Rain Bird HN-G-01 Filter Series User manual

NOTICE
Changes or modications not expressly approved by Rain Bird
could void the user’s authority to operate the equipment.
WARNING
It is extremely dangerous to open the lter, or control tubing
while under pressure. Always depressurize before performing
any maintenance or troubleshooting.
HN-G-01/ 02 Filter Series
Manual
Rain Bird Corporation
6991 East Southpoint Rd.
Tucson, AZ
85756
D42056

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1. Introduction
Congratulations for purchasing the HN-G automatic self-cleaning lter. Rain Bird lters are being used in various irrigation applications as
well as industrial water applications. The HN-G lter is easy to install, does not require special skills or tools to operate and is Ideal for ltering
out silt, scale, sand, rust and dirt from a variety of irrigation water sources.
NOTICE
PLEASE READ THE INSTRUCTIONS BEFORE INSTALLING THE HN-G FILTER.
1.1 Models
This document relates to multiple models of the HN-G lter system, sections that relate to specic models are indicated as such.
1.2 In the Box
Please check that you have received the following items:
• 1x Filter Assembly:
- 1x HN-G-01 Filter with 1”Inlet, 1" Outlet and 1” Drain valve assemblies attached
or
- 1x HN-G-02 Filter with 2”Inlet, 2" Outlet and 1” Drain valve assemblies attached
• 1x Hydraulic Piston with 1/4" plastic tube
• 1x Quick Start Guide https://www.rainbird.com/nh-lter
• 1x Backwash Controller Unit (HN-G-01-1-XXX, HN-G-02-1-XXX models only)

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1.3 Overview Filter Components
HN-G models are automatic, self-cleaning screen-type water lters. The ltration system consists of a lter body, hydraulic piston, lter
screen, Self-Clean mechanism and drain valve.
Piston
Piston Shaft
Piston O-Ring
Filter Cover O-Ring
Plate Seal
Screen O-Rings
Inlet Disc Seal
Housing
Inlet Disc
Inlet Bearing
Filter Screen
Plate
Clamp
Cover
Hydraulic Motor
Collector Assembly
1/4" Tubing
Inlet
Outlet
1.4 Operation
Pressurized water enters the lter inlet and travels through a lter screen where contaminants are ltered out. The clean water then
exits through the outlet .
The build-up of contaminants on the lter screen creates a dierential pressure across the lter. Based on a preset Dierential Pressure (DP)
programmed into the Backwash Controller (HN-G-01-1-XXX, HN-G-02-1-XXX models only), the drain valve will open and the backwash of the
lter screen will take place. After 7 seconds, the drain valve is closed to resume normal water ltering. A backwash of the lter screen can
also be initiated by a programmable timer.
The minimum pressure required for Self-Clean is 40 PSI (2.8 Bar).
NOTICE
Large particles may prevent the self cleaning mechanism from working properly. In that case, we recommend installing a coarse
strainer (10-14 mesh) prior to the lter.

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2. Installation
2.4.1 Location:
IMPORTANT
The HN-G lter should be installed vertically
1. Allow a minimum clearance of 10”(ten inches) above the HN-G for safe removal of the lter cover.
2. Locate the HN-G lter as close to a drain as possible. This will maximize the eciency of the automatic self-cleaning.
3. An AC to 12VDC power source is required for the Backwash Controller if batteries
are not used (HN-G-01-1-XXX, HN-G-02-1-XXX models only).

