Zoeller 7008 User manual

1
© Copyright 2020 Zoeller®Co. All rights reserved.
SECTION: Z4.10.300
ZM2608
0520
Supersedes
0918
NOTICE TO INSTALLER: Instructions must remain with installation.
Congratulations on the purchase of a Zoeller submersible grinder
pump. Since 1939 the name Zoeller has represented the standard for
submersible dewatering and sewage pumps. The same high quality
workmanshipandeasymaintenancedesignhasbeenincorporatedinto
this line of heavy-duty submersible grinder pumps. This Zoeller pump
will provide years of trouble-free service when installed according to
the manufacturer’s recommendations.
Thismanualincorporatestheinstallation,operation,maintenance,
and service instructions into one document to aid in the ownership of
Model Number: ______________ Date Code: _______________
Automatic  Nonautomatic
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 7008, 7009, 7010 SUBMERSIBLE GRINDER UNITS
a Zoeller submersible wastewater product. Please read and review
this manual before installing the product. Follow the steps in this
manual for a proper start-up. Many items contained within, when
followed correctly, will not only ensure a long and problem-free life
for the pump, but also save time and money during installation. For
replacement parts lists, please reference ZM2994 for 7008 series,
ZM2996 for 7009 series, and ZM2633 for 7010 series. Should further
assistancebe necessaryplease callour ProductSupport Department
at 1-800-928-PUMP (7867).
Owner’s Information
Table of Contents
Safety Instructions.......................................................................... 1
Limited Warranty............................................................................. 2
Preinstallation Checklist................................................................. 3
General Information......................................................................... 4
Pump Wiring Instructions ............................................................... 5
Typical Indoor Prepackaged System .............................................. 6
Indoor Prepackaged Installation Instructions................................ 7
Typical Outdoor Prepackaged System............................................ 8
Outdoor Prepackaged Installation Instructions............................. 9
Operation........................................................................................ 10
Cutter Maintenance....................................................................... 11
Service Checklist ........................................................................... 12
Safety Instructions
TO AVOID SERIOUS OR FATAL PERSONAL INJURY OR MA-
JOR PROPERTY DAMAGE, READ AND FOLLOW ALL SAFETY
INSTRUCTIONS IN THIS MANUAL AND ON THE PUMP.
THISMANUALIS INTENDEDTOASSISTINTHE INSTALLATIONAND
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.
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.
PUMPS WITH THE “UL” MARK AND PUMPS WITH THE “US” MARK ARE
TESTEDTO ULSTANDARD UL778. CSA CERTIFIED PUMPS ARE CERTIFIED
TO CSA STANDARD C22.2 NO. 108.
CAUTION
REFER TO WARRANTY ON PAGE 2.
P/N 151085
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:
zoellerengineered.com
Product information presented
here reects conditions at time
of publication. Consult factory
regarding discrepancies or
inconsistencies.
Register your
Zoeller Engineered Product
on our website:
http://reg.zoellerengprod.com/
U.S. Patent No.
8,562,287

2
© Copyright 2020 Zoeller®Co. All rights reserved.
Manufacturer warrants, to the purchaser and subsequent owner during
thewarrantyperiod,everynewproducttobefreefromdefectsinmaterial
and workmanship under normal use and service, when properly used
and maintained, for a period of 18 months from date of manufacture, 12
months from date of purchase (proof of purchase required) or 12 months
from the date of start up when a start up report is on le with Zoeller
Company. Parts that fail within the warranty period, that inspections
determine to be defective in material or workmanship, will be repaired,
replacedorremanufacturedatManufacturer'soption,providedhowever,
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
materialorproduct that hasbeen disassembled withoutprior approval of
Manufacturer, subjected to misuse, misapplication, neglect, alteration,
accidentoractofGod;thathasnot been installed, operated ormaintained
inaccordancewithManufacturer'sinstallationinstructions;thathasbeen
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 applications other
than raw sewage 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 war-
ranty, so the above limitation may not apply to you. Some states do not
allowtheexclusionor limitation ofincidentalor 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
2. Zoeller Grinder Pumps can be installed in new applications or as
a direct replacement for other grinder application of like size and
capacity.
