{"product_id":"sauermann-si-51-peristaltic-condensate-pump","title":"Sauermann SI-51 Peristaltic Condensate Pump for Air Conditioning Systems","description":"\u003ch2\u003eSauermann SI-51 Peristaltic Condensate Pump | SI51CE01UN23\u003c\/h2\u003e\u003cp\u003eThe Sauermann SI-51 is a peristaltic condensate pump designed for all types of air conditioning units up to 8kW. It uses two thermal probes (temperature differential detection) to activate automatically when the air conditioner turns on — no float switch required. The SI-51 is the direct replacement for the discontinued Sauermann PE5100.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003e⚠️ Important:\u003c\/strong\u003e The SI-51 is \u003cstrong\u003enot compatible with reversible or inverter systems\u003c\/strong\u003e as it must not be used in continuous operation. For inverter or reversible systems, see the \u003ca href=\"\/fr\/products\/sauermann-si-52-peristaltic-condensate-pump\"\u003eSauermann SI-52\u003c\/a\u003e.\u003c\/p\u003e\u003ch3\u003eKey Features\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePeristaltic pump — quiet, vibration-free, self-priming operation\u003c\/li\u003e\n\u003cli\u003eTemperature differential detection — 2 thermal probes, activates at ≥6°C differential\u003c\/li\u003e\n\u003cli\u003eRuns 4 minutes after temperature differential falls below 6°C\u003c\/li\u003e\n\u003cli\u003e12m maximum discharge head | 2m maximum suction head\u003c\/li\u003e\n\u003cli\u003e6 L\/h constant flow rate (regardless of discharge or suction head)\u003c\/li\u003e\n\u003cli\u003eIP55 protection — suitable for unventilated areas\u003c\/li\u003e\n\u003cli\u003e≤30 dBA — ultra-quiet operation\u003c\/li\u003e\n\u003cli\u003eEasy-open front panel — tool-free tube replacement\u003c\/li\u003e\n\u003cli\u003eGlass fuse replaceable in one step (standard 5×20 cartridge)\u003c\/li\u003e\n\u003cli\u003eCompact: L85 × W108 × H122mm\u003c\/li\u003e\n\u003cli\u003eCE \u0026amp; UKCA certified | RoHS \u0026amp; WEEE compliant | Made in France\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSI51CE01UN23\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Flow Rate\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e6 L\/h (constant)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Suction Head\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e2m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMax Discharge Head\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e12m\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDetection Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTemperature differential — 2 thermal probes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eActivation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eTemp diff ≥6°C ON | Runs 4 min after \u0026lt;6°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMains Supply\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e230V~ 50\/60Hz — 8W\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSound Level\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e≤30 dBA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eIP Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eIP55\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003ePump Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eL85 × W108 × H122mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eOperating \u0026amp; Storage Temp\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e+2°C to +45°C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eWeight (with packaging)\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e0.95kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSafety Standards\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCE \u0026amp; UKCA\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eCountry of Origin\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFrance\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eKit Contents\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003ePeristaltic pump SI-51\u003c\/li\u003e\n\u003cli\u003e1.7m cable including 2 wires for power supply (P \u0026amp; N)\u003c\/li\u003e\n\u003cli\u003e2 thermal probes with 3.5m cable (red cap = ambient air, blue cap = fresh air)\u003c\/li\u003e\n\u003cli\u003eEasy 2-screw sliding plastic bracket\u003c\/li\u003e\n\u003cli\u003eØ15mm to Ø6mm adaptor + sleeve (ACC00927)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eWall-mounted split AC units up to 8kW\u003c\/li\u003e\n\u003cli\u003eCeiling suspended units\u003c\/li\u003e\n\u003cli\u003eComputer room air conditioning\u003c\/li\u003e\n\u003cli\u003eDucted systems\u003c\/li\u003e\n\u003cli\u003eIdeal for dusty or chemical environments (bakeries, hairdressers, hotels)\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eSI-50 vs SI-51 vs SI-52 — Which Do I Need?