Stenner Pumps E20MH Manual

PERISTALTIC METERING PUMPS SINCE 1957
TO BE INSTALLED AND MAINTAINED BY PROPERLY TRAINED
PROFESSIONAL INSTALLER ONLY. READ MANUAL & LABELS
FOR ALL SAFETY INFORMATION & INSTRUCTIONS.
WARNING
EC N STENNICAT R
PERISTALTIC METERING PUMP
INSTALLATION AND MAINTENANCE MAN AL

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Warranty and Service Policy ................................................................. 3
Safety Instructions..................................... 4-6, 11, 12, 16-20, 22-24, 26
Materials of Construction .................................................................... 7
Accessories ......................................................................................... 8
Flow Rate utput ................................................................................. 9
peration & Installation................................................................ 10-19
Troubleshooting ............................................................................ 20-22
Tube Replacement ........................................................................ 23-25
Cleaning the Point of Injection...................................................... 26-28
Exploded View and Parts ............................................................... 29-30
Mounting Template ............................................................................ 31
IMST 070820
TABLE OF CONTENTS

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. xcept 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 R L ST 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
Santoprene®is a registered trademark of xxon Mobil Corporation.
AquaShield™is a trademark of Houghton International.
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USA and Canada 800.683.2378, International 904.641.1666 Stennicator
WARRANTY AND CUST MER SERVICE

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IMP RTANT SAFETY INSTRUCTI NS
When installing and using this electrical equipment,
basic safety precautions should always be followed,
including the following:
1.READ AND F LL W
ALL INSTRUCTI NS.
2.WARNING - To reduce the risk of
injury, do not permit children to use
this product unless they are closely
supervised at all times.
3.WARNING - Risk of lectric Shock.
Connect only to a branch circuit
protected by a ground-fault circuit
interrupter (GFCI). Contact a qualified
electrician if you cannot verify that
the receptacle is protected by a GFCI.
4.WARNING - To reduce the risk of
electric shock, replace damaged
cord immediately.
5.SAVE THESE INSTRUCTI NS.

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USA and Canada 800.683.2378, International 904.641.1666 Stennicator
SAFETY INF RMATI N
Warns about hazards that CAN cause death, serious personal
injury, or property damage if ignored.
ELECTRIC SH CK HAZARD
ELECTRIC SH CK 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). For
locations other than US and Canada, pump must be supplied through a residual
current device (RCD) with a rated residual operating current < 30mA.
DANGER DE CH C ÉLECTRIQUE
La pompe est dotée d’un cordon d’alimentation avec mise à la terre muni d'une fiche.
Pour réduire le risque de choc électrique, branchez uniquement sur une prise
correctement mise à la terre. Installez uniquement sur un circuit protégé par un
disjoncteur différentiel. n dehors des États-Unis et du Canada, la pompe doit être
alimentée par un dispositif à courant différentiel résiduel (RCD) fonctionnant à <30mA.
D N T alter the power cord or plug end.
D N T use receptacle adapters.
D N T use pump with a damaged or altered power cord or plug end. Contact the
factory or an authorized service facility for repair.
HAZARD US V LTAGE
DISC NNECT power cord before removing motor cover for service. Electrical service
by trained personnel only.
EXPL SI N HAZARD
This pump is not explosion proof. D N T install or operate in an explosive environment.
RISK F EXP SURE
Potential for burns, fire, explosion, personal injury, or property damage. To reduce risk
of exposure, the use of proper personal protective equipment is mandatory.
RISK F FIRE HAZARD
D N T install or operate on any flammable surface.
RISK F CHEMICAL VERD SE
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 and knowledge, unless they have been
given supervision or instruction.

