Pentair Aquatic Eco-Systems Verus 850 User manual

INSTALLATION AND
USER’S GUIDE
IMPORTANT SAFETY INSTRUCTIONS
READ AND FOLLOW ALL INSTRUCTIONS
SAVE THESE INSTRUCTIONS
AQUATIC ECO-SYSTEMS
VERUS™850
PREMUIM EFFICIENT AQUACULTURE DUTY PUMP
™

Important Warning and Safety Instructions
Section 1: Introduction ..........................................
Pump Overview/Features ..................................
Pump Dimensions .............................................
Pump Dimensions with Strainer Pot Assembly ..
Installation ..............................................................
Installing the Versus 850 Pump .........................
Mechanical Installation ......................................
Pressure Testing ................................................
Electrical Requirements ........................................
Electrical Requirements and Field Wiring .........
Initital Operation of Pump ....................................
Priming the Pump ..............................................
Maintenance ...........................................................
Cleaning the Strainer Basket .............................
Preventative Maintenance .................................
Servicing ...............................................................
Disassembling .................................................
Assembling ......................................................
Troubleshooting ...................................................
Replacement Parts ...............................................
Verus 805 Pump Parts List ..............................
Strainer Pot Assembly Parts List .....................
PumpTechnical Data ...........................................
Pump Curves ..................................................
Engineering Specifications .............................
If you have questions about ordering Pentair Aquatic Eco-Systems, Inc., replacement parts and products, please
use the following contact information:
CUSTOMER SERVICE / TECHNICAL SUPPORT
Customer Service
8 AM to 7 PM — Eastern and Pacific Times
US
Phone: [phone]
FAX: [phone]
International
Phone: [phone]
FAX: [phone]
TABLE OF CONTENTS
Web site
Visit www.pentairaes.com
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P/N 351761 Rev.A 2/24/13

Verus™ 850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Important Notice:
This guide provides installation and operation instructions for theVerus™ 850 Pump.
Consult Pentair Aquatic Eco-Systems™ with any questions regarding this equipment.
Attention Installer: This guide contains important information about the installation, operation and safe use of
this product. This information should be given to the owner and/or operator of this equipment after installation or left
on or near the pump.
Attention User: This manual contains important information that will help you in operating and maintaining this
pump. Please retain it for future reference. This pump is for use for aquaculture installations ONLY. Do not use with
any type of swimming pool, hot tub, or spa.
WARNING — Before installing this product, read and follow all warning notices and instructions which are
included. Failure to follow safety warnings and instructions can result in severe injury, death, or
property damage. Call [phone] (US) or [phone] (INT) for additional free copies
Consumer Information and Safety
The Verus™ 850 pump is designed and manufactured to provide many years of safe and reliable service when installed,
operated and maintained according to the information in this manual and the installation codes referred to in later sections.
Throughout the manual, safety warnings and cautions are identified by the “ “ symbol. Be sure to read and comply
with all of the warnings and cautions.
DANGER —Risk of electrical shock or electrocution.
This pump must be installed by a licensed or certified electrician or a qualified installer in accordance
with the current National Electrical Code (“NEC”) and/or all applicable local codes and ordinances.
The specific section of NEC covering your pump may vary depending on your location. Some
states, and/or municipalities may not have adopted the 2008 edition of the NEC. In this case
your state or local code may only be applicable and/or an earlier edition of the NEC may apply.
Please check your local and state codes and regulations before commencing any installation
of this pump. Improper installation could create, among other things, an electrical hazard which
may result in death or serious injury to users, installers, or others due to electrical shock, and/or
property damage. Always disconnect power to the pump at the circuit breaker before servicing
the pump. Failure to do so could result in death or serious injury to users, installers or others
(due to electrical shock) and/or property damage.
WARNING — Do not operate the pump until you have read and understand clearly all the operating instructions
and warning messages for all equipment that is a part of the circulating system. The following
instructions are intended as a guide for initially operating the pump in a general installation,
however each installation may have unique conditions where the starting procedure could be
different. Failure to follow all operating instructions and warning messages can result in property
damage or severe personal injury or death.
WARNING — To reduce the risk of injury, do not permit children to use this product.
IMPORTANT WARNING AND SAFETY INSTRUCTIONS
i

Verus™ 850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
IMPORTANT WARNING AND SAFETY INSTRUCTIONS
WARNING — Never exceed the maximum operating pressure or temperature limits of the system
components. Pumps installed with the Pentair Strainer Pot Assembly should not be tested
at a pressure that exceeds 20 psi. See the Owner’s Manual that accompanies that product
for more instructions. Ensure that pressures higher than those required in the pressure test
cannot inadvertently be applied to the circulation system. This may require the use of a
pressure regulator between the water supply and the circulation system.
Changes in temperature or barometric pressure can cause the internal test pressure to
increase or decrease over time once the system is isolated. A pressure relief device should
be installed that would prevent the pressure from exceeding the intended test pressure.
Exceeding these limits could result in a component failing under pressure. This instantaneous
release of energy can cause failed components to be accelerated to high velocities and to
travel distances of 100 feet or more. These components could cause severe personal injury or
death if they were to strike a person.
WARNING — Due to the potential risk that can be involved it is recommended that the pressure test be
kept to the minimum time required by the local code. Do not allow people to work around the
system when the circulation system is under pressure test. Post appropriate warning signs
and establish a barrier around the pressurized equipment. If the equipment is located in an
equipment room, lock the door and post a warning sign.
Never attempt to adjust any closures or lids or attempt to remove or tighten bolts when
the system is pressurized. These actions can result in a separation or failure of system
components. This instantaneous release of energy can cause components to be accelerated
to high velocities and to travel distances of 100 feet or more. These components could cause
severe personal injury or death if they were to strike a person.
ii

