3" TAF-750 FILTERS

Introduction

This document provides comprehensive instructions for the installation, operation, and maintenance of the AMIAD 3" TAF-750 filter. It includes technical specifications, safety guidelines, operational procedures, parts lists, and warranty information.

For online orders, please visit: www.irrigationglobal.com

For general inquiries or support, contact Amiad Water Systems Ltd. at:

D.N. Galil Elyon 1, 1233500, Israel

Tel: +972 4 690 9500 | Fax: +972 4 814 1159 | Email: info@amiad.com

Disclaimer: Copyright © 2018 Amiad Water Systems Ltd. All rights reserved. The content of this document is the sole property of Amiad Water Systems Ltd. Reproduction, modification, or distribution without written permission is prohibited. This document does not replace certified drawings or project-specific information. Amiad assumes users understand risks and provides this information in good faith. While efforts are made to ensure accuracy, errors or omissions should be reported to Amiad.

Technical Specifications

General

Flushing Data

Control and Electricity

Construction Materials

Standard Filtration Degrees

Safety Instructions

General

1. Prior to installation or any treatment given to the filter, read carefully the installation and operation instructions.
2. While maintaining the filter, all standard safety instructions should be observed to avoid danger to workers, the public, or property.
3. ⚠️ Please note, the filters enter into a flushing mode automatically, without prior warning.
4. No changes or modifications to the equipment are permitted without written notification from the manufacturer or its representative.

Installation

1. Install the filter according to the installation instructions detailed in this manual.
2. Make sure to leave enough clearance for easy access for future treatments and safe maintenance operations.
3. Electric wiring should be performed by an authorized electrician only, using standardized and approved components.
4. Install a main power disconnect cut-off switch close to the control panel.
5. If the control panel is installed where there is no eye contact with the filter, a power disconnect cut-off switch should be installed near each filter unit.
6. Install the filter to avoid water splashing directly on electrical components or the control panel.
7. Additional safety devices should be installed on hot water applications to avoid skin burn danger. ♨️

Operation, Control and Maintenance

1. Disconnect the filter from power supply before maintenance or treatment.
2. Loosening or unscrewing bolts should be done only after the pressure in the filter has been released.
3. Avoid splashing and water leaking to minimize slipping, electrocution, or damage from moisture.
4. Always open and close valves slowly and gradually.
5. Remove grease and fat material residues to avoid slipping.
6. After treatment, re-assemble the protection covers of the drive mechanism.
7. Manual cleaning of filter element using high water pressure or steam should be performed according to cleaning system instructions and without endangering the operator.
8. Manual cleaning of filter element using acid or other chemical agents should be performed according to relevant material safety instructions and without endangering the operator.

Use of Lifting Equipment

1. While using lifting equipment, ensure the filter or lifted part is chained securely and safely.
2. Do not leave lifted equipment hanging unnecessarily. Avoid working below lifted equipment.
3. Wear a safety helmet while using lifting equipment. ⛑️

Dimensional Drawings

The diagram provides key dimensions for the 3" TAF-750 filter. It includes front, side, and bottom views, illustrating the placement of Inlet (N1), Outlet (N2), and Drain (N3) ports.

Key dimensions are:

• Overall Height (approx.): 1055 mm (41.55 inches)
• Inlet/Outlet Port Diameter: 80 mm (3 inches)
• Drain Port Height: 292 mm (11.50 inches)
• Approximate required height for maintenance: 342 mm (13.48 inches) and 225 mm (8.87 inches).

Note: Dimensions are provided in mm and inches where applicable.

Description of Filter Operation

The "TAF" filter is a sophisticated, automatic electric filter with an electric motor-driven self-cleaning mechanism. It is designed for filtration degrees ranging from 500 to 10 micron.

Filtering Process

Water enters through the inlet pipe into the screen area and flows through the screen from the inside out. A "filtration cake" accumulates on the screen surface, leading to increased head loss.