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SAFETY INF RMATI N continued
Warns about hazards that WILL or CAN cause minor personal
injury or property damage if ignored.
PLUMBING
Metering 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.
N TICE: 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.
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.
Acceptable for indoor and outdoor use.
Acceptable pour une utilisation aussi bien à l’intérieur qu’à l’extérieur.
lectrical installation should adhere to all national and local codes. Consult a licensed
professional for assistance with proper electrical installation.
Removing power from pool/spa recirculation pump must also remove power from pump.
The use of an auxiliary safety device (not supplied), such as a flow switch or sensor,
is recommended to prevent feed pump operation in the event of a recirculation
pump failure or if flow is not sensed.
Point of injection should be beyond all pumps, filters, and heaters.
Maximum temperature = 40°C.

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USA and Canada 800.683.2378, International 904.641.1666 Stennicator
MATERIALS F C NSTRUCTI N
All Housings
Polycarbonate
Pump Tube & Check Valve Duckbill
Santoprene®(FDA approved)
Pump Head Rollers
Polyethylene
Suction/Discharge Tubing & Ferrules
Polyethylene (FDA approved)
Suction Line Strainer and Cap
PVC or Polypropylene (both NSF listed); ceramic weight
Tube & Injection Fittings
PVC or Polypropylene (both NSF listed)
Connecting Nuts
PVC or Polypropylene (both NSF listed)
All Fasteners
Stainless Steel

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ACCESS RIES
Contents
3 Connecting Nuts 1/4"
3 Ferrules 1/4"
1 Duckbill Check Valve
1 Weighted Suction Line Strainer 1/4"
1 20' Roll of Suction/Discharge Tubing 1/4" White
1 Additional Pump Tube
1 Manual

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USA and Canada 800.683.2378, International 904.641.1666 Stennicator
FL W RATE UTPUT
N TICE: The information within this chart 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.
FL W RATE UTPUT
Item Number Prefix Pump Tube Roller Ounce Pressure Milliliters Pressure
Assembly per Minute Max. psi per Minute Max. bar
20MH H Black 2.7 80 74.0 5.5
Approximate Maximum Outputs @ 50/60Hz
NOT : Duckbill check valve included with pumps rated 80 psi (5.5 bar) maximum.
Setting Run Time*in seconds
Simplex Duplex
PRIM 60 60
1 PPG 22 11
1 PPL 63
10 PPG 21
*Times are approximate (in seconds).
Key
PPG pulse per gallon**
PPL pulse per liter
**10 PPG is often referred to as 0.1 US gallons per pulse

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PERATI N
The Stennicator requires a signal from a water meter providing a dry contact at a setting of
1PPG, 10 PPG or 1 PPL. It will proportionally dose at a ratio of 1:128 (1 oz. per gallon) to
treat process flow rates up to 2.7 gpm*. At any point, the potentiometer can be turned to
the proper contacting rate setting (1 PPG, 10 PPG, or 1 PPL) to begin dosing proportionally
at the rate of 1:128.
The pump incorporates a signal repeater relay, which will repeat the incoming signal to
another Stennicator, device, or controller.
Turning the potentiometer to PRIM initiates a 60 second cycle to prime the pump. TH
PRIM CYCL HAS A 5 S COND D LAY. At the end of the PRIM cycle, the pump will stop
and will remain stopped until it is set to a contacting rate.
Turning the potentiometer to STANDBY, stops the pump and resets the PRIM cycle. To run
another PRIM cycle, set to STANDBY, then turn the potentiometer to PRIM . When the
pump is placed in STANDBY, it will not dose when it receives a signal from the water meter,
but it will still repeat the incoming signal.
The installation can be duplexed by using two Stennicator pumps to keep pace at higher
flow rates. By properly wiring the signal cables (details in the installation section) each
pump will deliver at a ratio of 1:256 (0.5 oz. per gallon) to achieve a ratio of 1:128 (1 oz.
per gallon). This will allow a ratio of 1:128 up to flows of 5.4 gallons per minute.
*At flow rates above 2.7 gpm the pump will run during its cycle and miss the next meter dry contact. It will
restart when it receives the next dry contact.

