MUELLER CO. HYDRO-GUARD HG-8 Instruction Manual

Customer Service Center
Decatur, Illinois
800.798.3131
www.muellercompany.com/hydro-guard
[e-mail]
The content of this manual is the sole and exclusive property of Mueller Co.
Unauthorized distribution or reproduction strictly prohibited.
WARNING:
Platform weight is approximately 60 lbs. Use proper lifting tools and
techniques when loading and/or unloading device and lowering ushing
components into housing to avoid accidental drops and subsequent
damage to the device.
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 inuent supply valve has been closed, veried 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 ushing system.
!
Reliable Connections
TM
HG-8
Warm Climate
Flushing
System
operating instructions manual
TABLE OF CONTENTS PAGE
Installation Instructions 2-3
Programming Unit 3-6
Assembly, Disassembly &
Maintenance Instructions 7
Troubleshooting 8
Upgrades & Battery Replacement 9
Parts 10
Notes 11
HYDRO-GUARD®
!

HYDRO-GUARD® HG-8 Warm Climate Flushing System
Installation Instructions
2
Please read and retain this manual
for future reference, training,
troubleshooting, and maintenance.
Site Evaluation
Each Hydro-Guard®Unit installation
is unique and will require a minimum
of advance planning. Prior to the
installation of the device, the drainage
patterns for the intended installation
location should be reviewed. The
Overview
The Hydro-Guard®HG-8 Warm
Climate Unit, is the industry’s
only Sub-Surface Discharge,
programmable ushing apparatus
(patent pending). This Unit is
suitable for year-round use in warm
to moderate climates. This Automatic
Flushing System has been designed,
engineered, and manufactured to
provide outstanding dependability
and performance.
drainage pattern must permit
discharged water to ow away from
the Hydro-Guard®Unit. Discharged
water ushed from the Hydro-Guard®
Unit must be routed away from the
device. (see Typical Installation
illustration).
The recommended nal discharge
points may include a storm drain,
drainage or retention pond, or a
storm swale.
GENERAL
2. Turn off the service line feed.
3. 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
Hydro-Guard®HG-8 Warm
Climate Flushing Unit
The Hydro-Guard®HG-8 Warm
Climate Flushing System is housed
in a Mueller®Meter Box that is
approximately 21 inches in diameter.
The bury depth options for this design
are 36” or 42”. The box is constructed
with low lead NTP male threads and
is to be placed by the contractor at
a location agreed upon by the end
user. The box features brass inlet and
outlet connections that will route water
from the water utility’s potable water
distribution line through the HG-8’s
ushing components, and discharge
through a discharge service routed to
an acceptable point of discharge (i.e.,
a storm sewer, swale, storm pond,
etc.). The ushing assembly can be
raised and removed for maintenance
and repair and then lowered back
down into the box to center it to
service. An optional medium density
foam insulation pad is available for
frost protection.
WARNING: Proper lifting,
loading/unloading tools and
techniques must be followed
when handling this device.
Damage to working components
can occur if dropped.
1. Remove the Hydro-Guard®Unit
from its packaging and inspect for
possible damage during shipping.
after installation. Place #57 stone.
Then, place non-compacted clean
bedding material within the bottom of
the hole. Provide a bed of crushed
gravel approximately 6 inches thick
or place bricks or cement blocks
below the pit to allow for drainage
and provide support.
INSTALLATION
!
typical installation
2”
Double
Check
Valve
3/8” Poly Tubing
Dechlorination System
TB0S-11 Controller Interface
Lower Alignment Plate
Alignment Rail
Lifting Hoop
Cartridge Alignment Plate

11. Disinfect the Hydro-Guard®
Automatic Flushing Device in
accordance with the utility’s policy.
DO NOT exceed the dosage and
contact times recommended by the
American Water Works Association.
12. The Hydro-Guard®Automatic
Flushing Device may now be
programmed.
13. Once programming has been set,
install lid.
WARNING: We DO NOT
recommend the following:
1) Dumping ll material on top
of the pit; 2) Using machinery to
compact backll.
HYDRO-GUARD® HG-8 Warm Climate Flushing System
Installation Instructions & Programming Unit
2 3
NODE has non-volatile memory,
which allows battery replacement
without losing program
information.