Self-cleaning Process

The TAF initiates its self-cleaning process when the pressure differential across the screen reaches a pre-set value or after a predetermined time interval. A fine screen filter element is cleaned by a suction scanner whose nozzles spiral across the inner screen surface. The filtration cake is vacuumed from the screen and expelled through the exhaust valve. The scanner's spiral motion is driven by a unit that rotates a bi-directional continuous worm shaft. The exhaust valve is activated for the duration of the cleaning cycle by a 3-way solenoid. Filtered water continues to flow downstream during the flush cycle, which takes approximately 16 seconds.

Installation

Design Recommendations

1. The filter requires a flushing flow of 5.7m³/h (25USgpm) in addition to the working flow rate, at a minimum pressure of 1.5 bar (22 psi). If the system cannot provide this additional flow at the required pressure, a hydraulic valve should be installed downstream of the filter. This valve must be closed during the flushing process to ensure sufficient cleaning.
2. Prevent water from flowing in the opposite direction. If backflow is possible, install a non-return check valve downstream of the filter.

Installation Instructions

1. Install a manual valve upstream of the filter to enable convenient maintenance.
2. The diameter of the inlet pipe must not be smaller than that of the filter inlet.
3. Install the filter in a location that allows convenient approach and sufficient space for dismantling during maintenance.
4. It is recommended to install the filter horizontally, especially if the water contains sand.
5. Ensure the direction of flow is indicated by the arrows marked on the filter housing.
6. The exhaust valve can face downwards or sideways. Connect a minimum 1.5" (40 mm) pipe to the exhaust valve using a detachable connector or a flexible pipe. The exhaust pipe should be designed to create minimal resistance to the flushing flow of 5.7m³/h (25USgpm).
7. If the system operates at a working pressure higher than 6 bar (85 psi), it is recommended to install a manual valve on the exhaust pipe to regulate the flushing flow rate.

Start-Up and First Operation

1. Set the controller to 16 seconds flushing time and 2-4 hour intervals.
2. Operate a "dry" flushing cycle to verify proper operation of the controller, motor, and solenoid valve.
3. Open the inlet valve to the filter, while the outlet valve remains closed or with an open by-pass valve (this keeps flow in the filter minimal). Operate a flushing cycle by pressing the push-button on the controller panel.
4. Ensure the exhaust valve opens and all stages of the flushing cycle are carried out. Attend to any leakage. If necessary, adjust the time setting to ensure complete up and down motion of the suction scanner.
5. Gradually open the outlet valve and/or close the by-pass valve. Operate the filter under the designed hydraulic conditions.

Maintenance

NOTE: Depressurize the filter before maintenance (Close inlet and then outlet valves).

Checking the filter

1. Unscrew the filter cover.
2. Extract the screen and clean if necessary. Cleaning is performed by hosing the screen from outside-in, and/or with a nylon brush.
3. Check the Screen O-ring and apply grease, if necessary.
4. Replace the screen.
5. Re-attach the cover and tighten.

Checking the PD switch connectors

Check the L-Connectors to the PD Switch to ensure there are no obstructions.

Winterization

Filter operations should be suspended in climates where the filter is exposed to freezing temperatures.

1. Check that the outlet valve is closed and perform two manual rinses.
2. Close the inlet valve to the filter and release the pressure.
3. Remove all drain lines from the valves, drain, and reconnect.

Leaks

In case of a leak, contact Amiad technical support.

Parts Schedule - 3" TAF-750 FILTER Section 1

Parts Schedule - 3" TAF-750 FILTER Section 1 (Continued)

Parts Drawing - 3" TAF-750 FILTER Section 1

The diagram displays an exploded view of the filter's main assembly, with components numbered according to the parts schedule. Key visible parts include the drive unit cover (41), control modules (42, 43, 44), filter housing (6), screen assembly (4, 4.1), and various connectors, seals, and fasteners. The numbering ranges from 2 to 52, with specific sub-numbers like 2.1 and 4.1.

Parts Schedule & Drawing - 3" TAF-750 FILTER Section 2

Parts Schedule

Drawing Description

The diagram illustrates the suction scanner assembly, including the shaft (2), scanner head with nozzles (1, 1.1, 1.2), and associated screws (1.3) and pins (3).

