Professional dishwasher: How to maintain it effectively?

In the catering industry, where hygiene and efficiency are paramount, the professional dishwasher is a central pillar of daily operations. This equipment, subjected to intensive use, ensures not only the impeccable cleanliness of the dishes, but also the food safety of the diners.

However, for it to continue functioning optimally, regular and methodical maintenance is essential. Humidity, heat, and food residue create an environment conducive to bacterial growth if the appliance is not properly cleaned. Good maintenance also prevents limescale buildup and leaks, and ensures consistent washing quality, thus extending the life of your machine.

Why is rigorous maintenance of your professional dishwasher essential?

A professional dishwasher is a significant investment for any commercial kitchen or restaurant. Its performance directly impacts the efficiency of service and compliance with hygiene standards. Neglecting its maintenance can lead to a range of problems, from poorly washed dishes to costly breakdowns.

A dirty or scaled appliance consumes more energy and water for less effective results. The presence of food residue or limescale on the heating elements and spray arms reduces their efficiency, increasing wash cycles and detergent consumption. Keeping your commercial dishwasher in perfect working order guarantees impeccable hygiene, optimizes your operating costs, and ensures customer satisfaction.

«"Perfectly clean dishes reflect a kitchen that adheres to the highest standards of hygiene and quality, and that starts with well-maintained equipment."»

Daily steps for a high-performing professional dishwasher

Regularity is key to effective maintenance. Every day, after each use or at the end of the day, a few simple actions prevent the accumulation of dirt and keep the appliance in good condition. These steps only take a few minutes but are crucial for the longevity and performance of your machine.

• Draining and cleaning the filters: This is the first crucial step. Remove the baskets, then unclip and empty the filters of any food residue. Rinse them thoroughly under running water to remove all particles. A clogged filter prevents water from circulating properly and redeposits dirt onto the dishes.
• Cleaning the washing arms: Check that the spray arm holes are not blocked by food particles or limescale. If necessary, clean them with a small brush and ensure they rotate freely.
• Checking the drain and the tray: Make sure the drain is not blocked. Empty and clean the drain pan to prevent water from stagnating and bacterial growth.
• Wiping interior surfaces: Wipe the inside of the tub and around the door seals with a clean, damp cloth to remove splashes and residue. Leave the door slightly ajar after cleaning to allow for ventilation and prevent unpleasant odors.

These daily actions lay the foundation for successful maintenance and prevent the majority of common problems.

Weekly and monthly maintenance: going further for sustainability

Beyond daily maintenance, a more thorough cleaning is necessary at regular intervals. These operations aim to combat limescale and grease deposits, and to inspect the machine's essential components, thus ensuring its optimal long-term performance.

Weekly maintenance:

Once a week, take the time to perform a more thorough cleaning. This involves tackling any deposits that may begin to form despite daily maintenance.

• Gentle descaling: Use a descaling product specifically designed for professional dishwashers. Follow the manufacturer's instructions for an empty cycle. Limescale, accumulated from hard water, can damage heating elements and reduce washing efficiency.
• Basket cleaning: The baskets can accumulate residue. Wash them by hand with a brush and mild detergent to remove ingrained grease and dirt.
• Door seal inspection: Check the condition of the seals. Clean them thoroughly to remove mold and residue. Clean, supple seals ensure the machine is watertight.

Monthly maintenance:

A complete cleaning and thorough check of all components is recommended every month. This is an opportunity to ensure everything is working properly and to prevent breakdowns.

For a comprehensive consultation, it is sometimes wise to consult specialists. Platforms like Exparta can help you find the right resources or technical information for your professional equipment, including dishwashers.

• Intensive descaling: Depending on the hardness of your water and how often you use it, a more powerful descaling treatment may be necessary. Some professional products are designed to dissolve stubborn limescale deposits.
• Cleaning the nozzles: Remove the spray arms for thorough cleaning of the nozzles. Use a small needle or toothpick to clear any blockages in each orifice, ensuring optimal water spray.
• Checking product levels: Ensure that the rinse aid and detergent levels are sufficient and that the dispensers are working correctly. Precise dosing is essential for perfect washing results.
• General visual inspection: Examine the pipes, connections, and overall condition of the machine. Look for any signs of wear, leaks, or corrosion that might require technical intervention.

Optimize loading for maximum efficiency

Maintenance isn't just about cleaning the machine. How you load your commercial dishwasher directly impacts wash quality and appliance performance. Proper loading ensures that each piece of dishware receives the necessary water and detergent.

Always start by scraping plates and dishes to remove large food scraps before placing them in the dishwasher. Never overload the baskets. Each item must have enough space for water to circulate freely and reach all surfaces. Plates and bowls should be positioned so that their soiled surface is exposed to the water jets.

Glasses and cups are generally placed upside down in the top basket to prevent water from pooling. Cutlery, on the other hand, should be placed in its own basket, mixed together (points up and down) to prevent them from nesting and to optimize cleaning.

Choosing the right cleaning products and accessories

The effectiveness of your cleaning also depends on the tools and products you use. It is essential to choose products specifically formulated for professional dishwashers, which are more powerful and better suited to the demands of high-volume kitchens.

Product/accessory type	Role and use	Frequency of use
Professional detergent	Daily dishwashing liquid, formulated for water and machine	With each wash cycle
Rinse aid	Speeds up drying, prevents streaks and adds shine	With each wash cycle
Specific descaler	Removes limescale deposits, protects heating elements	Weekly to monthly (depending on water hardness)
Machine cleaning product	Degrease and clean the inside of the tank and the pipes	Monthly
Cleaning brush	For filters, wash arms and hard-to-reach areas	Daily
Microfiber cloths	Wiping of interior and exterior surfaces	Daily

Avoid using general-purpose household cleaning products, which are often too harsh or unsuitable and could damage the components of your professional machine. Always follow the manufacturer's recommendations for your dishwasher when choosing consumables.

Your professional dishwasher: an investment to protect

A professional dishwasher, when properly maintained, can serve your establishment for many years. The initial investment, often substantial, is offset by its reliability and consistent performance. Regular maintenance is not simply an additional task; it's a proactive strategy to guarantee the continuity of your service and the quality of your offering.

By adopting these maintenance practices, from daily inspections to more thorough cleanings, you not only ensure spotless dishes but also help reduce unexpected breakdowns and repair costs. This guarantees smooth operation, compliance with the strictest hygiene standards, and peace of mind for your entire team.