Stenner Pumps M128 Series Manual

TO BE INSTALLED AND MAINTAINED BY PROPERLY TRAINED
PROFESSIONAL INSTALLER ONLY. READ MANUAL & LABELS
FOR ALL SAFETY INFORMATION & INSTRUCTIONS.
WARNING
M128 SERIES
INSTALLATION AND MAINTENANCE MANUAL
PERISTALTIC METERING PUMPS SINCE 1957

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TABLE OF CONTENTS
WARRANTY AND SERVICE POLICY............................................ 3
SAFETY INFORMATION .................. cover, 4-6, 9, 11, 14-19, 21-22, 27
OUTPUT AND SIZING ............................................................. 6
MATERIALS OF CONSTRUCTION .............................................. 7
ACCESSORY CHECKLIST ........................................................ 8
INSTALLATION ................................................................. 9-18
TROUBLESHOOTING........................................................ 19-21
TUBE REPLACEMENT ...................................................... 22-26
CLEANING THE POINT OF INJECTION ................................. 27-29
PARTS .......................................................................... 30-31
IM128 031518

USA and Canada 800.683.2378, International 904.641.1666
WARRANTY AND CUSTOMER SERVICE
LIMITED WARRANTY
Stenner Pump Company will for a period of one (1) year from the date of purchase (proof
of purchase required) repair or replace – at our option – all defective parts. Stenner is not
responsible for any removal or installation costs. Pump tube assemblies and rubber
components are considered perishable and are not covered in this warranty. Pump tube
will be replaced each time a pump is in for service, unless otherwise specified. The cost of
the pump tube replacement will be the responsibility of the customer. Stenner will incur
shipping costs for warranty products shipped from our factory in Jacksonville, Florida. Any
tampering with major components, chemical damage, faulty wiring, weather conditions,
water damage, power surges, or products not used with reasonable care and maintained in
accordance with the instructions will void the warranty. Stenner limits its liability solely to
the cost of the original product. We make no other warranty expressed or implied.
RETURNS
Stenner offers a 30-day return policy on factory direct purchases. Except as otherwise
provided, no merchandise will be accepted for return after 30 days from purchase. To
return merchandise at any time, call Stenner at 800.683.2378 for a Return Merchandise
Authorization (RMA) number. A 15% re-stocking fee will be applied. Include a copy of your
invoice or packing slip with your return.
DAMAGED OR LOST SHIPMENTS
All truck shipments: Check your order immediately upon arrival. All damage must be noted
on the delivery receipt. Call Stenner Customer Service at 800.683.2378 for all shortages
and damages within seven (7) days of receipt.
SERVICE & REPAIRS
Before returning a pump for warranty or repair, remove chemical from pump tube by
running water through the tube, and then run the pump dry. Following expiration of the
warranty period, Stenner Pump Company will clean and overhaul any Stenner metering
pump for a minimum labor charge plus necessary replacement parts and shipping. All
metering pumps received for overhaul will be restored to their original condition. The
customer will be charged for missing parts unless specific instructions are given. To return
merchandise for repair, call Stenner at 800.683.2378 or 904.641.1666 for a Return
Merchandise Authorization (RMA) number.
DISCLAIMER
The information contained in this manual is not intended for specific application purposes.
Stenner Pump Company reserves the right to make changes to prices, products, and
specifications at any time without prior notice.
TRADEMARKS
QuickPro®is a registered trademark of the Stenner Pump Company.
Santoprene®is a registered trademark of Exxon Mobil Corporation.
AquaShield™is a trademark of Houghton International.
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SAFETY INFORMATION
IMPORTANT SAFETY INSTRUCTIONS
When installing and using this electrical equipment, basic safety precautions
should always be followed, including the following:
READ AND FOLLOW ALL INSTRUCTIONS
Warns about hazards that CAN cause death, serious personal
injury, or property damage if ignored.
ELECTRIC SHOCK HAZARD
ELECTRIC SHOCK HAZARD
Pump supplied with grounding power cord and attached plug. To reduce risk of
electrical shock, connect only to a properly grounded, grounding type receptacle.
Install only on a circuit protected by a Ground-Fault Circuit-Interrupter (GFCI).
RISQUE DE CHOC ELECTRIQUE
Cette pompe est équipée d’une fiche de mise à terre. Pour réduire le risque de choc
électrique, s’assurer que la fiche est bien raccordée à une prise de courant avec une
connexion de mise à terre. Installer seulement sur un circuit proteger par un
interrupteur proteger par une mise à la terre.
DO NOT alter the power cord or plug end.
DO NOT use receptacle adapters.
DO NOT use pump with a damaged or altered power cord or plug. Contact the
factory or an authorized service facility for repair.
HAZARDOUS VOLTAGE
DISCONNECT power cord before removing motor cover for service. Electrical service
by trained personnel only.
EXPLOSION HAZARD
This equipment IS NOT explosion proof. DO NOT install or operate in an
explosive environment.
RISK OF CHEMICAL EXPOSURE
Potential for chemical burns, fire, explosion, personal injury, or property damage. To
reduce risk of exposure, the use of proper personal protective equipment is mandatory.
RISK OF FIRE HAZARD
DO NOT install or operate on any flammable surface.
RISK OF CHEMICAL OVERDOSE
To reduce risk, follow proper installation methods and recommendations. Check your
local codes for additional guidelines.
To reduce the risk of injury, do not permit children to use this
product. This appliance is not to be used by persons with reduced physical, sensory
or mental capabilities, or lack of experience or knowledge, unless they have been
given supervision or instruction.

