Zoeller 915 User manual

1
© Copyright 2020 Zoeller Co. All rights reserved.
INSTALLATION INSTRUCTIONS
912/915 24 x 24 Preassembled Sewage Systems
PREINSTALLATION CHECKLIST - ALL INSTALLATIONS
FM3291
1220
Supersedes
New
Notice to installer: instructions must remain with installation.
1. Inspect all materials. Occasionally, products are damaged during shipment. If the unit is damaged, contact your dealer before using. DO NOT remove the test
plugs from the pump.
2. Carefullyreadtheliteratureprovidedtofamiliarizeyourselfwithspecicdetailsregardinginstallationanduse.Thesematerialsshouldberetainedfor future
reference.
SEE BELOW FOR
LIST OF WARNINGS
CAUTION
SEE BELOW FOR
LIST OF CAUTIONS
REFER TO WARRANTY ON PAGE 2.
Product information presented
here reects conditions at time
of publication. Consult factory
regarding discrepancies or
inconsistencies.
MAIL TO: P.O. BOX 16347 • Louisville, KY 40256-0347
SHIP TO: 3649 Cane Run Road • Louisville, KY 40211-1961
TEL: [phone] • 1 (800) 928-PUMP • FAX: [phone]
Visit our website:
zoellerpumps.com
1. To reduce the risk of electrical shock, a properly grounded receptacle or
control box must be installed in accordance with the governing codes. Never
remove ground pin from plug.
2. Make certain that the ground fault interrupter protected receptacle or control
box is within the reach of the pump’s power supply cord. DO NOT USE AN
EXTENSION CORD. Extension cords that are too long or too light do not deliver
sufcientvoltagetothepumpmotor,andtheycouldpresentasafetyhazardif
the insulation were to become damaged or the connection end were to fall into
a damp or wet area.
3. Make sure the pump's electrical supply circuit is equipped with fuses or circuit
breakers of proper capacity. A separate branch circuit is recommended, sized
accordingto the local electrical codes for the current shown on the pump name
plate.
4. Testing for ground. As a safety measure, each electrical outlet should be
checked for ground using a circuit analyzer which will indicate if the power,
neutral and ground wires are correctly connected to your outlet. If they are
not,callaqualied,licensedelectrician.
5. FOR YOUR PROTECTION, ALWAYS DISCONNECT PUMP FROM ITS POWER
SOURCE BEFORE HANDLING. If pump is wired direct, de-energize the circuit
at the control box. Wear insulated protective shoes and do not stand in water.
Pumps equipped with a 3-prong ground plug are designed to help protect
against electrical shock. DO NOT, UNDER ANY CIRCUMSTANCES, REMOVE
THE GROUND PIN.
6. Installation and servicing of the pump's electrical circuits and hardware should
onlybeperformedbyaqualied,licensedelectrician.
7. Risk of electrical shock. Do not remove power supply cord and strain relief or
connect conduit directly to the pump.
8. Pump contains oil which becomes pressurized and hot when operating. Allow
2-1/2 hours after disconnecting before attempting service.
9. Pump is not intended for potable water due to possible contamination by oil
contained in the pump.
10. Risk of electric shock. These pumps have not been investigated for use in
swimming pools and marine areas.
11. Prop65 Warning for California residents:
: Cancer and Reproductive Harm-
www.P65Warning.ca.gov.
1. This unit is not designed to handle any material other than human waste and
toilet paper. The list of items that should not be used with this system includes,
but is not limited to, feminine sanitary products, condoms, cotton balls and
swabs, baby wipes, paper towels, etc.
2. Check to be sure your power source is capable of handling the voltage
requirements of the motor, as indicated on the pump name plate.
 3. Theinstallation ofvariableleveloatswitchesistheresponsibilityofthe
installingparty,andcareshouldbetakenthatthetetheredoatswitchwill
not hang up on the pump apparatus or pit peculiarities and is secured so that
thepumpwillshutoff.Itisrecommendedtouserigidpipeandttingsand
the pit be 18" or larger in diameter.
