Smart Grease Interceptor Monitoring & Pump-Out Management Station | RC-GIM-500

Overview

The RC-GIM-500 is a smart grease interceptor monitoring and pump-out management station from REDCOAST.LTD for commercial kitchens, campuses, transport terminals, hospitality properties, and public facilities. It connects grease accumulation alarms, high-liquid warnings, equipment diagnostics, and service records in one hardware, Web platform, and mobile App solution. Facility teams can distinguish a separator approaching its service threshold from an urgent hydraulic problem, assign the appropriate contractor, and retain an auditable maintenance history. The reference configuration uses an existing AC supply beside the building or service yard; it is a build-to-order product specification, with final ratings and acceptance tests agreed for each project.

Key Features

• Two grease alarm stages: Separate capacitive point probes provide an early service warning and a higher accumulation alarm at independently commissioned elevations.
• Dedicated high-liquid detection: A third probe detects liquid reaching an abnormal elevation, with its own alarm priority and confirmation timer.
• Local operation during network outages: The edge controller maintains sensing, audible indication, display messages, and alarm relay operation while storing records for later upload.
• Pump-out workflow: Operators assign work orders, attach contractor receipts and photographs, record sludge inspections, and confirm probe cleaning and water refill.
• Purpose-built electronics: REDCOAST.LTD develops the probe interface, cable supervision, isolated I/O, and power-monitoring PCBs to suit the selected sensors and site interfaces.
• Building-system integration: Ethernet, isolated RS-485, Modbus, and dry contacts connect the station to facilities management and existing alarm panels.
• Outdoor serviceability: A finished metal cabinet, removable probe rail, accessible terminals, and replaceable field cables support maintenance from the access opening.
• Clear data quality: Disconnected probes, stale communications, maintenance mode, and unconfirmed service completion remain visible instead of appearing as normal operation.

Technical Architecture

One station monitors one gravity grease interceptor using two grease-in-water point detectors and a separate high-liquid detector. Grease probes sit at different elevations in the separation compartment, away from inlet turbulence, baffles, and the pump-out hose path. Their capacitance response changes when the surrounding medium changes from wastewater to accumulated grease or air. Probe elevations are established against the separator manufacturer's geometry and verified normal water level. These are threshold alarms: the controller does not convert a mounting depth into a continuous grease thickness, a stored volume, or an effluent FOG concentration. Commercial capacitive grease and high-level detection is established in the Labkotec GA-2 technical data sheet, revision 5/2023; this is a technology reference, not certification of the RC-GIM-500.

The edge assembly combines a microcontroller, supervised sensor interfaces, isolated communications, nonvolatile storage, a watchdog, a local display, and four alarm relays. A one-second processing cycle applies separate persistence settings to grease and high-liquid inputs, reducing nuisance indications from short disturbances without treating an alarm as cleared merely because someone acknowledged it. A normally energized common-health relay releases on loss of station power or a detected controller fault. Each channel keeps its own status and timestamp; cable open-circuit and short-circuit diagnostics identify electrical faults, while periodic physical testing remains necessary to identify contamination or a stuck sensing response.

The Web platform groups stations by property and asset, displays alarm history, and assigns service actions to named users. The mobile App captures inspection photographs, manually measured sludge observations, disposal documentation, and the technician's return-to-service checklist. Sensor transitions can suggest that emptying occurred, but they cannot establish that sludge was removed, the tank was cleaned, or waste was lawfully disposed of. Completion therefore requires an authorized service record. Remote configuration changes are logged, while alarm logic continues locally without a cloud connection.

Connectivity & Power

The station accepts AC 100–240 V, 50/60 Hz from the facility distribution system. The reference package budgets 18 W in normal operation and 40 W maximum for the controller, display, supplied probes, and communications; an optional 30 W anti-condensation heater raises the package maximum to 70 W. A dedicated protected circuit, local isolation, protective earthing, and coordinated surge protection are specified during installation. This configuration contains no solar panel or dedicated battery. Where operation through a power outage is required, the station connects to the building's backed-up circuit.