3. Refer to the Zoeller models 7020 and 7021 when retrotting existing
positive displacement pump installations.
Applications
1. Zoeller Grinder Pumps are designed for grinding and pumping
sewage from single family residential and commercial duty sewage
pump stations. The pump is intended to grind and pump reasonable
quantities of items normally found in domestic sewage.
*Zoeller Company does not recommend a simplex station on anything over two homes in order to maintain continuous service
during unusual conditions.
Recommended Limits of Application 7000 Series Grinder Pumps
These recommended application limits are for pump stations pumping to a gravity main. Low-pressure pipe systems should be designed with a
pump located at each house. For applications where a lift station would handle between 15 and 60 homes, consider the 71 Series grinder pump.
For applications where a lift station would handle more than 60 homes, a solids handling type pump should be considered.
Simplex Station Duplex Station
Model HP Homes GPD Homes GPD
7020 Progressing Cavity Grinder 1 1 400 2 800
7021 Progressing Cavity Grinder 2 1 400 2 800
7008, 7009, & 7010 1 - 2 1 400 2 800
7011 w/o Reversing Control 2 2* 800 10 4,000
7011 w/ Reversing Control 2 2* 800 15 6,000
7012 2 2* 800 10 4,000
7013 2 2* 800 10 4,000
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.
Preinstallation Checklist
1. Inspect your grinder pump. If the unit has been damaged in shipment,
contact your dealer before installing. Do Not remove the test plug 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
ZoellerGrinderPumpscontainsa green conductor for grounding to help protect
you against the possibility of electric shock.
2. Make certain the receptacle 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. Automatic pumps have three prong plug caps and must be connected to a three prong
grounded receptacle with ground fault circuit interrupter (GFCI).
5. For your protection, always disconnect the power source to the grinder pump before
handling. Allgrinderpumpsmustbeproperlygroundedandwiredinaccordance
with the “National Electrical Codes” and all local codes and ordinances.
6. Installation of electrical hardware and checking of control panels and circuits
should be performed by a qualied licensed electrician.
7. Risk of electrical shock - These pumps have not been investigated for use in
swimming pool areas.
8. Prop65 Warning for California residents:
: Cancer and Reproductive Harm-
www.P65Warning.ca.gov.
SEE BELOW FOR LIST OF WARNINGS
CAUTION
SEE BELOW FOR LIST OF CAUTIONS
Do not attempt to turn cutter located on
bottom of the unit with ngers. Use a wrench when checking
or removing cutter.
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 ahead of the pump.
3. If Grinder pumps are operated by control panels with variable level oat
control switches, it is the responsibility of the installing party 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 24" in diameter for simplex systems and
36" in diameter for duplex systems or larger.
4. Grinderinstallationsshouldbechecked yearly fordebrisand/orbuildupwhich
may interfere with the “ON” or “OFF” positions of variable level oat control
switches.Repairandservice, other thancutterassemblymaintenance,should
beperformedbyZoeller Engineered Productsauthorizedservicestationsonly.
5. Maximum operating temperature must not exceed 130 °F,
(54 °C).
6. Pump and float switch electrical connections must be permanently installed,
operational and protected from submergence.
7. Junctionbox conduit must be installed with watertight connection.Zoellerjunction
boxes include a UL Listed potting kit for sealing conduit. Failure to properly install
this sealant material could void warranty.