 4. Venthole.Itisnecessarythatallsubmersiblesump,efuent,andsewage
pumps capable of handling various sizes of solid waste be of the bottom intake
design to reduce clogging and seal failures. If a check valve is incorporated in
the installation, a 3/16" vent hole must be drilled in the discharge pipe below the
check valve and pit cover to purge the unit of trapped air. Vent hole should be
checked periodically for clogging. The vent hole on a High Head application
may cause too much turbulence. If you choose not to drill a vent hole, be sure
the pump case and impeller is covered with liquid before connecting the pipe
to the check valve. NOTE: THE HOLE MUST BE BELOW THE BASIN COVER
AND CLEANED PERIODICALLY. Water stream will be visible when pump is
operating.
5. Pump should be checked frequently for debris and/or buildup which may
interferewiththeoat“on”or“off”position.Repairandserviceshouldbe
performedbyZoellerPump Company Authorized Service and WarrantyCenter.
6. Maximumoperatingtemperature for standard modelpumps must not exceed
130 °F.
7. Do not operate a pump in an application where the Total Dynamic Head is
less than the minimum Total Dynamic Head listed on the Pump Performance
Curves.
8. For health reasons, do not unplug, turn off, or disable pump and use pump tank
systemasawaytollupasinkorlaundrytray,etc.
9. Pumps must be installed in accordance with the National Electrical Code
and all applicable local codes and ordinances. Pumps are not to be installed
inlocationsclassiedashazardousinaccordancewithNationalElectricCode,
ANSI, NFPA 70.
NOTE: Pumps with the "UL" mark and pumps with the "US" mark are tested to UL
standardUL778.CSAcertiedpumpsarecertiedtoCSAstandardC22.2No.108.
DATE INSTALLED:
MODEL NUMBER:
Register your
Zoeller Pump Company
Product on our website:
http://reg.zoellerpumps.com/
P/N 157026

2
© Copyright 2020 Zoeller Co. All rights reserved.
CONDITION COMMON CAUSES
A. Pump will not start or run.
Checkfuse, lowvoltage, overloadopen, openor incorrectwiring, open switch, impeller orseal boundmechanically,
motor or wiring shorted. Float assembly held down. Switch, damaged or out of adjustment.
B. Motor overheats and trips
overload or blows fuse.
Incorrect voltage, negative head (discharge open lower than normal) impeller or seal bound mechanically, motor
shorted.
C. Pump starts and stops too
often.
Float switch tether length too short, check valve stuck open, or none installed in long distance line, overload open,
bidding, sump pit too small.
D. Pump will not shut off. Debrisunderoatassembly,oatboundbybasinsidesorother,switch,damagedoroutofadjustment.
E. Pump operates but delivers
little or no water.
Check inlet, strainer housing, discharge pipe, and vent holes for obstructions. Discharge head exceeds pump
capacity. Low or incorrect voltage. Incoming water containing air or causing air to enter pumping chamber.
Incorrect motor rotation. (3 phase pumps only)
F. Drop in head and/or capacity
after a period of use.
Increased pipe friction, clogged line or check valve. Abrasive material and adverse chemicals could possibly
deteriorate impeller and pump housing. Check line. Remove base and inspect.
G. Tankorttingsleak.
Carefully tighten pipe joints (use pipe dope) and screws. Check gasket location, tighten lid evenly. Do not over
tightenttingsorscrews.
If the above checklist does not uncover the problem, consult the factory. do you attempt to service or otherwise disassemble pump.
ServicemustbeperformedbyZoellerauthorizedServiceandwarrantycenters.Gotowww.zoellerpump.comtondtheauthorized
service center in your area.
SERVICE CHECKLIST
Manufacturer warrants, to the purchaser and subsequent owner during the
warranty period, every new product to be free from defects in material and
workmanshipunder normaluseandservice,when properlyusedandmaintained,
for THE PERIOD MENTIONED IN THE CHART BELOW FOR THE SPECIFIC MODEL
PURCHASED, from the date of purchase. Proof of purchase is required. Parts
that fail within the warranty period, that inspections determine to be defective
in material or workmanship, will be repaired, replaced or remanufactured at
Manufacturer's option, provided however, that by so doing we will not be
obligated to replace an entire assembly, the entire mechanism or the complete
unit. No allowance will be made for shipping charges, damages, labor or other
charges that may occur due to product failure, repair or replacement.
