ELECTROSEA ElectroStrainer ES-125 User manual

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www.electrosea.com
Installation Manual Models: ES-125 / ES-100
ElEctroStrainEr®System

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Introduction
COPYRIGHT © 2022
No part of this publication may be reproduced, translated, stored in a retrieval system, or transmitted in any form or by any means electronic, mechanical, photocopying, recording, or otherwise without the
prior written consent of ElectroSea, LLC. Every precaution has been taken in the preparation of this manual to ensure its accuracy. ElectroSea assumes no responsibility for errors and omission. Neither is
any liability assumed for damages resulting from the use of this product and information contained herein.
Introduction
Table of Contents 2
ElectroSea and ElectroStrainer System 3
Components 4
Safety Considerations 5
Pre-Installation Descaling of Seawater Conduits 5
Optimal Performance & Maintenance
Optimal Performance 6
Strainer Flow Alert 6
Cell Indicator 7
Installation Overview
Electrical Connection Overview 8
Seawater Connection Overview 9
Canister Installation
Canister Preparation 10
Mounting Options 11
Canister and Flow Sensor 12-13
Chlorinated Return Line to Canister 14
Canister Reassembly 15
Control Unit Installation
Control Unit Mounting and Wiring 16
Important Information
Specifications 17
Warranty Policy
Please visit our website at www.electrosea.com/warranty to
view our full warranty terms and conditions.

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Introduction
ElEctroSEa®
ElectroSea was created when the owners of a sportfishing vessel invented “a better way” to prevent biofouling in their seawater cooling system. Solving complex
technical problems is our expertise. With more than 100 issued U.S. patents and 350+ foreign patents in advanced technologies, our executive management team
has been developing innovative solutions for more than 50 years. With an expert team of “old salts” who eat, sleep, and breathe boating, ElectroSea will improve
your time on the water.
ElEctroStrainEr®System
ElectroStrainer is a revolutionary seawater biofouling prevention device, a sea strainer, and a smart seawater flow-monitoring unit all combined into a single
system. ElectroStrainer provides an entirely new way for boaters to prevent biofouling, barnacles, and bioslimes from clogging sea strainers and seawater pipes
for air conditioners, chillers, and refrigerators. ElectroStrainer provides ease of use never seen before in a sea strainer and completely redefines seawater system
maintenance.
• ElectroStrainer is a Biofouling-Prevention Device: ElectroStrainer continuously creates a safe and effective low level of chlorine to protect the entire
seawater system. ElectroStrainer contains a Cell with a proprietary mixed metal-oxide coating. When electrified, it acts as a catalyst to generate chlorine
naturally from the seawater passing through it. No chemical additives are required.
• ElectroStrainer is a Sea Strainer: Typical sea strainers become clogged as bioslime, algae, and barnacles build up over time in the strainer basket pores.
ElectroStrainer solves this problem by preventing unwanted marine growth by generating chlorine directly inside its sea strainer basket. Strainer pores remain
open, free, and clear so protected seawater can pass downstream to cooling equipment and decrease the frequency of strainer-basket cleaning.
• ElectroStrainer is a Smart Seawater Flow-Monitoring System: ElectroStrainer provides real-time monitoring with Smart Strainer Alert technology and
automatically notifies you to check the strainer if it requires attention. ElectroStrainer monitors vessel seawater flow 24/7/365 days a year and displays the
seawater flow rate in real time.

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Introduction
Components
Canister Assembly
The ElectroStrainer System includes the Control Unit, Canister Assembly, and all components listed below:
Control Unit
• (1) Control Unit
• (3) Cables
− (1) Power: 20’ (6.1 m)
− (1) Cell: 20’ (6.1 m)
− (1) Flow Sensor: 20’ (6.1 m)
• (4) Mounting Screws #10 x 1” (2.54 cm)
Major components are shown above.
• (1) Canister, Strainer Basket, and Cell
• (1) ClearVis Flow Sensor
• (4) Hose Connectors
• (1) Top-Side Mounting Bracket
• (1) Bottom-Mounting Bracket
• (2) Machine Screws M5 Round Head
• (3) Machine Screws M6 Round Head
• (1) Lock Nut M6
• (1) Machine Screw M8 Round Head
• (8) Mounting Screws #12 x 1.25”
(3.2 cm) Flat Head
• (1) Chlorinated Return-Line Tubing
• (1) Return-Line Tee-Fitting
• (1) Return-Line Valve
• (4) Return-Line Hose Clamps
• (1) Strain-Relief Clamp for Return-Line Tubing
• (1) Optional Return-Line Canister Cap

