Zoeller 810 User manual

1
© Copyright 2020 Zoeller®Co. All rights reserved.
Model Number: ______________ Date Code: _______________
Simplex  Duplex
Packaged System Field Assembled System
Job Name: ____________________________________________
Distributor: ____________________________________________
Date of Purchase: _________ Zoeller S/O No.: ______________
Contractor: ____________________________________________
Date of Installation: ____________________________________
System Readings During Start-up: Voltage _____ Amps ______
OWNER’S MANUAL
MODELS 810 & 815 PROGRESSING CAVITY GRINDER PUMPS
This manual incorporates the installation, operation,
maintenance, and service instructions into one document to aid in
the ownership of a Zoeller submersible wastewater product. Please
read and review this manual before installing the product. Follow the
stepsinthismanualforaproperstart-up.Manyitemscontainedwithin,
when followed correctly, will not only ensure a long and problem-free
life for the pump, but also save time and money during installation.
Reference FM2435 and FM2436 for replacement parts on 810 and 815
Series Progressing Cavity Grinder Pumps respectively. Should further
assistancebenecessarypleasecall ourTechnicalService Department
at 1-800-928-PUMP (7867).
Owner’s Information
Congratulations on the purchase of a Zoeller submersible
progressing cavity grinder pump. Since 1939 the name Zoeller has
represented the standard for submersible dewatering and sewage
pumps. The same high quality workmanship and easy maintenance
design has been incorporated into this line of heavy-duty submersible
progressing cavity grinder pumps. This Zoeller pump will provide years
of trouble-free service when installed according to the manufacturer’s
recommendations.
Table of Contents
Safety Instructions.......................................................................... 1
Limited Warranty, Checklist and Application ............................. 2-3
General Information......................................................................... 3
Pump Wiring Instructions ............................................................... 4
Typical Outdoor Prepackaged System............................................ 5
Installation and Operation Instructions ......................................... 6
Maintenance..................................................................................... 7
Service Checklist ............................................................................. 8
FM2458
0520
Supersedes
0117
NOTICE TO INSTALLER: Instructions must remain with installation.
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
Safety Instructions
REFER TO WARRANTY ON PAGE 2.
TO AVOID SERIOUS OR FATAL PERSONAL INJURY OR MAJOR PROPERTY
DAMAGE, READ AND FOLLOW ALL SAFETY INSTRUCTIONS IN THIS MANUAL
AND ON THE PUMP.
THIS MANUAL IS INTENDED TO ASSIST IN THE INSTALLATION AND OPERATION
OF THIS UNIT AND MUST BE KEPT WITH THE PUMP.
This is a SAFETY ALERT SYMBOL. When you see this symbol
on the pump or in the manual, look for one of the following
signal words and be alert to the potential for personal injury
or property damage.
Warns of hazards that WILL cause serious personal injury,
death or major property damage.
Warns of hazards that CAN cause serious personal injury,
death or major property damage.
Warns of hazards that CAN cause personal injury or
property damage.
Warns of electrical shock hazards that
cancause seriouspersonal injury,death
or major property damage.
Identies any terminal which is intended for connection
to and external conductor for protection against electrical
shock in case of a fault, or the terminal of a protective earth
(ground) electrode.
Read operator's manual.
INDICATES SPECIAL INSTRUCTIONS WHICH ARE VERY
IMPORTANT AND MUST BE FOLLOWED.
THOROUGHLY REVIEW ALL INSTRUCTIONS AND WARNINGS PRIOR TO
PERFORMING ANY WORK ON THIS PUMP.
MAINTAIN ALL SAFETY DECALS.
CAUTION
Register your
Zoeller Pump Company
Product on our website:
http://reg.zoellerpumps.com/

2
© Copyright 2020 Zoeller®Co. All rights reserved.
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 Support 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
Manufacturer warrants, to the purchaser and subsequent owner during the
warranty period, every new product to be free from defects in material and
workmanship under normal use and service, when properly used and maintained,
for a period of two years from date of purchase. Proof of purchase is required.
