{"id":3746,"date":"2026-09-08T03:18:27","date_gmt":"2026-09-08T03:18:27","guid":{"rendered":"https:\/\/lowayequipment.com\/engineering\/troubleshooting\/"},"modified":"2026-09-08T03:18:31","modified_gmt":"2026-09-08T03:18:31","slug":"troubleshooting","status":"publish","type":"page","link":"https:\/\/lowayequipment.com\/th\/engineering\/troubleshooting\/","title":{"rendered":"Filter Press Troubleshooting"},"content":{"rendered":"<p><script>\/* eng page flag: lets CSS hide the theme page-title *\/\ndocument.body.classList.add('lw-v7');<\/script><\/p>\n<div class=\"lw-home lw-eng lw-trouble\">\n<p>  <!-- ============ TBL-HERO ============ --><\/p>\n<section class=\"lw-eng-hero\">\n<div class=\"lw-container\">\n<p class=\"lw-eng-crumb\"><a href=\"\/th\/engineering\/\">Engineering Resources<\/a> \u00b7 Troubleshooting<\/p>\n<p class=\"lw-kicker\" style=\"display:block\">When something is off<\/p>\n<h1>Filter Press Troubleshooting: Symptoms, Checks and the Fix That Usually Works<\/h1>\n<p class=\"lw-eng-hero-sub\">A filter press does not fail in mysterious ways \u2014 it fails in <b>cloud filtrate, wet cake, long cycles, plate leaks and cloth blinding<\/b>, and most of these have a short, common-sense cause you can check before you call anyone. This page is a working guide for the operator, the maintenance team and the engineer in a hurry.<\/p>\n<div class=\"lw-eng-hero-ctas\">\n        <a class=\"lw-btn lw-btn--light\" href=\"\/th\/parts-service\/\">Spare parts &amp; parameter sheets<svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\/><polyline points=\"12 5 19 12 12 19\"\/><\/svg><\/a><br \/>\n        <a class=\"lw-btn lw-btn--ghost-on-dark\" href=\"\/th\/contact-us\/\">Talk to a Loway engineer<\/a>\n      <\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TBL-1 MOST COMMON SYMPTOMS ============ --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker lw-center\" style=\"display:block\">Start here<\/p>\n<h2 class=\"lw-center\">Five Symptoms That Cover Most Calls We Get<\/h2>\n<p class=\"lw-lead\" style=\"margin:0 auto 26px\">A filter press has very few ways to tell you something is wrong. The five symptoms below cover most of the requests the Loway service team receives \u2014 and most have a check that takes under an hour, before the spare part is ever ordered.<\/p>\n<div class=\"lw-trouble-ans\">\n<div class=\"lw-trouble-ans-card\">\n          <svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M5 12c2-3 5-3 7 0s5 3 7 0\"\/><path d=\"M5 17c2-3 5-3 7 0s5 3 7 0\"\/><\/svg><\/p>\n<h3>Cloudy filtrate<\/h3>\n<p>Filtrate that should run clear comes out milky or carries fines. <b>Most often<\/b> a torn cloth, a mis-seated cloth or a blinding layer from the wrong polymer. Easy to confirm and easy to fix on site.<\/p>\n<\/p><\/div>\n<div class=\"lw-trouble-ans-card\">\n          <svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"12\" cy=\"12\" r=\"8\"\/><path d=\"M12 4a4 4 0 0 0 0 8 4 4 0 0 1 0 8\"\/><\/svg><\/p>\n<h3>Wet cake \/ low dryness<\/h3>\n<p>Cake comes off wetter than it should, or dryness drifts down over a week. <b>Most often<\/b> a feed-solids change, a polymer-dosing drift, or an end-of-filtration setpoint that cuts the cycle short.<\/p>\n<\/p><\/div>\n<div class=\"lw-trouble-ans-card\">\n          <svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"12\" cy=\"12\" r=\"9\"\/><polyline points=\"12 6 12 12 16 14\"\/><\/svg><\/p>\n<h3>Long cycle time<\/h3>\n<p>Cycle stretches from 30 to 60+ minutes with no change in feed. <b>Most often<\/b> cloth blinding, pump wear, or an under-conditioned feed that the polymer system is not catching.<\/p>\n<\/p><\/div>\n<div class=\"lw-trouble-ans-card\">\n          <svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M12 3l6 6-6 6-6-6 6-6z\"\/><path d=\"M5 19h14\"\/><\/svg><\/p>\n<h3>Plate leaks &amp; drips<\/h3>\n<p>Sludge or filtrate leaking between plates, at the corners, or at the hydraulic ram. <b>Most often<\/b> a worn seal, a misaligned plate stack, or a pressure-relief set too high.