Netafim SANDSTORM User Manual
V 001.01 - MARCH 2018
USER MANUAL
SANDSTORM
™
METAL SINGLE-/DOUBLE-CHAMBER
MEDIA FILTER
© COPYRIGHT 2018, NETAFIM™
NO PARTS OF THIS PUBLICATION MAY BE REPRODUCED, STORED IN AN AUTOMATED DATA FILE OR MADE PUBLIC IN
ANY FORM OR BY ANY MEANS, WHETHER ELECTRONIC, MECHANICAL, BY PHOTOCOPYING, RECORDING OR IN ANY
OTHER MANNER WITHOUT PRIOR WRITTEN PERMISSION OF THE PUBLISHER.
ALTHOU GH NETA FIM™ TAKES THE GREATEST POSSIBLE CARE IN DESIGNING AND PRODUCING BOTH ITS PRODUCTS
AND THE ASSOCIATED DOCUMENTATION, THEY MAY STILL INCLUDE FAULTS.
NE TAFIM™ WILL NOT ACCEPT RESPONSIBILITY FOR DAMAGE RESULTING FROM THE USE OF NETAFIM'S PRODUCTS
OR THE USE OF THIS MANUAL.
NE TAFIM™ RESERVES THE RIGHT TO MAKE CHANGES AND IMPROVEMENTS TO ITS PRODUCTS AND/OR THE
ASSOCIATED DOCUMENTATION WITHOUT PRIOR NOTICE.
FOREIGN LANGUAGES
In the event that you are reading this manual in a language other than the English language, you
acknowledge and agree that the English language version shall prevail in case of inconsistency or
contradiction in interpretation or translation.
CONTENTS
Introduction
Aim of this manual
Safety instructions
Tools required for maintenance and troubleshooting
Flange connection
Filtration system components and structure - single-chamber
Filtration system components and structure - double-chamber
Initial operation and adjustment
Maintenance
Once a week
Once every three months
At the end of the irrigation season
At the beginning of the next irrigation season
Algae and bacterial growth control
Replacing the media
Replacing the batteries in the BackFlush controller
Paint retouching of the tanks and manifolds
Cleaning the secondary filter
Troubleshooting
If the pressure difference across the filtration system is over 0.7 bar (10.15 PSI)
and the flushing cycle does not reduce it
If the flushing cycle does not start but the controller is initiating the flushing signal
and the solenoids are reacting (“clicking”)
If the media is running out through the backwash manifold during backwash
If media is running out through the outlet manifold during filtration
Replacement parts
Tanks - single-chamber
Tanks - double-chamber
Manifold sections
Manifolds accessories
Grooved couplings
Support legs
Control kit
Backwash 3-way hydraulic valve 2"
Backwash 3-way hydraulic valve 3"
Backwash 3-way hydraulic valve 4"
Backwash flow-control valve
BackFlush controller
DC actuator valve
Air Valve
Inlet adaptor pipe
Secondary filter
Warranty
4
4
5
5
6
7
8
10
10
11
12
13
14
15
16
16
18
18
18
19
20
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24
25
25
26
27
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4 SANDSTORM™ SINGLE-/DOUBLE-CHAMBER USER MANUAL
Aim of this manual
The aim of this manual is to provide the user with general instructions for operation, maintenance and
troubleshooting of any configuration of the SandStorm™ metal single- or double-chamber media filtration
system.
All system components are shipped to the site packed in pallets and boxes with installation drawings, user
manual, and a packing list.
NOTE
This manual describes the operation, maintenance and troubleshooting processes of a generic
SandStorm™ filtration system and must be used in unison with the drawings supplied with the system.
Safety instructions
Before handling any part of the system, carefully read the instructions and act accordingly.
NOTE
The maximum working pressure of the filtration system is 8 bar (116 PSI). Make sure the pressure
at the inlet of the filtration system is not higher. (For filtration systems made to order, see the
maximum working pressure in the Product Order).
Check and make sure the pumps and valves do not exceed the tolerances of the system and match the
requirements of the system pressure and flow-rate specifications (see the documentation supplied with
the system).
WARNING
Do not perform maintenance operations or open filter ports before the pressure in the system is
fully released. For draining purposes, open any valve downstream from the filtration system until
the pressure is fully released. Check the pressure gauge to be sure it is at 0 before proceeding.
TIP
If a valve downstream from the filtration system is not available
for pressure release, you can install a manual valve on the lower
2" socket of the outlet manifold end-cap.
Electrical connections and wiring must be done by an authorized electrician only.
Be sure that prior to any maintenance procedures, all electrical connections to the system are unplugged
(AC controller, pumps, etc.).