Verus™ 850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
IMPORTANT WARNING AND SAFETY INSTRUCTIONS
General Installation Information
WARNING — Pumps improperly sized or installed or used in applications other than for which the pump
was intended can result in severe personal injury or death. These risks may include but not be
limited to electric shock, fire, flooding, suction entrapment or severe injury or property damage
caused by a structural failure of the pump or other system component.
WARNING — The pump can produce high levels of suction within the suction side of the plumbing system.
These high levels of suction can pose a risk if a person comes within the close proximity of
the suction openings. A person can be seriously injured by this high level of vacuum or may
become trapped and drown. It is absolutely critical that the suction plumbing be installed in
accordance with the latest national and local codes.
• The pump is available with or without a specially designed strainer pot assembly. Pumps without the strainer
pot assembly are not self-priming and must be installed so that the pump is always flooded with water. If the
pump is to be installed without a strainer pot, plumbing suction inlets must prevent debris large than ¼ in. (0.6
cm) in diameter from being drawn into the pump.
• Pumpsinstalledwiththespeciallydesignedstrainerpotassemblyareself-primingatheightsupto10ft.(3
meters) depending on the specific installation.
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1
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Section 1
Introduction
Verus™ 850 Premium Efficient Aquaculture Duty Pump Overview
EQ Series®High Performance Commercial Pump
2
1
1
3
21
3
8 X 5/8-11 X 1" DP
FOR 6" STD FLANGE
14.0 MAX.
12.3
DIM C.
.50
5.75
16.35
5.94 REF.
10.60
Ø .500 MOUNTING HOLES
DIM B.
DIM A.
3.50
+ .00
– .06
+ .05
– .05
+ .01
– .13
FASTENERS AND O-RING ARE INCLUDED WITH
EQ SERIES 6 X 6 STRAINER TO CONNECT
STRAINER DIRECTLY TO EQ SERIES PUMP. IF
PUMP IS TO BE INSTALLED WITHOUT STRAINER,
MAKE BOTH CONNECTIONS PER NOTE 1.
USE ANSI CLASS 150 PLASTIC FLANGE
AND 1/8" THICK CLASS 150 FULL FLANGE
GASKET TO MAKE CONNECTION.
THIS DIAMETER FITS INSIDE 6" SCH 40 PIPE.
DO NOT USE SCH 80 PIPE AS FINAL PIPE
SIZE WHEN MAKING THIS FLANGE CONNECTION.
4" STD
FLANGE
FASTENERS AND O-RING ARE INCLUDED WITH EQ SERIES
6 X 6 STRAINER TO CONNECT STRAINER DIRECTLY TO
EQ SERIES PUMP. IF PUMP IS TO BE INSTALLED WITHOUT
STRAINER, MAKE BOTH CONNECTIONS PER NOTE 1.
USE ANSI CLASS 150 PLASTIC FLANGE
AND 1/8" THICK CLASS 150 FULL FLANGE GASKET
TO MAKE CONNECTION.
2
1
1
DIM C.
16.35
4" STD FLANGE
1
6" STD FLANGE
Ø .500 MOUNTING HOLES
DIM B.
DIM D.
20
3.50
+ .05
– .05
+ .01
– .13
± .05
11.62
21.5
19.00
+ .03
– .09
Pump Dimensions
• Efcient,quiet,lightweightandcorrosion-resistantwith
innovativeimpellerdesign.
• Availableinsingleandthree-phase,50and60Hzmodels
• 6”(15.24cm)suctionand4”(10.16cm)dischargewith
strainerpot
• Heat-resistantsealoperatesatupto150°F(66C°)
• Optionalbolt-onStrainerPot(P/N347013
• Self-primingpump
• SomeModelsareETLListed,(seetableonpage19)
• CEListed-Conformswithallhealth,safetyandenvironmental
protectionstandardsoftheEuropeanUnion.Appliesto50Hz
modelsonly,(seetableonpage19).
Pump Dimensions (With Optional Strainer Pot, P/N 347013)

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VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Section 2
Installation
ThispumpisforuseforaquacultureinstallationsONLY.Donotusewithanytypeofswimmingpool,
hottub,orspa.ThefollowinggeneralinformationdescribeshowtoinstalltheVerus™850Premium
EfcientAquacultureDutyPump.
Note: Before installing this product, read and follow all warning notices and instructions starting on page ii.
Installing the Pump
Only a qualified service person should install the pump.
Mechanical Installation and Pressure Testing
Mechanical Installation
1. Carefullyremovethepumpunitandstrainerpotassembly,ifincluded,fromitsshippingpackage.
2. The pump will perform best when the suction and return head losses (Total Dynamic Head [TDH]) of
theaquaculturesystemhavebeencarefullydeterminedandthecorrectpumpmodelselectedtotthese
requirements.ApumpshouldbeselectedtooperatenearthecenterofitsPerformanceCurvewithashighan
efciencyaspossible.ItisalsoimportantthattheNetPositiveSuctionHeadAvailable(NPSHA)begreater
thantheNetPositiveSuctionHeadRequired(NPSHR)atthedesignowrate.
3. Ifitisnotpossibletodetermineaccuratesuctionanddischargeheadlosses(TotalDynamicHead[TDH]),
conservativeplumbingpracticesshouldbestrictlyadheredto.Thiswouldincludeinstallingthepumpas
closeaspossibleandatapproximatelythesamelevelasthewaterlevel.(Seepageiv.,GeneralInstallation
Information,regardingwhenastrainerpotassemblyisrequired.)Uselargediameterpipeespeciallyon
thesuctionlinetokeepowvelocitiesatorbelow6feetpersecond(fps),(1.8meterspersecond[mps]).
Flowvelocitiesinthereturnplumbingshouldnotexceed10fps,(3mps).Alsokeepelbowsandteestoa
minimum.Installationswherethepumpisgoingtobeinstalledmorethat10feet,(3meters),belowor5
feet,(1.5meters),abovethewaterlevelmustbeevaluatedbyanexperiencedprofessionaltoensurethatthe
pumpwillfunctioncorrectly.
4. Asolidatfoundationshouldbeprovidedtosupportthepump.Theareashouldbewelldrainedsothatthe
pumpmotorwillnotbeoodedunderanycircumstances.Ensurethatadequatespaceandlightingaround
thepumpisprovidedforroutinemaintenanceactivities
5. Thepumpsuctionanddischargepipeswillneedtobesupportedmechanically.Supportpipingwithin3feet
ofthesuctionanddischargetopreventcrackingofpumpandpipecomponents.Severalitemslistedbelow
cancauseadditionalstressonthepumpandstrainerpotifleftunsupported.
• Shuttingthepumponandoffrepeatedly,(ContinuousCycling).
• Naturalvibrationsfromthewaterowinthepipingcancausestressonthepumpstrainerpotandvolute.
• Shuttingoffthewaterowsuddenlyonalargevolumeofmovingwater,(WaterHammer).
 Rigidconnectionsofthepumpandpipingcancausecrackingofthepumpandorpipingduetotheissues
above.Flexiblepipejointsmayalsohelpinreducingthestressonthepumpdependingonthesetup.
6. Assemblethestrainerpotassembly,ifincluded,tothepump.BesuretoinstalltheO-Ring(includedwith
thestrainerpotassembly)overtheprotrudingplasticringonthefrontofthepumphousingbeforemounting
thestrainerpot.Properlypositionthestrainerpottothehousingandsecureinplaceusingthe8largeange
boltsandwashersincludedwiththestrainerpotassembly.Theseboltsshouldnotbeovertightenedasthis
coulddamagethepump.Propertechniqueistolightlysnugeachboltwithawrench.Asquealingsound
duringtighteningoftheboltsindicatesthattheboltsarebeingexcessivelytightened.