Partsthatfail within thewarrantyperiod thatinspectionsdetermine to bedefective
in material or workmanship will be repaired, replaced or remanufactured at
Manufacturer'soption,providedhowever, that bysodoing wewillnotbe 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,
subjectedtomisuse,misapplication, neglect, alteration,accidentoruncontrollable
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,
Applications
Preinstallation Checklist
1. Inspect your progressing cavity grinder pump. If the unit has been damaged in
shipment, contact your dealer before installing. Do Not remove the test plugs
in the cover nor the motor housing.
2. Carefully read all literature to familiarize yourself with details regarding
installation and use. Retain materials for future reference.
1. Make sure pump connection contains a ground terminal. The power cord on all
Zoeller Progressing Cavity Grinder Pumps contains a green conductor for
grounding to help protect you against the possibility of electric shock.
2. Make certain the electrical service is within reach of the power supply cord.
3. Make sure any panels and branch circuits are equipped with proper size fuses
and circuit breakers. An independent power circuit is recommended, sized
according to the National Electrical Code, for the current shown on the grinder
pump nameplate.
4. For your protection, always disconnect the power source to the grinder pump before
handling.All grinder pumpsmust be properly grounded and wired in accordance
with the “National Electrical Codes” and all local codes and ordinances.
5. Installation of electrical hardware and checking of control panels
and circuits should be performed by a qualified licensed electrician.
6. Risk of electrical shock - These pumps have not been investigated for use in
swimming pool areas.
7. Prop65 Warning for California residents:
: Cancer and Reproductive Harm-
www.P65Warning.ca.gov.
CAUTION
SEE BELOW FOR
LIST OF CAUTIONS
SEE BELOW FOR
LIST OF WARNINGS
Progressing cavity grinder pumps are designed for
pressure sewer applications. A UL listed and CSA certied pressure relief
valve must be installed in the system to prevent excessive pressure buildup.
1. Make sure the power source is capable of handling the electrical requirements of
the grinder pump, as indicated on the nameplate.
2. A disconnect switch should be installed in the circuit bringing electrical power to
the pump.
3. The progressing cavity grinder pumps are operated by variable level oat
control switches. It is the responsibility of the installing party to see that oat
control switches will not hang up on the grinder pump or other pit peculiarities
and are secured so that the grinder pump will shut off. It is recommended to
use rigid pipe and ttings and the pit be at least 24" in diameter for simplex
systems and 36" or larger in diameter for duplex systems.
4. Grinder installations should be checked yearly for debris and/or build up
which may interfere with the “ON” or “OFF” positions of variable level oat
controlswitches.Repair andservice,other thancutterassembly maintenance,
should be performed by a Zoeller Authorized Service and Warranty Center or
Customer Care Center only.
5. Maximum operating temperature must not exceed 130°F,
(54°C).
6. Do not operate an unsubmerged progressing cavity pump. Dry pump operation
may damage the hydraulic stator due to lack of lubrication. Do not run dry.
7. To ensure proper pump operation, a swing or flapper style check valve must be
installed in the pump discharge line. A faulty or non-functional check valve when
combined with a pressure sewer may prevent the pump from starting.
Donotattempttoturnthecutterbladeslocatedonbottomof
theunitwith fingers.Usea wrenchwhencheckingor removingthecutter.
1. Zoeller Progressing Cavity Grinder Pumps are designed for grinding and
pumpingsanitarysewage fromsubmersiblelift stations. Thepumpis intended
to grind and pump reasonable quantities of items normally found in sanitary
sewage applications.
2. Zoeller 810 and 815 Progressing Cavity Grinder Pumps can be installed in
new applications or as a replacement for another grinder of like size and
capacity.
3. The 810 and 815 can be installed in a Prepackaged Job Ready System or may
be used in a Field Assembled basin package. Page 5 shows a couple of the
Prepackaged Systems. Field Assembled Systems are discussed on page 3.
4. Zoeller 810 and 815 Grinder Pumps can be retrotted to existing positive
displacement pump installations.
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.

3
© Copyright 2020 Zoeller®Co. All rights reserved.