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Introduction
Safety Considerations
Improper installation can result in unsatisfactory performance, premature failure, and damage to systems in the seawater circuit and/or to the vessel.
WARNING Indicates a hazardous situation that, if not avoided, could result in death or serious injury.
CAUTION Indicates a hazardous situation that, if not avoided, could result in minor or moderate injury.
NOTICE Indicates a hazardous situation that can cause damage to personal property, the environment, or equipment.
Pre-Installation Descaling of Seawater Conduits
Pre-installation descaling ensures any existing biofouling that has accumulated on the interior seawater lines are removed. If seawater lines are impacted with
barnacles and marine growth, ElectroSea recommends professional descaling prior to installing the ElectroStrainer System. By starting with descaled and clean
seawater lines, you will realize the full benefit of the ElectroStrainer System. For new vessels, descaling is not necessary.
DO NOT perform acid descaling after the ElectroStrainer System has been installed. Descaling acids will damage the ElectroStrainer
and void the warranty.
NOTICE
Low seawater flow may damage the cooling system and other components that depend on this water for proper operation. It is the
owner’s responsibility to monitor the vessel’s seawater flow rate and perform any necessary maintenance.
NOTICE
ElectroStrainer is an all-in-one sea strainer and electrochlorination system. ElectroStrainer replaces existing sea strainers. If there is
an existing sea strainer in the vessel, remove it and install the ElectroStrainer Canister in the same location.
NOTICE

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Optimal Performance & Maintenance
Optimal Performance
Constant Chlorinated Seawater Flow: The ElectroStrainer System should be powered ON and have seawater flowing through it whenever possible.
This provides the vessel’s seawater circuit with constant chlorinated seawater to prevent unwanted marine growth. Intermittent or stagnant seawater
that is not continuously electrochemically treated allows growth of marine microorganisms. Barnacles have the innate ability to close themselves off and survive
intermittent exposure to biocidal agents:
• DO NOT turn off seawater pumps, air conditioners, or chillers for an extended period of time.
Inspect the vessel for problem areas:
• Pre-existing biofouling in seawater lines prior to ElectroStrainer installation
• Clogged seawater intakes
• Impacted, blocked, or occluded lines from debris lodged in plumbing
• Sporadic demand valve areas (Depending on the system, valves that turn on and off can foster unwanted marine growth.)
Strainer Flow Alert: The Strainer Flow Alert feature monitors seawater flow through the ElectroStrainer. This smart strainer system notifies the user if the
ElectroStrainer basket contains debris, such as seaweed or mud; or part of the seawater circuit, such as the intake screen or thru-hull fitting, is partially blocked; or
the seawater pump is producing low flow and requires maintenance. The Strainer Flow Alert feature allows the user to set a minimum seawater flow rate threshold
value and time duration. If the seawater flow rate drops below the minimum value for a period of time, “CHECK STRAINER / FLOW ALERT” will flash on the display (no
audible alert). Flow rate can be set in GPM or LPM, with the time duration set in minutes. To set the Strainer Flow Alert value, go to Menu, Flow Alert and enter the
desired threshold flow rate and time duration for notification
The Strainer Flow Alert feature is OFF by default and must be set up by the installer or end user.
ElectroStrainer will continue generating chlorine even after a Strainer Flow Alert occurs.
If a Strainer Flow Alert occurs
1. Check vessel’s intake screens for blockage or debris.
2. Check seawater pump output, impeller, or other causes of low flow.
3. Check ElectroStrainer basket for debris, seaweed, or mud.
Strainer Flow Alert
>-Flow Alert -Update
-Display
-Cell
-Default -Exit
NOTICE
NOTICE