Electrical Data
Amps KVA
Code
Winding
Resistance
Line-to-Line
Model HP Mode RPM Voltage Phase Hertz Full Load In Air Shut Off Locked
Rotor
WM7008 1 Auto 3450 115 1 60 13.6 8.0 10.2 46 F 0.67 / 3.4
N7008 1 Non 3450 115 1 60 13.6 8.0 10.2 46 F 0.67 / 3.4
WH7008 1 Auto 3450 200-208 1 60 7.7 3.7 8.7 27.7 F 2.0 / 1.4
I7008 1 Non 3450 200-208 1 60 7.7 3.7 8.7 27.7 F 2.0 / 1.4
WD7008 1 Auto 3450 230 1 60 6.5 2.8 4.5 30 H 1.7 / 2.6
E7008 1 Non 3450 230 1 60 6.5 2.8 4.5 30 H 1.7 / 2.6
F7008 1 Non 3450 230 3 60 6.9 5.3 5.8 44.4 S 2.15
J7008 1 Non 3450 200 3 60 7.5 5.7 6.2 47.4 S 1.7
G7008 1 Non 3450 460 3 60 3.7 2.5 3.0 21.6 S 8.2
BA7008 1 Non 3450 575 3 60 2.7 2.1 2.3 17.5 S 13.6
WH7009 1.5 Auto 3450 200-208 1 60 12.0 8.8 8.7 61.6 K 0.87 / 2.0
I7009 1.5 Non 3450 200-208 1 60 12.0 8.8 8.7 61.6 K 0.87 / 2.0
WD7009 1.5 Auto 3450 230 1 60 10.8 7.6 8.3 57 K 1.2 / 2.0
E7009 1.5 Non 3450 230 1 60 10.8 7.6 8.3 57 K 1.2 / 2.0
F7009 1.5 Non 3450 230 3 60 8.2 5.3 6.5 44.4 N 2.15
J7009 1.5 Non 3450 200 3 60 9.2 5.7 7.1 47.4 M 1.7
G7009 1.5 Non 3450 460 3 60 4.2 2.5 3.3 21.6 N 8.2
BA7009 1.5 Non 3450 575 3 60 3.2 2.1 2.6 17.5 N 13.6
WH7010 2 Auto 3450 200-208 1 60 15.5 8.8 11.0 61.6 G 0.87 / 2.0
I7010 2 Non 3450 200-208 1 60 15.5 8.8 11.0 61.6 G 0.87 / 2.0
WD7010 2 Auto 3450 230 1 60 13.7 7.6 10.2 57 H 1.2 / 2.0
E7010 2 Non 3450 230 1 60 13.7 7.6 10.2 57 H 1.2 / 2.0
F7010 2 Non 3450 230 3 60 9.9 5.3 7.3 44.4 K 2.15
J7010 2 Non 3450 200 3 60 11.0 5.7 8.1 47.4 K 1.7
G7010 2 Non 3450 460 3 60 5.0 2.5 3.7 21.6 K 8.2
BA7010 2 Non 3450 575 3 60 3.9 2.1 2.9 17.5 K 13.6

4
© Copyright 2020 Zoeller®Co. All rights reserved.
General Information
GRINDER PUMP DESCRIPTION
1. Pumps are constructed of cast iron with powder coated epoxy
protection for long life when pumping sewage in submersible
applications. The cutter assembly is comprised of 440C stainless
steel components hardened to a value of 55-60 on the Rockwell C
scale; a two-bladed cutter and a precision ground at disk. Cutting
action takes place with the rotation of the cutter in the clockwise
(looking down on the unit) direction only, see Fig. 6 on page 11.
2. Single phase motors' starting relay, starting capacitor and a run
capacitor are located in the pump.
3. These grinder pumps have a single seal design and do not have
sensor wires.
4. Automatic reset thermal overload protection is integral on single
phase motors. For three phase models, overload protection is to be
provided in the control panel.
FIELD ASSEMBLED INSTALLATION
1. Installationand piping instructions are included withthe railsystem
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
on pages 6-9 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 and watertight seal. Installation of
electrical panels, conduit and connections should be made by a
qualied licensed electrician. A UL Listed potting kit, P/N 10-2350,
is available from Zoeller Company.
4. When installing a pump with a check valve, or a rail system with
a check valve, you must give the pump case time to ll to help
prevent air lock when lowering the unit into the liquid. The pump
case has an air vent located behind the discharge. This air vent is
across the pump housing mounting surface and must be cleaned
before each reinstall. An extra air vent hole (3/16") may be drilled
in discharge pipe below the check valve to help prevent air lock.
This drilled hole must be cleaned before each reinstall. After the
pump is installed, run the unit submerged to assure the pump case
is lled (Water should come out of 3/16" diameter hole).
