amiad AGF Manual

48" AGF 910101-001049 / 01.2020 Page 1 of 21
AMIAD Water Systems Ltd.
48" AGF
Automatic Filtration System
Serial number:
Order number:
Catalog number:
Tested by:
Installation, Operation and Maintenance
Instructions
Ref. 910101-001049 / 01.2020
Original Instructions

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AMIAD Water Systems Ltd.
48" AGF Automatic Filtration System
Disclaimer:
Copyright © 2018 Amiad Water Systems Ltd. All rights reserved.
The contents of this document, including without limitation all information and materials, images, illustrations, data, drawings, names and
any other such materials that appear in this document are the sole property of Amiad Water Systems Ltd. ("Amiad"), including any
intellectual property rights, whether registered or not, and all know-how contained or embodied therein (together the "Content"). Amiad
may alter, remove or change the Content without any further notice. You may not reproduce, copy, modify, create derivative works from,
sell or participate in any sale of, or exploit in any way, in whole or in part, any of this document or its Content.
The confidential nature of and/or privilege in the file enclosed is not waived or lost as a result of a mistake or error in this file. If you
received this file in error, please notify Amiad immediately at [email protected].
This document does not replace any certified drawing, procedure or information provided by Amiad in reference to a specific customer,
site or project.
Amiad assumes that all users understand risks involved within this file and/or its attached materials. This document is given in good faith
and is not intended to impose any obligation to Amiad. While every effort has been made to ensure the information in this manual is
accurate and complete, we would appreciate if you can bring any errors or omissions to the knowledge of Amiad or consult Amiad experts
or its authorized representatives if you have any questions.
Amiad Water Systems Ltd. D.N. Galil Elyon 1, 1233500, Israel Tel: [phone] | Fax: [phone] Email: [e-mail]

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Table of Contents
TECHNICAL SPECIFICATIONS....................................................................................................................................................4
1. GENERAL ........................................................................................................................................................................4
2. BACKWASHING DATA ........................................................................................................................................................4
3. CONSTRUCTION MATERIALS ...............................................................................................................................................4
4. FILTRATION MEDIA TYPE....................................................................................................................................................5
5. SILICA SAND /GRAVEL DATA ..............................................................................................................................................5
SAFETY INSTRUCTIONS ............................................................................................................................................................6
6. GENERAL SAFETY INSTRUCTIONS..........................................................................................................................................6
7. INSTALLATION SAFETY INSTRUCTIONS ...................................................................................................................................6
8. COMMISSIONING SAFETY INSTRUCTIONS ...............................................................................................................................8
9. OPERATION AND CONTROL SAFETY INSTRUCTIONS ..................................................................................................................8
10. MAINTENANCE SAFETY INSTRUCTIONS..................................................................................................................................8
DIMENSIONAL DRAWING ...................................................................................................................................................... 10
AGF FILTERS WORKING PRINCIPLE ........................................................................................................................................11
1. MEDIA FILTERS ..............................................................................................................................................................11
2. HOW THE AGF FILTERS OPERATE ......................................................................................................................................11
3. THE FILTRATION PROCESS ................................................................................................................................................12
4. THE BACKWASH PROCESS ................................................................................................................................................12
INSTALLATION .......................................................................................................................................................................13
1. PRE INSTALLATION.............................................................................................................. ERROR!BOOKMARK NOT DEFINED.
2. FILTER ASSEMBLY ...........................................................................................................................................................13
3. LEAKAGE TEST................................................................................................................................................................14
4. FILLING-UP THE MEDIA ...................................................................................................................................................14
5. INITIAL OPERATION .........................................................................................................................................................14
MAINTENANCE ......................................................................................................................................................................15
1. GENERAL INSPECTION......................................................................................................................................................15
2. PERIODIC INSPECTION......................................................................................................................................................15
3. ANNUAL INSPECTION.......................................................................................................................................................15
4. REPLACING THE MEDIA ....................................................................................................................................................15
TROUBLESHOOTING ..............................................................................................................................................................16
AGF FILTER PARTS LIST ..........................................................................................................................................................18
PARTS DRAWING ...................................................................................................................................................................19
AMIAD LIMITED WARRANTY .................................................................................................................................................20
With any inquiry, please make sure to quote the Filter Serial Number, located on the filter housing.

