Angle-Line Basket (ALB) Strainer Installation, Operation, and Maintenance (IOM) Manual
Application Angle-Line Basket (ALB) Strainers allow for the
convenience of capturing product particles or contaminant debris in a removable basket style element to drastically minimize downtime, eliminating the need to remove the entire strainer body from the process line or the need to remove debris out of the body during an element change. Operating Parameters Table 1: Maximum Operating Pressures and Temperatures AL Strainer Body Size AL Strainer Connection Sizes
Tri-Clamp Type “Standard” (13MHHM)
Max. Pressure @ 250 °F
4.0”
1.5” – 4.0”
125 psi
“High Pressure” (13MHP)
4.0”
1.5” – 4.0”
200 psi
Maximum Recommended Flow and Pressure Drop Table 2: Maximum Recommended Flow and Pressure Drop Connection Size Body Size Max. Recommended Flow (gpm) Pressure Drop @ Max. Recommended Flow 1 (psi)
Max. Allowable Pressure Drop Across Element – Perf. / Wedgewire 2 (psi)
1.5” 2.0” 2.5” 3.0” 4.0”
4.0” 4.0” 4.0” 4.0” 4.0”
55
1.5 3.1 5.2
40 40 40 40 40
105 165 235 220
10.0
9.9
1 For 70 °F Water. 2 Elements exposed to pressures above this may sustain damage.
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Safety Precautions 1. Do not exceed temperature or pressure rating of strainer assembly. 2. Do not loosen or remove any clamps while the strainer is under pressure. 3. Lockout supply pump(s) and other equipment in-line with the strainer during cleaning to prevent accidental operation when strainer is open. 4. Use protective gloves when removing strainer element and clearing debris from element. 5. Use only Sani-Matic replacement parts.
Installation and Operation
Figure 1: ALB Strainer Flow (Side-Inlet)
Angle-Line Basket Strainers are designed for flow in one direction, resulting in the soils being collected on the inside of the strainer basket. Angle-Line Basket Strainers are supplied only as ‘Side-Inlet’ flow, as indicated by the arrow on the side of the housing. Install the strainer for ease of access and element removal. Use adequate piping supports to avoid over- stressing strainer fittings. Add isolation valves downstream and/or upstream of the strainer to allow opening and manual cleaning of the element without draining the entire line.
To monitor plugging of the strainer during operation, pressure gauges may be installed on both sides of the strainer to measure differential pressure. When the strainer has been cleaned, it will have the minimum differential pressure at the operating flow rate. If the strainer starts to get plugged, this can be detected by an increase in the differential pressure. In addition, electronic signals from differential pressure sensors may be included to automatically detect and alarm the control system.
Figure 2: ALB Strainer With Optional Sight Glass and Gauge Ports
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Assembly 1) Install (5) O-Ring on the (1) Strainer Element Frame by sliding it over the element and into the O- ring groove. Do not use sharp tools, as these will damage the O-ring. 2) Install (4) End Cap O-Ring on the (3) End Cap ensuring it is captured in the O-ring groove. Do not use sharp tools, as these will damage the O-ring.
NOTE: Apply food grade lubricant onto the (4) End Cap O-Ring prior to installing the O-Ring.
3) Install the assembled (3) End Cap onto the (1) Strainer Element Frame by applying some force and rotating the (3) End Cap clockwise until it will not turn further. 4) Slide the (6) Gasket over the (1) Strainer Element Frame , so it rests on the endcap. 5) Insert the assembled (1) Strainer Element Frame into the (5) Strainer Body , making sure the (6) Gasket is in the groove on both the (1) Strainer Element Frame and (2) Strainer Body . 6) Secure with a (7) Clamp , tightening the wing nut to 25 in. lb. torque.
Figure 3: ALB Strainer Exploded View
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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 strainer. 3) Close any available blocking valves. 4) Disassemble the strainer by removing the
clamp and pulling the strainer element frame out. 5) Remove end cap. Remove mesh underlay, if present. 6) Use a hose to spray the insert off with water to remove loose debris. 7) Remove all O-rings.
Figure 4: COP Parts Washer Cleaning
8) Clean the insert and O-rings 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. 9) Rinse with appropriate water supply and inspect all parts for cleanliness and damage. 10) Reassemble the strainer as described above. *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. Maintenance During normal disassembly, cleaning, and reassembly, inspect the strainer for the following: 1) Soil. Inspect for soil particulates or foreign matter caught in the insert. Remove as necessary. 2) Gasket/O-Ring. Inspect for cuts, abrasions, tears, holes, deformity, or other visible damage. Replace as necessary. 3) Element. Check for bent components, holes, or other damage. Replace as necessary. 4) Mesh Underlay (if applicable). Inspect for tears or other damage. Replace as necessary. o Remove and clean strainer element at least once per shift. o More frequent removal and cleaning may be required with heavier soils.
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Troubleshooting Table 3: Troubleshooting Problem
Possible Causes
Element won’t fit into housing
1. Damaged element
1. Incorrect element selected for particulate size 2. Damaged underlay 3. Damaged element 4. Loose assembly
Particulate getting through strainer
1. Element mesh/perforation size too small for particulate size/quantity typically present in process 2. Insufficient CIP pre-rinses 3. Inadequate Preventive Maintenance cleaning of strainer element
Strainer plugging frequently
1. Damaged pump impeller 2. Damage to upstream process equipment 3. Inadequate flushing of new installation
Metal particulates in strainer
1. Inspect End Cap for damage, specifically the four (4) “ears” that lock into place. 2. Ensure End Cap O-Ring is installed and not damaged. 3. Ensure End Cap O-Ring is lubricated.
End Cap Loose / Tight / Not Fitting
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