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VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Mechanical Installation (Continued)
7. Placethepumpinitsnallocationandensure
that the mating anges of the suction and
dischargepipingareinlineandparalleltothe
angesonthepump.Resolveanyproblems
withmisalignmentbeforeboltingtheanges
tothepump.
8. Thepumpmaybesecuredtoboltsburiedin
theconcretebyusingtheholesontheoutside
ofthemotorsupports.
9. Ensure that the ange gasket is properly
positionedbetweenthesuctionangeofthe
pumpandtheangeofthesuctionpiping.
Useonlyhighqualityrubber,fulldiameter
angegasketswithholesfortheboltstopass
through.Itmaybenecessarytoholdthegasket
inplacewitheithersiliconeortwoorthree
dropsofacyanoacrylate(superglue)material.
Donotuseanyothergreaseorglueasthey
maycontainchemicalsthatcouldattackthe
plasticmaterial.Installtheangeboltshand
tightonthesuctionsideofthepump.
* INCLUDED WITH STRAINER POT
HEX NUT M20 x 25 (5/8-11)
P/N 356788 *
P/N 356789 *
P/N 356766 *
(5/8" ID X 1-5/16") MIN OD
FLAT WASHER
(6" ANSI CLASS 150) FLANGE
SUCTION CONNECTIONWITH
STRAINER POT
70 DURO NITRILE OR EPDM
3.2 mm (1/8") THICK GASKET
22.1 mm (5/8" ID X 1-5/16") MIN OD
FLAT WASHER
HEX HEAD CAP SCREW
M20 x 25, 80 mm (5/8-11 X 3-1/4") LG
Optional accessory flange kit
70 DURO NITRILE OR EPDM
3.2 mm (1/8") THICK GASKET
6" ANSI CLASS 150 FLANGE
SUCTION CONNECTIONWITHOUT
STRAINER POT
22.1 mm (5/8") ID X 44 mm (1-5/16") MIN OD
FLAT WASHER
HEX HEAD CAP SCREW
5/8-11 X 2-1/4" LG
Figure 1.
CAUTION — Some off the shelf, non-Pentair, 6” flange adapters will not work with pump without the strainer pot. Note
the tabs on the flange on the left, (Figure 3). These tabs will interfere with the strainer pot alignment
lip on the housing. This lip is used to locate the strainer pot on models that are so equipped. Please
contact Pentair for a replacement flange adapter kit (Pentair P/N 357212).
CAUTION — Use large diameter flat washers between the hex nut and the pump flanges to properly distribute the
clamping forces on the flange. Tighten the flanges to 20 ft.-lb. (27.1 newton/meters) unless otherwise
specified by the flange manufacturer. If it is not possible to use a torque wrench then care should be
taken not to over tighten the flange bolts. Failure to follow the above instructions can result in damage
to the pump flange.
10. Properlyinserttheangegasketonthedischargeportofthepump.Installtheangeboltshandtightonthe
dischargeangeconnection.
11. Inspectboththesuctionandangeconnectiontoensurealignmentremainsacceptable.Takeanycorrective
actionbeforetighteningtheangeboltstotherequiredtorque.
CAUTION — Suction and discharge piping must be supported by an appropriate system of supports or hangers.
Inadequately supported pipe can cause excessive loads to be transmitted to the pump resulting in a
structural failure of the pump that could result in flooding and property damage.
Flange kit part numbers (available separately)
• P/N 357259: FLANGE 2.5 INCH SCHEDULE-80 WITH GASKET AND S/S HARDWARE (QTY. 1)
• P/N 357260: FLANGE 5 INCH SCHEDULE-80 WITH GASKET AND S/S HARDWARE (QTY. 1)
• P/N 357261: FLANGE 3 INCH SCHEDULE-80 WITH GASKET AND S/S HARDWARE (QTY. 1)
• P/N 357262: FLANGE 4 INCH SCHEDULE-80 WITH GASKET AND S/S HARDWARE (QTY. 1)
• P/N 357263: FLANGE 6 INCH SCHEDULE-80 WITH GASKET AND S/S HARDWARE (QTY. 1)
• P/N 357212: FLANGE 6 INCH SCHEDULE-80 WITH GASKET AND S/S HARDWARE WITHOUT POT (QTY. 1)
OPTIONAL STRAINER POT ASSEMBLY (P/N 347013)
SUCTION CONNECTION WITH
STRAINER POT ASSEMBLY AND
OPTIONAL FLANGE KIT
SUCTION CONNECTION WITHOUT
OPTIONAL STRAINER POT ASSEMBLY
Figure 2.
Figure 3.
TABS