Idle Mode – Waking Up
Normally the NODE display shows
time and day, day of week, and
battery life indicator. During a short
period of inactivity the display will
shut off to retain battery power
Pressing any key will wake up the
NODE to the Idle Mode.
Run Mode
When controller is operating a
program, items shown on display
will include station number (always
“1”), program letter (A, B, or C),
remaining runtime, and a blinking
Rotor icon.
Programming
The NODE has the capability to
hold 3 programs (A, B, C) and 4
start times per program. When
programming, ashing portion of
display can be changed by pressing
+ or – keys. To change something
HG-8 Built-In: (Integrated)
NODE Programming Instructions
Batteries
The NODE uses standard 9-volt
alkaline batteries to operate the
control valve and program the
controller. The controller can operate
with one or two batteries installed.
Under normal conditions, expected
life is 1 year for a single battery and
two years when using two.
Battery Installation
1. Unscrew rear body of the
NODE to gain access to battery
compartment.
2. Insert battery/batteries into battery
tray and connect the battery
connector to controller.
3. Make sure no water is inside
battery compartment.
4. Screw the NODE rear body back
onto front half.
NOTE: Make sure that seal marker
on rear half of the NODE lines
up with front half, ensuring a
proper seal is created. Also, The
not ashing, press LEFT or RIGHT
ARROWS until desired item is
ashing.
Setting Date/Time
1. Press RETURN/ENTER key until
CLOCK icon is displayed.
2. All 4 digits will be displayed
representing the year. Use +
or –keys to change year. Press
RIGHT ARROW key to proceed to
setting month.
3. All 4 digits will be displayed
with two digits on left ashing
representing the MONTH. Use +
or –key to change month. Press
RIGHT ARROW key to proceed to
setting DAY.
4. Only two digits on right will be
ashing, representing the DAY.
Press +or –key to change day.
Press RIGHT ARROW key to
proceed to changing TIME.
5. The AM/PM/24 time setting is
shown ashing. Press +or –key
to change to AM, PM, or 24-hour
time. Press RIGHT ARROW key
to proceed to setting the HOUR.
PROGRAMMING HYDRO-GUARD®UNIT FOR OPERATION
!
INSTALLATION – (continued)
4. Slowly lower the Hydro-Guard
HG-8 Warm Climate Flushing
System into place, pressing it rmly
into the non-compacted bedding
material within the bottom of the
hole.
5. Bury the pit so the top edge is at
ground level.
6. Install the top approximately 11/2”
below existing grade and ensure the
meter lid is level with existing grade.
7. Place the pit in the excavated area
and connect the inlet piping. Hand-
tighten the tting to the pit, then turn
two full turns with a wrench. This
will result in a leak-tight connection,
without placing undue stress on the
pit piping.
8. We recommend installing
approximately 10 ft. of pipe to the
outlet connection so the plumber
that is completing the service
installation does not have to disturb
the connection to the pit and possibly
overtightened the connection or
otherwise affect the contractor’s
proper installation of the pit itself.
9. Backll the hole around the
ushing device with clean ll and/
or #57 stone. Backlling should be
accomplished 12 inches at a time
and hand-tamp each layer until the
service grade is restored.
10. After installation is complete, sod
the area around the Hydro-Guard®
Unit or take other steps in order to
prevent erosion.

HYDRO-GUARD® HG-8 Warm Climate Flushing System
Programming Unit
4
2. Press +or –key to change station
RUN TIME from 1 minute to 6
hours.
3. Press PRG key to add a RUN
TIME to another program.
4. Press RETURN/ENTER key to
proceed to next programming
function, or allow controller to
return to idle mode.
Setting Flushing Days
1. Press RETURN/ENTER key until
CALENDAR icon is displayed. The
program letter (A, B, or C) will be
displayed. Arrows point at specic
days of week in which ushing will
occur.
2. Press LEFT or RIGHT ARROW to
scroll though days.
3. Press + key to activate that day
for program displayed, or –key to
cancel watering for that day. The
arrow will show on ushing days
for active program.
4. Press PRG key to set days to ush
for a different program, if desired.