USA and Canada 800.683.2378, International 904.641.1666 5
SAFETY INFORMATION continued
Warns about hazards that WILL or CAN cause minor personal
injury or property damage if ignored.
PLUMBING
Chemical feed pump installation must always adhere to your local plumbing codes
and requirements. Be sure installation does not constitute a cross connection. Check
local plumbing codes for guidelines.
NOTICE: Indicates special instructions or general mandatory action.
This metering pump is portable and designed to be removable from the plumbing
system without damage to the connections.
Before installing or servicing the pump, read the pump manual for all safety
information and complete instructions. The pump is designed for installation and
service by properly trained personnel.
Installation and product must adhere to all regulatory and compliance codes
applicable to the area.
Use the M128 only with a dry contact, reed switch style water meter.
DO NOT connect the M128 input signal cord to any AC voltage supply.
DO NOT connect the M128 input signal cord to any hall effect, 4-20mA or
voltage carrying signal source.
This metering pump and its components have been tested for use with the following
chemicals; Sodium Hypochlorite (10-15%), Muriatic Acid (20-22 Baume, 31.5%
Hcl), and Soda Ash.
Cette a pompe de dosage et ses composants ont été testés pour utilisation avec les
produits chimiques suivants; Hypochlorite de Sodium (solution de 10-15%); Acide
Muriatique (20-22 Baume, 31.5% Hcl); Cendre de Soude.
This is the safety alert symbol. When displayed in this manual or on the
equipment, look for one of the following signal words alerting you to the
potential for personal injury or property damage.
Electrical installation should adhere to all national and local codes. Consult a
licensed professional for assistance with proper electrical installation.
Suitable for indoor and outdoor use.
Convient pour usage intérieur et extérieur.
Pump uses a class 2 switching power supply.
SAVE THESE INSTRUCTIONS

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OUTPUT AND SIZING CHARTS
NOTICE: The information within these charts is solely intended for use as a guide.The output data is an approximation based
on pumping water under a controlled testing environment. Many variables can affect the output of the pump. Stenner Pump
Company recommends that all metering pumps undergo field calibration by means of analytical testing to confirm their outputs.
Approximate Maximum Output @ 50/60Hz
Approximate Maximum Output @ 50/60Hz
ALTERNATIVE SIZING – M07 Model using 1 pulse/gallon meter
Dosage Dosage Ratio Max. System Water Flow Pulse Setting
oz/gal gal/min
1.0 1:128 3.5 1
0.50 1:256 7.0 2
0.25 1:512 14.0 4
NOTE: 1 oz = 29.57 ml; 1 gallon = 3.78 liters. Contact factory for assistance with sizing.
NOTE: Injection check valve included with pumps rated 100 psi (6.9 bar) maximum.
FLOW RATE OUTPUT CHART – 25 psi (1.7 bar) maximum
Model Item Number Pump Tube Ounces Gallons Gallons Milliliters Liters Liters
Prefix per Minute per Hour per Day per Minute per Hour per Day
M05 M05 5 8.4 3.9 95 249.7 14.9 359.6
Maximum system water flow for 1:128 dosing is 8.4 gallons/minute or 31.8 liters/minute.
FLOW RATE OUTPUT CHART – 100 psi (6.9 bar) maximum
Model Item Number Pump Tube Ounces Gallons Gallons Milliliters Liters Liters
Prefix per Minute per Hour per Day per Minute per Hour per Day
M07 M07 7 3.5 1.6 40 105 6.3 151.4
Maximum system water flow for 1:128 dosing is 3.5 gallons/minute or 13.2 liters/minute.

