Zoeller 7020 Owner's Manual
Zoeller 7020 Owner's Manual

Zoeller 7020 Owner's Manual

Progressing cavity grinder pumps 50/60hz

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NOTICE TO INSTALLER: Instructions must remain with installation.
Product information presented
here reflects conditions at time
of publication. Consult factory
regarding discrepancies or
inconsistencies.
*
* NOTE: Applicable to 50 Hz units only.
MODELS 7020 & 7021 PROGRESSING CAVITY GRINDER PUMPS
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 progressing cavity grinder
pumps. This Zoeller pump will provide years of trouble-free service
when installed according to the manufacturer's recommendations.
This manual incorporates the installation, operation, mainten-
ance, and service instructions into one document to aid in the ownership of
a Zoeller submersible wastewater product. Please read and review this

Table of Contents

Safety Instructions ....................................................................... 1
Limited Warranty, Checklist and Application ..........................2-3
General Information ..................................................................... 4
Pump Wiring Instructions ............................................................ 4
Typical Outdoor Prepackaged System ....................................5-6
Installation Instructions ............................................................... 6
Operation Instructions ..............................................................6-7
Maintenance .................................................................................. 7
Service Checklist .......................................................................... 8
Owner's Information
Model Number: ______________ Date Code: _______________
 Simplex
 Packaged System
Job Name: ____________________________________________
Distributor: ____________________________________________
Date of Purchase: _________ Zoeller S/O No.: ______________
Contractor: ____________________________________________
Date of Installation: ____________________________________
System Readings During Start-up: Voltage _____ Amps ______
MAIL TO: P.O. BOX 16347 • Louisville, KY 40256-0347
SHIP TO: 3649 Cane Run Road • Louisville, KY 40211-1961
(502) 778-2731 • 1 (800) 928-PUMP • FAX (502) 774-3624
OWNER'S MANUAL
 Duplex
 Field Assembled System
© Copyright 2017 Zoeller
50/60Hz
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. Reference ZM2637 and ZM2638
for replacement parts on 7020 and 7021 Series Progressing Cavity
Grinder Pumps respectively. Should further assistance be necessary
please call our Product Support Department at 1-800-928-PUMP (7867)
or +1-502-778-2731.

Safety Instructions

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
CAUTION
property damage.
Warns of electrical shock hazards that can cause serious
personal injury, death or major property damage.
Identifies 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.
REFER TO WARRANTY ON PAGE 2.
Co. All rights reserved.
®
1
Visit our web site:
zoellerengineered.com
**
** NOTE: Applicable to 60 Hz units only.
ZM2607_Ec
1117
Supersedes
0117

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Summary of Contents for Zoeller 7020

  • Page 1: Table Of Contents

    Reference ZM2637 and ZM2638 design has been incorporated into this line of progressing cavity grinder for replacement parts on 7020 and 7021 Series Progressing Cavity pumps. This Zoeller pump will provide years of trouble-free service Grinder Pumps respectively.
  • Page 2: Limited Warranty, Checklist And Application

    “National Electrical Codes” and all local codes control switches. Repair and service, other than cutter assembly maintenance, and ordinances. should be performed by a Zoeller Authorized Service & Warranty Center or Customer Care Center. 5. Installation of electrical hardware and checking of control panels and circuits should be performed by a qualified licensed electrician.
  • Page 3 Applications 1. Zoeller Progressing Cavity Grinder Pumps are designed for grinding 3. The 7020 and 7021 can be installed in a Prepackaged Job Ready System and pumping sanitary sewage from submersible lift stations. The pump or may be used in a Field Assembled basin package. Page 5 shows is intended to grind and pump reasonable quantities of items normally a couple of the Prepackaged Systems.
  • Page 4: General Information

    (see page 7). 3. All electrical connections including pump to control box and power 2. The cutter mechanism on the model 7020 & 7021 is single directional. supply to control panels must comply with the applicable local codes.
  • Page 5: Typical Outdoor Prepackaged System

    COATED DUCTILE IRON SK2540 SK3019 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. © Copyright 2017 Zoeller Co. All rights reserved. ®...
  • Page 6: Installation Instructions

    Attach the hub to the side of the basin using the sealant and hardware provided. Operation GENERAL Zoeller pumps are lubricated and tested at the factory prior to shipment and require NAMEPLATE DATA minimum pre-start-up maintenance. The nameplate, located on the top of the pump, indicates specific information about the construction of the pump.
  • Page 7: Maintenance

    Grind the Cutter and Disc seen here to a 32 microfinish. Surfaces must be flat to within 0.025 mm (0.001") T.I.R. Gap must be between 0.178 mm (0.007") and 0.305 mm (0.012") on these parts. © Copyright 2017 Zoeller Co. All rights reserved. ®...
  • Page 8: Service Checklist

    NOTE: for CE-rated pumps only. We, Zoeller, declare under our sole responsibility that the model 7021 to which this declaration relates, are in conformity with the Council Directives on the approximation of the laws of the EC Member States relating to:...

This manual is also suitable for:

7021

Table of Contents