Rational iCombi - User Manual

The RATIONAL iCombi Classic is a sophisticated cooking system designed for professional kitchens, offering a range of functions for precise and efficient cooking. It features a user-friendly interface with a central dial and a clear display, allowing for intuitive operation and monitoring of cooking processes.

Function Description

The iCombi Classic is equipped with a control panel that includes an on/off switch and a central dial for navigating through various menus and settings. The device supports a wide array of cooking modes, including humid cooking, hot air heating, and steaming, ensuring versatility for different culinary needs. It incorporates advanced sensor technology, such as cooking cabinet sensors, control sensors, and humidity sensors, to maintain optimal cooking conditions. The system also features a differential pressure sensor, fan motor speed detection, and steam heating elements to ensure consistent performance.

For gas units, a flue gas analysis is performed after a successful self-test, indicating the device's adherence to safety and efficiency standards. The iCombi Classic is designed to detect and report various errors, ranging from sensor malfunctions and heating issues to power supply problems and communication errors within its internal bus system. This comprehensive error reporting system helps in quick diagnosis and troubleshooting.

The device includes an energy optimization feature, which, when active with an installed energy optimization PCB, helps reduce power consumption. It also has a cleaning function that utilizes a care pump and care solution to maintain hygiene and prevent the buildup of residues in the steam generator and cooking cabinet.

Usage Features

The iCombi Classic offers several usage features that enhance its functionality and ease of use. The display shows essential information such as date, time, and various settings. Users can set a buzzer tone and adjust its volume for alerts and notifications. The device supports HACCP (Hazard Analysis and Critical Control Points) data download, service download, and program upload/download, facilitating data management and recipe sharing.

The control panel provides access to information about the device's model, software version, and service level. Users can drain the steam generator (ESG) through a dedicated menu item. The device also includes a note on rinsing the hand shower, indicating its commitment to hygiene.

For maintenance and troubleshooting, the iCombi Classic provides a detailed error code system. Each error code corresponds to a specific issue, such as sensor breaks, temperature deviations, water detection problems, or communication failures. The system guides users on how to check and replace faulty components, ensuring minimal downtime. For instance, if a "SC-automatic error" occurs, it suggests checking the SC pump, Combi water box, and pump-off hose. Similarly, "CDS sensor reporting too many pulses" points to issues with the level electrode, CDS sensor flow rate, or I/O PCB.

The device also supports software updates via a USB stick, allowing users to keep the unit's software current with the latest features and improvements. The update process is straightforward, involving connecting the USB stick, allowing the update to run automatically, and then removing the stick after completion.

Maintenance Features

Maintenance is a critical aspect of the iCombi Classic, and the device incorporates features to simplify this process. Calibration values are determined during installation and stored on an SD card and the PCB. On-site calibration is necessary when replacing key components such as the pressure sensor, humidity thermocouple, fan wheel, micro SD card, and PCB. This ensures accurate performance after part replacements.

The device's self-test function is crucial for new installations and after certain maintenance procedures. It checks various sensors and components to ensure they are within operational parameters. The self-test requires specific start conditions, such as the cooking cabinet, control, and humidity sensors being below 40°C, and a closed GN container inserted in front of each fan wheel.

The cleaning function is vital for maintaining the device's longevity and performance. The system provides error codes related to cleaning, such as "SC pump faulty while care solution is in the steam generator," guiding users to address issues with the cleaning process. The device also monitors water levels and connections, reporting errors like "No water detection without cleaning" or "Level electrode detecting no water even though CDS is measuring pulses."

For more advanced diagnostics, the iCombi Classic offers a service level access mode, which can be entered by pressing a specific sequence of keys and entering a password. This mode provides access to detailed diagnostic programs and settings, allowing technicians to perform in-depth troubleshooting. The device also features diagnostic LEDs on the front and rear sides of the I/O PCB, which flash in specific patterns to indicate different types of errors, such as input voltage issues, communication errors, or self-test failures. These visual cues aid in quickly identifying the root cause of a problem.

The iCombi Classic also tracks and reports errors related to the combustion system for gas units, including unsuccessful ignition processes, burner shutdowns, and deviations in gas blower speed. These features ensure that any issues with the gas supply or combustion are promptly identified and addressed, maintaining safety and efficiency.

Rational iCombi Specifications

General

Model	iCombi
Temperature Range	30°C to 300°C
Energy Efficiency	High energy efficiency, features such as triple-glazed door and optimized heat distribution.
Cleaning System	Automatic cleaning system
Manufacturer	Rational
Steam Generator	Integrated steam generator
Power Supply	Varies by model and region
Dimensions	Varies by model
Weight	Varies by model