SRM2-M Buckeye Control Head

The Buckeye SRM2-M Systems Releasing Module (SRM2-M) is the high-performance mechanical brain engineered for the Buckeye Kitchen Mister fire suppression system. In the high-velocity, grease-heavy environment of a commercial kitchen, electronic control panels are often vulnerable to thermal stress and electrical interference. The SRM2-M bypasses these risks by utilizing a purely mechanical logic sequence, serving as the central command hub that monitors a network of heat-sensitive fusible links and manual pull stations to decide exactly when to sever fuel supplies and discharge the extinguishing agent.

Replacing the legacy SRM model, the SRM2-M features an improved setting mechanism that simplifies detection line tensioning for service technicians. Constructed with a corrosion-resistant coated steel enclosure, it is designed for a multi-decade service life in the harshest back-of-house environments. For fire protection stakeholders, the SRM2-M is not just a component; it is a fail-safe guarantee that your facility remains protected even during a total building power outage.

Shielded Cable Integration Dynamics

A significant engineering advantage of the SRM2-M is its compatibility with Buckeye shielded cable. Unlike traditional systems requiring labor-intensive EMT conduit and corner pulleys, shielded cable allows the SRM2-M to monitor the detection line through a flexible, no-conduit path. This reduces mechanical friction and eliminates snag points, ensuring kinetic energy travels instantly to the control head.

Rotary Locking Lever Logic

The SRM2-M is held in a ready state by the tension of the detection cable. When a link melts, a detection slide plate shifts, rotating a heavy-duty locking lever. This releases a spring-loaded actuation pin that strikes the Model BFR-AC-S nitrogen cartridge, providing the pneumatic force needed to open the agent cylinders.

Dual-Window Visual Verification

The SRM2-M features two high-impact clear windows. The cartridge window allows confirmation that the nitrogen activation cylinder is seated, while the status window provides a mechanical flag indicating SET (Green) or FIRED (Red). This streamlines monthly walkthroughs, allowing managers to verify system readiness in seconds.

Labor Reduction Through Shielded Cable

By utilizing the shielded cable interface, contractors can install the SRM2-M in significantly less time than traditional pipe-and-pulley systems. This makes it the most cost-effective choice for kitchen retrofits where downtime must be kept to an absolute minimum.

Integrated Four-Set Dry Contacts

The SRM2-M supports up to four sets of dry contacts (DPDT). Per NFPA 17A, the system must interlock with building utilities. These built-in switches allow for the simultaneous shutdown of gas valves and makeup air fans, while also notifying the building's Fire Alarm Control Panel (FACP).

Multi-Tank Pneumatic Capacity

Using the BFR-AC-S cartridge, a single SRM2-M module can actuate up to three agent cylinders (approximately 15 to 30 flow points). This allows a single control head to protect massive appliance lines, reducing the total cost of hardware for larger hood configurations.

• High-Volume Restaurant Lines: Providing the mandatory manual and automatic trigger for fryers, charbroilers, and range suites for total hazard coverage.
• Institutional Kitchens (Schools/Hospitals): Ensuring a robust, fully mechanical safety infrastructure that passes the most rigorous public health audits.
• Food Trucks and Mobile Units: A compact, vibration-resistant solution where space is limited and no-conduit shielded cable simplifies tight routing.
• Off-Grid or Remote Facilities: Where unstable building power makes a purely mechanical safety system the only viable and reliable option.
• Retrofit Modernization: Replacing older SRM or non-Buckeye units to bring a facility up to the latest UL 300 and NFPA 96 service standards.

Nitrogen Cartridge Weight-Test

During every service, the BFR-AC-S cartridge must be removed and weighed. If the weight has deviated from the factory-stamped weight, it must be replaced to prevent non-discharge events.

Shielded Cable Tension Audit

The revised setting mechanism in the SRM2-M allows for precision tensioning. Technicians must verify that the cable is not over-tensioned (causing nuisance trips) or under-tensioned (preventing activation).

Contact Continuity Verification

Use a multimeter to verify that all four sets of dry contacts correctly transition when the module is tripped. This ensures that the gas shut-off valve and the fire alarm system will respond correctly.

Mechanical Lubrication Protocol

The internal ratchets and firing pin should be lightly lubricated with a manufacturer-approved lubricant to prevent sticky-release caused by years of grease exposure.

Can the SRM2-M be used with other brands of agent cylinders?

No. The SRM2-M is a UL-listed component specifically for Buckeye Kitchen Mister systems. Mixing manufacturers, such as using a Buckeye head with Ansul cylinders, violates the system's listing and is a major fire code violation.

What is the benefit of shielded cable over traditional conduit?

Shielded cable acts like a brake cable on a bicycle; it has its own internal liner that allows the cable to move freely around corners without the need for pulley elbows. This makes the SRM2-M significantly faster to install in finished kitchens.

How do I reset the SRM2-M after a fire or test?

Once the SRM2-M has fired, it must be professionally reset by a certified Buckeye technician. This involves replacing the activation cartridge, re-tensioning the detection line, and replacing links. The status window will remain on FIRED until this service is completed.