Magnetic Trap Strainers Installation, Operation, and Maintenance (IOM) Manual
Application
The Magnetic Trap Strainer assembly is designed for use with Sani-Matic 4" and 6” body size Angle-Line Strainers, standard flow direction, connection sizes 1.5"-3.0" for 4.0” bodies and connection sizes 3.0” – 6.0” for 6.0” bodies. The magnetic trap strainer assembly is installed inline to capture metal particles from the process stream as well as strain process particles such as seeds, pulp, and more. This IOM document is for the Magnetic Trap Strainer assembly only. For the full Angle-Line Strainer body and element instructions, please reference the Angle-Line Strainer IOM document (DM-0003). Operating Parameters See Angle-Line Strainer IOM document (DM-0003). Maximum Recommended Flow and Pressure Drop See Angle-Line Strainer IOM document (DM-0003). Safety Precautions 1. The magnetic rating range is 9,500 – 11,500 gauss. Working with metal tools next to the magnetic trap may pinch hands, and the magnets may be harmful to ID wearers and people with pacemakers. 2. Do not exceed temperature or pressure rating of strainer assembly. 3. Do not loosen or remove any clamps while the strainer is under pressure. 4. Lockout supply pump(s) and other equipment in-line with the strainer during cleaning to prevent accidental operation when strainer is open. 5. Use protective gloves when removing strainer element and clearing debris from element. 6. Use only Sani-Matic replacement parts.
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Installation & Operation The Magnetic Trap Strainer assemblies are used within Angle-Line Strainers and intended for standard flow processes (the process flows through the end-inlet and exits through the side-outlet). Perforated and wedgewire elements are suitable with standard flow processes, as are perforated elements with mesh overlays or filter tubes. For the full Angle-Line Strainer body and element installation instructions, please reference the Angle- Line Strainer IOM document (DM-0003). Assembly
The following instructions outline a 4” mag trap assembly – instructions for a 6” body are of a similar nature. Your O-Ring or Gasket material, or strainer element, may be different. For a video that shows retrofit and assembly of a mag trap, click on the below link or scan the below QR code.
[Sani-Matic Training] Magnetic Trap Strainer Retrofit
All pieces shown below must be present for a functional full Magnetic Trap Strainer Assembly.
Figure 1: Components of a 4” Magnetic Trap Strainer Assembly
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Steps 1-2 Place O-ring onto 4" O-ring Retainer. Use an O-ring spoon tip seal tool if needed to get the O-ring on and off of the retainer.
Step 3 Place the O-ring Retainer on the bottom of the Magnetic Trap Strainer Element Frame’s post and slide it to the base of the magnetic trap.
Ensure the O-ring Retainer placement bar at the base of Magnetic Trap fits into the grooves on the 4" O- ring Retainer.
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Step 4 Take your Strainer Element (photo shows a ¼" perforated Element) and slide it up the post of the Magnetic Trap Strainer Element Frame and fit it into the 4" O-ring Retainer.
Step 5 Place the Strainer End Plug onto the Magnetic Trap Strainer Element Frame by sliding it through the End Plug’s hole. The Element rests on the recessed ridge of the End Plug.
Step 6 Insert the end of the Retaining Clip into the Magnetic Trap Strainer Element Frame’s post hole.
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Once the Retaining Clip is resting in the center bend of the clip, wrap the clip around the Element.
Step 7 Place the Gasket over the end of the Magnetic Trap Strainer Element Frame Assembly and push it to the top of the assembly to rest against the Magnetic Trap’s cap.
Step 8 Place the assembled Magnetic Trap Strainer Assembly into the body of the 4" Angle-Line Strainer with the End Plug and Retaining Clip entering first.
NOTE: We are using a 4" Angle-Line Strainer Body Size with a cut-away as a demonstration piece to show how the Magnetic Trap Strainer Assembly is placed within the Strainer Body.
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Step 9 Ensure there is a tight fit where the Magnetic Trap Strainer Element Frame, Gasket, and Angle-Line Strainer body meet.
Place 4" tri-clamp around the gasket, cap, and strainer body.