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VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
PressureTesting
Certainlocalcodesrequirethatthecirculationsystembepressuretestedwithaproofpressurebefore
beingcommissionedintoserviceorbeforeallowingconstructiontoprogresstothenextstage.
WARNING — Improperly pressure testing a circulation system can involve significant risk of property damage or
severe personal injury or death. Circulation systems store energy when pressure tested due to the
elastic nature of the materials used in construction and due to the compressibility of air that may be
contained in the system. The instructions below should be considered a guide only. Each installation
should be considered a unique situation that should be carefully investigated for risk.
WARNING — Never test this equipment with air pressure even if specied by the local code. Even low levels of air
pressure result in tremendous storage of energy that can instantaneously be released if a system
failure occurs. This instantaneous release of energy can cause failed components to be accelerated
to high velocities and to travel distances of 100 feet (30.48 meters) or more. These components could
cause severe personal injury or death if they were to strike a person.
1. Understandthelocalcode.Theintentofthecodemaybetoensurethatthepipingsystemwithitsmany
bondedjointsisleakfree.Pipingsystemstypicallyhaveahigherpressurecapabilitythantheothersystem
componentssuchasthepumporlter.Donotpressuretestthepumpunlessthecodespecicallyrequires
this.
2. Verifythateachcomponentinthesystemisdesignedtomeetthelocalcodetestpressure.Mostcomponents
shouldbemarkedwithamaximumoperatingpressure.IfacomponentisnotmarkedconsulttheOwner’s
Instructionsthatcamewiththecomponentorconsultthemanufacturer.
3. Verifythatthepressuretestwillbeconductedwithintheoperatingtemperaturelistedonthecomponents
thatmakeupthecirculationsystem.Ifnomaximumoperatingtemperatureislistedthenitmaybenecessary
toreviewtheowner’smanualorcontactthemanufacturerforthisinformation.Itiscommonpracticefor
plasticcomponentstobepressureratedat72°F(22°C).andthenderatedfortemperaturesgreaterthanthis.
4. Useonlyahighqualitypressuregaugethatiscertiedtobeaccurateforthepressureforwhichthetestis
goingtobeconducted.Donotrelyonthepressuregaugeincludedwiththeltrationsystemasitmaynot
besufcientlyaccuratetoconductapressuretestforthesystem.Pleasenotethatthepressureinthesystem
willvarydependingonwherethepressureistakenduetotheweightofthewater.
5. Ensurethatallairwillbeevacuatedfromthesystemwhenthewaterpressureisappliedtothesystem.This
willrequirethatallairbleedersonanyequipmentareopen.Italsomaybenecessarytoremovesomelidsor
coversonsystemequipmentsuchasthepumpstrainerlidtopreventairfrombeingtrappedinthesystem.
Inaddition,theremaybeotherareasofthecirculationsystemwhereairmaybetrapped.Donotconnect
waterpressuretothesystemuntilyouarecertainthatairwillbetotallyevacuated.
6. Determinetheappropriatelocationinthesystemtoapplythetestwaterpressure.Considertheplaceinthe
systemthatwillbestensurethatallairwillbedisplacedwhenwaterisintroduced.
WARNING — Never exceed the maximum operating pressure or temperature limits of the system components. Pumps
installed with the Strainer Pot Assembly should not be tested at a pressure that exceeds 20 psi. See
the Owner’s Manual that accompanies that product for more instructions. Ensure that pressures higher
than those required in the pressure test cannot inadvertently be applied to the circulation system. This
may require the use of a pressure regulator between the water supply and the circulation system.
Changes in temperature or barometric pressure can cause the internal test pressure to increase or
decrease over time once the system is isolated. If the pump is installed with a strainer pot, a pressure
relief device will need to be installed on the strainer pot drain plug to prevent the pressure from
exceeding the intended test pressure. Exceeding these limits could result in a component failing under
pressure. This instantaneous release of energy can cause failed components to be accelerated to
high velocities and to travel distances of 100 feet (30.48 meters) or more. These components could
cause severe personal injury or death if they were to strike a person.

5
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
PressureTesting (Continued)
7. Slowlyapplythewaterpressureandallowthewatertoowoutalloftheopeningsintendedforairto
escape.Closetheopeningsbeginningatthelowestlevelrstandprogressingtothehighestlevel.Donotclose
anyopeninguntilyouaresurethatairiscompletelyoutofthatpartofthesystem.
8. Allowthepressuretoslowlybuildoncealloftheairopeningsareclosed.Closethevalvebetweenthewater
supplyandcirculationsystemtoisolatethesystemfromthesupplypressure.
9. Monitorthesystempressureforafewminutestoensurethatitisstabilized.
WARNING — Due to the potential risk that can be involved it is recommended that the pressure test be kept to
the minimum time required by the local code. Do not allow people to work around the system when
the circulation system is under pressure test. Post appropriate warning signs and establish a barrier
around the pressurized equipment. If the equipment is located in an equipment room, lock the door
and post a warning sign.
Never attempt to adjust any closures or lids or attempt to remove or tighten bolts when the system
is pressurized. These actions can result in a separation or failure of system components. This
instantaneous release of energy can cause components to be accelerated to high velocities and to
travel distances of 100 feet (30.48 meters) or more. These components could cause severe personal
injury or death if they were to strike a person.
10. Itisnormalforthetestpressuretodriftdownslightlyduringtherstfewminutesasthecirculationsystem
expandsunderpressure.
11. Ifthesystempressurecontinuestofall,thenbleedofftheremainingwaterpressureinthecirculationsystem
andinspectthesystemforleaks.Lookforwaterontheoorandfeelaroundjointsformoisture.
12. Ensurethesystemisnotunderpressurebeforeattemptinganysystemadjustmentsorrepairs.
Pressure ReliefValve
Ifastrainerpotisinstalled,useapressurereliefvalve(P/N350087)inthedrainplugofthestrainerpot.
Pressure Relief Valve
Drain Plug Pressure Relief
Valve
Optional Strainer Pot Assembly, (P/N 347013)

6
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Section 3
Electrical Requirements
ThissectiondescribeshowtosecureandwiretheVerus™850AquacultureDutyPump.
Electrical Requirements and Field Wiring
CAUTION — To prevent possible voltage reduction that cause flicker sensations in lighting equipment, this product
should be powered by a dedicated power line capable of providing at least 32 A per phase. Other
equipment connected to the same power line may experience operations problems caused by the
inrush current during start-up of this product.
WARNING —RISK OF ELECTRICAL SHOCK OR ELECTROCUTION.
This pump must be installed by a licensed or certified electrician or a qualified installer in accordance
with the current National Electrical Code (“NEC”) and/or all applicable local codes and ordinances.
The specic section of NEC covering your pump may vary depending on your location. Some states,
and/or municipalities may not have adopted the current edition of the NEC. In this case your state or
local code may only be applicable and/or an earlier edition of the NEC may apply. Please check your
local and state codes and regulations before commencing any installation of this pump. Improper
installation could create, among other things, an electrical hazard which may result in death or serious
injury to users, installers, or others due to electrical shock, and/or property damage. Always disconnect
power to the pump at the circuit breaker before servicing the pump. Failure to do so could result in
death or serious injury users, installers or others (due to electrical shock) and/or property damage.
1. Ensurethattheelectricalserviceisdisconnected,properlytaggedandlockedoutbeforeworkingonthe
pump.
2. Carefullyreviewthemotorlabel.Takenoteoftheimportantnameplateinformationsuchasvolts,amps,phase,
HPandcode.Mostpumpmodelsmaybeeldconnectedsothattheycanoperateontwodifferentvoltage
circuits.Useextremecareinreviewingthemotorwiringdiagramsandalwaysverifythevoltageofthe
electricalsupplycircuit.
3. Carefullyreviewtheelectricalsupplycircuittoensurethatitisadequatetomeetthepumprequirements
identiedonthemotornameplate.Anelectricalcodeletterisidentiedonthemotornameplatethatidenties
theloadcharacteristicsofthemotor.
CAUTION — Some single-phase pumps may contain an internal thermal protector designed to temporarily stop the
pump if the motor exceeds a preset temperature. The pump will automatically restart when the motor
temperature falls to a preset limit. Always disconnect power before working on the pump to eliminate
the possibility that the pump could start unexpectedly.
Three-phase pumps do not contain an internal thermal protector and must be externally protected
by an appropriately sized protective device commonly referred to as a starter. Improper sizing of the
starter can result in the motor being destroyed or in frequent tripping of the starter.