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Optimal Performance & Maintenance
Cell Indicator: The Control Unit will display “SALINITY/CELL,” “% OUTPUT,” and illuminate the red Cell LED in various conditions. This is not an immediate cause for
concern and may be temporary depending on seawater salinity level. ElectroStrainer will continuously attempt to generate chlorine and automatically resume
standard operation when conditions are resolved. The Cell Indicator will be illuminated if any of the following conditions occur for multiple consecutive days:
• Water salinity is below 20 parts per thousand. (This is the most common cause of a Cell Indicator notice.)
• ElectroStrainer Cell Cable or its connectors have been compromised.
• ElectroStrainer Cell has excessive mud or other debris.
• ElectroStrainer Cell is at the end of its useful life.
Water Salinity
• Vessels often encounter brackish or fresh water when cruising inland or from extended storms and freshwater runoff.
• Low salinity is the most frequent cause of the Cell Indicator.
• ElectroStrainer will not display “CLEANING” or generate chlorine while the vessel is operating in fresh water.
RESOLUTION: Return vessel to seawater with adequate salinity.
ElectroStrainer Cell Cable
• The ElectroStrainer Cell Cable and connections must not be spliced, cut, compromised, or damaged.
• Inspect the Control Unit-to-Cell Cable carefully. Look for any corrosion at the connectors.
RESOLUTION: Replace the ElectroStrainer Cell Cable if it is compromised.
Excessive Mud or Other Debris
• If there is excessive mud or other debris, the ElectroStrainer Cell may require a brief rinse with fresh water.
RESOLUTION: Refer to the operation manual for instructions.
ElectroStrainer Cell at End of Life
• When the ElectroStrainer Cell has reached the end of its useful life, it can no longer generate chlorine. The Cell life is dependent on flow rate, hours of use,
seawater quality, and other factors.
RESOLUTION: Contact your ElectroSea dealer.
Cell Indicator
ESTUARY
OCEAN

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Installation Overview
1.
Electrical Connection Overview
DO NOT cut, extend, or splice the Cell Cable.
DO NOT connect multiple Cell Cables together.
The Cell Extended Cables in the table below show the total cable
length from the Control Unit to the Cell.
Modification of the ElectroStrainer Cell Cable will impair operation.
NOTICE
NOTICE
2. The Canister Assembly must be connected to the vessel’s bonding circuit.
Bonding wire to
vessel ground
12 or 24 VDC
20’ (6.1 m)
20’ (6.1 m)
ELECTROSTRAINER CONTROL UNIT MUST BE LOCATED WITHIN:
ES-100 ES-125
Canister Assembly 20 ft. (6.1 m) 20 ft. (6.1 m)
Flow Sensor 20 ft. (6.1 m) 20 ft. (6.1 m)
Power Source 20 ft. (6.1 m) 20 ft. (6.1 m)

