End gun booster
Installation and operating instructions
GRUNDFOS INSTRUCTIONS
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English (US) Installation and operating instructions
CONTENTS
1. Limited warranty
2. Installation - mechanical
2.1 Pump identification
2.2 Receiving
2.3 Temporary storage
2.4 Location
2.5 Vertical mounting instructions
2.6 Mechanical seals
3. Installation-electrical
3.1 Motors general
3.2 Installation wiring
4. Operation
4.1 Priming
4.2 Pre-start checklist
4.3 Motor rotation
4.4 Starting the pump
4.5 Voltage regulation
4.6 Pump shutdown
4.7 Short duration shutdown
4.8 Extended period shutdown
5. Maintenance
5.1 Motor lubrication
5.2 Cross section and parts list for EB 20503-2
5.3 Cross section and parts list for EB 20501-5
5.4 Disassembly of pumps
5.4.1 Disassembly of liquid end
5.5 Reassembly of pumps
5.6 Ordering parts
5.7 Parts kit
Warnin g
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.
Warnin g
The use of this product requires experience with
and knowledge of the product. Persons with
reduced physical, sensory or mental
capabilities must not use this product, unless
they are under supervision or have been
instructed in the use of the product by a person
responsible for their safety. Children must not
use or play with this product.
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1. Limited warranty
Products manufactured by GRUNDFOS PUMPS CORPORATION
(Grundfos) are warranted to the original user only to be free of
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defects in material and workmanship for a period of 24 months
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from date of installation, but not more than 30 months from date
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of manufacture. Grundfos' liability under this warranty shall be
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limited to repairing or replacing at Grundfos' option, without
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charge, F.O.B. Grundfos' factory or authorized service station,
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any product of Grundfos' manufacture. Grundfos will not be liable
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for any costs of removal, installation, transportation, or any other
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charges which may arise in connection with a warranty claim.
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Products which are sold but not manufactured by Grundfos are
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subject to the warranty provided by the manufacturer of said
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products and not by Grundfos' warranty. Grundfos will not be
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liable for damage or wear to products caused by abnormal
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operating conditions, accident, abuse, misuse, unauthorized
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alteration or repair, or if the product was not installed in
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accordance with Grundfos' printed installation and operating
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instructions. To obtain service under this warranty, the defective
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product must be returned to the distributor or dealer of Grundfos'
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products from which it was purchased together with proof of
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purchase and installation date, failure date, and supporting
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installation data. Unless otherwise provided, the distributor or
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dealer will contact Grundfos or an authorized service station for
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instructions. Any defective product to be returned to Grundfos or
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a service station must be sent freight prepaid; documentation
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supporting the warranty claim and/or a Return Material
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Authorization must be included if so instructed. GRUNDFOS
WILL NOT BE LIABLE FOR ANY INCIDENTAL OR
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CONSEQUENTIAL DAMAGES, LOSSES, OR EXPENSES
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ARISING FROM INSTALLATION, USE, OR ANY OTHER
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CAUSES. THERE ARE NO EXPRESS OR IMPLIED
WARRANTIES, INCLUDING MERCHANTABILITY OR FITNESS
FOR A PARTICULAR PURPOSE, WHICH EXTEND BEYOND
THOSE WARRANTIES DESCRIBED OR REFERRED TO
ABOVE. Some jurisdictions do not allow the exclusion or
limitation of incidental or consequential damages and some
jurisdictions do not allow limit actions on how long implied
warranties may last. Therefore, the above limitations or
exclusions may not apply to you. This warranty gives you specific
legal rights and you may also have other rights which vary from
jurisdiction to jurisdiction.
English (US)
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English (US)
2. Installation - mechanical
All installations should be performed by personnel experienced
with the placement, connection, and alignment of pumping
equipment. The following instructions are general in nature, and
may not deal with the specifics of your installation. Read these
instructions thoroughly before installing and operating your
Grundfos type EB centrifugal pump. Keep these instructions
handy for future use.
2.1 Pump identification
All Grundfos Pumps are identified by Catalog and Serial
Numbers. These are stamped on the pump nameplate Fig. 1
affixed to each pump casing and should be referred to in all
correspondence with the Company.
