Health and Safety
CNSRV DC:02 — Thawing Code Compliance
Reviewed by health departments across the country — every completed review has reached the same conclusion: no variance required.
How the CNSRV DC:02 (NSF/ANSI 169 certified), operated per the manufacturer's user guide, performs against the running-water thawing requirements of FDA Food Code § 3-501.13 and the state retail food codes modeled on it — including California Retail Food Code § 114020. Independently reviewed by Dr. Eric Schulze, PhD, a former FDA food-safety regulator, and confirmed fully compliant.
What the Code Requires
FDA Food Code § 3-501.13(B) permits thawing when time/temperature control for safety (TCS) food is:
- Completely submerged under running water;
- At a water temperature of 21 °C (70 °F) or below;
- With sufficient water velocity to agitate and float off loose particles in an overflow; and
- Within time/temperature limits — ready-to-eat food may not rise above 5 °C (41 °F); raw animal food requiring cooking may not be above 41 °F for more than 4 hours including preparation time.
The code sets a performance standard — controlled temperature and sufficient water velocity. The "agitate and float off loose particles" clause defines how fast the water must move; a flow source, flow rate, or fixture is not prescribed.
How the DC:02 Performs — vs. a Typical Open Faucet
| Code element | Open-faucet thaw (~7 GPM) | CNSRV DC:02 |
|---|---|---|
| Water temperature ≤ 70°F | Tap temperature varies by region, season, and plumbing | Hardware-enforced: heating element auto-shuts at 66°F — a built-in 4°F safety margin — with an active temperature display supporting temperature-control management |
| Complete submersion | Dependent on sink setup and operator practice | Designed to operate with a full basin of water, necessitating that product remains fully submerged throughout the thaw |
| Water velocity to agitate & float off loose particles | ~7 gallons per minute of passive flow to overflow | 130 gallons per minute of directed circulation — roughly 18× the water movement, far exceeding the velocity the standard calls for. When thawing sealed product, no loose particles enter the water; the full water volume is discharged to the sink drain when the unit is drained |
| Time/temperature limits (41°F; 4-hour window for raw proteins) | Water temperature fluctuations and variation in operator execution may lead to inconsistent danger-zone management | Defrosts up to 2× faster than an open faucet, shortening danger-zone exposure; operates within California's 2-hour limit — the strictest in the country — and well inside the FDA model's 4-hour window |
| Potable water; sanitary design | Potable supply at a prep sink; no equipment standard applies to the faucet method | Same potable supply, with the added assurance of NSF/ANSI 169 listed equipment: certified materials, construction, and cleanability, with a documented after-every-use cleaning SOP and tool-free deep-cleaning disassembly |
Thousands of gallons used per thaw, straight to the drain — and the shortfalls the code cares about: food floating partially exposed instead of fully submerged, and no temperature control on water that often runs above 70°F.
“Given the warm temperatures in our city, we constantly found ourselves outside the safe temperature zone when running the faucet. CNSRV allows us to regulate that temperature, stay in compliance, and the speed keeps us on pace even during our busiest moments.”
— CULINARY TEAM, ALLEGIANT STADIUM · LAS VEGASConditions of use: In the typical use case, product is thawed in its sealed packaging, so no true food contact with the unit or the circulating water occurs. Where unpackaged product is thawed, the DC:02 is NSF/ANSI 169 listed food equipment designed to be fully washed, rinsed, and sanitized between uses per the user guide, and its circulation and temperature control meet the running-water parameters of § 3-501.13(B) above.
See the Standard Operating Procedures
Each SOP, step by step, in 90 seconds — the same procedures posted at the sink for kitchen staff.
Regulatory Determinations to Date
Every health authority that has completed a review of the CNSRV DC:02 has reached the same conclusion: no variance is required — the system satisfies the intent and performance requirements of existing thawing code as written.
“We would encourage operators to use the machine as specified to avoid potential violations of the Food Code.”
— FLORIDA DEPT. OF BUSINESS & PROFESSIONAL REGULATION, DIVISION OF HOTELS AND RESTAURANTSThis list continues to grow as additional jurisdictions complete their reviews. Health officials evaluating the DC:02 can start with the one-page Regulatory Guidance Sheet, or contact us — we're glad to arrange a live demonstration.
Expert Finding
"The CNSRV DC:02 food thawing device is adequate for its intended use as an alternative to conventional running-water methods and is consistent with FDA requirements for thawing food safely in commercial kitchens. We do not encounter any unique risks or hazards with the DC:02 device."
Dr. Eric Schulze, PhDFormer FDA Food-Safety Regulator · GoodHumans Risk Assessment, 2025