{"product_id":"amerex-oem-mechanical-release-module-28318","title":"Amerex OEM Mechanical Release Module - 28318","description":"\u003cbody\u003e\n\n\n\u003cmeta charset=\"UTF-8\"\u003e\n\u003cmeta name=\"viewport\" content=\"width=device-width, initial-scale=1.0\"\u003e\n\u003ctitle\u003eAmerex OEM Mechanical Release Module | 28318 | For Amerex KP Kitchen Suppression Systems\u003c\/title\u003e\n\u003cstyle\u003e\n  .product-section { max-width: 100%; margin: 2rem 0; font-family: Arial, sans-serif; color: #333; }\n  .accordion-item { border-bottom: 1px solid #ddd; }\n  .accordion-header { display: flex; justify-content: space-between; padding: 2rem 0; cursor: pointer; background: none; border: none; width: 100%; text-align: left; color: #333; }\n  .accordion-header:hover, .accordion-header:focus { color: #333; background: none; outline: none; }\n  .accordion-title { font-size: 1.5rem; font-weight: 500; }\n  .accordion-icon { font-size: 1.5rem; }\n  .accordion-item.active .accordion-icon { transform: rotate(180deg); }\n  .accordion-content { max-height: 0; overflow: hidden; }\n  .accordion-item.active .accordion-content { max-height: none; }\n  .accordion-content-inner { font-size: 1.4rem; line-height: 1.7; color: #555; padding-bottom: 2rem; }\n  .accordion-content-inner p { margin: 0 0 1rem 0; }\n  .accordion-content-inner ul { margin: 0 0 1rem 0; padding-left: 2rem; }\n  .accordion-content-inner li { margin-bottom: 0.4rem; }\n  .accordion-content-inner h3 { font-size: 1.4rem; font-weight: 600; color: #333; margin: 1.5rem 0 0.5rem 0; }\n  .specs-table { width: 100%; border-collapse: collapse; }\n  .specs-table th, .specs-table td { border: 1px solid #ddd; padding: 0.75rem 1rem; font-size: 1.4rem; text-align: left; }\n  .specs-table th { background-color: #f5f5f5; font-weight: 600; color: #333; }\n\u003c\/style\u003e\n\n\n\u003cdiv class=\"product-section\"\u003e\n\n  \u003cdiv class=\"accordion-item\"\u003e\n    \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eProduct Overview\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n    \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n      \u003cp\u003eThe Amerex Mechanical Release Module, or MRM, is the control head of the Amerex KP Restaurant Fire Suppression System, the pre-engineered wet chemical system that protects commercial kitchen hoods, ducts, plenums, and dedicated cooking appliances. This kit (P\/N 28318) is the OEM replacement module itself, packaged with the mounting bracket (P\/N 28226) and backplate (P\/N 11977) needed to install it. The MRM is the component that decides whether a fire event triggers a full system discharge, so it must be the correct OEM part for the installed KP system, not a generic substitute.\u003c\/p\u003e\n      \u003cp\u003eThe MRM is a spring-loaded mechanical device with a mechanical input and electrical, mechanical, or pneumatic outputs. A single MRM can actuate from one to ten agent cylinder and discharge valve assemblies using a single nitrogen cartridge, making it the central decision point for systems protecting anywhere from a single fryer station to a full multi-appliance hood line. The enclosure includes a system status indicator and a window for visually verifying nitrogen cylinder pressure during inspection, along with provisions for tamper seals after testing or service and knockouts for conduit on three sides.\u003c\/p\u003e\n      \u003ch3\u003eHow the MRM Triggers a System Discharge\u003c\/h3\u003e\n      \u003cp\u003eIn automatic operation, fusible links positioned throughout the detection network are connected by cable back to the MRM. When ambient heat at a protected appliance reaches the fusible link's rated temperature, the link separates, releasing tension on the detection cable. This tension release trips the MRM's spring-loaded mechanism, which punctures the nitrogen cartridge. The resulting nitrogen pressure opens the valves on the agent cylinders, sending Amerex KP liquid agent through the discharge piping and out the nozzles over the hood, duct, plenum, and appliance surfaces. The same MRM can also be triggered manually from a remote pull station, typically located 10 to 20 feet from the cooking appliances, providing a manual override independent of the automatic detection network.