Fig. 1 Nameplate
2.2 Receiving
Check pumping unit for shortages and damages immediately
upon arrival. Pump accessories, when required, are packaged in
a separate container and shipped with the unit. If equipment is
damaged in transit, immediately report the damage to the truck
line’s agent. Make a complete report on the freight bill to speed
satisfactory adjustment by the carrier. Unload and handle the
equipment with a sling or tow motor.
2.3 Temporary stora ge
If pump is not to be installed and operated soon after arrival, store
it in a clean, dry area of moderate ambient temperature. Rotate
the shaft by hand periodically to coat bearing with lubricant to
retard oxidation and corrosion. Follow motor manufacturer’s
storage recommendations where applicable.
2.4 Location
Locate the pump as close to the suction supply as possible. Use
the shortest and most direct suction piping practical. Locate the
pump below system level wherever possible. This will facilitate
priming, assure a steady liquid flow, and provide a positive
suction head. Make sure sufficient NPSH (Net Positive Suction
Head) is provided at the suction end by considering the pump’s
location in relation to the entire system. Available NPSH must
always equal or exceed required NPSH specified on the pump
performance curve. Always allow sufficient accessibility for
maintenance and inspection. Provide a clear space with ample
head room for use of a hoist strong enough to lift the unit. Make
sure a suitable power source is available for the pump motor.
Electrical characteristics should match those specified on the
motor data plate, within the limits covered in Sections 3 and 4.
Avoid pump exposure to sub-zero temperatures to prevent pump
liquid from freezing. If freezing conditions exist during shutdown
periods, see Sections 4.5 and 4.6 for specific recommendations.
2.5 Vertical mounting instructions
The Endgun booster is designed to be mounted vertically on a
2 ½ ” NPT nipple. It may also be mounted with a nipple and
companion flange on both the pump and t he pivot. The majority of
installations are threaded straight onto the nipple where the
suction must be the same size (no decrease in pipe size at
suction allowed). Discharge pipe size will be the same at the
pump or may be one or two sizes larger depending on the length.
Our pump unit is equipped of a wash down duty motor and may
be used in a variety of outdoor applications.
2.6 Mechanical seals
All Grundfos Type EB pumps that are equipped with mechanical
seals are matched to the conditions for which the pump was sold .
Observe the following precautions to avoid seal damage and
obtain maximum seal life. Do not exceed temperature or pressure
limitations for the mechanical seal used. Do not run the pump dry
or against a closed valve! Dry operation will cause seal failure
within minutes. Purge all air from the seal chambers and
recirculation lines prior to operating the pump. Clean and purge
suction piping in new installations before installing and operating
pump. Pipe scale, welding slag and other abrasives can cause
rapid seal failure.
TM 05 5591 3712
3. Installation-electrical
3.1 Motors general
The motor control circuit must have the following components in
order to comply with the National Electrical Code.
• Motor Disconnecting Device: A motor disconnecting device
must be installed that is capable of disconnecting both the
controller (motor starter) and the motor from their source of
power.
• The disconnecting device must be located so that the
controller (motor starter) can be seen from the disconnecting
means. In all cases, the distance from the disconnecting
device to the controller must be less than 50'.
• In most installations the disconnecting device will be a circuit
breaker or fusible disconnect switch.
• Motor short circuit and ground fault protection: Short circuit
and ground fault protection are usually provided by mean s of a
circuit breaker or fusible disconnect switch. The selection of
the size of the circuit breaker or fuse must be in accordance
with Section 430-52 and Table 430-152 of the National
Electrical Code.
• Motor controller with running over current protection (magnet ic
starter): These components must be installed in accordance
with applicable local and state electrical codes in addition to
the National Electrical Code.
Warnin g
Whenever powered equipment is being used in
explosive surroundings, the rules and
regulations generally or specifically imposed by
the relevant responsible authorities or trade
organizations must be observed.
3.2 Installation wiring
Mount the control panel or motor starter(s) in close proximity to
the pump to provide convenient control and ease of installation.
Wire panel or starter(s) to motor(s) and pilot device(s): Wires to
each motor must be sized for at least 125% of the motor
nameplate full load amps. AWG #16 Type THW stranded wire is
recommended for wiring of pilot devices (float switches). Check
incoming power source to ensure that it is the same as the
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