Ethernet is preferred where a facilities network reaches the service area. An optional LTE Cat 1 bis modem provides independent backhaul where trenching a data cable is impractical; the modem band set and SIM are selected for the deployment country. The antenna remains above ground and outside the metal cabinet, since a buried interceptor and its metal covers can obstruct radio signals. RS-485 serves nearby building controllers, while MQTT over TLS and HTTPS carry remote telemetry through approved network routes. Modbus access stays on a protected local network or managed VPN.

Routine uploads are configurable from one to sixty minutes, with five minutes as the reference setting. Alarm events trigger an immediate transmission attempt after local confirmation; actual remote arrival depends on network availability. A one-minute local snapshot interval supports approximately 180 days of buffered records, followed by chronological synchronization when the connection returns.

Protection & Reliability

The reference cabinet has an IP66 design target, and the immersed probe assemblies have an IP68 target with a defined project test condition of two metres of immersion for thirty days. These ratings address different exposures: the cabinet remains above the assessed flood level, while the probes operate inside the interceptor. The applicable enclosure classification framework is IEC 60529. Final assembly testing must include the actual display seal, cable glands, antenna feedthrough, and probe cable entries.

Standard cabinet ambient conditions are -10 to +50 °C in a shaded location; the cold-weather package targets -20 to +50 °C with the heater fitted. The monitored liquid must remain unfrozen within 0 to +60 °C. A canopy reduces solar heating, and the coating system is selected for the site's salt exposure and cleaning chemicals. Exposed steel cabinet and pedestal surfaces receive hot-dip galvanizing followed by a smooth matte powder-coated or fluorocarbon-painted topcoat. Immersed probe supports use suitable stainless steel or polymer components.

A low wall mounting or short pedestal limits wind exposure, but anchors and the support structure still require assessment for the site. Dust seals, cable strain relief, separable electronics, and probe replacement access support maintainability. The procurement package defines warranty duration, spare-parts coverage, and service response; an IP target or corrosion treatment is not presented as proof of a particular field lifetime.

Application Scenarios

Campus dining and institutional kitchens

Install the station beside buried interceptors serving university dining halls or large staff kitchens. Different meal schedules create uneven loading, so separate early-warning and urgent alarms help maintenance teams coordinate servicing around food preparation while preserving mandatory service deadlines.

Hospitals and healthcare campuses

Monitor kitchen wastewater interceptors in service yards where a backup could disrupt catering or access. Ethernet integration forwards alarms to the facilities desk, while contractor permissions limit access to the assigned interceptor and its service records.

Transport terminals and food courts

Deploy one station per shared interceptor serving multiple concessions. A common dashboard identifies which asset needs attention and retains a traceable service history without attributing a shared-tank alarm to a particular tenant without additional evidence.

Hotels and conference facilities

Track separators affected by banquet schedules and seasonal occupancy. The mobile workflow connects an accumulation warning to a planned pump-out visit, while the independent high-liquid channel highlights a possible blockage that needs a different response.

Municipal markets and public venue estates

Group interceptors across market halls, exhibition venues, and sports facilities under one maintenance account. Asset identifiers, location records, alarm acknowledgments, and disposal attachments help the owner supervise multiple contractors and document completed work.

Case-style Examples

The following are illustrative configuration examples, not claims of completed customer installations or measured savings.

Shared food-court service yard

A property operator needs earlier notice of grease accumulation and clearer evidence that scheduled emptying has been completed. The proposed configuration uses one RC-GIM-500, three probes, Ethernet backhaul, and a high-liquid relay connected to the existing building alarm panel. The intended result is a documented sequence from warning to contractor assignment, physical cleaning, refill verification, and work-order closure, with hydraulic alarms routed separately for urgent investigation.

Distributed campus kitchen retrofit

A campus has six existing interceptors, AC power at each service area, and inconsistent network coverage. Six stations use Ethernet at four buildings and LTE at two, with a shared Web dashboard and individual asset QR codes. The expected operational benefit is a consolidated service queue and comparable records across the estate; the project makes no assumption that monitoring permits longer cleaning intervals.

Waterfront hospitality service area

A hospitality property needs an outdoor cabinet exposed to salt-laden air and routine cleaning activity. The proposed package uses an assessed marine coating system, stainless probe supports, a sunshade, sealed cable transitions, and a cabinet mounted above the local flood design level. Commissioning verifies probe response in the actual wastewater and confirms that cleaning procedures do not damage seals or sensing surfaces.