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2.4.2 Installation requirements
When installing the ¼” plastic tubing into the
appropriate ttings – push the tubing in hard, it
should go in about a ¼”. It should be tight into the
tting and does not come out when you pull on it.
Outlet
(to irrigation)
Drain
(
to drain)
Inlet
(from pump)
1.25”+
The drain pipe should be a minimum of 1.25”in
diameter. The length of drain pipe to the drain should
be as short as possible, with no more than two
elbows. Any restrictions in the drain pipe will reduce
the self-cleaning eciency of the lter.
The HN-G lter cover can be rotated to best t existing
plumbing. To rotate the cover, release the clamp,
rotate the cover, and close the clamp.
Unions are required for ease of maintenance and in
order to make installation easier. With unions, at all
recommended spots, the lter may be removed for
service and any threaded connections can also be
easily accessed if any of these need to be tightened
up or resealed due to movement during shipping or
installation.
Install an isolating valve (not supplied) between:
• Inlet and the water supply.
• Outlet union and the irrigation system.
Gauges on the inlet and outlet are highly
recommended to be able to monitor pressure
dierential visually.
Drain should not discharge under water level, or in
any way that would provide back pressure, as this will
impede performance
The drain needs to be unobstructed.
If the drain line is longer than 20 feet then it should be
up-sized to 1.5” PVC.
All plumbing (inlet, outlet and drain) should be
supported so stress is not transferred to the lter.
It is highly recommended that
any PVC ttings (including the
ones included with the lter) in
outdoor installations are painted
to block UV exposure from the sun.
Enclosed installations with no sun
exposure do not required the PVC
to be painted for protection.

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3. Mechanical Installation
Piston
Filter assembly
1.
O-ring
2. 3.
3.4.1 Piston Installation
1. The Filter unit ships without the piston installed
2. Ensure that the o-ring is in place on the threads of the Piston. Push the
piston into the main body of lter. Ensure that the push to connect tting
at the top of the piston lines up with the 1/4" black tubing.
3. Push the 1/4" tubing into the push to connect tting at the top of the Piston.
3.4.2 Backwash Controller installation
1. The controller is mounted to the lter and pre-programmed
(HN-G-01-1-XXX, HN-G-02-1-XXX models only).
2. If relocation is necessary, cut the strap and remount to a suitable location. Connect a length
of 5/16" plastic tube (not supplied) into the HP (high pressure) and LP (low pressure) ttings.
3. Read the instructions in the following Filtron 1-10 (DC) Manual
3.4.3 Turning On Water Supply:
1. Ensure Drain pipe is securely in the drain
2. Carefully open the isolation valve connected to the HN-G Inlet
3. You are now lling the HN-G and charging the water system.
4. Check the system for leaks – If there is a leak that needs xing - close Inlet and outlet isolation valves.
Follow the steps 5.1.1 De-Pressurize System to release the pressure and empty the HN-G. Fix the
leak. Re-connect the Low Pressure (LP) 5/16”plastic tube and repeat this section.
This section relates to the following models only: HN-G-01-1-XXX, HN-G-02-1-XXX
3.4.4 Power Connection
1. WHEN READY – connect the controller to the power source
2. Follow the instructions in the Filtron 1-10 manual if programming modications are required.
Outlet
(to irrigation)
Inlet
(from pump)

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This section relates to the following models only: HN-G-01-1-XXX, HN-G-02-1-XXX
4. Electrical Installation
4.4.1 If 110 VAC is Available
Plug in AC power adapter.
IMPORTANT
If installed outdoors power adapter must be plugged into a weather protected outlet.
4.4.2 If Battery Powered
1. Remove the top gray cover (push up the sides over the indent).
2. Remove the black battery tray and install the 4x “D Cell” batteries as shown.
3. The controller will come to life. It goes to sleep quickly, holding down any of the three lower buttons for a few seconds’ wakes it back up.
4. Press the far right (M) button on backwash controller to test that the installation
has been successful, a Backwash sequence should occur.