USA and Canada 800.683.2378, International 904.641.1666 7
MATERIALS OF CONSTRUCTION
All Housings
Polycarbonate
Pump Tube & Check Valve Duckbill
Santoprene®*, FDA approved
Suction/Discharge Tubing & Ferrules
Polyethylene, FDA approved
Tube and Injection Fittings
PVC or Polypropylene, NSF listed
Connecting Nuts
PVC, NSF listed
Suction Line Strainer and Cap
PVC or Polypropylene, NSF listed, with ceramic weight
Fasteners
Stainless Steel
Pump Head Latches
Polypropylene

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ACCESSORY CHECKLIST
CONTENTS
3 Connecting Nuts 1/4"
3 Ferrules 1/4"
1 Injection Fitting 25 psi (1.7 bar) maximum
OR 1 Injection Check Valve 100 psi (6.9 bar) maximum
1 Weighted Suction Line Strainer 1/4"
1 20' Roll of Suction/Discharge Tubing 1/4" White
1 Additional Pump Tube
2 Additional Latches
1 Mounting Bracket
1 Manual

USA and Canada 800.683.2378, International 904.641.1666 9
INSTALLATION
ADDITIONAL SAFETY INSTRUCTIONS
NOTICE: Indicates special instructions or general mandatory action.
Read all safety hazards before installing or servicing the pump. The pump is
designed for installation and service by properly trained personnel.
Use all required personal protective equipment when working on or near a chemical
metering pump.
Install the pump so that it is in compliance with all national and local plumbing
and electrical codes.
Use the proper product to treat potable water systems, use only chemicals listed or
approved for use.
Install the pump to work in conjunction with well pump or system controls.
Inspect tube frequently for leakage, deterioration, or wear. Schedule a regular pump
tube maintenance change to prevent chemical damage to pump and/or spillage.
Mount pump vertically and use spill recovery to run chemical back to tank in the
event of tube failure.
Pump is not recommended for installation in areas where leakage can cause
personal injury or property damage.

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INSTALLATION – OPERATION AND CONTROLS
The M128 Series pump is designed to automatically meter solution proportional to flow at
a rate of 1 ounce of solution to 128 ounces of process water. The pump is pre-set at the
factory to work with a specific tube size; the tube size can’t be changed. The M05 model is
pre-set with a #5 tube and the M07 model is pre-set with a #7 tube.
The pump can be adjusted to work with a dry contact water meter with pulse rates of 1 PPG,
2 PPG, 4 PPG, 10 PPG, or 1 PPL. The 10 PPG pulse setting is only for the M07 model
which uses a #7 tube.
PULSE DIAL
To adjust the pulse rate, always start at the STBY position, then turn the pulse dial
counterclockwise to the desired setting. The line on the dial will align with the line for the
selected pulse rate on the label and the dial will “click” into position. When the pulse dial is
put in the standby position (STBY), the pump will not run when it receives a dry contact from
the water meter. However, the signal repeater will continue to function in the STBY mode.
PRIME BUTTON
Fully depress the prime button to run the pump to prime the pump or replace the tube.
When the prime button is released, the pump returns to automatic operation based on a
dry contact input signal from a water meter or controller. If the prime button is held
continuously for more than a minute, the pump will go into a safety shutdown. Releasing
the prime button resets the safety feature.
Model M07 Pulse Rates
The 10 PPG setting is for #7 tube only.
Signal Input
Power Input
Prime Button
Pulse Dial
ModelM05 Pulse Rates

USA and Canada 800.683.2378, International 904.641.1666 11
INSTALLATION continued
MOUNT PUMP
Pump must be mounted vertically with pump head pointed downward.
Select a dry location (to avoid water intrusion and pump damage) above the
solution tank. Best recommended location is above the solution tank in a
vertical position with the pump head pointed downward and the spill recovery
(see page 13) in place to reduce the risk and severity of damage.
To prevent pump damage in the event of a pump tube leak, never mount the
pump vertically with the pump head up.
To avoid chemical damage from fumes, DO NOT mount pump directly over an
open solution tank. Keep tank covered.
Avoid flooded suction or pump mounted lower than the solution container. Draw
solution from the top of the tank. Pump can run dry without damage. If pump is
installed with a flooded suction, a shut-off valve or other device must be
provided to stop flow to pump during service.
1. Use the mounting bracket as a template
to drill pilot holes in mounting location.
2. Secure bracket with fasteners or wall
anchors. Slide pump into bracket.
Provide 8" clearance to allow
pump removal.
To prevent damage, verify with a volt
meter that the receptacle voltage
corresponds with the pump voltage.
Wall Mounting Bracket
Pump Head

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Weighted Suction Line Strainer
Spill Recovery
3"
INSTALLATION continued
SPILL RECOVERY
In case of tube rupture, the solution drains back into the tank, preventing spillage onto
ground or floor and stops the solution from collecting in the tube housing.
Tube drains solution
back to tank.
Punch out one of two hole plugs using
a 7/32" punch (alternatively, you can
use a 7/32" drill).
Use section of 1/4" suction/discharge
tubing and insert in hole.