5. Press RETURN/ENTER key to
proceed to next programming
function, or allow controller to
return to idle mode.
Manual Flushing
Manual ushing allows user to test
the Hydro-Guard®unit or a program
for a specied run time.
Make sure controller is in Idle Mode.
1. Press and hold RIGHT ARROW
until HAND icon is displayed. The
station number (always #1) will
be displayed in lower left side of
display along with RUN TIME.
2. Use the LEFT or RIGHT ARROW
to select #1 station if not already
displayed, and + or – key to set
manual ushing time.
3. To manually activate a program,
press PRG key. Program letter (A,
B, or C) will show on screen. If a
different program is needed, press
PRG key until desired program is
displayed.
6. All 4 numbers are shown with
two numbers on the left ashing,
representing the HOUR. Press +
or –key to change the hour. Press
RIGHT ARROW key to proceed to
setting MINUTES.
7. All 4 numbers are shown with
two numbers on right ashing,
representing MINUTES. Press
+or –key to change minutes.
(Pressing RIGHT ARROW key will
return to YEAR setting at step #2.)
8. Press RETURN/ENTER key to
proceed to next programming
function, or allow controller to
return to idle mode.
Setting Flush Sequence
Start Times
1. Press RETURN/ENTER key until
CLOCK icon is displayed.
2. The START TIME will be displayed
ashing, along with the program
letter (A, B, or C) and start time
number (1, 2, 3, or 4) in the upper
left. Up to 4 different start times
can be set for each program.
3. Use +or –key to change START
TIME for program displayed. Each
press of key will change start time
in 15-minute increments.
4. Press RIGHT ARROW key to
add an additional START TIME
to program displayed. The start
time number is shown in upper left
corner of display.
5. Press PRG key to add START
TIME to a different program.
6. Press RETURN/ENTER key to
proceed to next programming
function, or allow controller to
return to idle mode.
Setting Flush Duration Times
1. Press RETURN/ENTER key until
HOURGLASS icon is displayed.
RUN TIME will be displayed
ashing. Also shown is program
letter (A, B, or C) and active station
number (always #1– all other
stations not used) on lower left
side of display.
4. To stop MANUAL FLUSHING
cycle press – key until time is
reduced to zero.
5. Press RETURN/ENTER key to
proceed to next programming
function, or allow controller to
return to idle mode.
NOTE:
– Pressing + or – key when
running in MANUAL FLUSH mode
will modify FLUSH TIME for that
station.
– Pressing the button when a
station is running in manual
watering will stop irrigation on the
current station and advance to the
next station.
– Pressing the button when a
station is running in manual
watering will stop the irrigation on
the current station and revert to
the previous station.
Turn System Off
To turn off controller, press RETURN/
ENTER key button until icon
resembling water spray and OFF
is displayed on screen. To return
controller to auto programming mode,
press RETURN/ENTER key. The
controller will immediately return to
auto programming mode and will
display time and battery life indicator.
NODE Quick Check
This circuit diagnostic procedure can
quickly identify “shorts” commonly
caused by faulty solenoids or when
bare common wire touches a bare
station control wire. To initiate NODE
Quick Check procedure:
1. From Idle Mode, press and hold
+, –, LEFT ARROW, and RIGHT
ARROW keys.
2. Display will show all segments.
Release keys.
3. Press + key to initiate NODE
Quick Check test.
4. Controller will then activate
ushing unit for 1 second to verify
operation.

4
HYDRO-GUARD® HG-8 Warm Climate Flushing System
Programming Unit
5
LEFT and RIGHT ARROWS –
move curser left or right, also go
back or forward one screen.
ON and OFF/+ and – /UP and
DOWN ARROWS – Used to set
ushing events on or off, move
selector up and down on screen, or
increase or decrease duration and
other values.
OK – press to make selection nal.
TBOS-II Handheld Home
Screen Menu
1. TBOS infra-red – accessible only
when connected to programming
interface via the IR cable: select to
connect handheld to programming
interface via infrared cable and
access programs on it, or to
transfer programs from handheld
to programming interface.
2. Templates (TBOS-II) – select
to program handheld without
connecting to programming
interface.