<\/p>\n<\/p><\/div>\n<div class=\"lw-trouble-ans-card\">\n          <svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><rect x=\"3\" y=\"6\" width=\"18\" height=\"12\" rx=\"1.5\"\/><line x1=\"3\" y1=\"10\" x2=\"21\" y2=\"10\"\/><line x1=\"7\" y1=\"14\" x2=\"10\" y2=\"14\"\/><\/svg><\/p>\n<h3>Cloth blinding<\/h3>\n<p>Cloth blocks within a few cycles and the differential pressure climbs. <b>Most often<\/b> a polymer overdose, a feed that is too fine, or a wash-water pressure that has dropped below design.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TBL-2 TRIAGE FLOW ============ --><\/p>\n<section class=\"lw-sec lw-sec--alt\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker lw-center\" style=\"display:block\">Triage flow<\/p>\n<h2 class=\"lw-center\">What to Check First, in What Order<\/h2>\n<p class=\"lw-lead\" style=\"margin:0 auto 22px;text-align:center\">Before changing a parameter, changing a cloth or calling the service team, walk through the same five checks. Most issues are caught at step 2 or 3.<\/p>\n<div class=\"lw-steps\">\n<div class=\"lw-step\"><span class=\"lw-step-n\">1<\/span><b class=\"lw-step-h\"><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><rect x=\"3\" y=\"4\" width=\"18\" height=\"16\" rx=\"2\"\/><line x1=\"7\" y1=\"9\" x2=\"17\" y2=\"9\"\/><line x1=\"7\" y1=\"13\" x2=\"14\" y2=\"13\"\/><\/svg>Confirm the symptom<\/b><\/p>\n<p>Write down the symptom, the time it started and what changed that week. A one-line note now saves a guess later \u2014 feed, polymer, throughput, or shift.<\/p>\n<\/div>\n<div class=\"lw-step\"><span class=\"lw-step-n\">2<\/span><b class=\"lw-step-h\"><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><circle cx=\"11\" cy=\"11\" r=\"7\"\/><line x1=\"20\" y1=\"20\" x2=\"16.5\" y2=\"16.5\"\/><\/svg>Read the trend log<\/b><\/p>\n<p>Look at the last 50 cycles on the HMI: feed pressure profile, end-of-filtration, squeeze, air-blow, cloth \u0394P. The curve tells you which phase is the problem.<\/p>\n<\/div>\n<div class=\"lw-step\"><span class=\"lw-step-n\">3<\/span><b class=\"lw-step-h\"><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M3 7h12a4 4 0 0 1 0 8H6\"\/><polyline points=\"3 12 6 9 6 15\"\/><\/svg>Check the consumables<\/b><\/p>\n<p>Polymer concentration and dose, wash-water pressure, cloth-wash interval, seal condition. Half the time the fix is in this step alone.<\/p>\n<\/div>\n<div class=\"lw-step\"><span class=\"lw-step-n\">4<\/span><b class=\"lw-step-h\"><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polygon points=\"3 11 22 2 13 21 11 13 3 11\"\/><\/svg>Run one controlled cycle<\/b><\/p>\n<p>One cycle at the original setpoints, one at adjusted setpoints. Compare dryness, cycle time and filtrate clarity. Now you have data, not impressions.<\/p>\n<\/div>\n<div class=\"lw-step\"><span class=\"lw-step-n\">5<\/span><b class=\"lw-step-h\"><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><path d=\"M21 15a4 4 0 0 1-4 4H7l-4 4V7a4 4 0 0 1 4-4h10a4 4 0 0 1 4 4z\"\/><\/svg>Call the service team<\/b><\/p>\n<p>If the symptom persists, share the trend log and the cycle notes. Remote support can usually point to the part; the spare is shipped the same week.<\/p>\n<\/div><\/div>\n<p class=\"lw-trouble-cycle-note\">The five checks above are the same workflow Loway service uses on a service call. The difference is you have already done the first three before we arrive \u2014 <a href=\"\/th\/parts-service\/\">spare parts and parameter sheets are listed here<\/a>.<\/p>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TBL-3 CLOTH-RELATED SYMPTOMS ============ --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker\" style=\"display:block\">Cloth-related symptoms<\/p>\n<h2>When the Cloth Is the Story<\/h2>\n<div class=\"lw-trouble-split\">\n<figure class=\"lw-trouble-media\">\n          <img decoding=\"async\" loading=\"lazy\" alt=\"Close-up of a Loway filter press cloth with corner seam, mounted on a blue plate\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/03\/filter-cloth-non-woven-768x768.png\"><figcaption>A cloth on the plate, with the corner seam visible \u2014 the same view an operator has when checking a blinding or tear at end of shift.