Do not apply excessive force or pressure on the filtration system components.
Work only with proper and standard tools.
Use only original parts supplied/approved by Netafim™.
INTRODUCTION
SANDSTORM™ SINGLE-/DOUBLE-CHAMBER USER MANUAL 5
INTRODUCTION
Handling sodium hypochlorite (NaClO) or hydrogen peroxide (H2O2)
WARNING
Sodium hypochlorite (NaClO) and hydrogen peroxide (H2O2) are dangerous toxic and corrosive
chemicals. All application regulations and safety rules must be observed. Store and handle them
according to safety regulations.
Before handling
sodium hypochlorite (NaClO)
or
hydrogen peroxide (H2O2)
, carefully read all the
specific safety, health protection and first aid information and instructions.
Be sure you have all
required first aid at the site, as instructed
.
Concentrated liquid sodium hypochlorite (NaClO) or hydrogen peroxide (H2O2) can damage exposed
metal (especially threads that are exposed to water). Be careful when applying them and avoid the
spillage of any of the liquid onto exposed metal parts. Should any of the liquid come into contact
with metal parts, immediately wash thoroughly with fresh water.
Tools required for maintenance and troubleshooting
• No special tools are needed. A standard toolkit is adequate.
• To connect grooved couplings: The following wrenches are required:
Grooved coupling size Bolt and nut size
(mm)
Wrench size
(mm)
inch mm
2 50 M10 17
3 80 M12 19
4 100 M12 19
6 150 M16 24
8 200 M20 30
10 250 M22 34
• To connect flanges: The following wrenches are required:
Flange size Bolt and nut size Wrench size
up to 8" 5/8" 15/16 "
10" to 14" 7/8" 1.1/ 8 "
Flange connection
In most cases, the filtration system manifolds are connected to the main line with flanges.
ATTENTION
When connecting flange pipe connectors, do not forget to place the rubber gasket in place.
6 SANDSTORM™ SINGLE-/DOUBLE-CHAMBER USER MANUAL
INTRODUCTION
Filtration system components and structure
Single-chamber media filtration system
Media filter tank
Backwash 3-way hydraulic valves
Backwash
flow- control valve
Filtration system
control kit
Air valve
Inlet manifold
Outlet manifold
Backwash manifold
Grooved coupling
Manifold support legs
Inlet flange adaptor
Outlet
flange adaptor
Backwash
flange adaptor
Location of the tank ports
1
Filling port
2
Side service port
3
Bottom service port
1
2
2
3
SANDSTORM™ SINGLE-/DOUBLE-CHAMBER USER MANUAL 7
INTRODUCTION
Media filter tank
Backwash 3-way hydraulic valves
Backwash
flow- control valve
Filtration system
control kit
Air valve
Inlet manifold
Outlet manifold
Backwash manifold
Grooved coupling
Manifold support legs
Inlet flange adaptor
Outlet
flange adaptor
Backwash
flange adaptor
Location of the tank ports
1
Filling port
2
Side service port
3
Bottom service port
1
2
2
3
Filtration system components and structure
Double-chamber media filtration system
8 SANDSTORM™ SINGLE-/DOUBLE-CHAMBER USER MANUAL
INITIAL OPERATION AND ADJUSTMENT
DP ACTUAL
DP SET
FLUSH
TIME
FLUSH
MODE
BARSec Hours
MANUAL
ENTER
The actual DP value.
Available only when the built-in
electronic DP sensor is used.
The DP set-point.
Available only when the built-in
electronic DP sensor is used.
The desired
flushing time
per station.
The desired flushing mode.
Contains either the flushing
interval or, when the flushing
is triggered by DP only, the
letters “DP.”
1.
Set the BackFlush 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 switches off and a beep is heard every 20 seconds to indicate it is
working.
Holding down any of the keys for a few seconds will bring the screen back to life.
The screen consists of several fields. Some of them are editable and some of them are not.
To enter the EDIT MODE, press the key. The EDIT MODE is indicated by blinking of the currently
editable field.
Each time you press the key, the next editable field becomes active and starts blinking.
Use the and keys to change the value in the active field.
Press the key again to set the selected value for the current field and move to the next editable field.
To return to a previous field during the process of passing through the editable fields, press the key
repeatedly until you get back to the FLUSH TIME field, and there are blinking fields. You can then begin
the process again.
