Doctor Drips LLC

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.

A comprehensive PM program should include: scheduled inspections at manufacturer-recommended intervals, cleaning of condenser coils and filters, calibration of temperature controls, inspection and testing of safety systems, lubrication of moving parts, replacement of wear items (gaskets, filters, belts), refrigerant level checks, combustion analysis for gas equipment, and detailed documentation for each visit. Avoid programs that are just a visual inspection without hands-on service.

Commercial fryer safety checks include: verifying hi-limit switch operation, checking thermostat accuracy, inspecting gas connections and pressure (gas fryers), testing electrical connections (electric fryers), checking oil filtration system function, inspecting drain valve operation, verifying fire suppression system compatibility, and checking for oil leaks. Safety checks should be performed by a certified technician at every service visit.