{"product_id":"liftmaster-k75-50893","title":"LiftMaster K75-50893 Safety Interlock Assembly — Legacy SL3000","description":"\u003cp\u003e\u003cstrong\u003eThe LiftMaster K75-50893 is the safety-and-interlock assembly identified in the documented legacy SL3000UL manual-crank service arrangement. The source also calls it a safety interlink kit. Select it using the exact operator generation and installed crank\/interlock mechanism, because the SL3000 name spans different internal designs. This is a service component within the manual-operation arrangement, not a photo eye, reversing edge or complete manual-crank conversion. A failed or bypassed interlock needs qualified diagnosis before the operator is returned to normal use.\u003c\/strong\u003e\u003c\/p\u003e\u003ch2\u003eCompatibility — Models, Versions and Exclusions\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel or selection point\u003c\/th\u003e\n\u003cth\u003eCompatibility requirement\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocumented legacy SL3000UL mechanism\u003c\/td\u003e\n\u003ctd\u003eMatch the assembly in the actual operator service drawing.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eLater SL3000U \/ UL revisions\u003c\/td\u003e\n\u003ctd\u003eCheck the exact generation; a similar model name is insufficient.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManual crank or housing damage\u003c\/td\u003e\n\u003ctd\u003eDifferent repair components may also be required.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePhoto eyes and sensing edges\u003c\/td\u003e\n\u003ctd\u003eSeparate protection functions; not replaced by this assembly.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOther gate operators\u003c\/td\u003e\n\u003ctd\u003eNo universal interlock-kit fit established.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eInspect the Manual-Operation Mechanism as a System\u003c\/h2\u003e\u003cp\u003eThe manufacturer parts breakdown identifies the interlock assembly separately from the crank and surrounding mechanism. Have the technician inspect the engagement, mounting and electrical portions of the installed arrangement before selecting the repair. A damaged crank housing or misaligned actuator can affect the interlock function, so replacing a switch-related assembly alone may leave the original problem unresolved.\u003c\/p\u003e\u003cp\u003eRecord the complete model and photograph the existing assembly before service. Follow the operator’s exact manual-operation and isolation instructions; the presence of an interlock is not a substitute for disconnecting power during repair. After installation, verify the intended interlock response and manual-to-powered operating sequence using the manufacturer procedure. Do not improvise wiring or defeat the interlock to keep a malfunctioning gate running.\u003c\/p\u003e\u003ch2\u003eSpecifications and Product Identification\u003c\/h2\u003e\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eSpecification\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003ePart number\u003c\/td\u003e\n\u003ctd\u003eK75-50893\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eManufacturer description\u003c\/td\u003e\n\u003ctd\u003eSafety and interlock assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSource terminology\u003c\/td\u003e\n\u003ctd\u003eSafety interlink kit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDocumented family\u003c\/td\u003e\n\u003ctd\u003eLegacy SL3000UL arrangement\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eRelated separate crank reference\u003c\/td\u003e\n\u003ctd\u003eQ028\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSelection basis\u003c\/td\u003e\n\u003ctd\u003eExact generation and installed manual-crank mechanism\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\u003ch2\u003eBefore Ordering\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eConfirm the full SL3000 model and production generation.\u003c\/li\u003e\n\u003cli\u003eMatch K75-50893 in the applicable manual-crank parts drawing.\u003c\/li\u003e\n\u003cli\u003eInspect the crank, housing, mounting and electrical connections.\u003c\/li\u003e\n\u003cli\u003eConfirm current kit contents and the required functional test sequence.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003ePackage Contents and Separate Requirements\u003c\/h2\u003e\u003cp\u003eThis listing identifies the safety-and-interlock service assembly. A manual crank, crank housing, complete operator drive, main board and external entrapment-protection devices are not promised as included. Confirm the current carton for switches, brackets, connections and mounting pieces before planning the repair. A drawing of the surrounding mechanism establishes component relationships, not a guarantee that every illustrated part accompanies this kit.\u003c\/p\u003e\u003ch2 class=\"safety-warning\"\u003eSafety Warnings — Read Before Installation or Service\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eWARNING: Unexpected powered or uncontrolled gate movement can cause serious injury or death. Interlock diagnosis and replacement require a qualified gate technician.\u003c\/li\u003e\n\u003cli\u003eDisconnect all applicable power and secure the gate before work on the crank or interlock assembly. Follow the model-specific manual-operation procedure.\u003c\/li\u003e\n\u003cli\u003eNever bypass the interlock or alter its wiring to permit operation with a fault. Keep hands clear of the crank and drive during supervised testing.\u003c\/li\u003e\n\u003cli\u003eVerify interlock behavior, normal travel, reversal and all required protection devices before returning the gate to use.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eRelated Products and Important Differences\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmrrul-monitored-retro-reflective-photo-eye\"\u003eLMRRUL monitored photo eye\u003c\/a\u003e — a separate protection option only where the exact operator and control revision approve it; not a universal legacy retrofit.\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"https:\/\/garage-doorparts.com\/products\/liftmaster-lmwekitu-monitored-wireless-edge-kit-for-gate-operators\"\u003eLMWEKITU monitored wireless edge kit\u003c\/a\u003e — a separate edge communication system for approved controls and resistive edges; not a replacement for this mechanical or electrical service part.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\u003ch3\u003eIs this a complete manual-crank kit?\u003c\/h3\u003e\u003cp\u003eNo complete crank conversion is promised. Match the individual assembly and any separately needed components.\u003c\/p\u003e\u003ch3\u003eDoes it replace a photo eye or edge?\u003c\/h3\u003e\u003cp\u003eNo. Those devices provide separate protection functions.\u003c\/p\u003e\u003ch3\u003eCan I choose it from the SL3000 name alone?\u003c\/h3\u003e\u003cp\u003eNo. Check the exact generation and installed mechanism.\u003c\/p\u003e\u003ch3\u003eMay the interlock be bypassed temporarily?\u003c\/h3\u003e\u003cp\u003eNo. Have the fault corrected and the intended interlock function verified before normal use.\u003c\/p\u003e\u003ch2\u003eNeed Help Confirming the Right Product?\u003c\/h2\u003e\u003cp\u003e\u003ca href=\"https:\/\/garage-doorparts.com\/pages\/contact\"\u003eContact Garage-DoorParts.com before ordering\u003c\/a\u003e. Send the full equipment model, readable part labels and photographs of the installed assembly. Include the dimensions, electrical configuration or accessory details relevant to your project so the listing can be checked against the actual installation.\u003c\/p\u003e","brand":"Controlled products","offers":[{"title":"Default Title","offer_id":60655793602846,"sku":"K75-50893","price":98.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0978\/2781\/5710\/files\/k75-50893.jpg?v=1793140029","url":"https:\/\/garage-doorparts.com\/products\/liftmaster-k75-50893","provider":"garage-doorparts.com","version":"1.0","type":"link"}