Configuration
Parameter Definition Action
Main valve
(sustaining valve)
The pre-dwell delay between the main valve
opening and the opening of station 1
Select:
YES
if exists
Enter:
20 sec
Dwell time
The backwashing delay between stations Enter:
10 sec
DP delay
The delay during which the DP sensor reading
is expected to remain stable before reaction
Enter:
10 sec
Looping limit
The number of consecutive flushing cycles
triggered by the DP sensor before deciding
that there is an endless looping problem
Enter:
3
Alarm
Allocates one output for alarm activation Select:
YES
Delay valve
Allocates one output for delay-valve activation Select:
YES
if exists
(continued on the next page)
SANDSTORM™ SINGLE-/DOUBLE-CHAMBER USER MANUAL 9
INITIAL OPERATION AND ADJUSTMENT
Parameter Definition Action
View outputs
This is a special mode that enables the user to
review the list of outputs and their allocations.
The output number is displayed in the bottom
left corner and its allocated function appears in
large letters in the center of the screen
Use the
key to toggle between
NO and YES and confirm by
pressing
the key
. Keep using
the key to review the list
Pressure units
Select the units to be used for pressure
measurement
Select:
BAR
or
PSI
Calibration
Zero calibration of the built-in electronic DP
sens or.
Disconnect the sensor ports from
the command tube and open them
to atmospheric pressure;
then select calibration:
YES
Version display
Displays the controller's software versionnumber.
No action required.
Press the key twice to
proceed.
Flush time
The desired flushing time per station. Enter:
100 sec
DP set-point
The pressure difference between the filter’s
inlet and outlet that initiates a flushing cycle.
Enter:
0.7 bar or 10 PSI
Flush mode
The flushing interval or, when the flushing is
triggered by DP only, the letters “DP.”
Enter:
3 hours
(For full instructions, see the BackFlush controller manual).
NOTE
If the filtration system was not ordered with a BackFlush controller and is used with an existing
irrigation system controller, see your irrigation controller user manual for instructions.
2.
Turn on the water and start irrigation.
3.
As soon as the system is pressurized and stable, start a manual backwashing cycle by pressing the
key. The icon will appear on the display (to manually terminate a backwashing cycle in progress,
press the same key).
4.
After completion of a full backwashing cycle, check that the filtration system DP is within the operational
range (0.15-0.4 bar/2.2-5.8 PSI, depending on the flow rate). Toggle the control kit 3-way ball valve and
note the filtration system inlet and outlet pressure. Subtract the outlet pressure from the inlet pressure.
The result is the filtration system DP.
5.
Check all the filtration system connections for water leaks – re-fit, re-connect and re-secure if necessary.
6.
Check all the command tube connections for leaks – re-fit, re-connect, and re-secure if necessary.
7.
Check that the backwashing cycle is performed in the correct order and that all the filters in the system
are backwashed in sequence.
8.
Check the secondary filter (if installed) for the presence of gravel.
NOTE
If a secondary filter is not installed, disconnect the main line pipe downstream from the filtration
system, let the water flow to the ground and visually check for the presence of gravel.
If gravel is present, see Troubleshooting, page 17.
ATTENTION
Steps 2 to 8 above should be performed whenever the operation of the filtration system is resumed
after being idle (i.e., after seasonal shutdown, maintenance or troubleshooting operations).
Configuration (continued)
10 SANDSTORM™ SINGLE-/DOUBLE-CHAMBER USER MANUAL
MAINTENANCE
NOTE
It is highly recommended to keep track of the filtration system pressure regime. Make a dated list
of all maintenance activities with system pressure data.
Once a week
While the system is working:
1. Start a manual backwashing cycle by pressing the key (the icon will appear on the display) and
check that the backwashing happens in sequence according to your backwash controller setup (to
manually terminate a backwashing cycle in progress, press the same key).
2.
Check that during the last 10 seconds of the backwash of every filter, the water from the backwash
manifold runs out freely and clean.
3.
After completion of a full backwashing cycle, check that the filtration system DP is within the
operational range (0.15-0.4 bar/2.2-5.8 PSI, depending on the flow rate). Toggle the control assembly
3-way ball valve and note the filtration system inlet and outlet pressure. Subtract the outlet pressure
from the inlet pressure. The result is the filtration system DP.
4.
Check the control assembly filter and clean it (blockage of this filter will cause a malfunction of the
backwashing process).
5.
Check for leaks from connections and fittings - re-fit, re-connect and re-secure if necessary.
6.
Open the secondary screen filter (if installed) and check its condition - if necessary, take out the filtration
element and clean it with high pressure water. Put the filtration element back in place and close the
fil ter.
7.
Check the filtration system visually for any damage to the paint. If the protective coating of the tanks
and/or manifolds is damaged, see Paint retouching of the tanks and manifolds, page 16.