Fit the 4" tri-clamp to ensure complete closure. Move the threaded wing nut into place and tighten to 25 in. lb. of torque.
See the full Angle-Line Strainer IOM document (DM-0003) for final process installation instructions.
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Cleaning* 1. Turn off and lock out any pumps and/or
equipment connected to the strainer process line.
2. Ensure that all pressure has been relieved from the system the strainer is installed on. 3. Close any available blocking / isolation valves. 4. Disassemble the strainer by removing the end cap clamp and pulling the Magnetic Trap Strainer Element out. 5. Remove mesh overlay / filter tube if present. Mesh overlay can be cleaned; discard filter tube after each use. 6. Use a hose to spray the insert off with water to remove loose debris. Water will not loosen and remove metal fines from the magnets.
Figure 2: COP Parts Washer Cleaning
7. The magnets within the Magnetic Trap are susceptible to shattering if handled without caution. DO NOT bang the Magnetic Trap Strainer Element Frame to loosen metal debris. The metal will not loosen and the magnets are likely to lose efficacy from rough handling. Instead, use a rag or dry wipe tissues to wipe down and pinch off the fine metal particulates from the four Magnetic Trap tubes. 8. Once the metal debris is removed from the magnets, the Magnetic Trap Strainer Element Frame may be placed in the 4” strainer body and clamped to be cleaned in place. If cleaning out of place, we recommend washing the Magnetic Trap Strainer Element Frame by hand using gloves, adequate temperature, chemical concentration, action, and time to remove all soil residue. Manual cleaning ensures care is taken to protect the magnets from breaking. 9. Clean the insert and other internals using a clean-out-of-place (COP) parts washer or other automated system running at an adequate temperature, chemical concentration, and amount of time to remove all soil residue. If automated cleaning is not available, manually clean soil residue off the element using a scrub device, water source, chemical and gloves. 10. Rinse with appropriate water supply and inspect all parts for cleanliness and damage. 11. Reassemble the strainer as described in the assembly section. *These are recommended cleaning instructions only. Follow any plant sanitation standard operating procedure (SSOP) that your facility may have in place. A tri-clamp cap can be attached to the strainer body, which can then be cleaned-in-place (CIP) if desired during COP of the strainer element.
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Maintenance During normal disassembly, cleaning, and reassembly, inspect the key areas of the strainer that may require maintenance: 1) Soil. Inspect for soil particulates or foreign matter caught in the element. Remove as necessary. 2) Tri-Clamp Gasket / O-Ring. Inspect for cuts, abrasions, tears, holes, deformity, or other visible damage. Replace as necessary or no longer than a recommended annual basis. 3) Element. Check for bent components, abnormal holes, or other wear and tear or damage. Replace as necessary. 4) Mesh Overlay (if applicable). Inspect for tears or other damage. Replace as necessary or no longer than a recommended monthly basis. Higher mesh sizes (finer mesh) may require more frequent replacement. 5) Filter Tubes (if applicable). Inspect for tears or other damage. Filter tubes are considered “single-use” and should be replaced in between each production run and/or cleaning procedure. 6) Magnetic Trap a. Remove and clean Magnetic Trap Strainer Element and Element Frame at least once per shift.
b. Evaluate magnets for bent/misaligned magnet tubes. c. Evaluate magnet tubes for surface finish damage/cracks. d. Perform annual gauss reading efficacy testing.
Remove and clean the strainer element at least once per shift. More frequent removal and cleaning may be required with heavier soils.
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Troubleshooting For the full Angle-Line Strainer troubleshooting, please reference the Angle-Line Strainer IOM document (DM-0003). Table 4: Troubleshooting Problems Solutions
1. Perform a gauss reading measurement to ensure strength is in specification – Sani-Matic can perform this test for a service charge; contact Sani-Matic for more information. 2. Review metal fines efficacy conditions table (Figure 3) and adjust process if possible to ensure more conducive conditions for capture of metallic particulates.
Magnetic Particles Are Not Captured
Figure 3: Metal Fines Capture Efficacy Conditions
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