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5. Maintenance
This lter, while automatic in function, is not maintenance free. It is expected that the screen will require pressure washing on a periodic
schedule to remove contaminants that have stapled into the screen. Depending on the contaminant, the frequency can vary from once
a week to twice a year. This schedule will have to be determined based on the eectiveness of the backwash on the contaminants being
ltered. The lter must be de-pressurized to remove the screen.
5.1 Cleaning Filter Screen
The HN-G Filter Screen should be inspected every 3 months for wear and tear and be cleaned using a pressure washer directed alternately
on the outside and inside of the screen (3-4 times each). If the Filter Screen shows signs of damage, it should be replaced. Periodic cleaning
of the lter screen is necessary for removal of trapped particles.
WARNING
It is dangerous to open the lter while under pressure
De-Pressurizing the System
1. Close Inlet and Outlet isolation valves .
2. Perform Manual Backwash from the Filtron 1-10 Backwash controller by pressing the M
button or from the irrigation controller (HN-G-01-2-XXX HN-G-02-2-XXX models only).
3. Verify pressure has been released running a second backwash and observing no
backwash ow, or by checking the reading on the pressure gauges (if installed).
4. (HN-G-01-1-XXX HN-G-02-1-XXX models only) - Remove Low Pressure ⁄”plastic
tube from the Inlet to release the pressure and drain the HN-G lter.
5. (HN-G-01-2-XXX HN-G-02-2-XXX models only) - Remove the ¼" Tubing from lter ush port.
6. Disconnect the drain pipe from the Drain valve at the union connection.
5.1.1 Disassembly
7. Disconnect the ¼” Plastic Tubing connecting the Piston to the drain outlet.
8. Release and remove the Clamp .
9. Carefully remove the lter Cover .
10. Carefully hold and pull up on the Hydraulic Motor .
11. This will remove the collector assembly, giving you access
to the Filter Screen , and Inlet Disc .
12. Remove the Filter Screen .
13. Inspect and clean the Filter Screen , using a pressure washer as necessary.
14. Inspect and remove any foreign objects or large particles from
the Collector Assembly and the Housing .
5.1.2 Lubrication
15. Grease (silicone recommended) all rubber parts: , , , , .
16. Carefully unscrew the Piston from the Cover , clean and grease Piston Shaft
(silicone grease recommended). Make sure the Piston Shaft moves freely.
17. The Piston Shaft should be cycled in and out a few times to get the grease distributed
to the inner O-ring seal. Two applications of grease and cycling is adequate.
18. Clean and grease the Piston O-Ring on the Piston .
19. Replace the Piston on the Cover , hand tighten only, no tools.
5.1.3 Re-assembly
20. Replace the Filter Screen into the Inlet Disc

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21. Carefully replace the Hydraulic Motor and Plate into the Filter Housing , ensuring that
the Piston Shaft is inserted into the hole in the middle of the Inlet Disc .
22. Push down rmly on the Plate . When correctly in place the central collar of the Plate will be ush with
the top of the Housing . Make sure the Shaft can move up and down, and rotate / spin freely.
23. Ensure the rubber Filter Cover O-ring is in place in the Cover
24. Replace the lter cover assembly on to the lter Housing , rotating the Cover slightly to seat the O-Ring
25. Replace and fasten the Clamp
WARNING
Use caution when fastening the clamp, avoid injury to your ngers
26. Re-connect the Drain pipe to the Drain valve assembly
27. Reinstall the Piston , making sure the O-Ring is in place on the Piston thread. Rotate it clockwise
by hand only – as per 3.4.1 Backwash Controller Installation, do not use any tools.
28. Re-attach the ¼” Plastic Tubing into the Piston – push in hard.
29. Follow instructions in – 3.4.2 Turning On Water Supply
30. Follow instructions in – 3.4.3 Power Connection
5.2 Piston Maintenance
The piston shaft requires lubrication on a quarterly schedule.
1. De-pressurize the sytem
2. Remove the ¼”Tubing from the push to connect tting on the top of the Piston .
3. Unscrew the Piston (counter clockwise)
4. A silicon grease should be applied to the Piston Shaft which should be cycled in and out a few times to get
the grease distributed to the inner O-ring seal. Two applications of grease and cycling is adequate.
5. The Piston may drip water from the lower vent hole. This is normal during the course of operation.
If the lower vent hole continually ows water, the piston should be replaced.
5.3 Winterization
If you have unions on the inlet and outlet, storing the HN-G Filter in a room that is above freezing (and will not freeze) is the best way to
winterize it. This would minimize the thoroughness required of the steps below (but still recommended before storage).
1. Run a cleaning cycle by pressing the M button on the Filtron 1-10 (HN-G-01-1-XXX, HN-G-02-1-XXX models) or
from the irrigation controller ( HN-G-01-2-XXX, HN-G-02-2-XXX models), de-pressurize, empty completely.
2. Empty the Piston of excess water by removing it and then cycling the Piston Shaft in and out. Lubricate the piston
shaft with silicone grease and cycle the shaft in and out a few times while adding grease each time (the idea is to
get the grease to the lip of the internal seal). Store the piston in a plastic zip lock so the water does not completely
evaporate (keeps the seals lubricated). It is best to store the piston inside and block o the hole in the lter cover.
3. Blow out all of the ¼” and ⁄” control tubing.
4. Gently blow out each side of the DP switch on the controller (remove the ⁄”tubing at the red and black connectors).
5. Unscrew the solenoid on the 1”Rinse valve (PESB Scrubber) and make sure that any excess water is removed from the diaphragm