\u003c\/p\u003e\n      \u003cp\u003eOn discharge, a piston in the MRM also pulls a cable connected to the latch on the system's mechanical gas shutoff valve, releasing the latch and allowing a spring to close the valve and cut fuel to the protected gas-fired appliances. The MRM additionally has two pre-installed SPDT micro switches used for electrical shutdown of appliances and for triggering alarm or notification signals to the building fire alarm system.\u003c\/p\u003e\n    \u003c\/div\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"accordion-item\"\u003e\n    \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eTechnical Specifications\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n    \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n      \u003ctable class=\"specs-table\"\u003e\n        \u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eFeature\u003c\/th\u003e\n\u003cth\u003eDetails\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n        \u003ctbody\u003e\n          \u003ctr\u003e\n\u003ctd\u003eManufacturer\u003c\/td\u003e\n\u003ctd\u003eAmerex Corporation\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003ePart Number\u003c\/td\u003e\n\u003ctd\u003e28318\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eComponent Type\u003c\/td\u003e\n\u003ctd\u003eMechanical Release Module (MRM)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eSystem Compatibility\u003c\/td\u003e\n\u003ctd\u003eAmerex KP Restaurant Fire Suppression System\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eIncluded Components\u003c\/td\u003e\n\u003ctd\u003eMRM Unit, OEM MRM Bracket (P\/N 28226), MRM Backplate (P\/N 11977)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eActuation Type\u003c\/td\u003e\n\u003ctd\u003eSpring-Loaded Mechanical Input, Electrical\/Mechanical\/Pneumatic Outputs\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eCapacity\u003c\/td\u003e\n\u003ctd\u003eActuates 1 to 10 Agent Cylinder\/Discharge Valve Assemblies per Nitrogen Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eDetection Methods Supported\u003c\/td\u003e\n\u003ctd\u003eFusible Link Network or Remote Manual Pull Station\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eAuxiliary Outputs\u003c\/td\u003e\n\u003ctd\u003e2 Pre-Installed SPDT Micro Switches (Electrical Shutdown and Alarm Signaling)\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eGas Shutoff Function\u003c\/td\u003e\n\u003ctd\u003eMechanically Releases Latch on Amerex Gas Shutoff Valve on Discharge\u003c\/td\u003e\n\u003c\/tr\u003e\n          \u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL 300 Listed System Component, ULC Listed\u003c\/td\u003e\n\u003c\/tr\u003e\n        \u003c\/tbody\u003e\n      \u003c\/table\u003e\n    \u003c\/div\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"accordion-item\"\u003e\n    \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eInstallation and Compliance\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n    \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n      \u003cp\u003eThe Amerex KP system, including the MRM, is a pre-engineered system as defined under NFPA 17A and must be installed, serviced, and maintained only by an Amerex factory trained and certified KP Systems distributor. Installing or servicing this component outside of that certification is not permitted under the system listing and can compromise the system's ability to perform during an actual fire event.\u003c\/p\u003e\n      \u003cul\u003e\n        \u003cli\u003e\n\u003cstrong\u003eMonthly Visual Inspection:\u003c\/strong\u003e Confirm the system is in the armed and ready condition, the MRM status indicator and nitrogen pressure window read correctly, and the remote manual pull station is unobstructed and accessible.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eSemiannual Professional Service:\u003c\/strong\u003e Required under NFPA 17A and NFPA 96, this service must be performed by a properly trained and qualified technician and includes a full test of the MRM, the detection network, the manual pull station, and all mechanical and electrical actuation components to confirm they are in operable condition.