<\/figcaption><\/figure>\n<div>\n<ul class=\"lw-trouble-checks\">\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b><span class=\"lw-trouble-tag\">TBL-3.1<\/span>Cloudy filtrate<\/b> \u2014 first inspect the cloth for tears, lifted seams and mis-seating around the feed port. A single torn corner will turn a clear filtrate cloudy in one cycle.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b><span class=\"lw-trouble-tag\">TBL-3.2<\/span>Rising differential pressure<\/b> \u2014 the cloth is blinding, almost always from an over-dosed polymer or a feed that is finer than the cloth grade. Try a wash cycle first, then a polymer audit.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b><span class=\"lw-trouble-tag\">TBL-3.3<\/span>Cloth washing not effective<\/b> \u2014 check wash-water pressure at the manifold (the design point is on the parameter sheet) and the wash-nozzle pattern; a single blocked nozzle blinds a column of plates.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b><span class=\"lw-trouble-tag\">TBL-3.4<\/span>Short cloth life<\/b> \u2014 most cloth changeouts ahead of schedule trace back to feed pressure spikes or wash-water pressure too high. The cloth log and the trend log together tell the story.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b><span class=\"lw-trouble-tag\">TBL-3.5<\/span>Wrong cloth grade installed<\/b> \u2014 switching suppliers or switching sludge without re-checking the cloth spec is a common cause of slow cycles and cloudy filtrate. Confirm the grade against the original parameter sheet.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b><span class=\"lw-trouble-tag\">TBL-3.6<\/span>Cloth-wash interval too long<\/b> \u2014 the cycle counter in the PLC tracks cycles since last wash; if the interval drifted, the cloth will blind well before the next scheduled wash.<\/span><\/li>\n<\/ul>\n<p class=\"lw-trouble-note\">A blinded cloth is the single most common cause of long cycles and wet cake. The first action is always <b>wash, then audit the polymer<\/b> \u2014 and only then consider replacement. <a href=\"\/th\/parts-service\/\">Cloth specs and replacement sets \u2192<\/a><\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TBL-4 PLATE & SEAL SYMPTOMS ============ --><\/p>\n<section class=\"lw-sec lw-sec--alt\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker\" style=\"display:block\">Plate &amp; seal symptoms<\/p>\n<h2>When the Plates Are the Story<\/h2>\n<div class=\"lw-trouble-split\">\n<div>\n<ul class=\"lw-trouble-checks\">\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b>Sludge leaking between plates<\/b> \u2014 usually a worn seal or a plate that has shifted out of the stack. Open the press, find the wet plate face, and check the seal groove and the alignment of the plate behind.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b>Filtrate leaking at the corner<\/b> \u2014 the cloth is not seated at the corner, the corner seam is torn, or the corner port O-ring has failed. A localised drip is almost always a single plate.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b>Hydraulic pressure creeping up to hold closing force<\/b> \u2014 usually a seal on the ram or the cylinder; check the seal kit on the parameter sheet before ordering a new ram.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b>Plate-shifter alarm at end of cycle<\/b> \u2014 the shifter carriage is binding or a limit switch has drifted. Listen for a stalled motor; the limit-switch position is set against the parameter sheet, not by feel.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b>Cake not dropping cleanly<\/b> \u2014 cake stick is usually a dryness problem (the cake is too wet) or a cloth that has glazed over. Long-term fix: review the polymer, then re-check the cloth grade.