Recommended Limits of Application for Progressing Cavity Grinder Pumps
Simplex Station Duplex Station
Model HP Homes GPD Homes GPD
810 1 1 400 2 800
815 2 1 400 2 800
These recommended application limits are for pump stations pumping to a gravity main. Low-pressure collection systems should be designed with a pump located at
each house. For applications where a lift station would handle more than 2 homes, consider the 840 or 71 Series grinder pump. For applications where a lift station
would handle more than 60 homes, a solids handling type pump should be considered.
General Information
FIGURE 1.
PROGRESSING CAVITY
GRINDER PUMP DESCRIPTION
1. Pumps are constructed of cast iron protected with powder coated epoxy
for long life when pumping sewage in submersible applications. The cutter
assembly is comprised of stainless steel components hardened to a value of
55-60 on the Rockwell C scale; a star shaped cutter and a precision ground
at disk. Cutting action takes place with the rotation of the cutter blades at
1750 RPM against the stationary cutter plate (see page 7).
2. The cutter mechanism on the model 810 & 815 is single directional.
3. Pump motors are single phase. Single phase motors require a run capacitor,
which is mounted in the the upper cap of the pump (ref. page 4). The units
have an internal thermal overload.
4. The 810 & 815 progressing cavity grinder pumps are single seal.
5. Thepressure relief valveprovides motor protection under inadvertent shut-off
head condition.
6. A progressing cavity grinder pump is an intermittent duty pump designed for
pumping sanitary sewage. It is not a dewatering or trash pump.
FIELD ASSEMBLED INSTALLATION
1. Installation and piping instructions are included with the control panel, rail system
and basin instructions. If pump is being retrotted to an existing rail system,
accessory parts may be required. Consult the factory and advise make and model
of rail system being used.
2. Refer to the appropriate Indoor/Outdoor prepackaged instructions for more
information on system installation.
3. All electrical connections including pump to control box and power supply to
control panels must comply with the “National Electrical Code” and applicable
local codes. Conduit and panel enclosure openings must have a gas-tight seal.
Installation of electrical panels and connections should be made by a qualied
licensed electrician.
4. A properly sized disconnect switch, supplied by others, shall be installed on the
service side of the pump and control panel.
5. When used in a pressure sewer, install an anti-siphon valve (see Fig. 5A).
018330
0
2 4 6 8 10 12 14 16
0
20
40
60
80
100
120
140
160
180
200
260
PUMP PERFORMANCE CURVE
MODEL 810/815
8
16
24
32
40
48
56
64
GALLONS
LITERS
METERS
FEET
TOTAL DYNAMIC HEAD
FLOW PER MINUTE
220
240
72
20 40 60
10
20
30
40
50
60
70
80
90
100
110
0
PSIG
TOTAL DYNAMIC HEAD
2 HP
1 HP
LOW PRESSURE SEWER
TYPICAL
OPERATING
RANGE
DESIGN PRESSURE (150 FT OR LESS)
TOTAL DYNAMIC HEAD/FLOW
PER MINUTE
MODEL
Feet
810
Meters Gal. Liters
MODEL
815
5
10
20 6.1
3.0
1.5 14.6 55
40
60 18.3
12.2
80
100 30.5
24.4
120 36.6
140
150 45.7
42.7
55
53
50
47
44
41
38
36
34
14.4
14.0
13.2
12.5
11.7
10.9
10.1
9.4
9.0
160 48.8
180 54.9
200 61.0
220 67.1
240 73.2 5.5
33
30
27
24
21
8.6
7.8
7.0
6.3

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© Copyright 2020 Zoeller®Co. All rights reserved.
Electrical Data
Pump Wiring Instructions
FOR YOUR PROTECTION, ALWAYS DISCONNECT THE PUMP FROM ITS POWER SOURCE BEFORE HANDLING.
All electrical connections must be wired and grounded in accordance with the National Electrical Code and all applicable
local codes and ordinances.
“Risk of electrical shock” Do not remove the power supply cord and strain relief or connect conduit directly to pump.
Installation and checking of electrical circuits and hardware should be performed by a qualied licensed electrician.
FIGURE 3A. Models E810
and E815 Wiring Diagram
002397
254 mm (10") MAX.
127 mm (5") MIN.