3. Settings – select to access and
set time, date, and various other
available user settings.
First Time Use
1. Press HOME key for three
seconds to turn on handheld.
2. Press RIGHT ARROW key or the
OK key to access “Settings”
3. Use DOWN ARROW to select
and set the following:
a) Date and Time
b) Contrast of the screen
c) Name of the handheld
controller (can be assigned to a
specic operator)
d) Language (English, French,
Spanish, Italian, Dutch,
Portuguese, Turkish, etc.)
HG-8 (Requires Handheld)
TBOS-II Programming
Instructions
The TBOS-II handheld uses
on screen prompts for intuitive
programming. It will control current
programming interface (T-2 – dark
gray case), as well as the previous
model of programming interface (T-1
modules programmed by the TBOS-
US handheld).
Features
• 1 to 24 possible ushing events
daily, or on selected days weekly,
365-day calendar
• Flush duration 1 minute to 12 hours
(1 minute increments)
• Preprogram and store up to 3
different schedules
• Rechargeable battery (low battery
indicator shows both handheld and
controller battery conditions) with
recharging adaptor (9-volt lithium
battery can be used in the built-in
programming interface)
NOTE: In that the handheld was
designed by its manufacturer
to program irrigation systems,
many displays use irrigation
terminology. In the following
instructions, in such cases the
equivalent ushing terminology is
shown in parentheses.
CAUTION: Leaving the infra-
red connector connected to the
built-in programming interface
can signicantly reduce the
battery life of the 9-volt batteries
in the programming interface and
the rechargeable battery in the
TBOS-II handheld.
TBOS-II Handheld Keys
HOME – press three seconds to turn
handheld on.
ABC – press to choose from three
available programs (to store a
program when preprogramming, or
uploading a program to controller).
Programming Flushing Schedule
There are two ways to proceed:
• select “TBOS-II infra-red” if IR
cable is connected to a TBOS-II
programming interface to access,
change or load programs there, or
• select “Templates (TBOS-II)” to
create or change programs stored
on the handheld to load onto a
programming interface at a later
time (IR cable not used).
NOTE: The home screen for
“TBOS-II infra-red” shows battery
condition for programming inter-
face and ON/OFF state of any
current operation in progress.
1. Press HOME key for three
seconds to turn handheld on.
2. Press RIGHT ARROW key or the
OK key to access “Settings”.
3. Use DOWN ARROW to select
“Templates” and press OK.
4. Use DOWN ARROW to select
“Programs” and press OK.
5. Use DOWN ARROW to select
“Watering Days” (Days to Flush)
and press OK.
6. Use UP/DOWN ARROWS to
select one of the following:
a) Custom Cycle (Week): use
RIGHT/LEFT ARROWS to move
to days of the week, use ON/
OFF keys to highlight days on
which to ush, then press OK to
conrm days when selections are
complete.
b) Even Days: to Flush on even
dates, press OK to set.
c) Odd Days: to Flush on odd
dates including 31st, press OK to
set.
d) Odd Days 31: to Flush on odd
dated except 31st, press OK to
set.
e) Cyclical: to Flush every “X”
days, set “X” using ON/OFF keys
(X=1 to 31), press OK to set; then
set start date “dd/mm/yyyy” using
ON/OFF keys, press OK to set.
!

6
HYDRO-GUARD® HG-8 Warm Climate Flushing System
Programming Unit
2. Once data receipt is complete
press RIGHT ARROW to move to
“Settings” menu.
3. From “TBOS-II infra-red” settings
screen select “Transmit” and
press OK again. When program to
be transmitted appears, press OK
to conrm.
4. To clear programs A, B, or C: from
”TBOS-II infra-red” welcome
screen, use DOWN ARROW
to select “Clear Programs”
and press OK, then select type
of program to clear and follow
prompts.
5. To check programs A, B, or C:
from ”TBOS-II infra-red” welcome
screen, use DOWN ARROW to
select “Programs” and press OK,
then select what is to be checked
and follow prompts.
Manual Flushing
Using TBOS-II handheld on the T-2
built-in programming interface (dark
gray in color).
NOTE: Manual start cannot be
initiated if there is no program in
the programming interface.