<\/span><\/li>\n<li><svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg><span class=\"lw-trouble-check-txt\"><b>Plate face wear or cracking<\/b> \u2014 impact damage during a plate-shift fault, or running above the design pressure. Replace the plate; a worn plate damages the cloth on the next cycle.<\/span><\/li>\n<\/ul>\n<p class=\"lw-trouble-note\">A leaking plate and a tearing cloth can look similar at first glance. The fast way to tell is to <b>open the press and look at the plate face and the cloth corner<\/b> \u2014 the difference is obvious in two minutes, and saves replacing the wrong part. <a href=\"\/th\/engineering\/operating-parameters\/\">Re-read the operating parameters \u2192<\/a><\/p>\n<\/p><\/div>\n<figure class=\"lw-trouble-media\">\n          <img decoding=\"async\" loading=\"lazy\" alt=\"A range of Loway polypropylene filter plates in different sizes, showing the sealing surfaces and feed ports\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2026\/09\/loway-filter-press-plates-768x380.jpg\"><figcaption>The plate set on a Loway filter press \u2014 every plate carries a seal, a feed port and a corner discharge. These are the surfaces a service walk-around inspects first.<\/figcaption><\/figure>\n<\/p><\/div>\n<p>      <!-- TBL-4 plate detail gallery: 4 single-plate close-ups --><\/p>\n<div class=\"lw-trouble-gallery\" aria-label=\"Plate and seal close-up reference\">\n<div class=\"lw-trouble-gallery-item\">\n          <img decoding=\"async\" class=\"lw-trouble-gallery-img\" loading=\"lazy\" alt=\"Membrane and recessed-chamber plate detail, showing the squeeze diaphragm and feed port geometry\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/Loway-membrane-filter-plates-scaled.jpg\"><\/p>\n<div class=\"lw-trouble-gallery-body\">\n<p class=\"lw-trouble-gallery-h\"><span class=\"lw-trouble-tag\">TBL-4.1<\/span>Membrane &#038; recessed plates<\/p>\n<p class=\"lw-trouble-gallery-p\">When sludge leaks between plates, open the stack and compare the membrane face with a recessed chamber. A wrinkled diaphragm squeezes unevenly and wets the cake on the cycle after.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-trouble-gallery-item\">\n          <img decoding=\"async\" class=\"lw-trouble-gallery-img\" loading=\"lazy\" alt=\"Polypropylene plate corner with feed port and seal groove\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/06\/polypropylene-plate-chamber-filter-press-manufacturer.png\"><\/p>\n<div class=\"lw-trouble-gallery-body\">\n<p class=\"lw-trouble-gallery-h\"><span class=\"lw-trouble-tag\">TBL-4.2<\/span>Corner seal &#038; feed port<\/p>\n<p class=\"lw-trouble-gallery-p\">A localised drip from the corner is almost always the seal groove or the corner O-ring. Run a finger around the rim \u2014 a hard, shiny groove means the seal has compressed and needs replacement.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-trouble-gallery-item\">\n          <img decoding=\"async\" class=\"lw-trouble-gallery-img\" loading=\"lazy\" alt=\"Plate pack being lifted by crane during a service walk-around\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/11\/Loway-factory-Precision-Manufacturing-filter-plates-high-quality-manufacturing-process.png\"><\/p>\n<div class=\"lw-trouble-gallery-body\">\n<p class=\"lw-trouble-gallery-h\"><span class=\"lw-trouble-tag\">TBL-4.3<\/span>Plate face &#038; alignment<\/p>\n<p class=\"lw-trouble-gallery-p\">Plate-shifter alarms usually start with one plate drifting out of the stack. Lift the pack, re-seat the plate on the suspension lugs, and check the alignment pin before the next closing.