USA and Canada 800.683.2378, International 904.641.1666 13
INSTALLATION DIAGRAM
Pump Input
Signal Cable
Injection Check Valve
or Injection Fitting
Discharge Line
Solution Tank
Plug into Grounded
Power Outlet (Ground-
Fault Circuit-Interrupter
GFCI recommended)
Water
Meter
Output
Cable
Suction Line
Shut-Off Valve
Shut-Off Valve
Duckbill
Injection
Fitting
25 psi max.
Injection
Check Valve
100 psi max.
Flow direction of solution
Disassembled View
Wall Mounting Bracket
(requires 2 screws)
Water Meter
Spill Recovery
Green
White
Black
Pump Input
Signal Cable
Water Meter
Output Cable
Dry Contact
for Auxillary
Equipment
(optional)
Red

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INSTALLATION continued
Risk of equipment malfunction or damage.
DO NOT connect input signal cord to any AC electrical supply.
NOTICE: Indicates special instructions or general mandatory action.
Use the M128 only with a dry contact, reed switch style water meter.
DO NOT connect the M128 input signal cord to any AC voltage supply.
DO NOT connect the M128 input signal cord to any hall effect, 4-20mA or
voltage carrying signal source.
1. Connect the pump signal cord to the dry contact water meter by attaching the RED
and BLACK wires to the dry contact output water meter or relay switch.
2. The pump is equipped with a dry contact output feature. The pump can provide a dry
contact output to auxiliary equipment by attaching the GREEN and WHITE wires to
the auxiliary equipment requiring a dry contact input. Contact is rated for 5 VDC at
10mA max.
3. Plug the pump power cord into the receptacle.

USA and Canada 800.683.2378, International 904.641.1666 15
INSTALLATION continued
INSTALL SUCTION LINE TO PUMP HEAD
1. Uncoil the suction/discharge line. Use outside of solution tank as a guide to cut
proper length of suction line ensuring it will be 2-3" above the bottom of solution tank.
Allow sufficient slack to avoid kinks and stress cracks. Always make a clean
square cut to assure that the suction line is burr free. Normal maintenance
requires trimming.
Suction lines that extend to the bottom of the tank can result in debris pickup
leading to clogged injectors and possible tube failure.
2. Make connections by sliding the line(s) through connecting nut and ferrule and finger
tighten to the corresponding tube fittings.
3. Finger tighten nut to the threaded tube fitting while holding the tube fitting.
Over tightening the ferrule and nut with a wrench may result in damaged fittings,
crushed ferrules, and air pick up.
DO NOT use thread seal tape on pump tube connections or tools to
tighten connections.
DO NOT use thread
seal tape on pump
tube threads.
DO NOT
use pliers.
Suction Line
Finger tighten 1/4" nut
Discharge Line
Connecting Nut
NOTE: Beveled ends of ferrules
face pump. Suction line should
bottom into all fittings.
Ferrule

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INSTALLATION continued
INSTALL SUCTION WEIGHT TO SUCTION LINE
1. Drill a hole into the bung cap or solution tank lid. Slide the tubing through and secure
the weighted strainer to the line.
2. To attach the strainer, push approximately 3.5" of suction line through the cap on the
strainer body. Pull tubing to make sure it is secure.
3. Suspend slightly above tank bottom to reduce the chance of sediment pickup.
DO NOT mix chemicals in the solution container. Follow recommended mixing
procedures according to the manufacturer.
DO NOT operate pump unless chemical is completely in solution. Turn pump off
when replenishing solution.
Suction Line
3.5"
(9 cm)
Weighted
Suction Line
Strainer
3"