1. To start manual ushing from
”TBOS-II infra-red” welcome
screen.
a) Use DOWN ARROW to select
“Manual Watering” (Manual
Flush) and press OK,
b) Select “Start Valve” (Open
Control Valve) then using ON/OFF
keys select “Valve 1” and press
OK,
c) Use ON/OFF keys to set the
manual Flush Time (1 minute
to 12 hours) and press OK to
conrm. Flushing will start after a
four (4) second delay.
7. Use LEFT ARROW to navigate
back to the program “Settings”
menu.
8. Select “Start times”, press OK to
set.
9. Use ABC to select program to
be set up.
a) Set hours and minutes for
each start time (up to 8 per
program) using ON/OFF keys,
press OK to set each (hours are
indicated using 24 hour clock).
[When exiting this screen, start
times will automatically sort into
chronological order.]
10.Use LEFT ARROW to navigate
back to the program “Settings”
menu.
a) Use DOWN ARROW to select
“Valve Run Times” (Flush
Duration), press OK to set.
NOTE: Although six valves may
be shown on screen, only Valve
1 is used to manage the Hydro-
Guard®unit.
b) Use ON/OFF keys to select
program A, B and/or C (one or
more can be assigned).
c) Then use ON/OFF keys to set
Flush duration (hours and/or
minutes) for program just set, use
LEFT/RIGHT ARROW keys to
move between hours and minutes
and + and –keys to set times
(1 minute to 12 hours), press OK
to set.
Transmitting Time, Date and
Programs to Programming
Interface, Clearing/Checking
Programs, Manual Start
Connect handheld to programming
interface using IR cable.
1. To transmit: from home screen,
use DOWN ARROW to select
“TBOS-II infrared” and press OK.
TBOS-II handheld will receive
data (settings) from built-in
programming interface.
Stop Manual Flush Sequence
1. Reconnect IR cable to built-in
interface, then hold down HOME
key on handheld.
2. Use RIGHT ARROW to select
“TBOS-II infra-red” menu and
select “Manual Watering.”
3. Select “Cancel Irrigation” to
cease the manual ush sequence.
Communication Failure:
Possible Causes /Solutions
1. The built-in programming
interface’s battery is low or out of
power or the rechargeable battery
in the Handheld Programmer
is low or out of power; replace
battery in interface and keep
rechargeable battery fully
charged.
2. There might be a problem with a
connection or solenoid. Perform
an electrical system check of
wiring and solenoid.
NOTE: The built-in interface’s
internal memory lasts only 3
minutes. Any time the battery
within the Programming interface
fully discharges, it is necessary
to plug the Handheld Programmer
directly into the interface and
reprogram the Unit. While
repeating the programming steps
is only a minor inconvenience, a
proactive approach to battery
maintenance will serve to alleviate
the frequency with which these
steps must be completed.
For all other programming
questions, please refer to the
Hydro-Guard®Programming Guide.
If the information you require is not
available therein, please contact
Hydro-Guard®Customer Service at
877.864.8500.

HG-8 DISASSEMBLY AND REASSEMBLY INSTRUCTIONS
the handheld to the antenna on the
controller interface mounted inside of
the device. Using the programming
keys of the handheld run a 2 minute
manual ush sequence.
NOTE: Plunger inside solenoid
should be down when running
and up when off.
4. To prevent the loss of the solenoid
plunger and spring, place an object
or have a nger over the plunger
of the solenoid. Allow the plunger
enough space to kick out of the
solenoid body into the object or
nger hovering over it.
5. If test is successful, return the
ush/meter assembly to its operating
position below grade.
6. Return insulation pad and
cast iron meter lid to their proper
positions.
If everything checks out, the
electrical system is in working
order.
Valve Disassembly and Check
1. Remove six (6) bolts from top
cover.
2. Slowly pull cover off the valve.
3. Remove rubber diaphragm and
inspect for holes or worn areas.
4. Be certain to avoid contacting
the EPDM rubber diaphragm with
pipe putty. Pipe putty can cause the
rubber to thin out and leak.
5. Remove the valve screen plug on
the lower half of the valve body. Be
careful not to exert too much force
when pulling plug out.
