Shields Heating & Air Conditioning

Preventive maintenance frequency depends on the equipment and usage volume. As a general guideline: fryers and ovens should be inspected every 3-6 months; refrigeration equipment annually or semi-annually; ice machines every 6 months (including cleaning and sanitizing); exhaust hoods quarterly to semi-annually per NFPA 96; and dishwashers quarterly. High-volume operations benefit from more frequent service intervals.

Common causes include: faulty igniter or ignition module, failed heating element (electric ovens), thermostat or temperature probe failure, gas valve issues, or clogged burner ports. Start by checking error codes on the control panel if equipped. If the oven lights but doesn't reach temperature, the thermostat or temperature probe is often the culprit. A certified technician can diagnose the root cause quickly.

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.