How to Clean a Rational iCombi Oven
Cleaning your Rational iCombi oven is a key part of keeping your kitchen safe, efficient, and up to hygiene standards. Whether you’re using your oven for roasting, steaming, or baking, daily cleaning helps maintain its performance and extends its lifespan. In this guide, we’ll walk you through how to clean your Rational iCombi using the right products available at Heaton Catering Equipment.
Why Regular Oven Cleaning Matters
A Rational iCombi is a powerful tool in any commercial kitchen. Over time, grease, limescale, and food residue can build up, affecting both cooking results and the oven’s internal systems. Regular cleaning ensures your oven stays in peak condition, reduces downtime, and keeps food tasting the way it should.

Essential Cleaning Products for Rational iCombi
Heaton Catering Equipment supplies a full range of Rational-approved cleaning products, including:
- Rational Active Green Cleaner Tablets 56.01.535
- Care Control Tablets 56.00.562
- Detergent Tablets 56.00.210
- Rinse and Aid Tablets 56.00.211
These products are designed to work specifically with Rational ovens, ensuring effective cleaning without damaging internal parts or voiding warranties.
Step-by-Step: How to Clean Your Rational iCombi Oven
Cleaning your Rational iCombi oven involves a few clear steps. Following this process ensures hygiene, prevents damage, and keeps your equipment running smoothly. Here’s how to do it:
1. Allow the Oven to Cool
Before starting any cleaning, make sure the oven is cool enough to touch safely. This protects both the equipment and the user.
2. Remove Accessories and Debris
Take out all accessories like racks, trays, and grids. Wipe away any large food particles, grease, or residue from the oven chamber. Clean the accessories separately with warm water and detergent or in a dishwasher.
3. Check the Door Seal and Glass
Inspect the door seal for damage and wipe it down with a soft cloth. Clean the door glass gently with a non-abrasive cloth and warm water.
4. Clean the Air Baffle (if fitted)
If your model includes a removable air baffle, take it out and clean it with warm water. Dry thoroughly before reinstalling.
5. Manual Pre-Clean (Optional)
If there is heavy residue or burnt-on grease, spray affected areas with Pink Grill Cleaner using the Rational Hand Spray Gun. Let it sit for a few minutes, then wipe with a soft cloth or sponge. Avoid using metal scrapers or abrasive pads.
6. Start the AutoClean System
Your iCombi oven features an automatic cleaning system. It determines the level of soiling and suggests the correct cycle:
- Light for daily cleaning
- Medium for regular grease build-up
- Intensive for deep cleaning or after heavy use
When prompted on the screen, insert the correct number of Rational Cleaner Tablets and Rational Care Control Tablets.
7. Insert the Rational Cleaning Products
- Cleaner Tablets remove grease, fat, and food residue. They work with the oven’s self-cleaning cycle.
- Care Control Tablets help prevent limescale, protect internal parts, and keep the steam generator in top shape.
Only use official Rational tablets to avoid damaging sensitive components.
8. Wait for the Cycle to Complete
The oven will run the cleaning cycle, including rinse and dry phases. Once complete, the oven will shut off or return to standby. Do not interrupt the process.
9. Finish and Reinstall Accessories
When the cleaning cycle ends, dry the interior with a soft cloth if needed. Reinstall racks, trays, and accessories. Your Rational iCombi is now ready for the next service.
Important Safety Tips Before Cleaning Rational iCombi Ovens
Before starting the cleaning process, keep these safety guidelines in mind:
- Always wear protective gloves when handling any cleaning chemicals.
- Let the oven cool down before starting a cleaning cycle to prevent burns or damage.
- Do not open the oven door while a cleaning cycle is in progress.
- Use only genuine Rational cleaning tablets. Non-approved products may harm the oven and void the manufacturer’s warranty.


Keep Your Rational iCombi Oven at Its Best with Heaton Catering Equipment
Regular maintenance of your Rational iCombi oven doesn’t have to be complicated. With the right tools and a simple routine, you’ll keep your oven running at full power, reduce breakdowns, and ensure your kitchen meets food safety regulations.
All the Rational cleaning supplies mentioned in this guide are available now, stock up today to keep your equipment in top condition.
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