Customization & Selection Guide

Start with the interceptor drawing, normal liquid level, permitted grease storage limit, access dimensions, wastewater temperature, and existing cleaning schedule. The reference package provides three probes for staged grease warnings and high-liquid detection. A lower-cost configuration uses one grease probe plus the high-liquid probe; it provides a single accumulation threshold. Neither configuration replaces a sludge inspection, a sampling programme, or the separator's required hydraulic capacity.

Choose Ethernet for sites with an approved local network and LTE for powered locations without a practical data connection. Specify the required Modbus register map, relay destinations, user roles, hosting arrangement, and record retention before software configuration. Where an existing alarm controller is retained, REDCOAST.LTD can design an isolated contact-interface PCB around its documented outputs, with a corresponding reduction in the diagnostics available from the underlying sensors.

Probe chemistry and placement matter more than a generic tank-size claim. Emulsified wastewater, detergent changes, heavy deposits, or an unusually hot process may require a site trial and a different sensing package. Sensor manufacturers also distinguish point alarms from continuous measurement: KESSEL SonicControl is an example of a separate ultrasonic layer-measurement approach. Buyers requiring continuous thickness should specify that requirement separately rather than treating the RC-GIM-500's two alarm elevations as a continuous measurement.

Deployment & After-sales

Installation begins with a survey of the access opening, isolation arrangements, cable route, service-vehicle access, and available power. The cabinet is mounted clear of hose movements and vehicle impact areas. A removable rail carries the probes without obstructing inlet or outlet structures; cable glands and any penetrations must preserve the interceptor's sealing requirements. Equipment inside a classified hazardous space requires a separately assessed and appropriately certified sensor circuit; the reference station is for non-hazardous installations.

Commissioning includes clean-water baseline checks, physical probe response tests, cable-fault simulation, relay verification, communications loss and restoration, and an agreed grease-response check. The technician records each mounting elevation and tests alarm routing to the actual recipients. A display test alone does not prove that a probe senses correctly. After pump-out, staff clean the probes, refill the interceptor as required by its manufacturer, inspect the installation, and confirm normal readings before closing the service record.

Delivery planning separates drawing approval, PCB development where required, prototype evaluation, enclosure manufacture, software configuration, factory acceptance, and site acceptance. The quotation states lead time against the approved scope and component availability. After-sales options include remote diagnostics, configuration backups, replacement probe kits, technician training, firmware maintenance, and contract-defined response times.

Standards & Compliance

For projects using the EN framework, EN 1825-2:2002 covers grease separator sizing, installation, operation, and maintenance. The monitoring station does not establish the host separator's treatment performance or replace the separator documentation. Cleaning frequencies, retained-grease limits, sludge checks, and waste-transfer records follow the applicable local requirements and the separator manufacturer's instructions. A low sensor reading does not authorize postponing a required service.

The electrical evaluation plan considers IEC 61010-1 for measurement and control equipment safety and IEC 61326-1:2020 for electromagnetic compatibility. Applicable CE requirements, RoHS documentation, radio approvals, and any jurisdiction-specific electrical listings are identified for the final configuration. These are compliance planning references, not claims that the newly specified RC-GIM-500 already holds a certificate. Test reports and declarations must identify the delivered hardware revision and installed options.

Why REDCOAST.LTD

REDCOAST.LTD provides the complete monitoring solution: field hardware, embedded control, a Web management platform, and a mobile maintenance App. Its in-house hardware capability includes new PCB development and board-level design for sensor conditioning, diagnostics, isolated interfaces, and power supervision, allowing the electronics to follow the actual project requirements. Mechanical design, alarm workflows, integrations, documentation, and commissioning can therefore be coordinated through one delivery team.

The product focuses on a defined operational task: knowing when a grease interceptor needs attention and documenting what happened next. It gives property owners and integrators a concrete equipment package with clear sensing limits, service responsibilities, and configuration choices.

Contact REDCOAST.LTD with your interceptor drawings, site power and network details, and maintenance requirements to request a customized RC-GIM-500 solution.