FIGURE 2. Pump Control Switch Installation
Use the diagram above to secure the oat switch properly and obtain the proper tether to customize the on-off cycle to each application. Note the minimum off
level shown above. On Prepackaged Systems, the tether length is set at 5”.
Note:Failure tokeepwithin propertether limits
may prevent reliable switch operation.
Note: Cable must be mounted in horizontal
position.
Determining Pumping Range
in Inches (1 inch - 2.5 cm)
Use only as a guide. Due to weight
of cable, pumping range above
horizontal is not equal to pumping
range below horizontal. Ranges are
based on testing in nonturbulent
conditions. Range may vary due to
water temperature and cord shape.
As tether length increases, so does
the variance of the pumping range.
Tether Length (inches) 5 10
Pumping Range (GPM) 9 13.5
min. max.
SK305D
SK2651
ALARM FLOAT
PUMP CONTROL
FLOAT TREE
FLOAT
406 mm (16")
MIN. OFF
Amps KVA
Code
Winding
Resistance
Line-to-Line
Model BHP RPM Voltage Phase Hertz Full Load Shut Off Locked
Rotor
E810 1 1750 230 1 60 7.0 7.0 24.5 G 2.3 / 2.0*
E815 2 1750 230 1 60 10.5 10.5 44.0 B 1.80 / 1.60*
RE810 1 1750 230 1 60 7.0 7.0 24.5 G **
RE815 2 1750 230 1 60 10.5 10.5 44.0 B **
I815 2 1750 200 1 60 12.0 12.0 49.5 B 1.4 / 1.3*
RI815 2 1750 200 1 60 12.0 12.0 49.5 B **
RWH815 2 1750 200 1 60 12.0 12.0 49.5 B **
* Line to line reading from the electrical load will only reect the run winding resistance. Start winding resistance can only be measured after
removing the cover.
** Start & run winding resistance can only be measured after removing the cover and checking at the through wall terminals.
152554
RUN
O.L.
MOTOR
(3)
BLUE RED
WHITE
BLACK
GREEN
L1 L2
STA RT
(1) (2)
YELLOW
BLUE RED
CAPACITOR
(WHITE) (BLACK)
(BROWN)
FIGURE 3B. Models RE810
and RE/RI815 Wiring Diagram
(932 Replacement Grinder
Assembly w/ Manual Run)
RUN
O.L.
MOTOR
(3)
BLUE RED
GREEN
START
(1) (2)
YELLOW
BLUE RED
CAPACITOR
(WHITE) (BLACK)
WHITE
BLACK
RED
YELLOW
BLUE
ORANGE
R
RELAY
4
60
1
R
2
64
5
GE RELAY
(BROWN)
1)
NOTES:
INSULATORS REQUIRED ON GE RELAY TERMINALS 2 & 5;
OMRON RELAY TERMINALS 1 & 4.
RUN
O.L.
MOTOR
(3)
BLUE RED
STA RT
(1) (2)
YELLOW
(WHITE) (BLACK)
(BROWN)
SWITCH
PUMP
SWITCH
ALARM
R
4
60
1
R
2
64
5
GE RELAY
BLUE RED
CAPACITOR
WHITE
BLACK
RED
RELAY
YELLOW
BLUE
GREEN
ORANGE
BLUE
WHITE
BLACK
BLACK
WHITE
BLUE
RED
BLACK
WHITE
1)
NOTES:
INSULATORS REQUIRED ON GE RELAYTERMINALS 2 & 5;
OMRON RELAY TERMINALS 1 & 4.
153381
FIGURE 3C. Models RWD810 and
RWD/RWH815 Wiring Diagram
(932 Replacement Grinder
Assembly w/ Intergral Pump and Alarm
Float w/Manual Run)

5
© Copyright 2020 Zoeller®Co. All rights reserved.
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.