154108
1-1/4" NPT
18-5/8" [473 mm]
5" [127 mm]
6-1/2"
[165 mm]
4" [102 mm]
4" [102 mm]
7-5/8"
[194 mm]
4"
[102 mm]
SK1621
154108
TOTAL DYNAMIC HEAD/FLOW
PER MINUTE
SEWAGE AND DEWATERING
Shut-off Head:
90
100
80
70
53 ft. (16.2m)
27.4
30.5
24.4
21.3
-
-
-
-
MODEL
60
50
40
30
20
10
5
Feet
-
-
16.5
28
37
42
15.2
18.3
12.2
6.1
9.1
3.0
-
-
62
140
106
159
43
Gal.
1.5
Meters
7010
Liters
163
-
-
12
81 ft. (24.7m)
-
-
-
-
45
22
32
39
42
43
43
121
83
148
159
43
Gal.
7009
LitersGal.
7008
Liters
-
-
-
-
16.7
27
36
107 ft. (32.6m)
7
63
26
102
136
43
46
46
46
46
46
174
163
174
174
174
174
46 174
15 40
35 41
25 33
434.6
7.6
10.7
163
163
163151
125
8322
163
155
43 163
46 174
46 174
46 174
20
30
40
50
60
10 15 20 25 30 35 40 45 50 555
20 40 60 80 100 120 140 160 180 200
0
METERS
FEET
PUMP PERFORMANCE CURVE
MODELS 7008/7009/7010
0
TOTAL DYNAMIC HEAD
FLOW PER MINUTE
U.S. GALLONS
LITERS
70
10
80
90
100
110
4
8
12
16
20
24
28
32
7010
7009
7008

5
© Copyright 2020 Zoeller®Co. All rights reserved.
MIN. "OFF" LEVEL
RUN
O.L.
MOTOR
(3)
BLUE RED
BLACK
GREEN
L1 L2
START
(1) (2)
YELLOW
RED
R
RELAY
(WHITE) (BLACK)
YELLOW
(BROWN)
BLUE
1
5
2
WHITE
CAPACITOR
START
WHITE
BLACK
BLACK
CAPACITOR
RUN
RUN
O.L.
MOTOR
(3)
BLUE RED
FLOAT
BLACK
GREEN
L1 L2
START
(1) (2)
YELLOW
RED
R
RELAY
(WHITE) (BLACK)
YELLOW
CAPACITOR
(BROWN)
BLUE
WHITE
1
5
2
BLACK
WHITE
CAPACITOR
START
RUN
BLACK
WHITE
BLACK
22" MAX.
5" MIN.
20 AMP SWITCH (WD & WH MODELS)
FOR YOUR PROTECTION, ALWAYS DISCONNECT THE PUMP FROM ITS POWER SOURCE BEFORE HANDLING. Single phase
automatic 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 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.
Pump Wiring Instructions
Installation and checking of electrical circuits and hardware should be performed by a qualied licensed electrician.
010415
AUTOMATIC
WIRING DIAGRAM
010443
NONAUTOMATIC
WIRING DIAGRAM
1 PH
FIGURE 4.
FIGURE 5.
Models WD & WH are fully automatic. A oat switch is included and factory wired in the pump circuit to provide automatic operation once the
oat switch is secured properly to the outlet pipe. 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”.
Determining Pumping Range
in Inches (1 inch - 2.5 cm)
Tether Length 5 10 15 20 22
Pumping Range 9 13.5 18 22 24
Use only as a guide. Due to weight of
cable, pumping range above horizontal
is not equal to pumping range below
horizontal.Rangesarebasedontestingin
nonturbulent conditions. Range may vary
duetowatertemperature andcordshape.
As tether length increases, so does the
variance of the pumping range.
Note: Failure to keep within proper tether limits may
prevent reliable switch operation.
Note: Cable must be mounted in horizontal position. SK2304
min. max.
SK305D
MOTOR
(3)
BLUE RED
BLACK
GREEN
L1 L2
(1) (2)
YELLOW
L3
WHITE
RED
NONAUTOMATIC
WIRING DIAGRAM
3 PH
006848

6
© Copyright 2020 Zoeller®Co. All rights reserved.