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area and solenoid. It is usually easier to just unscrew the top of the valve cover and drain the diaphragm area that way.
Manually cleaning the Filter Screen element before storage is also a good idea. That will prevent debris from drying on the screen and
becoming dicult to remove the following season.
This section relates to the following models only: HN-G-01-2-XXX HN-G-02-2-XXX
5.4 Backwashing without a Filtron 1-10 Controller
For lters that are ordered without a Filtron 1-10 controller, programming of the backwash is based on time o of the irrigation controller.
The irrigation controller must be able to program station run times in seconds (or a 24 VAC one shot relay capable of delivering a 7 second
signal to the lter must be added).
The backwash time (station run time) should be programmed for 7 seconds. If adequate ow and pressure is not available to backwash
the lter and run irrigation, the lter must be scheduled to run alone (without irrigation) to ensure all ow and pressure can be utilized for
backwash.
Since there is no dierential pressure switch on this model, an adequate amount of backwash cycles will have to be programmed to ensure
pressure in the system is maintained. It is recommended that the lter is ushed before the irrigation cycle, at least once during the irrigation
cycle (may take more), and then after the irrigation cycle.

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This section relates to the following models only: HN-G-01-1-XXX HN-G-02-1-XXX
6. FILTRON 1-10 (DC) Manual
The Filtron 1-10 requires minimal to no user programming, the following sections are only related to site specic programming
requirements.
6.1 Features
• Modular backushing controller for automatic lters of 1 to 2 stations.
• DC controller which also comes with an AC adapter to 12 VDC.
• The DC model can be powered either by four 1.5V“D” Batteries or 12v DC (via the AC adapter) and it activates up to 2 wired DC latch-
ing solenoids. The voltage for the solenoids switching is boosted by a charge pump.
• Flushing cycles may be triggered either by time or by the embedded electronic DP sensor reaching the set point, or by a dry contact
signal from an external DP sensor.
• Endless looping problems can be eliminated by detecting repeated consecutive cycles passing beyond a predened limit.
• The unit can optionally handle a Pressure-Sustaining / Main valve, and an Alarm output.
• The unit is equipped with a customized LCD display and key board.
• The unit counts separately the number of ushing cycles triggered by DP, by time and manually.
6.2 How to program the controller
The controller is equipped with an LCD display and 4 keys as displayed below. When the unit is left untouched for a minute the display
is switched o and the only life signal is given by a beep sound that can be heard every 20 seconds. The beep can be disabled in the
programming section. Holding down any of the keys for a few seconds will bring the screen back to life.
The actual DP value.
Availability only
when the built in
electronic DP is used
The DP Set-Point
Available only when
the built in electronic
DP is used
Manual button
The desired ushing
time per station
Enter button
The desired ushing
mode. Contains
either the ushing
interval or the letters
"dp" when the
ushing is triggered
by dp only
The screen consists of several elds, some of them are editable and some of them are not. For inserting EDIT MODE the ENTER key has to be
pushed. The EDIT MODE is indicated by blinking of the characters at the currently editable eld. Each time the ENTER key is pushed again,
the next editable eld becomes editable and starts blinking. While in EDIT MODE the “+” and“-“ keys can be used for changing the value
under focus. Pushing the ENTER key again will set the selected value to the current eld and move the focus to the next editable eld which
will start blinking. Once entering this process of passing through the editable elds, the user has no way back but by pushing the ENTER key
repeatedly, he passes through the chain of editable elds until arriving back to the FLUSH TIME eld, meeting no more blinking elds.