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Installation Overview
Seawater Connection Overview
1. Locate the vessel’s seawater intake pump, strainer (if existing), and
seacock shut-off valves. Turn OFF ALL seacock shut-off valves in the
seawater circuit at or below the waterline. This includes any output
seacocks to prevent back siphoning.
2. The Canister Assembly should be installed before the pump and
before any seawater-cooled equipment, such as air conditioners,
chillers, etc. If there is an existing sea strainer, remove it and
install the ElectroStrainer Canister in the same location. The
Canister Assembly should be installed at or below the waterline and
as close to the thru-hull as possible.
3. A chlorinated return line may be connected after the flow
sensor and seawater pump to return chlorinated seawater directly
to the ElectroStrainer Canister Assembly. This will help prevent
growth at the inlet of the strainer basket. See page 14 for details.
DO NOT USE DESCALING SOLUTIONS, ACIDS, OR CLEANING
CHEMICALS AFTER ELECTROSTRAINER HAS BEEN INSTALLED. THIS WILL DAMAGE
THE ELECTROSTRAINER CANISTER ASSEMBLY AND VOID THE WARRANTY.
Before beginning ElectroStrainer System installation, turn
OFF all seacock valves in the seawater circuit.
Use marine-grade hose and double clamp with two
stainless-steel clamps, reversing the clamps. Failure to properly secure
seawater connections could result in sinking the vessel.
DO NOT exceed the ClearCell pressure specifications.
All seawater plumbing connections must be performed by a
qualified marine installation professional.
PTFE should not be used on plastic connections. Avoid over
tightening parts as they may crack and result in sinking the vessel.
DO NOT decrease seawater flow below the manufacturer’s
specifications for downstream cooling equipment.
Limit the use of 90° elbows as they restrict flow and cause
pressure drop.
ElectroStrainer is made of 2205 Duplex Stainless Steel for
corrosion resistance. Do not connect dissimilar metals to it if possible.
Use only original parts supplied by ElectroSea. They are
made of special titanium, stainless, and other high-quality materials. Use of
non-factory or substitute parts will void the warranty.
WARNING
NOTICE
WARNING
NOTICE
WARNING
WARNING
WARNING
NOTICE
NOTICE
WARNING

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Canister Installation
Canister Preparation
1. Loosen the pressure ring by turning the wing
nuts counterclockwise.
3. Remove the Cell Assembly. Lift straight up by
the black plastic cover. Do not lift or pull on
the cable. Set the Cell Assembly aside in a safe
location. Remove the strainer basket. Now you
can work with just the Canister for mounting.
2. Remove the pressure ring.
123

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1. The Canister Assembly must be installed so it is level and at or below the waterline.
Mount the Canister Assembly level to prevent the accumulation of harmful
excess air/gas.
2. The Canister Assembly can be mounted using one of two options as shown below:
Canister Installation
Mounting Options
WARNING
1. Attach top-mount brackets with (2) M5 screws.
2. Attach bottom bracket with (2) M6 screws (front side) or (1)
M8 screw (back side).
3. Secure to stringer or other appropriate load-supporting vertical
surface with (8) #12 mounting screws.
OPTION B
Side Mounting
OPTION A
Base-Tab Mounting
1. Mount Canister to flat, interior engine-room surface.
2. Insert (3) #12 mounting screws into the base tabs to secure
the Canister.
WARNING
Do not screwthrough the hull ofthe boat.
1
Mount
Level
Top
Bracket
Bottom
Bracket

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Canister Installation
Canister and Flow Sensor
1. The Canister Assembly has directional IN and OUT labels. Seawater MUST
enter at the IN port and flow through and exit at the OUT port.
Failure to route seawater in the direction of the IN and
OUT labels will result in improper operation of the ElectroStrainer System.
2. The ClearVis Flow Sensor has a flow-direction arrow and seawater must
enter and exit according to the marked arrow. The ClearVis Flow Sensor
MUST BE installed on the same seawater line/pipe as the ElectroStrainer
Canister. The Flow Sensor tells ElectroStrainer how much chlorine to
generate. DO NOT install the Flow Sensor on a separate or ancillary seawater
line/pipe from ElectroStrainer.
The Flow Sensor is made of glass-filled nylon for superior
strength; however, this makes the threads less malleable and rougher than
other plastics. When sealing to the Flow Sensor, it is recommended that a thread
sealant without PTFE is used.
The ClearVis Flow Sensor measures the velocity of seawater
using speed-of-sound technology. It is preferable to have 12” (30.5 cm) of
straight hose before and after the ClearVis Flow Sensor. This decreases
seawater turbulence and improves the speed, accuracy, and precision of the
ClearVis Flow Sensor measurement.
DO NOT place a 90° elbow or other flow-restrictive
plumbing fittings immediately after the ClearVis Flow Sensor output. The
Flow Sensor will be unable to obtain a consistent reading, and the Control Unit
may be unable to enter the CLEANING mode. The flow sensor can be placed either
upstream (suction side) or downstream (pressure side) of the seawater pump
that the ElectroStrainer resides on.
NOTICE
NOTICE
NOTICE
NOTICE
DO NOT INSTALL A 90°°
ELBOW ON THE OUTPUT
OF THE FLOW SENSOR.
3
OUT
1
IN
Flow Sensor must be
oriented so seawater
follows the direction
of the flow arrow.
2