Control Drawing

The diagram illustrates the control system connections for the filter. It shows tubing originating from High Pressure (H.P.) and Low Pressure (L.P.) ports on the filter body, connecting to control units labeled '1' and '2'. These units are linked to a "TO CONTROL BOARD" and "TO CONTROL BOARD 24 VAC" connection. A "VENT" port is also indicated in the diagram.

Amiad Limited Warranty

This certificate applies to Amiad Products purchased by You from Amiad or an Amiad authorized Distributor ("Distributor"). This limited warranty extends only to the original purchaser, and is not transferable to anyone who subsequently purchases, leases, or otherwise obtains the Product from the original purchaser.

1. Amiad warrants that the Products are and will be free from defects in material and workmanship under normal use and service. Amiad warrants that it will correct manufacturing defects in the Products, in accordance with the conditions set out in this warranty.
2. This warranty is enforceable for a period of 12 months after the date of Bill of Lading or equivalent (the "Warranty Period").
3. In the event that during the Warranty Period the Distributor discovers a defect in material and/or workmanship in any Product or part (the "Defective Product"), it shall submit a written complaint to Amiad using Amiad's standard customer complaint form. For the receipt of the customer complaint form, the submission of the complaint or any questions please contact your customer service representative.
4. Upon written demand by Amiad, the Distributor shall return the Defective Products or a sample thereof to Amiad, at Amiad's cost. If the customer ships any such Product, Amiad suggests the customer package it securely and insure it for value, as Amiad assumes no liability for any loss or damage occurring during shipment. Provided however that in the event Amiad determines that the warranty does not apply to such Product, Distributor shall promptly reimburse Amiad for such cost (including freight and customs). Any returned Product or part must be accompanied by the warranty certificate and the purchase invoice. It is clarified that the Distributor may not return the Defective Product unless such return was coordinated and approved by Amiad in advance.
5. Amiad's obligation under this warranty shall be limited to, at its option, the repair or exchange, free of charge, of the Product or any part which may prove defective under normal use and service during the Warranty Period. The provision of a repaired or replacement Product during the Warranty Period will result in an extension of the Warranty Period by an additional period of 12 months, provided that the total accumulated Warranty Period shall in any event be no more than 18 months from the original Bill of Lading.
6. This warranty is valid on the condition that the Products are installed according to Amiad's instructions as expressed in Amiad's instruction manuals and according to the technical limitations as stipulated in Amiad's literature or as stated by a representative of Amiad.
7. This warranty will not apply to damaged or defective Products resulting from or related to:
   • (i) Fire, flood, power surges or failures or any other catastrophe/and or unforeseen occurrence, such as but not limited to those for which the customers are customarily insured;
   • (ii) Fault, abuse or negligence of the customer;
   • (iii) Customer's responsibilities, including the failure of the intake water to meet the agreed standards, as set forth in a written document, approved by Amiad or improper storage.
   • (iv) Improper or unauthorized use of the Product or related parts by the customer, including the customer's failure to operate the Product in conformity with the recommendations and instructions of Amiad, as set forth in Amiad's manuals and other written materials, the operation of the Product other than by a trained and qualified operator, or improper installation of the Product by a third party not authorized by Amiad;
   • (v) Performance by the customer of maintenance and other services other than by a trained and qualified advanced operator, or other than in conformity with the recommendations and instructions of Amiad, or other than in accordance with procedures defined in the literature supplied for Products;
   • (vi) Any alteration, modification foreign attachment to or repair of the Products, other than by Amiad or its authorized technical representatives.
8. In no event shall Amiad be liable to the customer or any third party for any damages, including indirect, special, exemplary, punitive or consequential damages, or lost profits arising out of or in connection with this warranty, or arising out of or in connection with the Product's performance or failure to perform, even if it has been advised of the possibility of such damages.
9. Amiad will be excused for failure to perform or for delay in performance hereunder if such failure or delay is due to causes beyond its reasonable control or force majeure preventing or hindering performance.
10. The limited warranty set forth herein is the only warranty given by Amiad and is provided in lieu of any other warranties created by any documentation, packaging or otherwise.
11. Amiad makes no warranty whatsoever in respect of accessories or parts not supplied by Amiad. In the event that Amiad is required to correct a defective Product or product not covered by this warranty, it will do so solely in consideration for additional fees.