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Notice that before the rst use of the unit, it may be necessary to pass through the conguration process prior to dening the ushing
program in order to adjust the features of controller to the specic application. The conguration process is described below.
6.2.1 The chain of editable elds
Below is the chain of editable elds. The existence of the DP SET-POINT eld depends on whether the system contains a built-in electronic
DP or not.
Flush Time
Accumulations
DP
Accumulations
Time
Accumulations
Manual
DP Set-Point Flush Mode
6.2.2 The Flush Time
Flush Time defines the duration of the flushing time per station. The following options are selectable:
• 5-20 sec in steps of 1 sec
• 20-55 sec in steps of 5 sec
• 1-6 min in steps of 0.5 min
6.2.3 The DP Set Point
NOTE: The controller is pre-set to a 9 PSI differential pressure. This value can be adjusted up or down based on water quality and screen
size to adequately keep the screen clean. Lower differential pressure values will decrease the amount of contaminant that imbeds into the
screen, especially with finer screens. A balance between differential pressure and the backwash frequency must be established based on
site conditions. The lower the differential pressure, the more backwashes will occur. The higher the differential pressure, the harder the
screen will become to clean. Typical differential set point is generally set somewhere between 6 and 9 PSI.
At this field the user defines the pressure difference between the filter’s inlet and outlet that when reached, a flushing cycle will take place.
The DP set-point field will disappear if there is no Electronic DP connected. In this case the Digital DP input can be used.
Up to version 1.02 of the Filtron 1-10,
A non-zero value Set-point would have caused the controller to ignore the Digital DP input completely, but a zero Set-point would make
the Digital DP effective and cause the Electronic DP to be ignored.
Starting from version 1.03
A change was made so that a non-zero Set-point does no longer cause the Digital DP input to be ignored, but instead a closed contact
Digital DP input will cause the unit to keep on executing flushing cycles as long as the contact remains closed, ignoring the looping limit.
When
the DP contact reopens, the flushing stops right away without completing the running flushing cycle.
Starting from version 1.03 if there is no Analog DP connected or when the set-point equals zero the unit refers to the Digital DP in the
normal way, namely when the contact of the Digital DP is constantly closed it will execute consecutive flushing cycles until reaching the
Looping Limit and then declare an endless Looping problem.
When the pressure is expressed in BAR the range of values is 0.1 – 1.0 BAR.
When the pressure is expressed in PSI the range of values is 1- 15 PSI.
The closed Digital DP contact will be indicated by the symbol :

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6.2.4 The Flush Mode
The Flush Mode denes how the ushing cycles is triggered. The selectable options are as follows:
OFF - No ushing will take place
By time – In this case the ushing cycles will be repeated in a selected interval or will be triggered by the DP signal depending on what
happens rst. No matter how was the ushing cycle started the interval to the next cycle will start to be measured again after
each ending of a ushing sequence. The selectable intervals are the following:
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, 60 minutes
2, 3, 4, 5, 6, 8, 12, 18, 24, 72, 120 hours
dp – Flushing will be triggered by DP only.
NOTE
If the “+”and “-“ keys are pressed and held down simultaneously the “Flush Mode”eld will show the left time until next cycle, alternately
hours and minutes.
6.2.5 The Accumulations
The unit accumulates and displays the number of ushing cycles caused by DP, by time, or manually at each of the accumulation elds, the
“+” or “-“ keys may be used for clearing the accumulated value.
6.2.6 The Conguration
In order to enter into the conguration process press and hold down the ENTER key for at least 3 seconds.
The unit will detect how many“plug-in” boards (each of 2 outputs) are used in the particular case.
How will the outputs be allocated depends on the denitions made during the conguration process described below. The following rules
apply:
1. Backush valves will be allocated starting from output 1 and up.
2. The last backush valve can be cancelled and then its allocated output will be left unused.
3. Alarm output, Delay-Valve and Main-Valve when dened, will be allocated in this
order, right after the last backush valve (whether in use or not).
Example:
Assuming there are 3“plug-in” boards, this makes 6 outputs for use. If there are no Alarm-output, no Delay-Valve and no Main-Valve all the 6
outputs will be allocated for backush valves.
If additionally a Main-Valve is dened, the rst 5 outputs will be allocated for backush valves and output No 6 for the Main-Valve. Output
No 5 (of the last backush valve) can be canceled and left unused. If additionally a Delay-Valve is dened it will be allocated to output 5
right before the Main valve, leaving the rst 4 outputs for backush valves, and once again output No 4 (of the last backush valve) can
be canceled and left unused. If additionally an Alarm-output is dened it will be allocated before the Delay-Valve leaving only 3 of the rst
outputs for backush valves. No 3 can again be canceled.
During the conguration process the following features are dened:
Main Valve (sustaining
valve)
Yes/ No. When the answer is “Yes”the Pre Dwell delay between the Main Valve opening and the opening of
Station No. 1 can be dened.
The selectable delay steps are:
5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55 sec
1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, 5, 5.5, 6 min
Dwell time the delay between stations – can be set to 5, 10, 15, 20, 25, 30, 35, 40, 45, 50, 55, or 60 sec.
DP delay the delay during which the DP sensor reading is expected to remain stable before reaction – 5, 10, 15, 20, 25, 30,
35, 40, 45, 50, 55, 60 sec.