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Canister Installation
There are two options for the location of the ClearVis Flow Sensor:
3. The “BEST” location for the ClearVis Flow Sensor is after the Canister
output with at least 12” of straight hose before and after the
Flow Sensor. The ClearVis Flow Sensor can also be installed on the
pressure side of the pump.
4. An “ACCEPTABLE” location for the ClearVis Flow Sensor is on the output
of the ElectroStrainer Canister with at least 12” of straight hose
after the Flow Sensor.
All seawater flowing through the ElectroStrainer
Canister Assembly must flow through the Flow Sensor. DO NOT split
or divert seawater before the ClearVis Flow Sensor as this will tell the
Control Unit to generate an incorrect amount of chlorine.
5. Connect the threaded male or female PVC hose connectors to the
ElectroStrainer Canister and/or flow sensor (see picture 3 or 4).
6. Use thread sealant without PTFE on all connections.
PTFE should not be used on plastic parts. Avoid
over tightening plastic parts as they may crack and result in sinking
the vessel.
7. Use two hose clamps, reversing the clamps, over flexible
hose connections.
8. Add a flexible hose hanger, hose strap, or hose-support bracket
within 12” of the ClearVis Flow Sensor to ensure the ClearVis Flow
Sensor is supported.
Canister and Flow Sensor
WARNING
WARNING
BEST: 12” of straight hose before and after Flow Sensor
ACCEPTABLE: Flow Sensor at ElectroStrainer output with
12” of straight hose after Flow Sensor
8
Support
weight of hose
Flow
Sensor
4
7
8
Flow
Sensor
Support
weight of hose
3
7

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Canister Installation
1. To prevent growth at the inlet of the ElectroStrainer basket, a chlorinated return line should be
connected from the pressure side of the pump to the Canister Assembly’s 90-degree fitting
located under the inlet port.
2. Connect this chlorinated return line with a tee-fitting and ball valve to the pressure side of the
pump. Note: The source for the chlorinated return line must be after the seawater pump
(on the pressure side) and after the ClearVis Flow Sensor.
3. Connect the chlorinated return-line tubing suppled with the Canister Assembly to the 90-degree
hose barb fitting directly under the inlet port. Secure the tubing with two hose clamps, reversing
directions, and clamp securely.
4. Secure the chlorinated return line tubing with the Strain-Relief Clamp. The Strain-Relief Clamp can
be connected to the feet or wall bracket. Use the included mounting screw or nut and bolt.
ElectroStrainer can be installed without a
chlorinated return line. The chlorinated return line provides
the greatest protection from biofouling in the strainer basket.
IF THE CHLORINATED RETURN LINE WILL NOT BE USED, USE ONLY
THE SPECIAL 2205 ALLOY PLUG PROVIDED. DO NOT USE ANOTHER
TYPE OF METAL PLUG. This will void the warranty. Note: There
may be a small amount of biogrowth in the strainer basket if
the chlorinated return line is not used.
The chlorinated return line decreases
the overall flow rate to downstream equipment. Check
downstream equipment flow requirements and DO NOT add a
chlorinated return line if this will result in low flow to
cooling equipment.
NOTICE
Chlorinated Return Line to Canister
WARNING
4
1
3
2