7
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Electrical Requirements and Field Wiring (Continued)
4. Itisimportantthatallportionsoftheelectricalcircuitincludingtheconductorsthatconnecttheelectrical
paneltothepumpmotorareproperlysizedbasedonthenameplateinformationonthepump.
5. FollowingtheNationalElectricalCodeandanylocalelectricalcodesconnectthegroundingconductorand
electricalsupplyconductorstothemotor.Ensurethatthepumpisproperlygroundedpertheabovecodes
utilizingthegroundingscrewidentiedintheterminalboxofthepumpmotor.
6. Itwillbenecessarytoconrmthattherotationofthemotorisinthecorrectdirectiononallthree-phase
pumpunitsandoncertainsingle-phasepumpunits.Checkwiringdiagramtodetermineifmotorcanbe
eldwiredtorotateinbothdirections.Checkingrotationbyenergizingthepumpforonesecondandthen
watchingtherotationthroughthebackofthemotorasitcoaststoastop.Ensurethattherotationmatches
thedirectionarrowonthepump.Operatingapumpwiththeincorrectrotationcancausemanyproblems
includingpoorpriming,diminishedwaterow,excessivenoise,overloadingofthemotorandpremature
failureofthepump.
NOTICE: Due to wide variation in electrical equipment, power equipment, power supply, and installation
requirements, this manual does not make specic recommendations concerning auxiliary equipment or
fusing/wiring.
Wiresizing,wiretype,branchcircuitfuseprotection,motorstarter,controlequipment,andrelateditemsmust
meetNationalElectricalCodeandlocalcoderequirements.
Motorsaresuppliedbyseveralmanufacturersandnameplatedata(servicefactor,maximumamperage,etc.)
willvary.Consultcontrolmanufacturerandmotornameplateonyourpumptocorrectlychooseandsizemotor
starterandcontrolequipmentforyourparticularinstallation.Specicelectricalquestionsorproblemsshould
beaddressedtothemanufactureroftheelectricalcomponentinquestion.
Voltage/Phase
Voltageatmotormustbenotmorethan10%aboveorbelowmotornameplateratedvoltageormotormay
overheat,causingoverloadtrippingandreducedcomponentlife.Ifvoltageislessthan90%ormorethan110%
ofratedvoltagewhenmotorisrunningatfullload,consultpowercompany.
Do not try to connect 3-phase motors to single phase power supply or single phase motors to 3-phase
power supply.
Emergency Shutoff
InstallanEmergencyShutoffSwitchneartheaquacultureapplication.Clearlymarkthisswitchandmountitin
alocationthatisaccessibletousersoroperatingpersonnel.Makesurethatallpersonnelunderstandtheswitch’s
useincaseofemergency(entrapment,electricalmalfunction,etc.).
CAUTION — Always ll the pump with water before energizing the pump motor. Operating the pump without water
can damage the pump seal within a few seconds.

8
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Section 4
Initial Operation of Pump
WARNING — Do not operate the pump until you have read and understand clearly all the operating instructions and warning
messages for all equipment that is a part of the circulating system. The following instructions are intended as a
guide for initially operating the pump in a general pool installation, however each installation may have unique
conditions where the starting procedure could be different. Failure to follow all operating instructions and warning
messages can result in property damage or severe personal injury or death.
WARNING — The strainer pot may be at a pressure that is higher or lower than the atmospheric pressure. Always open the
drain plug on the strainer pot and allow for the pressure to equalize before removing the locking ring. Attempting
to remove the locking ring before the pressure is equalized may result in a rapid exchange of pressure. This
instantaneous release of energy can cause components to be accelerated to high velocities and to travel
distances of 100 feet (30.5 meters) or more. These components could cause severe personal injury or death if
they were to strike a person.
1. Relieveanypressurethatmaybetrappedinthecirculationsystem.
2. Openallairreliefdevicesonanyequipmentinthesystem.
3. Opentheappropriatevalvesonthesuctionanddischargeplumbing.Ifthepumpisinstalledbelowthewater
level,waterwillowintothepump.Ifthepumpisinstalledabovethewaterlevelitwillbenecessarytoll
thestrainerpotwithwateruptothesuctionpipeconnection.
4. Standclearofallequipmentandenergizethepump.
5. Thepumpwillexperienceatemporaryunstableconditionaswaterandairowthroughthepump.During
thisunstableconditionthepumpmaybenoisyandproduceerraticow.Ifthepumpisbeloworatwater
levelthistemporaryunstableconditionshouldlastonlyafewseconds.
6. Ifthepumpisinstalledabovethewaterlevelthenthepumpmustremovetheairfromthesuctionpiping.This
phaseofpumpoperationisreferredtoaspriming.Pumpsthatarelabeledself-priminghavedemonstrated
inatestlaboratorythattheycanprimewheninstalled10feet(3meters)abovethewaterlevelinatimenot
exceeding45minutes.(Exception:ModelsVREW-121PhaseandVREW-123Phasemayrequireupto1
hourand15minutestoprimeto10feet(3meters).Disconnectpowertothepumpifitdoesnotprimewithin
thetimeindicated.Apumpthatwillnotprimeusuallyindicatesasystemproblemsuchasanairleakonthe
suctionsideofthepump.)
WARNING — DO NOT open the strainer pot if pump fails to prime or if pump has been operating without water in the strainer
pot. Pumps operated in these circumstances may experience a build up of vapor pressure and may contain
scalding hot water. Opening the pump may cause serious personal injury. In order to avoid personal injury
make sure the strainer pot temperature has cooled to room temperature. Carefully remove the drain plug on
the strainer pot and allow the pressure to equalize before removing the locking ring.
NOTE: It is possible that if the pump fails to prime than the motor will shutdown due to overheating. If this happens, some models will have a
red reset button located on the side of the motor on the field wiring box. This button can be very hard to press; use of a flat, blunt tool (nothing
sharp) will make resetting the pump much easier, (see Figure 4). Be careful when resetting the motor not to puncture the rubber seal around
the switch. The button will click into place once completely pressed. If there is no red reset button on the motor, then allow the motor to cool
to room temperature before trying to prime again.
7. Itisimportantthatoncethepumphasprimedandisoperating
inastablemannerthatthevoltagebemeasuredatthepump
when rst put into service. If the electrical supply circuit
isinadequateavoltagedropmayoccurwhenthepumpis
operatingunderload.Thepumpwilloperatemostefciently
whenoperatedatthenameplatevoltage.Operatingthepump
atmorethan10%aboveorbelowthevoltagelistedonthe
nameplatecouldresultinthepumpnotoperatingproperly
andmaydamagethepumpmotor.
RESET BUTTON
Figure 4.