For further assistance, contact your local Netafim™ representative.
Once every three months
While the system is working:
1. Perform steps 1 - 5 as described in the weekly maintenance section above.
2.
Release the pressure from the filtration system. Open any valve downstream from the filtration system
or the manual valve (if installed) on the outlet manifold end-cap until the pressure is fully released.
Check the pressure gauge to be sure it is at 0 before proceeding.
3.
Empty all the water from the filtration system. Open any valve downstream from the filtration system or
the manual valve (if installed) on the outlet manifold end-cap.
4.
Open the filling port (top port) of all the tanks.
TIP
To speed up emptying the water from the filtration system,
you can temporarily dismantle the outlet manifold end-cap.
SANDSTORM™ SINGLE-/DOUBLE-CHAMBER USER MANUAL 11
MAINTENANCE
5.
Visually check the filtration system (externally and inside the tanks, with the aid of a flashlight) for
any damage to the paint. If the protective coating of the tanks and/or manifolds is damaged, see Paint
retouching of the tanks and manifolds, page 16.
6.
Check the level of media inside the filters.
• If the level is lower than the media level marker on the filter tank - add media.
• If the level is higher than the media level marker on the filter tank - remove media.
7.
Manually stir the media inside the tank and check for media solidification.
• If the media has solidified, crumble it with high pressure water.
WARNING
Do not use tools (such as a shovel) to crumble the media, as this could damage the elements inside
the tank.
8.
Open the secondary screen filter (if installed) and check its condition - if necessary, remove the filtration
element and clean it with high pressure water. Put the filtration element back in place and close the
fil ter.
For further assistance, contact your local Netafim™ representative.
At the end of the irrigation season
ATTENTION
Never leave the filtration system unclean for the winter season.
1.
During the last irrigation cycle of the season: Check the filtration system inlet and outlet pressure and
make sure that they and the DP (Delta pressure) fit the system benchmark data.
2.
Perform all actions as described in the weekly maintenance section, page 10.
3.
Check that the backwashing parameters in the controller are correct. If not, enter the correct data.
4.
Close the water inlet to the filtration system.
5.
Perform steps 2 - 4 as described in the quarterly maintenance section, page 10.
6.
Check the level of media inside the filters.
• If the level is lower than the media level marker on the filter tank - add media.
• If the level is higher than the media level marker on the filter tank - remove media.
7.
Open the secondary screen filter (if installed) and check for gravel. If there is gravel, empty the tank that
is losing media and replace the damaged under-drain diffuser/s ("flute/s" or "mushroom/s")
(see Replacing a damaged under-drain diffuser part, page 18).
8.
Perform chemical cleaning of the media (see Algae and bacterial growth control, page 13).
9.
Turn off the water.
10.
Open the secondary screen filter (if installed), remove the screen, clean it and store it in a dry and safe
place with all the filter covers and handles.
• For manual filters: Make sure that the cover gaskets are dry before storage.
• For automatic or semi-automatic filters: Open the filter and check all the inner elements.
11.
Lubricate all the screws and bolts of the system. In particular, carefully oil the screws of the shutter
units in the gravel filter and the secondary screen filter (if it is a manual filter).
12 SANDSTORM™ SINGLE-/DOUBLE-CHAMBER USER MANUAL
MAINTENANCE
12.
Open all gravel-filter covers, drain all the water out of the filtration system (preferably by removing the
outlet manifold end-cap). When the filters are completely drained, close the filling ports.
13.
Disconnect the electricity source of the backwash controller (for battery-operated controllers – remove
the batteries).
For further assistance, contact your local Netafim™ representative.
At the beginning of the next irrigation season
1.
Check all covers, gaskets and screen/s that were stored at the end of the previous season. Clean them
and wash with fresh water.
2.
Check the level of media inside the filters.
• If the level is lower than the media level marker on the filter tank - add media.
• If the level is higher than the media level marker on the filter tank - remove media.
3.
Install the screen and cover of the secondary screen filter.
4.
Connect the electricity source to the controller (for battery-operated controllers – replace the old
batteries with new ones) and perform a manual backwash – be sure that the controller sends signals in
sequence to the solenoids valves and that the solenoids are reacting.
5.
Clean the screen filter in the control assembly with fresh water.
6.
Lubricate all the screws and bolts of the system. In particular, carefully oil the screws of the port covers
in the gravel filter and the secondary screen filter cover.
7.
Perform chemical cleaning of the media (see Algae and bacterial growth control, page 13).
8.
Run according to the irrigation program.
For further assistance, contact your local Netafim™ representative.
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