Typical Outdoor Grinder Pumping System Installations
FIGURE 4A - PACKAGED SYSTEM WITH
FLEXIBLE HOSE DISCONNECT
24" (60.9 cm)
MINIMUM
ANTI FLOATATION RING
1-1/4" NPT BRASS CHECK VALVE
SHUT-OFF BALL VALVE
ALARM FLOAT
PUMP CONTROL FLOAT
12" (30.4 cm) MIN. OFF LEVEL
FIBERGLASS BASIN
1/8" (3 mm) 302 STAINLESS
STEEL LIFTING CABLE
1-1/4" FLEXIBLE
DISCONNECT FITTING
1-1/4" BULK HEAD
DISCHARGE FITTING
24" (60.9 cm)
SOLID FIBERGLASS
COVER
GROMMET SEAL
4" INLET W-SEAL
(FIELD INSTALLED)
MINIMUM
60" (152 cm)
DISCHARGE HOSE
HIGH WATER ALARM
(NOT INCLUDED)
WATERTIGHT "QWIK BOX"
(NOT INCLUDED)
FLOAT TREE
48" (122 cm)
72" (183 cm)
1-1/4" SCH 80 PVC PIPE
BRASS ANTI-SIPHON VALVE
1-1/4" MALE NPT THREAD X SLIP FITTING
1-1/4" MALE NPT THREAD X
SLIP FITTING
2" PVC ELECTRICAL PIPE
SK2540
SK2533
6-5/8” (143 mm)
8-3/8”
(213 mm)
5-1/4”
(133 mm)
4-3/8”
(111 mm)
10-1/2”
(267 mm)
DIA.
22-3/8” (568 mm)
4” (103 mm)
FIGURE 5
1-1/4" NPT
ANTI-SIPHON
VALVE
1-1/4" NPT CHECK VALVE
DISCONNECT
1-1/4" SHUT OFF VALVE
(HOME OWNER)(JWA)
CURB/VALVE
BOX
CHECK VALVE
SHUT OFF
VALVE
MAIN
OPTIONAL LOCATION
1-1/4" NPT ANTI-SIPHON
VALVE
POSITIVE DISPLACEMENT
GRINDER PUMP
1-1/4" DISCHARGE LINE
FIGURE 5A
SK2810
R
LOUISVILLE, KY
PIPE SEAL
24" MIN.
4" RUBBER INLET
(FIELD INSTALLED)
ANTI-FLOTATION
FIBERGLASS
DISCHARGE FITTING
1-1/4" BULK HEAD
ALARM FLOAT
1-1/4" CHECK VALVE
1-1/4" DISCHARGE PIPE
HIGH LEVEL
1-1/4" BALL VALVE
FIBERGLASS BASIN
"ON - OFF" FLOAT
PUMP CONTROL
PIPE AND FITTINGS
1-1/4" PVC SCH 80
FLOAT TREE ASSEMBLY
STEEL LIFTING CABLE
1/8" 302 STAINLESS
1-1/4" PVC PIPE
FLANGE
3/4" GUIDE RAIL
ANTI-SIPHON VALVE (OPTIONAL)
1-1/4" H X 1-1/4" Z-RAIL
DISCONNECT SYSTEM, EPOXY
COATED DUCTILE IRON
2" TO 1-1/4" REDUCER
SIMPLEX CONTROL PANEL
(FIELD INSTALLED)
SK3091
FIGURE 4B - PACKAGED SYSTEM WITH
Z-RAIL®DISCONNECT SYSTEM

6
© Copyright 2020 Zoeller®Co. All rights reserved.
Outdoor Prepackaged System Installation Instructions
This set of instructions is for factory prepackaged outdoor progressing cavity grinder systems only. If this is a eld assembled outdoor
system you can use these instructions as a guideline.
Operation
GENERAL
Zoeller pumps are lubricated and tested at the factory prior to shipment and
require minimum pre-start-up maintenance.
Maximum operating temperature of pump liquid for grinder pumps must not
exceed 130°F (54°C).
These units are not designed to handle liquids other than sanitary sewage. If
pump is used to dewater areas with contaminated liquids with heavy or abrasive
materials, the warranty will be voided.
NAMEPLATE DATA
The nameplate, located on the top of the pump, indicates specic information
aboutthe construction ofthe pump. The model number and datecode information
should be recorded on the front page in the “Owner’s Information” section of
this manual.
SHORT TERM STORAGE
When not in use, the pump should be stored and the following is advised:
• Drain pump housing by laying pump horizontal with discharge down. Then
stand pump on legs.