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Canister Installation
1. Insert the strainer basket into the Canister. Align the flat
edge of the basket with the flat edge of the Canister.
2. Confirm the gasket is in the top of the Canister.
3. The Canister and lid are keyed and can be inserted in
only one direction. Align the flat edge of the Cell screen
and strainer basket. Make sure the lid key is aligned
with the Canister, then insert the Cell Assembly into the
Canister.
DO NOT use chemicals, acids,
descaling solutions, or zincs in the ElectroStrainer
Canister or on the Cell. This will damage the Cell.
4. Add the pressure ring to the top of the Canister. Bleed
excess air from the Canister, then tighten down the
wing nuts evenly. Do not use tools to perform this
tightening process. Work in a star pattern so all wing
nuts are evenly secure.
5. Double-check that all fittings, hose clamps, and wing
nuts are secure. Open the seacock valves and verify
there are no leaks.
WARNING
Canister Reassembly
Flat Edge
1
Gasket
2
4
Lid Key
3

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Control Unit Installation
Location and Mounting
1. Mount the ElectroStrainer Control Unit (1) on a bulkhead in the engine room using
the four #10 stainless-steel Mounting Screws provided. The Control Unit is designed
for marine engine rooms with a maximum environmental temperature of 122 °F
(50 °C). Do not mount the Control Unit in an area that receives excessive heat.
Control Unit to 12- or 24-VDC Power Supply
2. Power OFF the Control Unit (2) before beginning the wiring process below. Locate
an always-on, 12- or 24-VDC power source on the vessel. Connect the RED (+) and
YELLOW (-) wires of the Power Cable to this source according to the appropriate
electrical standards (i.e., ABYC). Connect the Power Cable (A) to the Control Unit.
Failure to Power OFF the Control Unit during the wiring process
could result in damage to the ElectroStrainer System.
Control Unit to Canister
3. Connect the Cell Cable (B) between the Control Unit and the Canister.
Control Unit to ClearVis Flow Sensor
4. Connect the Flow Sensor Cable (C) to the Control Unit and the Flow Sensor.
Canister Bonding
5. Connect vessel bonding wire to the Canister bonding terminal according to
appropriate bonding standards (i.e., ABYC).
Failure to bond ElectroStrainer will void the warranty.
Control Unit Mounting and Wiring
NOTICE
NOTICE
AB
Sample Vessel
12- or 24-VDC
Source
AC
2
A
B
1
C
Canister Assembly
C
Bonding
Terminal

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Important Information
Specifications
ElectroStrainer Model: ES-125 ElectroStrainer Model: ES-100
ElectroStrainer Control Unit
Dimensions (L x W x H)
9.96 x 6.75 x 3.25 inches
(252.98 x 171.45 x 82.55 mm)
9.96 x 6.75 x 3.25 inches
(252.98 x 171.45 x 82.55 mm)
Weight 4 lb 6 oz (1.98 kg) 4 lb 6 oz (1.98 kg)
Power Source 12 or 24 VDC 12 or 24 VDC
Power Consumption Max Power: 50 watts
Typical Power: 20 watts
Max Power: 50 watts
Typical Power: 20 watts
Internal Circuit Breaker 10 amps 10 amps
Cables Included
Power: 20’ (6.1 m)
Cell: 20’ (6.1 m)
Flow Sensor: 20’ (6.1 m)
Power: 20’ (6.1 m)
Cell: 20’ (6.1 m)
Flow Sensor: 20’ (6.1 m)
ElectroStrainer Canister
Dimensions (L x W x H)
8.20 x 7.72 x 6.26 inches
(208.28 x 196.00 x 158.59 mm)
8.20 x 7.72 x 6.26 inches
(208.28 x 196.00 x 158.59 mm)
Inlet / Outlet 1.25 inches NPT
(DN32)
1.0 inches NPT
(DN25)
Flow Rate Optimal Flow: 6-17 gpm
Min/Max Flow: 4-30 gpm
Optimal Flow: 3-12 gpm
Min/Max Flow: 3-20 gpm
Maximum Operating Pressure 50 psi 50 psi

U.S. Patent No. 11,027,991 and 11,345,621, Foreign Patent No. I782112 and other U.S. and Foreign Patents Pending
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Notes
NOTES:

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Notes
NOTES:

[phone]
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[email protected]
www.electrosea.com
750074-007