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Looping limit the number of consecutive ushing cycles triggered by the DP sensor before deciding that there is an endless
looping problem. The options are: 1-10 or“no” which means ignoring the looping problem.
Alarm Yes/No – allocating one output for alarm activation.
Delay Valve Yes/No – allocating an output for Delay Valve activation.
This is a special mode that enables passing through the list of outputs to see how each output was allocated.
Use the + key to change the “no”into “yes” and conrm by “Enter”, then keep using the + key to pass through the
list. At the bottom left corner the ordinal number of the output is displayed and its allocated function appears
in large letters at the center of the screen. Notice that the number of possible outputs that can be used is
always an even number since it results
from the number of “plug in”boards (each of 2 outputs) included.
However if the number of outputs needed is not an even number, 13 then the last valve allocated for ushing
may be canceled by use of the manual operations key.
Pressure units deciding about the units to be used for pressure measurement.
Selecting between BAR or PSI .
Calibration Zero calibration of the built in electronic DP sensor. While the sensor ports are disconnected select Calibration
= Yes.
Version display The last screen of the conguration supplies information about the software version of the controller. the
version consists of 4 digits like the following:
6.2.7 Handling Endless Looping problems
As explained above, endless looping problem will be declared when the number of consecutive ushing cycles triggered by the DP sensor
exceeds the“Looping limit” dened during conguration.
The fact that endless looping problem was detected will be indicated on the display and will cause the activation of the Alarm output,
additionally, the DP indication will no longer be considered as a trigger for ushing. The following ushing cycles will be triggered by the
interval count down only.
The problem will be considered as solved when the constant indication of the DP sensor will be removed.
6.2.8 Handling Low pressure
When a closed contact indication is received at the low pressure input of the controller, the P symbol will start to appear blinking at
the display. All activities will stop including the countdown to the next ushing cycle. If the low pressure happened while a ushing
sequence was in progress, when the low pressure condition terminates the ushing sequence will start from the beginning rather
than continue from the stop point.
Connecting the DP sensor to the lter system The DP sensor is connected to the lter system by 2 command tubes, the one which comes from
the lter inlet (High pressure) will be connected to the red point, and the one that comes from the outlet (Lower pressure) will go to the black
point. It is important to put a small lter of 120 mesh (not supplied) between the red point and the high pressure connection point.
6.2.9 Connecting the DP sensor to the lter system
The DP sensor is connected to the lter system by 2 command tubes, the one which comes from the lter inlet (High pressure) will be
connected to the red point, and the one that comes from the outlet (Lower pressure) will go to the black point. A small Finger Filter is added
to the High Pressure inlet Fitting to protect the digital DP Switch.
6.2.10 Low battery
The unit has two levels of low battery indication. At the rst level when the battery voltage drops to the rst level, the sign Low Battery
will start to appear at the screen. When the battery voltage drops further and reaches the second level, all outputs will shut down, the
screen will be cleared leaving only the low battery icon
6.2.11 Manual activation
A ushing sequence can be manually activated by the“MANUAL” key. When manually activated the hand icon will appear on the
display. The same key will be used for manually terminating a sequence in progress.