9
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Section 5
Maintenance
Cleaning of the Strainer Basket
1. Thepumpisdesignedtobemaintenancefreewiththeexceptionofrequiringaperiodiccleaningofthe
strainerbasket.
2. Aroutineinspectionshouldbedonebyvisuallylookingthroughstrainerlidfordebriswhilethepumpisin
operation.Thestrainerbasketshouldbecleanedwhenapproximately25%blocked.Allowingthestrainer
baskettobecomeexcessivelyblockedwilldiminishwaterow,reducepumpefciency,causecavitation
andmaydamagethebasketorotherpumpcomponents.
3. Disconnectpowertothepumpbeforecleaningthebasket.
4. Closeisolationvalvesonthesuctionanddischargelinesifnecessarytopreventooding.
WARNING — The strainer pot may be at a pressure that is higher or lower than the atmospheric pressure. Always
open the drain plug on the strainer pot and allow for the pressure to equalize before removing the
locking ring. Attempting to remove the locking ring before the pressure is equalized may result in
a rapid exchange of pressure. This instantaneous release of energy can cause components to be
accelerated to high velocities and to travel distances of or 100 feet (30.5 meters) or more. These
components could cause severe personal injury or death if they were to strike a person.
WARNING — If the pump has been energized for a period greater than 45 minutes without water owing through
the pump for any reason, the water in the strainer pot may be hot. Attempting to remove the locking
ring without removing the drain plug in the pot and allowing the pressure to equalize may result in the
hot water rapidly escaping and causing severe personal injury.
5. Openthedrainpluginthestrainerpotandallowthepressuretocompletelystabilize.
6. Removethelockingringandtheclearlidfromthestrainerpot.
7. Removethebasketanddisposeofthedebris.Useawaterhoseandsoftbrushtoremovedebrisblockingthe
openingsinthebasketifrequired.
8. Replacethebasketmakingsureitisproperlyoriented.
9. Replacethelid,byaligningthefourtabswiththetabsonthestrainerpotandmakingsuretheO-ringisclean
andisproperlylocatedinthegrooveofthelid.
NOTE
The lid must be properly aligned before the locking ring will seat completely.
Ensure that the notch in the lid is properly aligned with the tab in the strainer
pot, (see Figure 5). Also ensure that the locking ring is aligned properly before
tightening. If the locking ring is misaligned, the handles will interfere with the
pump before the locking ring is completely locked, (see Figure 6 on page 12).
10. Securethelidinplacebytighteningthelockingringhandtight
only.Donotovertightenthelockingringasthatwillmakeremoval
difcult.
Strainer Pot
Lid
Locking Ring
Align tab and notch for
proper seating of the lid
Figure 5.

10
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
WARNING — It is recommended that only water and a soft cloth be used to clean the lid and other pump components.
Cleaners may contain chemicals that could damage or weaken pump components causing them to
fail and allowing an instantaneous release of energy. This instantaneous release of energy can cause
components to be accelerated to high velocities and to travel distances of 100 feet (30.5 meters) or more.
These components could cause severe personal injury or death if they were to strike a person.
Preventative Maintenance
It may be possible to extend
the life of the pump and
to prevent a pump down
situation by implementing
a preventative maintenance
program.This may be done
by periodically performing a
listofactivitiesandrecording
certaininformation tobeable
to spot potential problems
before they become serious.
It is recommended that these
activitiesbeperformedafterthe
ltercleaningproceduresothattheinformationwillbetakenfromthesamebaselineeachtime.Allor
partofthefollowingactivitiescouldprovidethefoundationforapreventativemaintenanceprogram.
1. Recordthetimeittakesforthepumptoprimeandcometoastableoperatingcondition.Increasedpriming
timescanindicateaproblem.SeeSection7,Troubleshooting.
2. Observethesoundcomingfromthepumphousing.Asubstantialchangeinsoundfrominsidethepumpis
acluethatsomethinginthecirculationsystemhaschanged.
3. Observethesoundcomingfromthemotor.Motorbearingsrarelyfailwithoutrstbecomingnoisy.
4. Observe the temperature of the motor. The motor is designed to carry the pump load without building
up excessive heat. An increase in normal operating temperatures may indicate a potential problem.
Athermocoupleplacedatthemotorventilationdischargeopeningmaybeusedtomonitormotortemperature.
Itnormallytakesabout1hourforthemotortemperaturetostabilize.SeeSection7,Troubleshooting.
5. Record any ow and pressure readings on the circulation system meters and gages. See Section 7,
Troubleshooting.
6. Recordsupplyvoltageandamps.Supplyvoltagecanchangethroughoutthedaydependingonotherelectrical
loadsinthearea.Changesinsupplyvoltagewillaffecttheampdrawandwateroutputofthepump.
7. Inspecttheooraroundthepumptoensuretherearenoindicationsofleaks.Addressleaksimmediately.
Amechanicalsealleakisindicatedbywaterdrippingbetweenthemotorandthemotoradaptor.Amechanical
sealleakcanresultinafailedmotorbearing.
8. Inspecttheexteriorpumpcomponentsforanysignofastructuralfailure.Moststructuralfailureswillstart
withahairlinecrackthatoriginatesfromacornerwheretwodifferentshapesintersect.
9. Verifythatthesupportbracketsorhangarsforthesuctionanddischargepipingarecontinuingtofullysupport
theweightofthepiping.
10. Motorbearingsareapermanentlylubricated/sealedtypeanddoNOTneedgreaseoroilapplied,(evenin
thepresenceofzerk/greasettings).Applyinggreaseoroilcandamagethebearingsealallowingwaterto
enterthebearingcausingprematurebearingfailure.
To wards
Motor
Correct Locking Ring LOCKED Position
Towards
Motor
Correct Locking Ring START Position
Figure 6.