SK1691A
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.
Indoor Prepackaged System
FIGURE 2.
TO ALARM PANEL
24" X 1/4" STEEL
(VENT CONNECTION)
10" X 1/4" STEEL
CORD SEAL
INSPECTION PLATE
3" GROMMET SEAL
SWITCH CORD
ALARM FLOAT
BASIN COVER
LIFTING BOLT
16" X 1/4" STEEL
5/16" 304 STAINLESS STEEL
PUMP PLATE
PUMP POWER CORD
SILENCE
INPUT1
POWER
ON
(FIELD INSTALLED)
ALARM
4" RUBBER INLET
CAST IRON ADAPTERS
OFF
24" NOMINAL
TO ALARM PANEL BALL VALVE
(FIELD INSTALLED)
GALVANIZED PIPE
1-1/4" X 32"
GALVANIZED PIPE
1-1/4" X 12"
GRINDER PUMP
SINGLE PHASE,2HP
1-1/4" GROMMET SEAL
(FIELD INSTALLED)
CAST IRON CHECK VALVE
1-1/4" FEMALE NPT
AUTOMATIC
36"
1-1/4" PVC SLIP X SLIP
HIGH WATER ALARM
(FIELD INSTALLED)
PIPE SEAL
SK1691B

7
© Copyright 2020 Zoeller®Co. All rights reserved.
Indoor Prepackaged System Installation Instructions
This set of instructions is for factory prepackaged indoor systems only. If your system is a eld assembled indoor system,
use these instructions as a guideline. If your system is an outdoor system then go to the next section in this manual that covers outdoor systems.
1. Indoor grinder pump systems are for installing at grade in an indoor
application only. If you will be installing this system outside next
to the residence then you will need an outdoor system. DO NOT
INSTALL THE INDOOR SYSTEM OUTDOORS.
2. Review the drawing in Fig. 2 on page 6 and the actual system to
become familiar with the components in the grinder pump system.
Reviewwhere the unitwill be installed. Determinewhere the power
feed, inlet pipe, discharge pipe and vent will be located.
3. Remove the unit from the packing. Indoor prepackaged systems
are preassembled at the Zoeller Company and require a minimum
of eld assembly work. All work inside the basin can be performed
via the inspection port. There should be no reason to remove the
cover from the basin. Pump and oat switches are already set
inside the basin.
4. Remove the inspection plate from the cover. All oats are set and
tethered for proper operation from the factory. 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. Float switches
are tied in place for shipping purposes. Cut the cable tie around
each oat switch bulb or the unit will not operate properly.
5. Dig a hole for the basin. The basin should be located in a very low
trafc area within 15’ of the power disconnect. 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. Also reference the
basin installation instructions included with the unit.
6. The 4” inlet hub should be located between the top lip of the basin
and the alarm oat “on” level with a minimum distance of 10 inches
between the oor of the basin and hub. Determine the location of
the inlet hub based upon your inlet pipe arrangement. The inlet
hub 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 4”
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. Set the basin in the hole and connect the 4” inlet pipe to the inlet
hub using the rubber insert. If using a cast iron hub, the 4” inlet pipe
will need to be caulked or gasketed to the hub. Backll around the
basin with 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.
8. Connect the discharge pipe, valves and vent according to all
applicable National, State and Local plumbing codes.
9. Mount the alarm panel on the wall above the system. Connect the
alarm oat switch and pump power cord.
10. Clean any debris out of the basin. Fill the basin with water and
check the system for proper operation.
11. Record system start-up data for future reference.
12. Seal and secure the inspection plate to the lid using the proper
bolts and sealant. Pouring concrete around the system can now
be completed.

8
© Copyright 2020 Zoeller®Co. All rights reserved.
Typical Outdoor Grinder Pumping System Installation
All installations must comply with all applicable electrical and plumbing codes, including but not limited to the National Electri-
cal Code, local, regional and/or state plumbing codes, etc.
FIGURE 3.