• Storepumpinsidewheneverpossibleorcoverwithsometypeofprotectivecovering.
• Tape or seal in plastic bag the terminal ends of wire leads.
• Spray coat unpainted surfaces with rust inhibiting oil.
• The impeller should be rotated every six months in order to keep the seal
lubricated and not develop a permanent set.
If panel is to be stored, the following is advised:
• Store the panel inside whenever possible and leave in the shipping box.
• All openings shall be sealed.
• Store in an upright position.
• Do not stack anything on top of panel.
START-UP PROCEDURE
Before placing the equipment into operation the following should be checked:
• Clean pit.
• Electrical boxes dry and securely installed.
• Floats positioned properly.
• Discharge valves open.
• Adequate water level in basin for pump submersion.
Once the above has been veried proceed with the following checks:
• Pump power cables and control oats properly installed and voltage veried.
• Conduit connections to panel are properly sealed.
• After installing the pump into the basin, with adequate submergence, open the
discharge valve fully. Start the unit using manual controls. If ow is appreciably
less than rated performance, pump may be air locked. To expel trapped air,
jog the unit several times, using the manual controls.
• Have a qualied electrician take voltage and current measurements with the
pump running. Record these readings in the space provided in the “Owner’s
Information” section on page 1 of this manual for future reference.
ADJUSTMENT PROCEDURE
Pumps: No adjustments are required.
Floats: Refer to the system drawing or to the panel wiring schematic for the
desired location of each oat switch setting. The off switch should
deactivate the pump before the water level drops to the mid-point of
the pump.
Valves: Discharge valves should be placed in the fully open position. Systems
shouldnot beoperated forextended periodsof timewith thedischarge
valves partially closed due to damaging the valve. Check for an anti-
siphon valve when used in a pressure sewer.
SHUTDOWN PROCEDURES
If a system is shutdown for more than six months, the following is recommended:
Pumps: If pit is to remain dry, then the pump can remain in the pit. Do not run
dry. If the pit is to remain wet, the pump should be removed and stored
as noted above.
Panels: The panel should have all openings sealed to prevent moisture and dust
from entering the enclosure. Prior to restarting system, the panel should
be inspected for presence of moisture and any loose connections.
Valves: Consult the valve/actuator supplier for information concerning these
systems components.
1. Review the drawing in Fig. 4 on page 5 and the actual system to become
familiar with the components in the packaged grinder pump system. Review
where the unit will be installed. Determine where the power feed, inlet pipe,
and discharge pipe will be located.
2. Removetheunitfrompacking. Prepackagedoutdoorsystemsarepreassembled
at the Zoeller Company and require a minimum of eld assembly work. Float
switches are set and tethered for proper operation from the Factory. The
alarm switch should be located 2” above the pump “on” level.
3. Floatswitchesare tied inplaceforshipping purposesonallmodel prepackaged
systems. Cut the cable tie around each oat switch bulb or the unit will not
operate properly. Verify that where the oat switches are set will work for
your application. Verifying that the float switches are set properly and will not
hang up inside the basin is the responsibility of the installing contractor.
4. Dig a hole for the basin. The hole should be at least 24” larger in diameter
than the basin diameter to provide 12” of backll all around and deep enough
to provide either 12” of compacted backll or 6” when a concrete pad is
required. Ensure the removable cover extends above the nished grade line
and the grade slopes away from the unit. Backll and subbase should be 1/8”
–3/4” pea gravel or 1/8” –1/2” crushed stone. (Reference basin installation
instructions included with unit)
5. Note: Care must be taken when excavating in order to avoid underground utilities
and disturbance of existing structure foundations. The hole should be located at
least ten feet from adjacent structures. Additional distance may be required to
sufficiently locate the basin outside of the loading area of the adjacent structures.
6. The location of the inlet tting is determined by the depth of the inlet pipe. The
inlet tting must be used with 4” pipe. It is best to install the inlet on the side of
the basin opposite the oat switches. To install, use a 5” hole saw to drill into
the side of the basin at the correct elevation. Center the hub inner diameter
with the hole in the basin. Attach the hub to the side of the basin using the
sealant and hardware provided.
