Wilis Appliances Repair

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.

Commercial kitchen equipment lifespans vary: commercial ovens 15-20 years, fryers 10-15 years, refrigeration equipment 10-15 years, ice machines 7-10 years, dishwashers 10-15 years, steam tables 10-15 years. Regular preventive maintenance significantly extends equipment life. Equipment that is properly maintained often outlasts these averages by 5+ years.

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.