11
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Section 6
Servicing
WARNING —RISK OF ELECTRICAL SHOCK OR ELECTROCUTION.
This pump must be installed by a licensed or certified electrician or a qualified serviceman in accordance
with the National Electrical Code and all applicable local codes and ordinances. Improper installation
will create an electrical hazard which could result in death or serious injury to users, installers, or
others due to electrical shock, and may also cause damage to property.
Always disconnect power to the pump at the circuit breaker before servicing the pump. Ensure that
the disconnected circuit is locked out or properly tagged so that it cannot be switched on while you
are working on the pump. Failure to do so could result in death or serious injury to serviceman, users
or others due to electric shock.
Read all servicing instructions before working on the pump.
Thepumpisdesignedtoallowforquickservicingofanymovingpartswithoutdisturbingtheplumbing
connections.Thepumpcanbeservicedwiththecommontoolsthatareinnearlyeveryservicepersons
toolbox.Thefollowingsequentialinstructionsareforacompletedisassemblyinordertoreplacea
failedmotor.Thesameinstructionsmaybeusedtoperformapartialdisassemblytoreplaceanyinternal
component,butfollowingallstepswillnotberequired.
CAUTION — It is recommended that you replace the motor with the Pentair replacement motor as identified in
Section 8. This motor has been thoroughly tested to ensure that it will function appropriately with the
pump under a wide variety of operating conditions. If you choose to use another replacement motor
it is important that the frame type, the HP, the service factor, the voltage, the phase and the motor
speed match exactly to that listed on the original motor. Slight differences in these parameters can
cause the motor to not fit the pump correctly or cause the motor to fail prematurely.
Disassembly
1. Ensuretheelectricsupplycircuitisdisconnectedandisproperlytaggedandlockedout.
2. Disconnectthelinesupplyconductorsandthegroundconductorfromthemotor(1)ifthemotorisbeing
replaced.
3. Closeanyvalvesrequiredtopreventoodingwhenthepumpisdisassembled.
4. ReviewthepartsbreakdowninSection8,tounderstandhowthepumpcomponentsareassembledtogether.
5. Removethepumphousing(22)drainplug(24)andallowthepumptocompletelydrain.
6. Removethefour5/8in.hexnuts(23)thatsecurethemotorendassemblytothefronthousing(22).
7. Ifthemotorsupport(2)isboltedtoapermanentsurfaceitwillbenecessarytoremovethescrews(6)that
aresecuringthemotortothemotorsupport(2)toallowforremovalofthemotorendassembly.
8. Graspthemotorendassemblyandpullbackwards.Itmaybenecessarytowigglethemotorassemblyfrom
sidetosidetobreakfreetheO-Ringsealsinsidethepump.
9. Pullthemotorendassemblyfreeofthehousing(22)sothatthereisadequateaccesstotheinternalcomponents.
Ifdesired,thesupplyconductorscanbedisconnectedandthemotorendassemblycanbetakentoaworkbench
foreasierservice.
10. Removethefourscrews(20)withwashers(18)(19)thatsecurethediffuser(17)tothesealplate(13).
11. Holdtheimpeller(15)noseandremovethescrew(16)andwashers(4)(5)thatsecuretheimpeller(15).
12. Theimpeller(15)isalsosecuredtotheshaftbyaparallelkey.Theimpeller(15)canbefreedfromthe
shaftandkeybygraspingtheoutsideoftheimpeller(15)andpullingtheimpeller(15)awayfromthemotor
(1).Itisgoodpracticetoinspecttheimpeller(15)toensurethatthevanepassagewaysareopenandthatno
vaneshavebeensubstantiallybrokenorworn.
13. Removingtheimpeller(15)willexposethetwopiecesofthemechanicalseal(14).Itwillnotbenecessary
tofurtherdisassemblethepumpifonlyasealreplacementisrequired.
1

12
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
Assembly (Continued)
14. Thesealplate(13)isattachedtothemotoradaptor
(7)bytwodowelpins(26).Thesealplate(13)can
befreedfromthesedowelpins(26)bygraspingthe
outsideofthesealplate(13)andpullingwayfrom
themotorwigglingitfromsidetosideifrequired.
15. Removethefourscrews(10)withwashers(8)(9)
thatsecurethemotoradaptor(7)tothemotor(1).
Thesecomponentscouldcauseseverepersonalinjury
ordeathiftheyweretostrikeaperson.
Assembly – Refer to the Replacement Parts
(Section 8) for Figures
1. Ensurethatthetwo6½in.longscrews(11)with
washers(12)areproperlyinsertedintothebottom
ofthemotoradaptor(7)beforeattachingthemotor
adaptor(7)tothenewmotor(1).
2. Properlyorientthemotoradaptor(7)tothemotor(1)
andsecureinplaceusingthefourscrews(10)and
washers(8)(9).ItisrecommendedtousethePump
SealPlateAlignment tool (PentairP/N351137S)
when mounting the motor adaptor to ensure that
themotoradaptorisperfectlyalignedtothemotor
shaft,(seeFigures7&8).
3. Insertthetwodowelpins(26)intothemotoradaptor
(7).
4. Install the stationary ring of the mechanical seal
(14)intothesealplatebore.Ensurethatitisfully
insertedintotheborewiththewhitesurfacefacing
you.
CAUTION — The mechanical seal is a highly engineered component that must be carefully handled. The contact
faces are manufactured to extremely precise tolerances. These faces must be free of all surface dust
and debris. Always wash your hands before handling the mechanical seal. Avoid touching the contact
faces except for when pressing the seal ring into the bore. Lubricate the rubber portion with a slight
amount of soapy water if required to insert it into the bore. Do not use silicone or other lubricants as
this can contaminate the seal face. Rinse the seal face if required after assembly to free it of any dirt
or debris.
5. Properlyorientthesealplate(13),slipitontothetwodowelpins(26)andsecuretothemotoradaptor(7)
bytappingittowardthemotoradaptor(7)untilthereisnoclearancebetweenthetwoparts.
6. Slipthespringportionofthemechanicalseal(14)overthemotorshaft,beingcertainthatthehardblack
contactsurfaceisfacingthewhitesurfaceofthestationarysealring.Useasmallamountofsoapywaterif
requiredtolubricatetherubberofthemechanicalseal(14)sothatitslipseasilyovertheshaft.
7. Installtheshaftkeyintotheshaftofthemotorandtheninstalltheimpeller(15)overtheshaft.Itwillbe
necessarytoalignthekeywayintheimpeller(15)withthekey.Pushtheimpeller(15)asfaraspossible
ontothemotorshaft(1).
8. Installthesocketheadscrew(16)withwashers(4)(5)tosecuretheimpeller(15).Itisimportantthatthe
screw(16)betightenedsecurelyandthattheimpeller(15)isfullyseated.
Seal Plate
Alignment Tool
(P/N 351137S)
Alignment Notch
Dowel Pin Holes
Alignment Notch
Figure 7.
Figure 8.
1
1

