BJM Pumps LWA75H-575T User Manual
CAST IRON w/ STAINLESS SHELL
SINGLE PHASE
THREE PHASE
LWA1500
LWA2200
LWA15
LWA22
LWA37
LWA55
LWA55H
LWA75
LWA75H
INSTALLATION, OPERATION & MAINTENANCE MANUAL
LWA SERIES
TOP DISCHARGE
Electric Submersible Pumps
Single Phase
230V
Three Phase
230V, 460V & 575V
Read this manual carefully before installing, operating or servicing these pump models.
Observe all safety information. Failure to comply with instructions may result in personal
injury and/or property damage. Please retain these instructions.
Version 2/3/2014
TABLE OF CONTENTS
INTRODUCTION ............................................................................................................................................................ 4
SAFETY ......................................................................................................................................................................... 4
INSPECTION ................................................................................................................................................................. 5
PRE-INSTALLATION INSPECTION ......................................................................................................................... 5
OIL FILL QUANTITY/TYPE ....................................................................................................................................... 5
PUMP INSTALLATION ............................................................................................................................................. 6
POSITIONING THE PUMP ....................................................................................................................................... 6
PUMP ROTATION .................................................................................................................................................... 7
PUMP OPERATION ....................................................................................................................................................... 8
TYPICAL MANUAL DEWATERING INSTALLATION ..................................................................................................... 8
STOPPING ................................................................................................................................................................ 9
TYPICAL AUTOMATIC DEWATERING INSTALLATION .............................................................................................. 9
STOPPING .............................................................................................................................................................. 10
INTENDED METHODS OF CONNECTION ................................................................................................................. 10
SINGLE & THREE PHASE WIRING INSTRUCTIONS ........................................................................................... 10
TROUBLE SHOOTING ................................................................................................................................................ 12
PUMP WILL NOT RUN ........................................................................................................................................... 12
PUMP RUNS BUT DOES NOT DELIVER RATED CAPACITY ............................................................................... 12
SERVICING YOUR SUBMERSIBLE PUMP............................................................................................................ 13
MAINTAINING YOUR PUMP .................................................................................................................................. 13
CHANGING SEAL OIL ............................................................................................................................................ 14
DISASSEMBLY/ASSEMBLY PROCEDURE FOR LWA TO REVIEW/REPLACE THE MECHANICAL SEAL ........ 14
EXPLODED VIEW LWA1500 & 2200 .......................................................................................................................... 16
EXPLODED VIEW LWA15, 22 ..................................................................................................................................... 17
EXPLODED VIEW LWA37 ........................................................................................................................................... 18
EXPLODED VIEW LWA55 ........................................................................................................................................... 19
EXPLODED VIEW LWA55H ................................ ................................ ........................................................................ 20
EXPLODED VIEW LWA75 ........................................................................................................................................... 21
EXPLODED VIEW LWA75H ................................ ................................ ........................................................................ 22
LWA SERIES PARTS LIST .......................................................................................................................................... 23
SINGLE PHASE WIRING DIAGRAM 230V ................................................................................................................. 25
THREE PHASE WIRING DIAGRAM 230V DUAL VOLTAGE ................................ ...................................................... 26
MODELS LWA15-75H ........................................................................................................................................ 26
THREE PHASE WIRING DIAGRAM 460V DUAL VOLTAGE ................................ ...................................................... 27
MODELS LWA15-75H ........................................................................................................................................ 27
WARRANTY AND LIMITATION OF LIABILITY ............................................................................................................ 29
START-UP REPORT FORM ........................................................................................................................................ 30
NOTES: ........................................................................................................................................................................ 33
4
INTRODUCTION
This Installation, Operation and Maintenance manual provides important information on
safety and the proper inspection, disassembly, assembly and testing of the BJM
Pumps® LWA™ Series submersible pump. This manual also contains information to
optimize performance and longevity of your BJM Pumps submersible pump.
The submersible LWA Series pumps are designed to pump water and light water
slurries. The LWA Series pumps are not explosion-proof. They are not designed
to pump volatile or flammable liquids.
Note: Consult chemical resistance chart for compatibility between pump
materials and liquid before operating pump.