USA and Canada 800.683.2378, International 904.641.1666 17
INSTALLATION continued
INSTALL DISCHARGE LINE TO PUMP HEAD AND INJECTION POINT
1. Make a secure finger tight connection on the discharge fitting of the pump head as
instructed in Install Suction Line instructions.
DO NOT use thread seal tape on pump tube connections or tools to
tighten connections.
HAZARDOUS PRESSURE: Shut off water or circulation system
and bleed off any system pressure.
Locate a point of injection beyond all pumps and filters or as determined by
the application.
2. A 1/4" or 1/2" Female NPT (FNPT) connection is required for installing the injection
fitting. If there is no FNPT fitting available, provide one by either tapping the pipe or
installing FNPT pipe tee fitting.
3. Wrap the Male NPT (MNPT) end of injection fitting with 2 or 3 turns of thread seal
tape. If necessary, trim the injection fitting quill as required to inject product directly
into flow of water.
DO NOT use thread seal
tape on pump
tube threads.
DO NOT
use pliers.
Discharge Line
Water Meter
1/4" or 1/2" FNPT
Reduction Bushing
if needed
Injection Fitting or
Injection Check Valve
Shut-Off Valve
Point of Injection
Shut-Off Valve

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INSTALLATION continued
4.HandtightentheinjectionfittingintotheFNPTfitting.
25psiMax.Model(includesinjectionfitting)
a.Install connectingnutandferrule tothepump discharge line.Insertdischarge
lineintoinjectionfittinguntil it reachesbaseoffitting.
b.Fingertightenconnectingnuttofitting.
100psiMax.Model(includesinjectioncheckvalve)
a.Priortoconnection,testinjectioncheckvalveandNPTthreadsforleaksby
pressurizingsystem. Ifnecessary,tightenanadditional 1/4turn.
b.Install connectingnutandferrule tothepump discharge line.Insertdischarge
lineintocheckvalvebodyuntil it reachesbaseofbody.
c.Fingertightenconnectingnuttofitting.
5. Depressand hold the prime buttonand allow pump tofully prime. The prime buttonwill
runthepumpandwhenreleasedthepumpwillreturntoautomaticmode.
6.Re-pressurizesystem, observechemical flowasactuatedbysystem andcheckall
connectionsforleaks.
7.Aftersuitable amountofdosingtime,perform testsfordesiredchemical readings.If
necessary,finetunedosinglevels byadjustingsolutionstrength.
Theinjectionpointandfittingrequireperiodicmaintenancetocleanany
depositsorbuildup.Toallowquickaccesstothepointofinjection,Stenner
recommendstheinstallationofshut-offvalves.

USA and Canada 800.683.2378, International 904.641.1666 19
TROUBLESHOOTING – MOTOR
HAZARDOUS VOLTAGE:
DISCONNECT power cord before removing motor cover for service. Electrical service
should be performed by trained personnel only.
PROBLEM POSSIBLE CAUSE SOLUTION
Pump does not respond to Failed reed switch on water meter Disconnect signal wire and briefly touch the
water meter signal two leads from the pump together. The pump
Poor connection between pump should run. If it runs, check the meter, the
and water meter connection, and the reed switch. If the pump
doesn’t run, contact factory.
Pump will not run with Prime switch was depressed Release prime switch to return pump to
prime switch depressed continuously for more than a minute automatic mode or depress prime switch
again to continue priming
Pump is not working in Worn motor brushes Replace DC gear motor
automatic or prime mode Failed DC motor
Over temperature or over current The pump incorporates overcurrent and
overtemperature protection that will
automatically reset. Allow pump to cool and
try re-starting the pump.
Pump is not working and Locked rotor Examine roller assembly to ensure that it is
there is an audible alert not locked up.If roller assembly is free,
replace DC gear motor.

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TROUBLESHOOTING – PUMP HEAD
PROBLEM POSSIBLE CAUSE SOLUTION
Components cracking Chemical attack Check chemical compatibility
Pump head leaking Pump tube rupture Replace pump tube, ferrules; center tube
No pump output, Depleted solution tank Replenish solution
pump head rotates Pump suction line weight is Maintain suction line 2-3" above
above solution bottom of tank
Leak in the suction line Inspect or replace suction line
Ferrules installed incorrectly, Replace ferrules
missing or damaged
Injection point is clogged Inspect and clean injection point
Clogged suction and/or discharge Clean and/or replace as needed
line and/or injection check valve
Life of pump tube exhausted Replace pump tube, ferrules; center tube
Suction line is flush with Pull suction line approximately 1" from
the nose of the weighted strainer bottom of strainer, cut bottom of suction
line at an angle
Low pump output, Life of pump tube exhausted Replace pump tube, ferrules; center tube
pump head rotates Rollers worn or broken Replace roller assembly
Injection point is restricted Inspect and clean injection point
Incorrect tube size Replace tube with correct size
High system back pressure Verify system pressure against tube psi,
replace tube if needed
No pump output, Stripped roller assembly Replace roller assembly
pump head doesn’t rotate Motor problem Refer to motor section
Pump output high Incorrect tube size or setting Replace tube with correct size or
adjust settings
Roller assembly broken Replace roller assembly