This warranty does not apply to and there shall be no warranty for any material
or product that has been disassembled without prior approval of Manufacturer,
subjected to misuse, misapplication, neglect, alteration, accident or act of
nature; that has not been installed, operated or maintained in accordance
with Manufacturer's installation instructions; that has been exposed to outside
substances including but not limited to the following: sand, gravel, cement,
mud, tar, hydrocarbons, hydrocarbon derivatives (oil, gasoline, solvents,
etc.), or other abrasive or corrosive substances, wash towels or feminine
sanitary products, etc. in all pumping applications. The warranty set out in the
paragraph above is in lieu of all other warranties expressed or implied; and we
do not authorize any representative or other person to assume for us any other
liability in connection with our products. Contact Manufacturer at, 3649 Cane
Run Road, Louisville, Kentucky 40211, Attention: Customer Service Department
to obtain any needed repair or replacement of part(s) or additional information
pertaining to our warranty.
MANUFACTURER EXPRESSLY DISCLAIMS LIABILITY FOR SPECIAL,
CONSEQUENTIAL OR INCIDENTAL DAMAGES OR BREACH OF EXPRESSED
OR IMPLIED WARRANTY; AND ANY IMPLIED WARRANTY OF FITNESS FOR A
PARTICULAR PURPOSE AND OF MERCHANTABILITY SHALL BE LIMITED TO
THE DURATION OF THE EXPRESSED WARRANTY.
Some states do not allow limitations on the duration of an implied warranty,
so the above limitation may not apply to you. Some states do not allow the
exclusion or limitation of incidental or consequential damages, so the above
limitationorexclusionmaynotapplytoyou.Thiswarrantygivesyouspecic
legal rights and you may also have other rights which vary from state to state.
LIMITED WARRANTY
DO’S & DON'T’S FOR INSTALLING UNIT
1. DO read all installation material with the unit.
2. DO inspect unit for any visible damage caused by shipping. Contact dealer
if unit appears to be damaged.
3. DO remove all debris from the basin. Be sure that the pump will have a hard,
level surface beneath it. DO NOT install on sand, gravel or dirt.
4. DO be sure that the area is large enough to allow proper clearance for the
level control switch(es) to operate properly.
5. DO Always Disconnect Pump From Power Source Before Handling.
DO always connect to a separately protected and properly grounded circuit.
DO NOT ever cut, splice, or damage power cord (Only splice in a watertight
junction box).
DO NOT carry or lift pump by its power cord.
DO NOT use an extension cord.
6. DO install a check valve and a union in the discharge line.
DO NOT use a discharge pipe smaller than the pump discharge.
7. DO NOT utilize this unit for pumping gasoline or other hazardous liquids.
8. DO test pump immediately after installation to be sure the system is working
properly.
9. DO review all applicable governing codes and verify that the installation
conforms to each of them.
10. DOconsultmanufacturerforclaricationsorquestions.
11. DO consider a two-pump system with an alarm where an installation may become
overloaded or primary pump failure would result in property damages.
12. DO consider a D.C. Backup System where a sump or dewatering pump is
necessaryforthepreventionofpropertydamagesfromoodingduetoA.C.
power disruptions, mechanical or electrical problems or system overloading.
13. DO inspect and test system for proper operations at least every 3 months.
In instances where property damages are incurred as a result of an alleged product failure, the property
owner must retain possession of the product for investigation purpose.
Package Model 912 912 912 915 915 915
Pump Model 211/212 264 266 803 805 807
Warranty 2 year 3 year 3 year 3 year 3 year 3 year

3
© Copyright 2020 Zoeller Co. All rights reserved.
RECOMMENDED INSTALLATION FOR ALL APPLICATIONS
All installations must comply with all applicable electrical and plumbing codes.
1. Electrical wiring and protection must be in accordance with governing
electrical codes.