R
LOUISVILLE, KY
SILENCE
INPUT1
POWER
4" PIPE SEAL
(FIELD INSTALLED)
2" PIPE SEAL
(FIELD INSTALLED)
24" MIN.
FIBERGLASS AFD
1.25-2" Z-RAIL
2" CAST IRON CHECK VALVE
3/4" GUIDE RAILS
2" SCH. 80 BALL VALVE
2" FLEX BOOT FITTING
(LOCATION VARIES
WITH BASIN DEPTH)
FLOAT TREE ASSEMBLY
2HP GRINDER PUMP
2" PVC SCH. 80 PLBG.
1/8" 302 STAINLESS STEEL
LIFTING CABLE
ALARM
ON
OFF
SOLID FIBERGLASS COVER
HIGH WATER ALARM
OR SIMPLEX
CONTROL PANEL
(FIELD INSTALLED)
ALARM FLOAT SWITCH MUST OPERATE OFF LOW
VOLTAGE TO BE USED WITH QWIK BOX.
SK3110
FOAM TAPE
UL LISTED
EPOXY SEALER
#10-2350 POTTING KIT
APPLIES TO INSIDE AND
OUTSIDE INSTALLATIONS
CONDUIT 1
WIRES OR
PUMP CABLES
1/4" TO 1/2"
(25 mm) (6 mm TO 12 mm)
SK1661
LOCATION VARIES WITH BASIN DEPTH

9
© Copyright 2020 Zoeller®Co. All rights reserved.
Outdoor Prepackaged System Installation Instructions
1. Review the drawing in Fig. 3 on page 8 and the actual system to
becomefamiliarwiththecomponentsinthepackagedgrinderpump
system. Review where the unit will be installed. Determine where
the power feed, inlet pipe, and discharge pipe will be located.
2. Remove the unit from packing. Prepackaged outdoor systems are
preassembled at the Zoeller Company and require a minimum of
eld assembly work. Float switches are set and tethered for proper
operation from the Factory. Systems using an automatic unit, WD
or WH series, have an integral “on/off” oat switch. See Fig. 4
on page 5 for adjustment instructions. The alarm switch should
be located 3” above the pump “on” level. Three oat systems
used with a control panel are placed at 27”, 24”, and 15” from the
bottom of the basin. Four oat systems used with a control panel
are placed at 33”, 27”, 24”, and 15” from the bottom of the basin.
If the invert location is at or below the level of the oat switches,
contact the factory.
3. Float switches are tied in place for shipping purposes on all model
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. 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.
5. The location of the inlet hub is determined by the depth of the inlet
pipe. The inlet hub 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 4” 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.
6. The bottom of the excavation can now be properly backlled,
compacted and leveled. Set basin in hole. 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.) Connect the 4” inlet pipe to the
inlet hub.
7. 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.
Careshouldbeusedto avoid damaging componentsorleavingvoids
when back lling. Refer to Basin installation reference guide on
more specic requirements.
8. PVC or HDPE discharge piping is connected to the 2” threaded
tting located in the basin sidewall. Support discharge piping with
sufcient backll.
9. Connectliftcabletotop of pump. Lower the pumpintobasinensuring
the discharge pipe bracket slides into the disconnect tting.
10. Note: Thegrinder basin isasewageholdingtank. Vent connection should
be installed in accordance with all national, state and local plumbing
codes.
11. Dig a trenchfortheelectricalconduit. Theconduit should be located
below the frost line. Follow all applicable electrical codes.
12. If using a junction box, connect the electrical conduit and wiring
accordingtoinstructionsincludedinthismanualand wiring diagram
in box. If a potting kit is provided with the junction box, follow the
instructions for sealing the conduit connection to the junction box.
If a potting kit is not provided, the conduit connection to the junction
box must be sealed.
13. Mount the control panel within sight of the system. Connect
oat switches and pump cords according to the “Pump Wiring
Instructions” found later 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. Test system for leaks and proper pump operation.
