4-D Vacuum Sales & Services

The hi-limit switch is a safety device that cuts power when fryer temperature exceeds safe limits. Common causes: faulty thermostat allowing oil to overheat, failing hi-limit switch itself, improper temperature settings, low oil level exposing heating elements, or carbon buildup insulating heating elements. Never bypass the hi-limit switch — it prevents fires. Call a technician to diagnose the root cause.

High-temperature commercial dishwashers must reach 180°F (82°C) at the final rinse to achieve proper sanitization per NSF and health department standards. Low-temperature chemical sanitizing machines must maintain proper chemical concentrations (chlorine, iodine, or quaternary). If your high-temp machine isn't reaching 180°F, it's not properly sanitizing and may fail health inspection. Call a technician immediately.

1) Do NOT operate any electrical switches, phones inside, or create any sparks. 2) Evacuate all staff and customers immediately. 3) Call 911 from outside the building. 4) Call your gas company's emergency line. 5) Do NOT re-enter until emergency responders clear the building. 6) Contact a certified kitchen equipment technician to inspect and repair gas connections before reopening. Gas leaks can cause explosions — always take them seriously.