If you have any questions regarding the inspection, disassembly, assembly or testing
please contact your BJM Pumps distributor, or BJM Pumps, LLC.
BJM Pumps, LLC
123 Spencer Plain Rd.
Old Saybrook, CT 06475, USA
Fax: 860-399-7784
Phone: 877-256-7867
Phone: 860-399-5937
Information, including pump data sheets and performance curves, is also available on
our web site: www.bjmpumps.com
For assistance with your electric power source, please contact a certified electrician.
Please pay attention to the following alert notifications. They are used to notify
operators and maintenance personnel to pay special attention to procedures, to avoid
causing damage to the equipment, and to avoid situations that could be dangerous to
personnel.
NOTE: Instructions to aid in installation, operation, and maintenance or which
clarify a procedure.
Immediate hazards that WILL result in severe personal injury or
death. These instructions describe the procedure required and the injury which will
result from failure to follow the procedure.
Hazards or unsafe practices that COULD result in severe personal
injury or death. These instructions describe the procedure required, and the injury which
could result from failure to follow the procedure.
Hazards or unsafe practices which COULD result in personal injury
or product or property damage. These instructions describe the procedure required and
the possible damage which could result from failure to follow the procedure.
4
SAFETY
Pump installations are seldom identical. Each installation and application can vary due
to many different factors. It is the owner/service mechanics responsibility to repair,
service, and test to ensure that the pump integrity is not compromised according to this
manual.
Risk of electric shock – this pump has not been investigated for use
in swimming pool areas.
Do not pump flammable or volatile liquids. Death or serious
injury will result.
Before attempting to open or service the pump:
1) Familiarize yourself with this manual.
2) Unplug or disconnect the pump power cable to ensure that the pump will remain
inoperative.
3) Allow the pump to cool if overheated.
Do not operate the pump with a worn or damaged electric power
cable. Death or serious injury could occur.
Never attempt to alter the length or repair any power cable with a
splice. The pump motor and pump motor and cable must be completely waterproof.
Damage to the pump or personal injury may result from alterations.
After the pump has been installed, make sure that the pump and all
piping are secure before operation.
Do not lift the pump by the power cable piping or discharge hose.
Attach proper lifting equipment to the lifting handle (or lifting rings) fitted to the pump. Do
not suspend the pump by the power cable.
Obtain the services of a qualified electrician to troubleshoot, test
and/or service the electrical components of this pump.
Pumps and related equipment must be installed and operated
according to all national, local and industry standards/codes.
5
Pump Models
Qty. oil in seal chamber
Type of oil
(U.S. fl. oz.)
Metric C.C.
LWA1500
21
620
ISO 32 NSF Food Grade Mineral Oil
LWA15
21
620
ISO 32 NSF Food Grade Mineral Oil
LWA2200
21
620
ISO 32 NSF Food Grade Mineral Oil
LWA22
21
620
ISO 32 NSF Food Grade Mineral Oil
LWA37
21
620
ISO 32 NSF Food Grade Mineral Oil
LWA55, LWA55H
28.8
850
ISO 32 NSF Food Grade Mineral Oil
LWA75, LWA75H
28.8
850
ISO 32 NSF Food Grade Mineral Oil
INSPECTION
Review all safety information before servicing pump.
The following are recommended installation practices/procedures for the pump. If there
are questions in regards to your specific application, contact your local BJM Pumps
distributor or BJM Pumps, LLC.
PRE-INSTALLATION INSPECTION
1) Check the pump for damage that may have occurred during shipment.
2) Inspect the pump for any cracks, dents, damaged threads, etc.
3) Check power cord for any cuts or damage.
4) Check for, and tighten any hardware that appears loose.
5) Carefully read all tags, decals and markings on the pump.
If anything appears to be abnormal, contact your BJM Pumps distributor or BJM
Pumps, LLC. If damaged, the pump may need to be repaired before use. Do not install
or use the pump until appropriate action has been taken.
Lubrication:
No additional lubrication is necessary. The shaft seal and bearings are fully lubricated
from the factory. Seal oil should be checked once per year. See table below.