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003eMandatory Fusible Link Replacement:\u003c\/strong\u003e Metal alloy fusible links connected to the MRM's detection network must be replaced, not just inspected, at every semiannual service interval, since links that appear undamaged may have accumulated thermal stress that alters their rated actuation temperature.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003e12-Year Hydrostatic Test:\u003c\/strong\u003e NFPA 17A requires wet chemical agent cylinders in the system to be hydrostatically tested every 12 years.\u003c\/li\u003e\n        \u003cli\u003e\n\u003cstrong\u003ePost-Discharge Service:\u003c\/strong\u003e After any system activation, the MRM and full detection and actuation network must be inspected, reset, and recertified by a qualified technician before the system is returned to service.\u003c\/li\u003e\n      \u003c\/ul\u003e\n      \u003cp\u003eA fixed KP system does not eliminate the separate requirement for a portable Class K wet chemical extinguisher within 30 feet of protected cooking appliances under NFPA 96 and NFPA 10, for use during flare-ups, re-ignition, or any period when the fixed system is offline for service.\u003c\/p\u003e\n    \u003c\/div\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\n  \u003cdiv class=\"accordion-item\"\u003e\n    \u003cbutton class=\"accordion-header\"\u003e\u003cspan class=\"accordion-title\"\u003eFAQ\u003c\/span\u003e\u003cspan class=\"accordion-icon\"\u003e⌄\u003c\/span\u003e\u003c\/button\u003e\n    \u003cdiv class=\"accordion-content\"\u003e\u003cdiv class=\"accordion-content-inner\"\u003e\n      \u003ch3\u003eCan I install this myself or have a general handyman install it?\u003c\/h3\u003e\n      \u003cp\u003eNo. The Amerex KP system is a pre-engineered fire suppression system, and the MRM is its central actuation component. Installation and service must be performed by an Amerex factory trained and certified KP Systems distributor. Improper installation can prevent the system from discharging correctly during a fire and may void the system's UL listing.\u003c\/p\u003e\n      \u003ch3\u003eWhy does this kit include a bracket and backplate along with the module?\u003c\/h3\u003e\n      \u003cp\u003eThe MRM bracket (P\/N 28226) and backplate (P\/N 11977) provide the wall mounting hardware required for a proper OEM installation. Ordering the complete kit ensures the replacement module is installed using Amerex-specified hardware rather than improvised mounting that could affect the unit's alignment with the detection cable network or gas shutoff linkage.\u003c\/p\u003e\n      \u003ch3\u003eHow many cooking appliances can one MRM protect?\u003c\/h3\u003e\n      \u003cp\u003eA single MRM can actuate from one to ten agent cylinder and discharge valve assemblies from a single nitrogen cylinder, so the appliance coverage depends on how the certified distributor designed the specific kitchen's protection scheme rather than a fixed number tied to the MRM itself.\u003c\/p\u003e\n    \u003c\/div\u003e\u003c\/div\u003e\n  \u003c\/div\u003e\n\n\u003c\/div\u003e\n\u003cscript\u003e\ndocument.addEventListener('DOMContentLoaded', function() {\n  document.querySelectorAll('.accordion-header').forEach(h =\u003e h.addEventListener('click', function() { this.parentElement.classList.toggle('active'); }));\n});\n\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"Amerex OEM Mechanical Release Module | 28318 | For Amerex KP Kitchen Suppression Systems\",\n  \"description\": \"OEM Mechanical Release Module (MRM) for the Amerex KP Restaurant Fire Suppression System. Includes MRM unit, mounting bracket (P\/N 28226), and backplate (P\/N 11977). Spring-loaded actuation supporting 1 to 10 agent cylinders per nitrogen cylinder, fusible link or manual pull station detection, automatic gas shutoff linkage, and dual SPDT micro switches. 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