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Technical Specifications
1. General
Filter tank diameter
1,200 mm
48”
Inlet/Outlet diameter 100 mm 4” grooved Flange standards per request
Maximum operating pressure 6 bar 85 psi
For ambient temperature (25 °C / 610F)
Minimum operating pressure
during filtration mode
1.4 bar
20 psi
Minimum pressure on the
downstream manifold during
backwash mode
2 bar
29 psi
Maximum operating temperature 500C 1220F
Flow rate range (single filter)
15-80 m3/h
66-352 gpm
Consult the manufacturer for optimal
flow, depending on type of media,
filtration degree & water quality
Vessel volume
780 Liters
206 US Gallons
Filtration surface area
1.13 m2
12.16 ft2
Filter weight (empty – filter only)
132 kg
291 lbs.
Media weight
732 Kg
1610 lbs.
Water weight
370 Kg
814 lbs.
2. Backwashing Data
Backwash valve 100 mm 4”
Backwashing cycle time 2 – 4 hours 2 – 4 hours
Backwashing time (single unit) 90-120 seconds 90- 120 seconds
Backwashing water consumption per 1
cycle (single unit) 1330-2000 Liters 351-528 US Gallons
Backwashing flow rate 40-60 m3/h 155-180 gpm
3. Construction Materials
Manifolds Polypropylene
Filter housing Polyethylene coated by glass flakes and resin
Media PEP Active / Quartz / Gravel
Backwash valves Polyamide
Distribution nozzles Polypropylene
Seals EPDM

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4. Filtration Media Type
Media
Type Quartz PEP Active (Glass media) Gravel
Grade 0 1 2 0 1 1
Size
0.5 - 0.8
mm
0.8 - 1.2
mm
1.2 - 2.0
mm
0.25 – 0.5
mm
0.5 - 1.1
mm
0.8 - 1.2
mm
0.019-0.031
inch
0.031-0.047
inch
0.047-0.078
inch
0.01098 -
0.019 inch
0.019 - 0.043
inch
0.031-0.047
inch
Media
weight 590 kg / 1300 lbs.
Recommended number of media bags (approximation)
Media Composition No. of media bags Media bag size
kg lbs.
Gravel 1 28 25 55
Quartz 2* + PEP Active 14 + 14 25 55
Quartz 2* + Quartz 0 14 + 14 25 55
*quartz 2 is a support layer of coarse media, spread below distribution nozzles’ "dead area"
5. Silica Sand / Gravel Data
Media type Mesh range Average effective size gravel
mm inch
Crushed Silica 12 80-130 1.1 - 1.2 0.043-0.047
Crushed Silica 16 155-200 0.6 – 0.7 0.023-0.275
Crushed Silica 20 170-230 0.45 – 0.5 0.017-0.019

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Safety Instructions
6. General Safety Instructions
1. Amiad filtration products always operate as components in a larger system. It is essential for the system
designers, installers and operators to comply with all the relevant safety standards.
2. Prior to installation, operation, maintenance or any other type of action carried out on the filter, carefully read
the safety, installation and operation instructions.
3. During installation, operation or maintenance of the filter, all conventional safety instructions should be observed
in order to avoid danger to the workers, public or to property in the vicinity.
4. Please note: The filter enters backwashing mode automatically, without an early warning.
5. No change or modification to the equipment is permitted without a written approval given in advance by the
manufacturer or by its representative, on the manufacturer’s behalf.
6. Always observe standard safety instructions and good engineering practices whilst working in the filter’s vicinity.
7. Use the filter only for its intended use as designed by the manufacturer. Any misuse of the filter may lead to
undesired damage and may affect your warranty coverage. Please consult with the manufacturer prior to any
non-regular use of this equipment.
7. Installation Safety Instructions
General
1. Install the filter according to the detailed installation instructions provided with the filter by the manufacturer and
according to the description given in this manual.
2. Make sure to leave enough clearance to enable easy access for future treatments and safe maintenance
operations.
3. The user should arrange suitable lighting around the area of the filter to enable good visibility and safe
maintenance.
4. The user should arrange suitable platforms, ladders, and safety barriers to enable easy and safe access to the filter
without climbing on pipes or other equipment. The user should verify that any platform, barrier, ladder, or other
such equipment is built, installed, and used in accordance with the relevant local authorized standards.
5. Check and re-tighten all bolts during commissioning and after the first week of operation.
6. Use only appropriate standard tools and equipment operated by qualified operators when installing, operating,
and maintaining the filter.
7. When installation is required in hazardous environment sites, underground or high above ground, make sure that
the site design and the auxiliary equipment are appropriate and that installation procedures are carried out in
accordance with the relevant standards and regulations.
8. Ensure walking areas about the installation are slip free when wet.
Shipment and transporting
1. Shipping and transportation of the filter must be done in a safe and stable manner and in accordance with the
relevant standards and regulations.
2. For shipping, lifting and positioning of the filter, use only approved lifting equipment and authorized employees
and contractors.