\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eDetection\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eInverter\/Reversible?\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/fr\/products\/sauermann-si-50-peristaltic-condensate-pump\"\u003eSI-50\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eCompressor live signal\u003c\/td\u003e\n\u003ctd\u003e❌ Not compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/fr\/products\/sauermann-si-51-peristaltic-condensate-pump\"\u003eSI-51\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eThermal probes (temp differential)\u003c\/td\u003e\n\u003ctd\u003e❌ Not compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003ca href=\"\/fr\/products\/sauermann-si-52-peristaltic-condensate-pump\"\u003eSI-52\u003c\/a\u003e\u003c\/td\u003e\n\u003ctd\u003eFloat switch\u003c\/td\u003e\n\u003ctd\u003e✅ Compatible\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ch3\u003eReplaces PE5100\u003c\/h3\u003e\u003cp\u003eThe SI-51 is the direct successor to the discontinued \u003ca href=\"\/fr\/products\/sauermann-pe-5100-peristaltic-condensate-pump-for-air-conditioning\"\u003eSauermann PE5100\u003c\/a\u003e. Note: replacement heads (ACC00954) and hoses (ACC00953) for the SI-50\/51\/52 are \u003cstrong\u003enot backward-compatible\u003c\/strong\u003e with the older PE series.\u003c\/p\u003e\u003ch3\u003eCompatible Accessories\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eACC00954 — Replacement head for SI-50, SI-51, SI-52\u003c\/li\u003e\n\u003cli\u003eACC00953 — Replacement hose for SI-50, SI-51, SI-52\u003c\/li\u003e\n\u003cli\u003eACC00927 — Multi-diameter reducing adaptor (Ø15mm to Ø6mm)\u003c\/li\u003e\n\u003cli\u003eACC00919 — 6× self-sealing fittings for Ø6mm (1\/4\") hose\u003c\/li\u003e\n\u003cli\u003eACC00909 — Clear PVC hose Ø6mm (5m)\u003c\/li\u003e\n\u003cli\u003eACC00910 — Clear PVC hose Ø6mm (50m)\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/fr\/collections\/condensate-pump-accessories\"\u003eBrowse all Condensate Pump Accessories\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eAlso in the Sauermann Peristaltic Range\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/fr\/products\/sauermann-si-50-peristaltic-condensate-pump\"\u003eSauermann SI-50\u003c\/a\u003e — compressor signal detection, not for inverter\/reversible\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/fr\/products\/sauermann-si-52-peristaltic-condensate-pump\"\u003eSauermann SI-52\u003c\/a\u003e — float switch detection, compatible with inverter\/reversible\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\u003cdl\u003e\n\u003cdt\u003e\u003cstrong\u003eIs the SI-51 a direct replacement for the PE5100?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The SI-51 uses the same temperature differential (thermal probe) detection method as the PE5100 and is Sauermann's recommended direct replacement.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan I use PE5100 spare parts (tubes, heads) on the SI-51?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo. The replacement heads (ACC00954) and hoses (ACC00953) for the SI-50\/51\/52 are not backward-compatible with the older PE series. If your PE5100 head or tube fails, Sauermann recommends replacing the complete unit with an SI-51.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eCan the SI-51 be used with inverter or reversible AC systems?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eNo. The SI-51 must not be used in continuous operation and is incompatible with reversible and inverter systems. Use the \u003ca href=\"\/fr\/products\/sauermann-si-52-peristaltic-condensate-pump\"\u003eSI-52\u003c\/a\u003e instead.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eWhat is the difference between the SI-51 and the SI-50?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eThe SI-50 uses compressor live signal detection. The SI-51 uses thermal probes (temperature differential) and activates automatically based on temperature change rather than a wired compressor signal.\u003c\/dd\u003e\n\u003cdt\u003e\u003cstrong\u003eDoes the SI-51 work on UK 230V supply?\u003c\/strong\u003e\u003c\/dt\u003e\n\u003cdd\u003eYes. The SI-51 runs on 230V~ 50\/60Hz standard UK mains supply.\u003c\/dd\u003e\n\u003c\/dl\u003e\u003cp\u003eBrowse our full range of \u003ca href=\"\/fr\/collections\/peristaltic-condensate-pumps\"\u003eperistaltic condensate pumps\u003c\/a\u003e and \u003ca href=\"\/fr\/collections\/sauermann\"\u003eSauermann products\u003c\/a\u003e.\u003c\/p\u003e","brand":"Sauermann","offers":[{"title":"Default Title","offer_id":64119035658617,"sku":"SI-51","price":144.9,"currency_code":"GBP","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/0158\/3481\/files\/IMA_SI51CE01UN_LEFT_WIRE_01.png?v=1785472133","url":"https:\/\/www.airconspares.com\/fr\/products\/sauermann-si-51-peristaltic-condensate-pump","provider":"Airconspares.com","version":"1.0","type":"link"}