2. All installations require a basin cover to prevent debris from falling into
the basin and to prevent injury.
3. Install proper Zoeller unicheck (combination union and check valve),
preferably just above the basin to allow easy removal of the pump
for cleaning or repair. If high head or below cover installation is
required, use 30-0164 on 1-1/2" pipe, 30-0152 on 2" pipe and 30-0160 on
3" pipe.
4. When a Unicheck is installed, drill a 3/16" diameter hole in the discharge
pipe even with the top of the pump. NOTE: THE HOLE MUST ALSO BE
BELOW THE BASIN COVER AND CLEANED PERIODICALLY. (High Head
unitsee#4under“Caution”onfrontpage).Waterstreamwillbevisible
from this hole when pump is operating.
 5. Securelytapeorclamppowercordtodischargepipe,clearoftheoat
mechanism(s).
6. Use a discharge pipe equivalent in diameter to the pump's discharge.
7. Basin must be in accordance with governing codes and specications.
 8. Pump must be level and oat mechanism(s) clear of sides of basin
before starting pump.
9. Basin must be clean and free of debris after installation.
10. Gate valve, shut-off valve, or ball valve to be supplied by installer and
installed according to any and all codes.
 11. Locateoatswitchesasshowninsketches.Thebestplaceforthe“off”
point is above the motor housing and positioned 180 °F from the inlet.
Neverput“off”pointbelowdischargeonpump
12. Gas-tight seals are required to contain gases and odors.
13. Vent gases and odors to the atmosphere through vent pipe.
14. Optional pump stand (P/N 10-2421) eliminates the need for blocks or
 bricksunderthepump.Forusewithefuentanddewateringpumpsonly.
15. Optional watertight control box available, see FM1597 for details.
16. For proper spacing of "On" - "Off" switches refer to local or
national standards and guildlines.
 17. Optionalseptictankrisersforeasyaccesstopump,controlsandlters.
SK3310
INLET
DISCHARGE
INSPECTION PORT
SAFETY SCREW
VENT FOR DUPLEX
SYSTEMS
VENT/DISCHARGE
ID TAG
OPTIONAL 4" INLET

© Copyright 2020 Zoeller Co. All rights reserved.
25-1/2
9-1/4
4-1/2
22 5/8
28-3/4
SK3308
CRUSHED ROCKPEA GRAVEL
BACKFILL MATERIAL REQUIREMENTS
MINIMUM 4" COMPACTED SUB-BASE
NO HUB STYLE
CONNECTOR 4" INLET PIPE
(INSTALLED BY CONTRACTOR)
MINIMUM 4" BACKFILL MATERIAL
SEE REQUIREMENTS BELOW
ROTOMOLDED BASIN AS PER
ENGINEER'S SPECIFICATION
FINISHED FLOOR
VENT PIPE
(OFFSET FOR ILLUSTRATION PURPOSES)
DISCHARGE PIPE
PUMP POWER CORD
1/4"
3/4"
1/2"
1"
SK3311

Introduction
The preassembled 24 x 24 sewage system is complete and job ready from the
factory for easy installation. Its compact design makes it perfect for low burial
depth applications. The system features a removable access port that allows
fortheimmediateobservationofpumpsandoats.Additionalfeaturesinclude
a41-galloncapacity,abuiltinanti-otationdevice,andaconstructioncoverto
keep everything clean during installation.
INSTALLATION
Preparation
Inspect your basin assembly. If the unit has been damaged in shipment or if
parts are missing, contact your distributor before installing. Carefully read all
literature to familiarize yourself with details regarding installation and use. Retain
materials for future reference. All installations must comply with all applicable
electrical and plumbing codes, including but not limited to the National Electrical
Code, local, regional and/or state plumbing codes, etc.
The clear construction cover can be reattached after reading the appropriate
materials. It will ensure the cover, cordage, etc. remains clean during installation.
Excavation
Excavateaholeforthebasininaverylowtrafcareainproximitytoaproper
electricaloutlet.Theholeshouldbeatleast8”largerindiameterthanthebasin
inordertoleave4”ofbackllallthewayaroundtheperimeter.Aminimumof4”
ofcompactedsubbaseisalsorequired.Backllandsubbaseshouldbe1/8”to
3/4”peagravelor1/8”to1/2”crushedstone.