6. Check for debris in the valve
screen on the inlet side with the
lower half of the valve body by
removing the valve screen plug.
HYDRO-GUARD® HG-8 Warm Climate Flushing System
Diassembly/Reassembly Instructions
7
Although the Hydro-Guard®HG-8
Warm Climate Sub-Surface Unit was
delivered completely assembled, it
may be necessary and/or desirable
to disassemble portions of the Unit,
or the Unit in its entirety, in order to
allow for required service and
maintenance. If disassembly is
necessary, please follow the
directions below. Always close the
curb stop before working on the unit.
Disassembly
1. Shut off water supply to the unit
and remove the green housing
cover.
2. Remove the composite or cast
iron lid of HG-8 protective ground
sleeve.
3. Remove foam insulation pad.
4. Backup to stress point then
push down on the camlock
release handles to disengage the
camlocks prior to lifting the ushing
components out of the device.
5. Using the lifting holes and/or lifting
strap in the steel platform, raise
and remove the ushing system
assembly out of the meter box.
6. Modular design of valve and
double check valve allow for service
to be completed without removal of
the devices’ bodies from the piping
assembly.
Electrical System Check
1. Pull internals of HG-8 out of PVC
in-ground protective housing.
2. Unscrew solenoid from valve–
be careful to not drop the solenoid
plunger and spring into in-ground
housing.
3. Using the Node Controller, run a
2 minute manual ush seequence.
Or using the TBOS-II handheld,
connect the infrared connector of
7. Return valve plug to its proper
location when debris screen is
cleared.
8. Replace the top cover back onto
the diaphragm – make sure to line
up the openings in both.
9. Match up the top cover of the
valve with the bottom portion.
The arrows have to align on both
portions.
10. Replace the bolts and tighten
down.
WARNING: Avoid overuse
of pipe sealant and never allow
sealant to come into contact
with EPDM rubber diaphram.
Reassembly
1. If any disassembly has been
conducted of the control valve and/
or double check valve, verify that all
bolts are properly tightened. Check
assemblies for leakage prior to
lowering ushing/metering assembly
back into position below grade.
2. Using lifting holes and/or lifting
strap on steel plate, lower ushing
assembly below grade by slowly
lowering the steel frame to the lower
part of the in-ground protective
housing (DO NOT apply excessive
force to assembly). Use Guide in
meter box to allign internols.
3. Once lowered back into the
pretective ground sleve, lock the
internols in place by pulling up on
camlock handles.
4. Turn water supply to the unit
on. Using the controller, run a two
minute manual ushing procedure
to conrm all components are
operational.
5. Return insulation pad and lid to
their proper location.
!
TOOLS NEEDED: Philips screwdriver, at-head screwdriver, HG-20087 T-handle wrench

HYDRO-GUARD® HG-8 Warm Climate Flushing System
Troubleshooting
8 9
• Run a manual ush and conrm
the solenoid plunger is kicking out
and pulling back in by listening for
a click.
• Check to make sure the ow
control knob is open on the valve.
Check the pipes for obstructions.
Check the valve for debris and/or
damage.
The Hydro-Guard®Unit will not
shut off:
Possible Causes
• The solenoid is stuck in the open
position or debris is interferring with
the plunger.
• Batteries weak or dead.
• Connection loss from battery box to
solenoid.
If your Hydro-Guard®Unit does
not activate:
Possible Causes
• Water pressure off or low.
• Batteries weak or dead.
• Connection loss from controller to
solenoid.
• Solenoid not working properly.
• Obstruction in ow of water.
• Obstruction in double check valve.
Try this Correction
• Check if curb stop is open.
• Change batteries.
• Check connections for corrosion,
breaks, or lack of connection.
• Check backow preventer (follow
manufacturer’s instructions).
• The solenoid is loose or there is
debris in the adapter.
• There is a hole in or debris around
the diaphragm.
Try this Correction
• Run a manual ush for 2 minutes.
• Change batteries.
• Check connections for corrosion,
breaks, or lack of connection.
• Check the adapters and solenoid
for debris – Run the electrical
systems check.
• Refer to valve troubleshooting for
possible corrective measures.
