Commercial Dishwashers
Industrial dishwashing equipment used in hospitality businesses that must reach specific temperatures to sanitise crockery, utensils, and equipment.
Commercial dishwashers are a critical part of food safety in hospitality. Unlike domestic machines, commercial dishwashers operate at much higher temperatures to ensure effective sanitisation of crockery, glassware, and utensils. UK food safety regulations require that items in contact with food are effectively cleaned and disinfected. Environmental Health Officers will check that your dishwasher reaches the correct temperatures and is properly maintained. A poorly functioning dishwasher can be a significant source of cross-contamination and bacterial growth.
Key Points
- Final rinse must reach at least 82°C for thermal disinfection
- Daily filter cleaning and regular descaling are essential
- Professional servicing should be done at least annually
- Temperature logs should be kept as evidence for EHO inspections
- Chemical sanitisation is an alternative if thermal disinfection is not achievable
Temperature Requirements
Commercial dishwashers must reach specific temperatures to effectively sanitise. The wash cycle should reach at least 55-65°C with detergent, and the final rinse must reach at least 82°C for at least 2 seconds to thermally disinfect. Some machines use chemical sanitisation at lower temperatures, but thermal disinfection at 82°C+ is the gold standard and what most EHOs prefer to see. Glass washers typically operate at lower temperatures (60-65°C wash, 70°C rinse) to prevent thermal shock to glassware.
Maintenance and Monitoring
Regular maintenance is essential for both food safety and machine longevity. Daily tasks include cleaning filters, checking rinse aid and detergent levels, and wiping door seals. Weekly tasks include descaling and deep cleaning wash arms. You should have the machine professionally serviced at least annually, or more frequently in hard water areas. Keep a temperature log showing that your machine consistently reaches the required temperatures. Most modern commercial dishwashers have built-in temperature displays that should be checked each cycle.
Common Issues and EHO Concerns
The most common issues EHOs identify with commercial dishwashers include: not reaching the required rinse temperature (often due to limescale build-up or faulty heating elements), blocked wash arms reducing cleaning effectiveness, worn door seals allowing heat to escape, and staff not pre-rinsing heavily soiled items. If your dishwasher cannot reach 82°C on the final rinse, you must either repair it or implement a chemical sanitisation step. Keep maintenance records and temperature logs as evidence of compliance.
Frequently Asked Questions
What temperature should a commercial dishwasher reach?
The wash cycle should be 55-65°C with detergent, and the final rinse should reach at least 82°C for a minimum of 2 seconds. This high temperature is necessary to thermally disinfect items and kill harmful bacteria. Check your machine's temperature display each cycle and record the readings.
How often should a commercial dishwasher be serviced?
Commercial dishwashers should be professionally serviced at least once a year, with more frequent servicing recommended in hard water areas or for heavily used machines. Daily and weekly cleaning tasks (filters, wash arms, door seals) should be performed by kitchen staff and documented.
Do I need to keep dishwasher temperature records?
While not explicitly required by a single regulation, maintaining temperature records for your commercial dishwasher is considered best practice and demonstrates due diligence. EHOs will look favourably on businesses that can show their dishwasher consistently reaches safe temperatures. It forms part of your overall HACCP-based food safety management system.
Ready to simplify your compliance?
Start your free 14-day trial and see how Paddl makes food safety management effortless.