OIL FILL QUANTITY/TYPE
6
PUMP INSTALLATION
LWA Series pumps have been evaluated for use with water or water based solutions.
Please contact the manufacturer for additional information.
Risk of electric shock. All LWA Pump models; do not come with
electric plug connectors. To reduce the risk of electric shock, be certain that it is
connected only to a properly grounded, grounding-type receptacle or terminal box
control.
Lifting:
Attach a rope or lifting chain (not included) to the handle (or lifting rings) on the top of
the pump.
Do not lift the pump by the power cable or discharge hose/piping.
Proper lifting equipment (rope/chain) must be used.
POSITIONING THE PUMP
BJM Pumps, LWA Series pumps are designed to operate fully or partially submerged.
Do not run the pump dry. Refer to data sheet for minimum submersion depth for your
particular model. Data sheets can be obtained online at www.bjmpumps.com or by
calling BJM Pumps, LLC at 860-399-5937. As a general rule, LWA Series top discharge
pumps can pump down to a level above the suction screen. Pumping lower than screen
will permit air to enter the pump and cavitate, lose prime or become air bound.
Do not run the pump dry.
Pump liquid should not exceed a maximum temperature of 104°F.
Never place the pump on loose or soft ground. The pump may sink, preventing
water from reaching the impeller. Place on a solid surface or suspend the pump
with a lifting rope/chain. The LWA Series pumps are provided with a suction
strainer to prevent large solids from clogging the impeller. Any spherical solids
which pass through the strainer should pass through the pump.
For maximum pumping capacity, use the proper size non-collapsible hose or rigid
piping. A check valve may be installed after the discharge to prevent back flow
when the pump is shut off.
7
PUMP ROTATION
Two ways to check the correct pump rotation:
1. By looking at the impeller; the rotation of the impeller should be counter
clockwise as shown in the picture below.
2. By looking from the top of the pump. Since the impeller cannot be seen, the best
way to check the rotation is to check the kick back motion of the pump when the
pump just starts. The kick back motion of the pump should be counter clockwise
as shown in the picture below.
8
PUMP OPERATION
This pump is designed to handle dirty water that contains some
solids. It is not designed to pump volatile or flammable liquids. Do not attempt to pump
any liquids which may damage the pump or endanger personnel as a result of pump
failure.
Do not operate this pump where explosive vapors or
flammable material exist. Death or Serious injury will result.
TYPICAL MANUAL DEWATERING INSTALLATION
NOTE: Maximum recommended starts should not exceed 10 times per hour.
LWA models are provided with a 50’ (10 m) power cord. NEVER splice the power cable
due to safety and warranty considerations. Always keep the power supply connection
end dry.
Note: 230V, single phase and 230V, 460V & 575V three phase units do not have a
plug and have to be provided separately or connection made to a proper
termination control box.
Typical 3 phase manual control 1
Do not alter the length or repair any power cable with a splice. The
pump motor and cable must be completely waterproof. Damage to the pump or
personal injury may result from alterations.
For manual operation: Attach the proper plug or connect directly to the power source or
control box. Check the direction of the rotation on 3 phase models. Tilt the pump and
start it. It should twist in the opposite direction of the arrow (on pump). It is
9
recommended that a Ground Fault Interrupter (GFI) type receptacle (or equivalent) be
used.
STOPPING
To stop the pump (manual and automatic mode), turn off the breaker, or turn the power
source off (generator).
TYPICAL AUTOMATIC DEWATERING INSTALLATION
NOTE: Maximum recommended starts should not exceed 10 times per hour.
All LWA Pumps require a separate control box with float(s) for automatic
operation.
10
STOPPING
To stop the pump (manual and automatic mode), turn off the breaker, or turn the power
source off (generator).
INTENDED METHODS OF CONNECTION
Use with approved motor control that matches motor input in full
load amperes.
SINGLE & THREE PHASE WIRING INSTRUCTIONS
FOR YOUR PROTECTION, ALWAYS DISCONNECT PUMP
FROM ITS POWER SOURCE BEFORE HANDLING.
“Risk of electrical shock” Do not remove power supply cord and
strain relief or connect conduit directly to the pump.
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