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-trouble-gallery-item\">\n          <img decoding=\"async\" class=\"lw-trouble-gallery-img\" loading=\"lazy\" alt=\"PP filter plate stacks in the factory warehouse with a single plate in the foreground\" src=\"https:\/\/lowayequipment.com\/wp-content\/uploads\/2025\/01\/loway-factory-filter-press-equipment-plates.png\"><\/p>\n<div class=\"lw-trouble-gallery-body\">\n<p class=\"lw-trouble-gallery-h\"><span class=\"lw-trouble-tag\">TBL-4.4<\/span>Spare stock &#038; replacement<\/p>\n<p class=\"lw-trouble-gallery-p\">Keep two spare plates per size on the shelf, with the seal kit pre-fitted. A worn face damages the cloth on the next cycle \u2014 the spare stops the cascade before it starts.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<\/p><\/div>\n<p class=\"lw-trouble-gallery-hint\">Four close-ups above \u2014 match the symptom to the surface, then check the parameter sheet before ordering. <a href=\"\/th\/parts-service\/\">Spare plates and seal kits \u2192<\/a><\/p>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TBL-5 WHEN TO CALL (navy band) ============ --><\/p>\n<section class=\"lw-sec\" style=\"padding-bottom:0\">\n<div class=\"lw-container\">\n<div class=\"lw-band\">\n<p class=\"lw-kicker\" style=\"display:block\">When to call the service team<\/p>\n<h2>Three Rules of Thumb Before You Call<\/h2>\n<p class=\"lw-band-sub\">Most calls are solved without a service visit. The three rules below are the ones Loway service uses to decide whether a remote fix, a site visit or a spare-part dispatch is the right answer. The same rules help you decide what to escalate.<\/p>\n<div class=\"lw-trouble-stack\">\n<div class=\"lw-trouble-stack-card\">\n<p class=\"lw-trouble-stack-h\">Document first<\/p>\n<p class=\"lw-trouble-stack-v\">Note the symptom, the time it started, the trend-log screenshot and the consumables log. <b>A documented call is a short call<\/b> \u2014 and a faster fix.<\/p>\n<\/p><\/div>\n<div class=\"lw-trouble-stack-card\">\n<p class=\"lw-trouble-stack-h\">Check the consumables<\/p>\n<p class=\"lw-trouble-stack-v\">Polymer concentration, polymer dose, wash-water pressure, cloth-wash interval. <b>Half of all service calls end at this step<\/b>, before the service team is mobilised.<\/p>\n<\/p><\/div>\n<div class=\"lw-trouble-stack-card\">\n<p class=\"lw-trouble-stack-h\">Know the parameter sheet<\/p>\n<p class=\"lw-trouble-stack-v\">Setpoints, seal kits, cloth grade, plate stack \u2014 the parameter sheet is the contract. <b>Without it, a fix is a guess<\/b>; with it, a fix is a five-minute job.<\/p>\n<\/p><\/div>\n<\/p><\/div>\n<div class=\"lw-btn-row\">\n          <a class=\"lw-btn lw-btn--light\" href=\"\/th\/parts-service\/\">Spare parts &amp; parameter sheets<svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\/><polyline points=\"12 5 19 12 12 19\"\/><\/svg><\/a><br \/>\n          <a class=\"lw-btn lw-btn--ghost-on-dark\" href=\"\/th\/contact-us\/\">Talk to a Loway engineer<\/a>\n        <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TBL-6 FAQ ============ --><\/p>\n<section class=\"lw-sec\">\n<div class=\"lw-container\">\n<p class=\"lw-kicker lw-center\" style=\"display:block\">Troubleshooting FAQ<\/p>\n<h2 class=\"lw-center\">Troubleshooting, Answered<\/h2>\n<div class=\"lw-faq\" style=\"max-width:860px;margin:0 auto;text-align:left\">\n<details>\n<summary>What is the most common filter press problem?<\/summary>\n<div class=\"lw-faq-a\">Cloudy filtrate and a wet cake, in roughly equal measure. Both are usually traced back to the same upstream change \u2014 feed solids, polymer dose or cloth condition. The triage flow on this page finds the cause in most cases without a service visit.<\/div>\n<\/details>\n<details>\n<summary>Why is my cycle time getting longer every shift?<\/summary>\n<div class=\"lw-faq-a\">The cloth is blinding. Check the wash-water pressure, the cloth-wash interval, and the polymer concentration. A blinding cloth can usually be recovered with a proper wash; if it has blinded hard, the cloth is at the end of its life and a replacement set is faster than chasing the symptom.<\/div>\n<\/details>\n<details>\n<summary>My filtrate is cloudy but the cake looks fine. What gives?