Basin Placement
Ensure compacted subbase is free of any sharp rocks that could come into
direct contact with the basin. Place basin into pit and verify that it is level. It
isrecommendedthatthetopofthebasinislevelwiththesurroundingnished
oor.Oncethedesiredpositioninghasbeenachieved,partiallybackllbasinto
help hold in place. Ensure enough room is left below the inlet to make the inlet
connection.Connectthe4”inletpipeusingano-hubstyleconnectorandnish
backllingaroundthebasinwiththespeciedmedia.Careshouldbetakennotto
damagecomponentsorleavevoidswhenbacklling.Finishgradeofoorshould
bepouredinplacearoundthetop6”ofthebasinassembly.
Electrical Connections
FOR YOUR PROTECTION, ALWAYS DISCONNECT PUMP
FROM ITS POWER SOURCE BEFORE HANDLING. Single phase pumps are
supplied with a 3-prong grounded plug to help protect you against the
possibility of electrical shock. DO NOT, UNDER ANY CIRCUMSTANCES,
REMOVE THE GROUND PIN. The 3-prong plug must be inserted into a
mating 3-prong grounded receptacle. If the installation does not have
such a receptacle, it must be changed to the proper type, wired and
grounded in accordance with the National Electrical Code and all
applicable local codes and ordinances.
Risk of electrical shock.Do not remove power supply
cord and strain relief or connect conduit directly to the pump.
Installation and checking of electrical circuits and
hardwareshouldbeperformedbyaqualiedlicensedelectrician.
Discharge/Vent
The2”threadeddischargeandventportsarelocatedandlabeledontopofthe
cover. Installations containing sewage pumps: 211, 212, 264, or 266 models must
notuseadischargesmallerthan2”.Installationscontaininggrinderpumps:803,
805,or807mustnotuseadischargesmallerthan1.25”.Allventingneedstobe
installed in accordance with any/all local and national plumbing codes.
Simplex:
Usinganadapter,connectdischargepipetothe“Discharge”2”threadedportand
connectventpipetothe“Discharge/Vent”2”threadedport.
Duplex:
Usinganadapter,connectdischargepipestoboth2” threaded ports on top of
thecover.Forthevent,usea3”holesawtodrillaholelocatedatthepilothole
indentiononthecover.Installtheincludedpipesealanduse2”pipeforthevent.
Inspection Port
912/915 24x24 systems are equipped with an inspection port in the lid to allow for
the convenient observation and replacement of pump/alarm oats as needed.
For access, remove the safety screw located on top, turn the inspection cap
counterclockwise and lift.
Float heights are preset from the factory for optimum performance. During startup,
ensurealloatshaveadequateclearanceandareoperatingappropriately.
Float tree removal:
Theoattreemaybeeasilyremovedfortheinspectionandreplacementofoats.
Itisheldinplacewithcompressionbetweenthelidandbasin.Toremovetheoat
tree, simply push down on the handle on top to free it from the bottom of the lid.
Liftthe tree andoats upward throughthe inspection port. Lift the appropriate
cord seals from the top of the cover to relieve any attached cords. To reattach,
ensurecordsealshavebeenfullyinsertedandlowertheoattreebackthrough
theinspectionport.Reinsertthebottomoftheoattreeintothepremoldedring
and push down on the top handle to reattach on the premolded bottom section of
thelid.Ensureoatsareorientedwithadequateclearanceforoperation.
© Copyright 2020 Zoeller Co. All rights reserved.

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© Copyright 2020 Zoeller Co. All rights reserved.
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© Copyright 2020 Zoeller Co. All rights reserved.
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© Copyright 2020 Zoeller Co. All rights reserved.
MAIL TO: P.O. BOX 16347 • Louisville, KY 40256-0347
SHIP TO: 3649 Cane Run Road • Louisville, KY 40211-1961
[phone] • 1 (800) 928-PUMP • FAX [phone] Visit our website:
zoellerpumps.com