How to Clean a Commercial Combi Oven: Step-by-Step Guide (2026)

Proper cleaning of your commercial combi oven is critical for food safety, equipment longevity, and consistent cooking performance. This guide covers daily, weekly, and monthly cleaning procedures for all major brands including Rational, Alto-Shaam, Convotherm, and Unox.

Daily Cleaning Procedure

1. Run the oven's automated cleaning cycle at the end of each service (most modern ovens have pre-programmed cycles).
2. Remove and hand-wash all racks, trays, and accessories with manufacturer-approved detergent.
3. Wipe down the door gasket and glass using a soft damp cloth.
4. Clean the door interior glass with a non-abrasive cleaner.
5. Empty and clean the drain pan and grease tray.

Weekly Deep Cleaning

1. Remove and soak all interior components in an approved combi oven cleaner for 15–30 minutes.
2. Manually scrub interior surfaces using a non-scratch pad and approved cleaning solution.
3. Inspect and clean the steam generator (descale if required).
4. Clean the water inlet filter and check for scale buildup.
5. Run a rinse cycle after cleaning to remove all chemical residues.

Cleaning Products & Chemicals

• Rational: ActiveGreen tabs (tablets rated by soil level)
• Alto-Shaam: CombiClean liquid detergent
• Convotherm: ConvoClean liquid and ConvoRinse
• General alternative: Divo Forte or Scalin Pro for manual cleaning

Important: Never use standard oven cleaners, bleach, or abrasive pads on stainless steel combi oven interiors. Always use manufacturer-approved or combi-specific products.