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A. Appendix
A.1 DC MODEL
The drawing below shows the wiring of the DC model of the controller.
Notice that:
1. The External DP sensor is optional and it is intended for use in cases there is no Embedded Electronic DP included.
2. The powering of the unit is by (4) D Cell Batteries or 110/ 220 AC to 12 VDC adapter or 12 VDC battery
3. The solenoids will be of 9-12 VDC.
A.2 HN-G - Controller Filtron 1-10
Programming with Rinse Valve only (No Sustaining Valve on Filter Outlet)
1. Press and hold ENTER for 3 seconds
2. MAIN VALVE – No
3. ENTER - Dwell – 05 seconds
4. ENTER - DP DELAY – 30 seconds
5. ENTER - LOOPING – 10
6. ENTER - ALARM – No
7. ENTER - DELAY VALVE – No
8. ENTER - VIEW OUTPUT – No
9. ENTER – Pressure - PSI
10. ENTER - BEEP – Yes / No (set to No to prevent sign of life beep every 20 seconds)
11. ENTER – back to operation
A.3 HN-G - Controller Filtron 1-10
Programming with Sustaining Valve on Filter Outlet
1. Press and hold ENTER for 3 seconds
2. MAIN VALVE – Yes
3. ENTER –1" lter = 5 seconds, 2" lter =10 seconds.
4. ENTER - Dwell – 05
5. ENTER - DP DELAY – 30 seconds
6. ENTER - LOOPING – 10
7. ENTER - ALARM – No
8. ENTER - DELAY VALVE – No
9. ENTER - VIEW OUTPUT – No
10. ENTER – Pressure - PSI
11. ENTER - BEEP – Yes / No (set to No to prevent sign of life beep every 20 seconds)
12. ENTER – back to operation
A.4 Operation
1. Press ENTER
2. Set FLUSH TIME to 7 seconds
3. ENTER – set DP to 09 PSI

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4. ENTER – FLUSH MODE – DP
5. Press ENTER 4 times to go back to operation (Accumulation Counters may be reset during these entries).
A.5 TECHNICAL DATA
Power source: 6v supplied by 4 x “D” size alkaline batteries.
or 12v DC dry battery or AC to DC plug in adapter
or 12v rechargeable battery with solar panel of 2 watts
Outputs : 12v DC latching solenoids.
DP: Embedded electronic analog DP sensor
or external dry contact DP sensor.
Pressure Sensor: Dry contact pressure sensor
Operating temperature: 0-60 °C.
A.6 Troubleshooting
A.6.1 Problem: Excessive pressure drop across the lter
Possible causes:
1. Filter Screen is clogged due to lack of pressure during Self-Clean
Solution
• Make sure water pressure during Self-Clean is at least 40 psi.
• Close the isolation valve on Outlet pipe of the HN-G
• Press the (M) button on the Backwash Controller
• HN-G will perform a backwash
• Re-open isolation valve on Outlet pipe of the HN-G-02
2. Filter Screen is still clogged.
Solution:
• Remove the Filter Screen and manually clean it. Follow instructions in Section 5a above
3. Wait Time between Self-Cleaning cycles is too long.
Solution:
• Adjust Interval timer in Backwash Controller
4. Problems with Solenoid/Backwash Controller Unit.
• Solution: Contact Rain Bird [e-mail]
A.6.2 Problem: Valve malfunction
Possible causes:
1. Ruptured Diaphragm
• Replace Diaphragm
2. Solenoid malfunction
• Replace Solenoid
3. Backwash Controller malfunction
• Solution: Contact Rain Bird [e-mail]

