) Raise water level or lower pump
(7) Inspect, repair
(8) Remove foreign matter
(9) Remove foreign matter
(10) Remove foreign matter
(11) Replace impeller
Over current.
(1) Unbalanced current and voltage
(2) Significant voltage drop
(3) Motor phase malfunction
(4) Operating 50 Hz pump on 60 Hz
(5) Reverse rotation
(6) Low head. Excessive volume of water
(7) Foreign matter clogging pump
(8) Motor bearing is worn out or damaged
(1) Contact electric power company
(2) Contact electric power company and
devise counter-measure
(3) Inspect connections and magnetic
switch
(4) Check nameplate
(5) Correct rotation (see Operation 2)
(6) Replace pump with high head pump
(7) Remove foreign matter
(8) Replace bearing
Pump vibrates;
excessive operating
noise.
(1) Reverse rotation
(2) Pump clogged with foreign matter
(3) Piping resonates
(4)Strainer is closed too far
(1) Correct rotation
(2) Disassemble and remove foreign
matter
(3) Improve piping
(4) Open strainer
8. Troubleshooting
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