7. The bottom of the excavation can now be back lled and compacted. Set
basin in hole and connect the 4” inlet pipe to the inlet hub.
8. The discharge piping is connected to the 1-1/4” threaded fitting located
in the basin sidewall.
9. Connect pull rod to Pump assembly. Connect lift cable to top of pump. Lower
the pump into basin ensuring the discharge pipe bracket slides into the
disconnect tting.
10. Pouring a concrete anchor around system can now be completed. Basin
should be lled with water when pouring concrete to minimize movement
of the system. Back ll around basin with specied media. Care should
be used to avoid damaging components or leaving voids when back lling.
Refer to Basin installation reference guide on more specic requirements.
11. Note: The progressing cavity grinder basin is a sewage holding tank. Vent
connection should be installed in accordance with all national, state and local
plumbing codes.
12. Dig a trench for the electrical conduit. Trench should be located at least
18” deep and follow all applicable NEC codes. Connect electrical wiring to
Junction box according to wiring instructions included in this manual and
wiring diagram in box. Use the potting kit provided with the junction box.
Use the included sealant when closing junction box.
13. If used, a control panel is installed within sight of the system. Connect oat
switches and pump cords according to the “Pump Wiring Instructions”
found in this manual and located inside the panel enclosure.
14. Remove any debris from the basin. Using clean water, check the system
for proper operation.
15. Seal and secure the lid using the proper bolts and sealant when using a lid
without a formed gasket.
16. Add water to the basin and test the system for leaks and proper pump
operation.
17. Record system start up data for future reference.

7
© Copyright 2020 Zoeller®Co. All rights reserved.
Cutter Maintenance
General Maintenance
FIGURE 7.
1. All power circuits must be disconnected and locked out before any attempts
are made at servicing. The cutter and disc can be removed and sharpened
by grinding the cutting faces. Both cutter and disc must be removed from the
pump. Removal of these parts can be accomplished in the eld by removing
pump from the sump and positioning horizontally to access the intake of the
pump. If seals or other repairs are required, the pump must be totally removed
and serviced in a shop by a qualied pump technician or authorized service
center.
2. Thoroughly clean the cutter and disc assembly. Tilt pump back to the vertical
position to make certain the end play has been removed. Check and record
the clearance between the cutter and disc with a feeler gage. The correct
running clearance is between 0.007" and 0.012".
3. With pump in horizontal position, heat the hex head bolt in the center of the
cutter with a propane torch. The bolt must be heated to 350° F to soften the
thread lock sealer on the bolt for ease of removal. Remove the bolt by turning
in a counterclockwise rotation. It will be necessary to use a wood block to
prevent the cutter from turning while removing the bolt. Pull cutter from the
shaft and remove the spacer shims located behind the cutter.
4. Remove the six cap screws holding the disc and remove disc from the pump.
5. The disc and cutter can be replaced with new service parts or resurfaced
by grinding. Resurfacing is accomplished by surface grinding both disc and
cutter to a 32 micro nish. Do not attempt grinding in the eld. Send parts to
a qualied machine shop or return to the factory for repair. The disc, cutter
and shims are a matched set. Keep parts together. Measure disc before and
after resurfacing with micrometer and record measurements.
6. After resurfacing, the disc and cutter must be at within 0.001". If the disc has
been surface ground, it will be necessary to remove shims to compensate for
the material removed from the disc. As a starting point, remove shims of the
same thickness as the amount machined from the cutter disc (step 6 above).
Final running clearance must be between 0.007" and 0.012". Be sure pump is
in vertical position and all end play has been removed before measuring.
7. Clean bottom of pump where disc is located and replace disc and retainer
screws. Torque to 63-67 in-lbs. Replace cutter with the correct shims. Install
washer and torque hex head bolt to 71-75 in.-lbs. apply Loctite 262 thread-lock
sealant or equal to bolt threads prior to insertion. Check running clearance
withpump invertical positionto removeend play.Clearance mustbe between
0.007" and 0.012" to obtain efcient grinding when pump is put back in service.