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USA and Canada 800.683.2378, International 904.641.1666 Stennicator
INSTALLATI N
ADDITI NAL SAFETY INSTRUCTI NS
N TICE: 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.
se all required personal protective equipment when working on or near a
metering pump.
Install the pump so that it is in compliance with all national and local plumbing
and electrical codes.
se the proper product to treat potable water systems, use only additives listed or
approved for use.
Inspect tube frequently for leakage, deterioration, or wear. Schedule a regular pump
tube maintenance change to prevent damage to pump and/or spillage.
Pump is not recommended for installation in areas where leakage can cause
personal injury or property damage.

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INSTALLATI N continued
M UNT PUMP
Select a dry location (to avoid water intrusion and pump damage) above the
solution tank.
To prevent pump damage in the event of a pump tube leak, never mount the pump
vertically with the pump head up.
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.
To prevent motor damage, verify with a volt meter that the receptacle voltage
corresponds with the pump voltage.
1. Connect the wires
Simplex Installation
a. Connect the BLACK & R D wires from the pump to the dry contact input from
the water meter.
b. Connect the GR N & WHIT wires from the pump to another device that
accepts a dry contact input as desired or required by the application.
Duplex Installation
a. Connect BROWN (or ORANG ) & BLU wires together in Pump #1.
b. Connect BROWN (or ORANG ) & BLU wires together in Pump #2.
NOT : The BROWN (or ORANG ) & BLU wires are connected to allow for the
pumps to run at half of the standard cycle time. This allows the signal output,
from the first pump, to be provided to a second Stennicator to allow treatment of
up to 5.4 of process flow. DO NOT connect the BROWN (or ORANG ) & BLU
wires from one pump to another.
c. Connect GR N & WHIT wires of Pump #1 to BLACK & R D wires of Pump #2.
d. Connect BLACK & R D of Pump #1 to the dry contact input from the water meter.
e. Connect the GR N & WHIT wires from Pump #2 to another device that
accepts a dry contact input as desired or required by the application.
2. Set the potentiometer to STBY.
3. Plug the power supply into a receptacle.
NOT : The repeater relay is rated for a maximum signal level of 36VDC @ 25mA.

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USA and Canada 800.683.2378, International 904.641.1666 Stennicator
INSTALLATI N DIAGRAM – RELAY WIRING
EC N STENNICAT R
EC N STENNICAT R & EC N INTEGRAT R™
Controller
If applicable
Pulse Meter
BLACK
RED GREEN
BLACK
RED
BLACK
RED
WHITE
Flow Indicator
Econ Stennicator
Controller
If applicable
Pulse Meter
Flow Indicator
Econ Stennicator
Econ Integrator™
Econ Integrator™
BLACK
RED GREEN
BLACK
RED
WHITE BLACK
RED GREEN
WHITE BLACK
RED GREEN
WHITE
BLACK
RED

Direction of water flow
Disassembled view
of nut and ferrule
Water Meter
Water Meter
Output Cable
Pump Input
Signal Cables
Grounded Power Outlet:
(Grounded-Fault Circuit-
Interrupter GFCI)
Suction Line
Discharge Line
Shut-Off Valve
Duckbill
Disassembled View of
Duckbill Check Valve
Up to 80 psi max.
Flow
direction
of solution
Power Cord
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INSTALLATI N DIAGRAM – SIMPLEX
Solution Tank
Repeater
Relay
BROWN
or ORANGE
Water
Meter
Connect
for Duplex
Operation
BLACK
WHITE
RED
GREEN
BLUE

Shut-Off
Valve
Direction of water flow
Water Meter
Disassembled
view of nut
and ferrule
Power Cord
Grounded Power Outlet:
(Grounded-Fault Circuit-
Interrupter GFCI)
Pump Input
Signal Cables
Water Meter
Output Cable
Discharge Line
Duckbill
Disassembled View of
Duckbill Check Valve
Up to 80 psi max.
Flow
direction
of solution
Solution Tank
Pump #1 Pump #2
Suction Line
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USA and Canada 800.683.2378, International 904.641.1666 Stennicator
INSTALLATI N DIAGRAM – DUPLEX
BLUE
To
Controller
To
Water
Meter
BLACK
RED
BLACK
BROWN
or ORANGE
BROWN
or ORANGE
BLUE
GREEN
RED
GREEN
WHITE
Pump #2
Pump #1
WHITE

