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TABLE OF CONTENTS 

PAGE

OPERATING INSTRUCTIONS MANUAL

        WARNING: 

1. Each person involved in the assembly, installation and/or maintenance of the 

Hydro-Guard Automatic Flushing Device must read this manual carefully and follow 

all instructions prior to performing any installation or maintenance procedures 

involving the Unit. 

2. Verify the drainage path prior to installation to ensure that pedestrian and 

vehicular hazards will not be created by the installation and use of the Hydro-

Guard Automatic Flushing Device (In areas in which freezing may occur, special 

attention should be given to this procedure). 

3. Never assemble, disassemble, or perform Hydro-Guard maintenance unless the 

influent supply valve has been closed, verified and secured, and internal piping 

pressure has been relieved. 

4. Always use all necessary safety equipment and follow all recommended 

procedures when installing, operating and maintaining the Hydro-Guard Automatic 

Flushing Device. 

5. Perform annual safety inspections and replace worn or defective parts. 
6. Operate the Hydro-Guard Automatic Flushing Device only when fully installed and 

correctly assembled. 

        CAUTION: 

The recommended optimal operating pressure for a Hydro-Guard® Automatic Flushing 

System is between 20psi and 120psi. In the event pressure may exceed 120psi it 

is recommended that a Pressure Regulating Valve be installed ahead of the Hydro-

Guard flushing system.  

Customer Service Center  

Decatur, Illinois  

800.798,3131  

www.muellercompany.com/hydro-guard  

moreinfo@muellercompany.com

HG-3 Automatic 

Flushing System

Installation Instructions  

2

Programming Unit  

Assembly, Disassembly & 
Maintenance Instructions  

4

Troubleshooting  

5

Parts 6

Options and Upgrades  

7

F 12774 12/20

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Summary of Contents for Hydro-Guard HG-3

Page 1: ...piping pressure has been relieved 4 Always use all necessary safety equipment and follow all recommended procedures when installing operating and maintaining the Hydro Guard Automatic Flushing Device 5 Perform annual safety inspections and replace worn or defective parts 6 Operate the Hydro Guard Automatic Flushing Device only when fully installed and correctly assembled CAUTION The recommended op...

Page 2: ...ect for possible damage during shipping 2 Excavate a suitably sized ditch ensuring it is connected on one side to the utility s service line trench Remove any debris that might create uneven pressure on the Unit Compact the bottom of the hole in order to minimize settling after installation Place 57 stone then non compacted clean bedding material within the bottom of the hole Turn off service line...

Page 3: ...noids will come from the manufacturer with the plunger already magnetically latched open some zones will default to OPEN Follow the start up procedure for systems with DC Latching Solenoids Page 09 CAUTION For every change to the program in the Mobile App you must exit back to the home screen and tap the blue TRANSMIT button bottom right corner The Application aggregates changes and transmits them...

Page 4: ...red HG 3 Battery Replacement 1 Shut off water supply to unit 2 Use HG A2023 Security Tool to unlock and remove protective Exterior Housing Cover 3 Unscrew protective cap from gray Programming Interface which is located at top of unit 4 Extract battery harness and remove old battery dispose of battery appropriately 5 Connect fresh industrial grade 9 volt lithium or alkaline battery and reinsert it ...

Page 5: ...eak or dead Connection loss from controller to solenoid Solenoid not working properly Obstruction In flow of water Trv this Correction Check If curb stop Is open Change batteries Check connections for corrosion breaks or lack of connection Run a manual flush and confirm the solenoid plunger is kicking out and pulling back in by listening for a click Check to make sure the flow control knob is open...

Page 6: ...embly 4 546329 Riser Assembly 5 546519 Dechlorination System 6 HG S316 Stainless Steel Housing Bracket 7 545729 Centering Star 8 HG S126 Insulation Star Sub Assembly 9 HG S128 Freeze Protection System Sub Assembly 10 545729 Centering Star 11 545738 Splash Pad 12 HG 13105 Latching Rods x 26 13 HG S124 Latching Solenoid Sub Assembly 14 HG S325 Control Valve Sub Assembly 15 546330 Bottom Plate Sub As...

Page 7: ...ts and services MWP does not provide products or services to third parties MWP and each of its subsidiaries are liable only for their own acts and omissions and not those of each other MWP brands include Mueller Echologics Hydro Gate Hydro Guard HYMAX Jones Krausz Mi Net Milliken Pratt Singer and U S Pipe Valve Hydrant Please see muellerwp com brands and krauszusa com to learn more 2020 Mueller Wa...

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