8. Check the oil in the motor housing before reinstalling. Contact the factory if
the oil has a milky appearance or burnt smell. The level should be even with
the ll plug when pump is in the upright position. Add oil if required. Use
insulating oil supplied by the factory.
To remove cutter: Heat the center bolt to 350 °F
to loosen Loctite®thread sealant.
Grind the Cutter and Disc seen here to a 32 micronish. Surfaces
must be at to within 0.001" T.I.R. Gap must be between 0.007"
and 0.012" on these parts.
Repair and service should be performed by a Zoeller
Authorized Service & Warranty Center or Customer Care Center only.
SAFETY PROCEDURES
For your protection, always disconnect
pump and panel from its power source before handling.
Never enter the basin until it has been
properly vented and tested. Any person entering a basin
should be wearing a harness with safety rope extending
to the surface so that they can be pulled out in case of asphyxiation.
Sewage water gives off methane and hydrogen sulde gases, both of
which can be highly poisonous.
Installation and checking of electrical circuits and hardware should be
performed by a qualied electrician.
Pump is never to be lifted by power cord.
Unitmustbecleanedanddisinfected,inside
the pumping chamber and all exterior surfaces, prior to
servicing.
GENERAL SYSTEM INSPECTION
Before the system is placed into operation, it should be inspected by a
qualied technician.
Wiringandgroundingmustbeinaccordance
with the National Electrical Code and all applicable local
codes and ordinances.
LUBRICATION PROCEDURES
No lubrication is required.
If pumps are to be stored for more than six months, refer to short-term
storage procedure in the Operation section.
PREVENTIVE MAINTENANCE
Preventive maintenance is recommended to ensure a long service
life from the product. Provided is a suggested maintenance schedule.
Every year:
• Inspect basin, report any sighting of grease accumulation.
• Check for proper and unobstructed oat operation.
• Listen for proper check valve operation.
Every 8 years or 2,000 hours of operation:
• Remove pump, inspect and service using a Zoeller rebuild kit.
• Flush and clean basin.

8
© Copyright 2020 Zoeller®Co. All rights reserved.
Service Checklist
Electrical precautions. Before servicing a grinder pump, always shut off the main power circuit. Make sure you are wearing insulated
protective sole shoes and not standing in water. Under ooded conditions, contact your local electric company or a qualied licensed electrician for
disconnecting electrical service to the pump prior to removal.
Grinder pumps contain oil which becomes pressurized and hot under operating conditions. Allow 2-1/2 hours after shut down before
servicing pump.
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
Condition Common Causes
A. Pump will not start or run. Blown panel or circuit breaker fuse, low voltage, thermal overload open, defective
capacitor circuit, cutter clogged, damaged hydraulic stator or rotor, oat switch held
down or defective, incorrect wiring in control panel, water in cap assembly, check valve
not installed or malfunctioning.
B. Motor overheats and trips on overload. Incorrect voltage, hydraulic rotor or cutter blocked, negative head (discharge lower
than intake of pump). Defective “off” oat. Pump runs continuously at low water level.
Low oil level in motor shell. Pump running at shut-off head, check valve not installed or
malfunctioning.
C. Pump will not shut off. Debris under oat assembly, defective switch, incoming sewage exceeds capacity of
pump.
D. Pump operates but delivers little or no water. Intake clogged with grease or sludge, damaged hydraulic stator or rotor, low or incor-
rect voltage, clogged discharge line, operating near shut-off head.
E. Pump starts and stops too often. Check valve stuck open or defective. Sump pit too small to handle incoming sewage.
Level control out of adjustment. Thermal overload tripping.
F. Large red ashing light comes on at control box. High water in pit. Check pump for clogging, or overload trip.
G. Grease and solids accumulate in pit around pump. Break up solids and run pump with water running into the pit. Allow level to lower to the
pump intake. Continue until solids are cleared from the pit. Do not drain kitchen grease
down the sink.
If the above checklist does not reveal the problem, consult the Product Support Department. Do not attempt to service or otherwise disassemble pump.
Service must be performed by a Zoeller Authorized Service Station. Go to https://www.zoellerpumps.com/en-us/where-to-buy/service-locator to find the Zoeller
Authorized Service & Warranty Center or Customer Care Center in your area.