17. Record system start up data for future reference.
This set of instructions is for factory prepackaged outdoor grinder systems only. If this is a eld assembled outdoor system
you can use these instructions as a guideline. If this is an indoor system then go back to pages 6-7 in this manual that covers indoor systems.

10
© Copyright 2020 Zoeller®Co. All rights reserved.
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 designed for intermittent duty sanitary sewage
applications. If pump is used to dewater areas or pump liquids with
heavy or abrasive materials, the warranty will be voided.
NAMEPLATE DATA
The nameplate, located on the top of pump, indicates specic information
about the construction of the pump. The model number and date code
information should be recorded on the front page in the “Owner’s
Information” section of this manual.
SHORT TERM STORAGE
Do not install pump until permanent electrical power is available and
system is operational. When not in use, the pump should be stored,
and the following is advised:
• Store pumpinsidewhenever possibleorcoverwith sometypeof protective
covering.
• 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
seals 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.
• Pump, oat switches, electrical cables and junction box are dry and
properly installed.
• Electrical boxes dry, sealed and securely installed.
• Floats positioned properly.
• Discharge valves open.
• 3/16” vent hole drilled in pipe between check valve and pump.
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 and junction box are properly sealed.
• After installing the pump into the containment area, 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
inthe “Owner’s Information” section onpage 1 of this manualfor future
reference.
ADJUSTMENT PROCEDURE
Pumps: No adjustments are required.
Floats: Refer to Fig. 4 on page 5 or to the panel wiring schematic for
desired location of each oat switch setting.
Valves: Discharge valves should be placed in the fully open position.
Systems should not be operated for extended periods of time
with the discharge valves partially closed due to damaging
the valve.
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.
With the pump in the pit, it should be operated for ve minutes
once every three months. 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/actuatorsupplierforinformationconcerning
these systems components.
Operation

11
© Copyright 2020 Zoeller®Co. All rights reserved.
Cutter Maintenance
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
thevertical position tomake certainthe endplay has been removed.
Check and record the clearance between the cutter and disc with
a feeler gage. The correct running clearance is between 0.004" and
0.008".
3. Withpumpinhorizontal position, heatthehex head boltinthe 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
machinedfromthecutterdisc(step6above). Finalrunning clearance
must be between 0.004” and 0.008”. 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 with pump in vertical
position to remove end play. Clearance must be between 0.004" and
0.008" 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.
FIGURE 6.
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 0.004" and 0.008" on these parts.

12
© Copyright 2020 Zoeller®Co. All rights reserved.
General Maintenance
Repair and service should be performed by a Zoeller
Pump Company Authorized Service Station 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
ventedandtested.Anypersonentering a basin shouldbewearing
aharnesswithsafetyropeextendingtothesurfacesothattheycan
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.
Unit must be cleaned and disinfected, 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.
Wiring and grounding must be in accordance
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 6 months:
• Check for proper and unobstructed oat operation.
• Listen for proper check valve operation.
Every 5 years or 10,000 hours of operation:
• Remove pump, inspect and service using a Zoeller rebuild kit.
• Flush and clean basin.
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.
Condition
A. Pump will not start or run.
B. Motor overheats and trips on overload.
C. Pump will not shut off.
D. Pump operates but delivers little or no water.
E. Pump starts and stops too often.
F. Large red ashing light comes on at control box.
G. Grease and solids accumulate in pit around pump.
Common Causes
Blown panel or circuit breaker fuse, low voltage, thermal overload open, de-
fective capacitor circuit, cutter or impeller clogged, oat switch held down or
defective, incorrect wiring in control panel, water in cap assembly.
Incorrect voltage, impeller 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.
Air lock, debris under oat assembly, defective switch, incoming sewage
exceeds capacity of pump.
Intake clogged with grease or sludge, pump air locked (clear vent
hole), low or incorrect voltage, clogged discharge line, operating near
shut-off head.
Check valve stuck open or defective. Sump pit too small to handle incoming
sewage. Level control out of adjustment. Thermal overload tripping.
High water in pit. Check pump for clogging, or overload trip. On single phase
pumps, check the start capacitor in the control panel. See “A” and “D” above.
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.
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 web site:
zoellerengineered.com