<\/summary>\n<div class=\"lw-faq-a\">Almost always a torn cloth, a mis-seated cloth or a worn corner seam. Open the press and inspect the cloth on the plate that aligns with the cloudy filtrate port. A single torn corner is a five-minute replacement, not a service call.<\/div>\n<\/details>\n<details>\n<summary>The hydraulic pressure keeps climbing. Is that a problem?<\/summary>\n<div class=\"lw-faq-a\">Membrane presses raise the hydraulic pressure during the squeeze phase \u2014 that is normal. A continuous climb in the closing-phase pressure is not. It points to a ram seal, a cylinder seal or a pressure-relief that is set too high. Check against the parameter sheet before adding more hydraulic pressure.<\/div>\n<\/details>\n<details>\n<summary>How do I know whether to call service or replace the part myself?<\/summary>\n<div class=\"lw-faq-a\">If the part is on the parameter sheet, the symptom is in the trend log, and the consumables check is clean \u2014 replace it yourself with the spare on the shelf. If the symptom is across multiple systems (cloth + plate + hydraulic) or the trend log is inconsistent, call service. Sharing the trend-log screenshot at the first call cuts the diagnosis time considerably.<\/div>\n<\/details>\n<details>\n<summary>Can I run the press at a higher pressure to push through a slow cycle?<\/summary>\n<div class=\"lw-faq-a\">Not as a habit. Past the design pressure, the gains in flow rate shrink fast and cloth life shortens. A bench test plots the curve so you can pick the operating point where each extra bar stops paying back \u2014 and the page on operating parameters sets that out in detail.<\/div>\n<\/details>\n<details>\n<summary>Do these troubleshooting steps apply to belt and screw presses too?<\/summary>\n<div class=\"lw-faq-a\">Partially \u2014 the symptoms overlap (wet cake, long cycles), but the controls are different (belt speed, screw speed, flocculation point, head pressure). The selection page sets out which technology fits which feed; if you are running belt or screw, the same triage principles apply but the parts list is different.<\/div>\n<\/details><\/div>\n<\/p><\/div>\n<\/section>\n<p>  <!-- ============ TBL-7 CTA BAND ============ --><\/p>\n<section class=\"lw-sec\" style=\"padding-top:0\">\n<div class=\"lw-container\">\n<div class=\"lw-band\">\n<p class=\"lw-kicker\" style=\"display:block\">Need a hand?<\/p>\n<h2>Send Us the Trend Log, Get a Fix<\/h2>\n<p class=\"lw-band-sub\">Share a screenshot of the trend log, the symptom and the consumables used this week. The Loway service team will come back with the most likely cause, the part to check and the spare to ship \u2014 usually within one business day.<\/p>\n<div class=\"lw-btn-row\" style=\"margin-top:10px\">\n          <a class=\"lw-btn lw-btn--light\" href=\"\/th\/contact-us\/\">Talk to a Loway engineer<svg class=\"lw-ic\" viewbox=\"0 0 24 24\" aria-hidden=\"true\" focusable=\"false\"><line x1=\"5\" y1=\"12\" x2=\"19\" y2=\"12\"\/><polyline points=\"12 5 19 12 12 19\"\/><\/svg><\/a><br \/>\n          <a class=\"lw-btn lw-btn--ghost-on-dark\" href=\"\/th\/parts-service\/\">Spare parts &amp; parameter sheets<\/a>\n        <\/div>\n<\/p><\/div>\n<\/p><\/div>\n<\/section>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>Engineering Resources \u00b7 Troubleshooting When something is off Filter Press Troubleshooting: Symptoms, Checks and the Fix That Usually Works A filter press does not fail in mysterious ways \u2014 it fails in cloud filtrate, wet cake, long cycles, plate leaks and cloth blinding, and most of these have a short, common-sense cause you can check [&hellip;]<\/p>\n","protected":false},"author":3,"featured_media":0,"parent":3590,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3746","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Filter Press Troubleshooting Guide | Loway Equipment<\/title>\n<meta name=\"description\" content=\"Filter press problems - cloudy filtrate, wet cake, long cycles, plate leaks or cloth blinding. 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