13
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
9. Applyalightlmofsiliconegreasetotheinsidediameterofthebrassbushinginsidethediffuser(17).This
lmwillassistinproperlycenteringthediffuserbushingtotheimpeller(15)andwillreducethefriction
shouldthepartscontactduringmotorstart-up.DONOTUSEANYOTHERTYPESOFLUBRICANTS.
10. Installthediffuser(17)overtheimpeller(15)andsecurewiththefourscrews(20),butonlyhandtight.The
diffuser(17)hasclearancearoundthefourscrews(20)thatwillallowadjustmentofthetofthediffuser
(17)aroundtheimpeller(15)nose.Rotatetheimpeller(15)byhandtoensurethatitisfreetoturnandslowly
tighteneachofthefourscrews(20).Verifythattheimpeller(15)isfreetoturnoncethediffuserscrews(20)
arefullytightened.
11. LubricatethediffuserO-Ring(21)andthelargersealplateO-Ring(28)withsiliconelubricantoroilsoap.
ThiswillallowtheO-Ringstoslipintoplacewithoutgettingpinched.EnsurethatthebigsealplateO-Ring
(28)isproperlyseatedonthelargediameterofthesealplate(13).
12. Carefullyslipthemotorendassemblyintothehousing(22)pushingitforwardasfaraspossibleuntilthe
largesealplateO-Ring(28)comesintocontactwiththehousing(22).Insertthefour6½in.longscrews(11)
throughthehousing(22)andsecuretheassemblyinplaceusingthewashers(12)andnuts(23).Gradually
tighteneachofthefourscrewsafewturnsinacrossingpatterntoensurethatthemotorassemblyisproperly
centeredtothehousing.Donotovertightenthesescrews.
CAUTION — Failure to follow the above assembly procedures could cause the impeller to bind once the pump is
fully assembled. It is possible to remove the strainer basket, reach through the strainer pot and spin
the impeller to verify that it will rotate freely. A bound impeller may cause the motor to not start or
cause the motor to draw excessive amps.
13. Securethemotor(1)tothemotorsupports(2).
14. Reconnectthegroundandsupplyconductors.
15. ReadandfollowtheinstructionsunderSection4,InitialOperationofPumpbeforeputtingthepumpback
intoservice.

14
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
PumpWill Not Prime No water in Strainer Pot
Lid is not tight
Damaged lid O-Ring
Closed Valve in Piping System
Air leak in Suction Line
Pump installed more than 10 ft. (3 m) above Water Level or otherwise
too high for Hydraulic Conditions of Pool Plumbing System
Pump Shaft rotating in wrong direction
Low Flow- High Filter Pressure Filter is dirty
Restriction in Filter Line
Low Flow- Low Filter Pressure Strainer or Basket clogged
Clogged Impeller
Air leak in Suction Line
Restriction in Suction Line
Cavitation - NPSHA less than NPSHR
Pump Shaft rotating in wrong direction
Motor Does NotTurn Power Switch is off
Circuit Breaker has tripped
Thermal Protector has tripped
Pump is in OFF mode of Timer
Motor Shaft is locked by bad Bearing
Impeller is jammed
Motor Over Heating Electrical Supply Connections are incorrect
Wiring to Pump is undersized
Inadequate Voltage supplied to Site
Ventilation is inadequate for Motor
Voltage differential between legs of 3 Phase Circuit >5%
Pump Shaft rotating in wrong direction
High Pitch or Growling Noise Air Leak in Suction Line
coming from WET END of Pump Cavitation - NPSHA less than NPSHR
A Valve, Elbow or Tee is located too close to the Suction Inlet of the Pump
Pump Shaft rotating in wrong direction
Section 7
Troubleshooting
Usethefollowingtroubleshootinginformationtoresolvepossibleproblemswiththepump.
WARNING — RISK OF ELECTRICAL SHOCK OR ELECTROCUTION.
Improper installation will create an electrical hazard which could result in death or serious injury to
users, installers, or others due to electrical shock, and may also cause damage to property.
1. If you are not familiar with your filtering system and/or heater/chiller:
a. Do NOT attempt to adjust or service without consulting a qualified technician.
b. Read the entire Installation & User’s Guide before attempting to use, service or adjust ltration
system or heater.
Note: Before attempting to service or repair.Turn off power to pump at the power source.
Problems and Corrective Actions
Problem Corrective Action

15
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
VERUS®850 Premium Efficient Aquaculture Duty Pump Installation and User’s Guide
27
28
22
29
25
24
23
12
21
17
20
19
18
16
5
4
15
14
13
10
9
8
7
12
11
4
5
26
1
6
5
4
3
2
Motor Shaft Keys comes w/Motor (Item#1)
Purchase optional flange kit:
357262 - Flange 4” w/ Gasket & s/s Hardware
357263 - Flange 6” w/ Gasket & s/s Hardware
357212 - Flange 6” w/ Gasket & s/s Hardware
for use on EQ Series
®
Less Strainer
30
Box A
(Optional)
See Box A
(Optional)
See Box A
Section 8
Replacement Parts
Verus™ 850 Duty Pump Illustrated Parts
Continued on next page
Part No.
W/O Pot
Part No.
W/Pot Model Number HP Phase
Motor No.
(Key No. 1)
Addional
Motor Support
(Key No. 3)
Impeller
(Key No. 15)
Diffuser
(Key No. 17)
347019 347030 VRE-20 5 1 357065S 356712 350030 350032SS
347020 347031 VREK-20 5 3 357068S 356712 350030 350032SS
347021 347032 VRE-30 7.5 1 357066S N/A 350029 350033SS
347022 347033 VREK-30 7.5 3 357069S 356712 350029 350033SS
347237 347238 VRE-40 10 1 357063S N/A 350028 350033SS
347023 347034 VREK-40 10 3 357070S N/A 350028 350033SS
347024 347035 VREK-60 15 3 357071S N/A 350027 356735SS
347083 347049 VREK5-40 10 3 350153S N/A 350027 356735SS
347084 347080 VREK5-30 7.5 3 350154S N/A 350028 350033SS
347085 347081 VREK5-20 5 3 350155S 356712 350029 350033SS
347086 347082 VREK5-12 3 3 350156S 356712 350030 350032SS
347018 347029 VREWK-20 5 3 350158S 356712 350070 357273SS
347017 347028 VREW-20 5 1 350159S 356712 350070 357273SS
347148 347155 VRECK-20 5 3 355038S 356712 350030 350032SS
347149 347156 VRECK-30 7.5 3 355039S 356712 350029 350033SS
347150 347157 VRECK-40 10 3 355042S N/A 350028 350033SS
347151 347159 VRECK-60 15 3 355044S N/A 350027 356735SS
347014 347026 VREW-12 3 1 357064S 356712 350027 356735SS
347016 347027 VREWK-12 3 3 357067S 356712 350027 356735SS