17
B. Appendix C (System Specication)
B.1 Estimate ow rate and record pressure
Place a 5 gallon bucket at the water source and allow it to ow without restriction into the bucket.
Time how long it takes to ll to the 5 gallon point.
Example
Volume of Bucket (in gallons) 5
x 60 =43 GPM
Time to ll bucket (in seconds) 7
Backwash requirements
A 1” lter requires 30 GPM at 40 PSI to backwash properly.
A 2” lter requires 40 GPM at 40 PSI to backwash properly.
If this ow and pressure for backwash can’t be maintained while irrigating, the ow to irrigation must be stopped (using a controlled outlet valve)
while the lter backwashes.
Static (and dynamic) pressures over 100 PSI require a pressure regulator.
B.2 Rank your water source
Flow is dependent on Water Source Quality and the micron size of the screen. The following chart denes the maximum ows allowable
based on Water Source Quality and screen micron size. Most applications will follow the Average, Poor or Very Poor lines. Water source
should be rated at worst case scenario if water quality varies during the year (such as algae blooms during summer). A general guide to
Water Quality is also shown below.
Good Average Poor Very Poor
Solids < 20 ppm < 40 ppm < 80 ppm < 110 ppm
Example Well Water, municipal
supply or equal. Clear lake water or equal River water. Brown or green water (mud/algae).
Contamination
Very little, 100% clear,
similar to drinking water
quality.
95% clear water, small
contaminants. No real
discolouration of the
water.
Light to medium
discolouration.
Heavy discolouration.
Medium algae, visible silt/
dirt etc.
Maximum Flow
Filter Size 1" 2" 1" 2" 1" 2" 1" 2"
Screen
size
400 micron
(47 mesh)
40 GPM
9 m3/h
100 GPM
22.7 m3/h
40 GPM
9 m3/h
100 GPM
22.7 m3/h
36 GPM
8.2 m3/h
55 GPM
12.5 m3/h
Not
recommended
35 GPM
8 m3/h
200 micron
(88 mesh)
40 GPM
9 m3/h
100 GPM
22.7 m3/h
37 GPM
8.4 m3/h
85 GPM
19.3 m3/h
33 GPM
7.6 m3/h
50 GPM
11.4 m3/h
30 GPM
6.8 m3/h
150 micron
(100 mesh)
40 GPM
9 m3/h
95 GPM
21.6 m3/h
33 GPM
7.5 m3/h
70 GPM
15.9 m3/h Not
recommended
40 GPM
9 m3/h Not
recommended
100 micron
(150 mesh)
30 GPM
6.8 m3/h
75 GPM
17 m3/h
25 GPM
5.7 m3/h
45 GPM
10.2 m3/h
Not
recommended

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C. Installation Example 1
How your lter is installed will depend on how your system is structured and the specic requirements of your site. This example illustrates
a stand-alone lter installation with minimal added components in discharge plumbing like what is located on a municipal feed water
source (or pumped water where the pump is located remotely).
Pipe support is attached to pipe with a pipe attachment.
* User to supply
Union fitting*
Piston
1” Hydraulic drain valve
Union fitting*
Union fitting*
Outlet (to irrigation)Inlet (from pump)
Drain (to drain)
Pressure gauge*
Pressure gauge*
Unions are required for ease of maintenance and in order to make installation easier. With unions, at all recommended spots,
the lter may be removed for service and any threaded connections can also be easily accessed if any of these need to be
tightened up or resealed due to movement during shipping or installation.
It is recommend to install PVC unions on the inlet, outlet and drain. The drain will be a 1” union. The inlet and outlet will be either 1”
or 2” unions depending on the model ordered. Unions will make servicing and winterizing the lter much easier. A bypass loop with
bypass valve is also recommended so that the lter can be bypassed during service if required.
Follow standard PVC solvent welding procedure to plumb the lter into the irrigation line.
The Inlet, Outlet and Drain line pipes need to be supported so that no stress is transferred to
the lter. Pipe support is attached to pipe with a pipe attachment.

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D. Installation Example 2
This example illustrates a lter installation in discharge plumbing located on the output of a pump and also a controlled outlet valve on the
discharge of the lter to accommodate low ow rate applications where all pressure and ow must be utilized for backwash (the controlled
outlet valve can also be applied in installation example A and C).
Pump
Isolating valve*
Isolating valve*
Wye strainer*
Pressure gauge*
Piston
1” Hydraulic drain valve
Union fitting*
Union fitting*
Outlet
(to irrigation)
Inlet
(from pump)
Drain
2” Sustaining valve*
Pressure gauge*
Union fitting*
* User to supply

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E. Installation Example 3
This example illustrates a bypass conguration.
Union fitting*
Union fitting*
Pressure gauge*
Pressure gauge*
Piston
1” Hydraulic drain valve
Union fitting*
Isolation valve*
Outlet (to irrigation)Inlet (from pump)Drain (to drain)
Bypass valve*
Isolation valve*
* User to supply