TROUBLESHOOTING THE PROGRAMMER
TROUBLESHOOTING THE UNIT
pRoBlEM caUsE solUtion
Controller does not ush Water at main water supply is Check main supply valve
as desired shut off
Battery dead Replace battery
Controller set to OFF Set controller to desired program
Controller improperly programmed Check program and clock settings
Blank display Battery dead Replace battery
Water does not turn off Overlapping programming Review all programming and edit
any program that is in conict with
desired off schedule
Clear all programming in memory
and reset
Programmer not communicating Check programming
Run Manual On/Off with solenoid
removed from valve (hold nger or
object over solenoid plunger to
prevent plunger from dislodging from
solenoid body
Check wiring for damage and
connectors to ensure proper con-
nection (red to red & black to black)

9
HYDRO-GUARD® HG-8 Warm Climate Flushing System
Upgrades & Battery Replacement
Dechlorination
The Hydro-Guard®HG-8
Warm Climate Unit is equipped
with a dechlorination system.
Dechlorination takes place as a
portion of the discharged water
passes through a housing containing
either sodium sulte or ascorbic
acid tablets. This action creates a
concentrated dechlorination solution
that then mixes with the non-directly
treated portion of the discharge to
effectively dechlorinate the entire
discharge volume.
S.M.A.R.T. Monitoring and Flush
Management
The Hydro-Guard HG-8 can be
upgraded to include a S.M.A.R.T.
controller and a variety of water
quality sensors. The S.M.A.R.T.
equipped HG-8 will allow a utility to
The following is a brief overview
and introduction to Hydro-Guard®
Options.
Integrated Sample Station
The HG-8 Warm Climate Sub-
Surface Discharge Unit, features
a Sample Port quick connect that
allows the end user to collect a
sample from the HG-8 installation
site. To collect a sample from the
sample quick connect the HG-
S116 Portable Sample Valve will be
required. (Recommendation: one
HG-S116 per every ve HG-8 units)
You may wish to run a brief manual-
mode ush prior to the collection in
order to ensure water indicative of
the main-line water quality is being
sampled. Generally a two-minute
ush is sufcient. Track your residual
levels and alter ushing frequency
and/or duration in order to maximize
water conservation.
remotely monitor, in real-time, the
water quality at a specic ush point
and automatically initiate a ush
event when water quality conditions
warrant.
The Hydro-Guard®S.M.A.R.T.
ushing system:
• Monitors chlorine levels (total or
free).
• Flushes distribution line when
residual disinfectant drops below
acceptable levels.
• Monitoring of pH, ow, temperature
or turbidity available.
• Two-way real-time communication
via cellular, wi, ethernet or
BlueTooth®.
HYDRO-GUARD®FEATURES, UPGRADES AND SAMPLE COLLECTION
integrated T-2 programming
interface. Pull the battery box out
of the watertight housing. Replace
9-volt battery with a 9-volt lithium
battery.
b) HG-8 Built-In (NODE) –
Unscrew cap from bottom of
NODE programmer housing.
Insert two 9-volt alkaline batteries.
Tighten cap completely to ensure
a water tight t.
1. Remove composite or cast iron lid
and insulation pad.
2. Locate the controller and its
battery compartment.
3. Be sure to tighten battery
compartment cap securely before
returning unit to service.
4. Programming
a) HG-8 Removable (T2) –
Unscrew the grey cap off
the watertight housing of the
5. Place the battery back into
the watertight integrated T-2
programming interface making
certain to tighten the screw-on lid
until snug.
6. Return the internals of the HG-8
to its proper location.
7. Return the insulation pad and lid
to their proper locations.
BATTERY REPLACEMENT

11
HYDRO-GUARD® HG-8 Warm Climate Flushing System
Parts
10
REPLACEMENT PARTS
1
2
4
5
10
13
9
11
14
7
12
6
8
3
15
iD DEscRiption
1 Valve Box
2 Curb Stop
3 Valve Shut-off
4 Installation Guide
5 Male Camlock
6
Camlock Release
7 TB0S-11 Controller Interface
8 Top Support Plate
9 Support Frame
10 Lower Support
11 Dechlorination System
12 Female Camlock
13 2” Double Check Valve
14 Sample Quick Connect
15 Support Riser