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Electricity
1. Electric wiring should be performed by an authorized electrician only, using standardized and approved
components.
2. Install a lockable main power cut-off switch close to the control panel.
3. If due to site constraints, the control panel is installed without a clear line-of sight to the filter, an additional
lockable power disconnect cut-off switch should be installed near each filter unit.
4. Installation of the filter should be performed to avoid direct water splashing on the electrical components or on
the control panel.
Pneumatics
1. Install a lockable main cut-off switch, featured with a pressure release mechanism, on the compressed air supply
line close to the control panel.
2. If the control panel is installed far away and there is no eye contact with the filter, a lockable compressed air cut-
off switch, featured with a pressure release mechanism, should be installed near each filter unit.
3. The user should make sure that the compressed air supplied to the filter never exceeds the maximum designated
pressure for this filter.
4. An air-pressure reduction valve should be installed on the compressed air supply line upstream of the filter’s
pneumatic inlet port.
Hydraulics
1. Extra safety devices should be installed on hot water applications to avoid skin burn risk.
2. The user should install a manual water cut-off valve next to the filter’s inlet port.
3. In cases where the downstream piping network of the filter is pressurized, an additional manual water cut-off
valve should be installed next to the filter outlet port.
4. The user should make sure that the system includes a pressure release or a drainage valve to enable release of
residual pressure prior to any maintenance procedure performed on the filter.
5. The user should make sure that the filter is never exposed to water pressure that exceeds the maximum
designated pressure for this filter. If needed, a pressure reduction valve should be installed upstream of the
filter’s water inlet port.
6. Please note that the maximum working pressure indicated at the filter’s specifications table includes the pressure
caused by fluid hammer and pressure surge effects.
Civil engineering
1. Make sure that the filter installation is done by the manufacturer’s qualified technicians.
2. Make sure that any civil engineering work at the installation site such as construction, lifting, welding, etc. is
done by qualified workers / technicians / contractors and in accordance with the relevant local standards.
3. While using lifting equipment, make sure that the filter or the lifted part is chained securely and in
a safe manner.
4. Do not leave lifted equipment if there is no necessity. Avoid working below lifted equipment.
5. Wear a safety helmet while using lifting equipment.
6. Make sure that the flooring is sloped for drainage, and to avoid accumulation of liquids.

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8. Commissioning Safety Instructions
1. Carefully read the commissioning and the first start-up operation instructions prior to any attempt to operate the
filter.
2. In order to achieve maximum performance and smooth operation of the filter, it is crucial to perform the startup
and first operation procedures exactly as described in this manual.
3. Commissioning the filter should be done by the manufacturer’s authorized technician. Do not attempt to
commission the filter unaccompanied since this may lead to undesired damage and may affect your warranty
coverage.
9. Operation and Control Safety Instructions
1. Do not operate the filter before carefully reading and being familiar with its operation instructions.
2. Observe the safety stickers on the filter and never perform any operation contradicting the instructions given.
3. Never operate or use the filter for purposes other than its original design and operational envelope.
10. Maintenance Safety Instructions
Before any maintenance or non-regular operation, please read the following:
1. Servicing the filter should be done only by technicians authorized by the manufacturer.
2. Disconnect the filter from its power supply and lock the main power switch.
3. Disconnect the compressed air supply, release the residual pressure, and lock the pneumatics main valve.
4. Disconnect the filter from its water system by closing and securing the manual inlet valve. In cases where the
downstream piping network is pressurized, close and secure the manual outlet valve.
5. Release the residual water pressure by slowly and gradually opening the pressure release or drainage valve.
6. Empty the filter by opening the drainage valve.
7. In hot water systems, wait until the filter components cool off to a safe temperature.
8. Place warning signs around the working area as required by the local standards and procedures.
9. Inspect the filter’s safety stickers and replace any damaged or faded ones.
Mechanical
1. When working on the filter, use only appropriate standard tools.
2. Always open and close valves slowly and gradually.
3. Remove grease and fat material residues in order to avoid slipping.
4. Before disconnecting the filter from its water supply, electricity and pneumatics, and before releasing the filter’s
residual pressure, do not:
oLoosen or unscrew bolts
oRemove any protection cover
oOpen any service port flange

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5. Avoid splashing and water leakage to minimize slippage, electrification, or damage to the equipment, caused by
moisture.
6. While using lifting equipment, make sure that the filter or the lifted part is secured and in a safe manner.
7. Do not leave lifted equipment if there is no necessity. Avoid working below lifted equipment.
8. Wear a safety helmet, goggles, gloves, and any other personal safety equipment required by local standards and
regulations.
9. Human entry into a filter must be done in accordance with the relevant local safety instructions, standards, and
regulations for working in hazardous environment.
10. Manual cleaning of filter media using high water pressure or steam should be performed in accordance with the
cleaning system instructions, the local standards and regulations and without endangering the operator or the
vicinity
11. Manual cleaning of filter element using acid or other chemical agents should be performed in accordance with
the relevant material safety instructions, the local standards, and regulations and without endangering the
operator or his vicinity.
Before returning to regular operation
1. Reassemble any protection covers or protection mechanisms removed during service or maintenance operations.
2. Make sure that all the tools, ladders, lifting devices, etc. used during the maintenance procedures are taken away
from the filter area and stored properly.
3. In order to return the filter to its regular operation, follow the first start-up operation instructions as detailed in
this user manual.
4. For filters used in potable water systems, it is required to disinfect the filter according to the local water
authority standards and regulations before putting it back to service.

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Dimensional Drawing