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INSTALLATI N continued
Suction Line
INSTALL SUCTI N LINE T 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.
ver tightening the nut with a wrench may result in damaged fittings, crushed
ferrules, and air pick up.
D N T use thread sealant tape on pump tube connections or tools to
tighten connections.
DO NOT use pliers.
NOT : Beveled ends of
ferrules face pump. Tubing
should bottom into all fittings.
Finger tighten nut
Discharge Line
Ferrules
DO NOT use Teflon tape
on pump tube threads.

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USA and Canada 800.683.2378, International 904.641.1666 Stennicator
INSTALLATI N continued
INSTALL SUCTI N WEIGHT T SUCTI N 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.
D N T mix additives in the solution container. Follow recommended mixing
procedures according to the manufacturer.
D N T operate pump unless additive is completely in solution. Turn pump off
when replenishing solution.
D N T slide tubing all the way to the bottom of the weighted strainer. Tubing
could become flush with the nose of the strainer and the pump may not prime
due to blockage.
3"
Suction Line
3.5"
(9 cm)
Weighted
Suction Line
Strainer

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INSTALLATI N continued
INSTALL DISCHARGE LINE T PUMP HEAD AND INJECTI N P INT
1. Make a secure finger tight connection on the discharge fitting of the pump head as
instructed in Install Suction Line instructions.
D N T use thread sealant tape on pump tube connections or tools to
tighten connections.
HAZARD US 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 threading tape.
If necessary, trim the injection fitting quill as required to inject product directly into
flow of water.
Trim injection fitting end
DO NOT use Teflon
tape on pump
tube threads.
DO NOT use pliers. Duckbill
Check Valve
Shut-Off Valve
1/4" or 1/2" FNPT
Reduction Bushing
Typical Point of Injection

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USA and Canada 800.683.2378, International 904.641.1666 Stennicator
INSTALLATI N continued
4. Hand tighten the injection fitting into the FNPT fitting.
a. Install connecting nut and ferrule to the pump discharge tubing. Insert discharge
tubing into injection fitting until it reaches base of fitting.
b. Finger tighten connecting nut to fitting.
5. Turn pump on and re-pressurize system. Observe flow as actuated by system and
check all connections for leaks.
6. After suitable amount of dosing time, perform tests for desired readings (e.g., pH or
ppm). If necessary, fine tune dosing levels by rotating potentiometer or by adjusting
solution strength.
The injection point and fitting require periodic maintenance to clean any
deposits or buildup. To allow quick access to the point of injection, Stenner
recommends the installation of shut-off valves.

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TR UBLESH TING – DRIVE ASSEMBLY
HAZARD US V LTAGE
DISC NNECT power before service. Electrical service should be performed by trained
personnel only.
PR BLEM P SSIBLE CAUSE S LUTI N
Noise is excessively loud Lubrication is insufficient Grease gears and gear posts
Gears or gear posts are worn Inspect/replace gears and gear posts
Drive assembly does not work lectrical supply is faulty Check supply voltage circuit
DC motor is damaged Replace drive assembly
Power cord is damaged Replace drive assembly
Drive assembly runs; Worn or damaged gears Replace gears as needed
output shaft does not
Phenolic gear is stripping Gear posts worn Replace gear posts and phenolic gear
Rusted helical gear Buff off helical gear and replace phenolic gear
Insufficient lubrication Replace phenolic gear and lubricate
with AquaShield™
Output shaft does not turn Worn or damaged roller assembly Replace roller assembly
Worn or damaged gears Replace gears as needed
Damaged circuit board Replace drive assembly