1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Bosch Series 4 BEL550MS0I Microwave Oven. Please read these instructions thoroughly before using the appliance and retain them for future reference.
Your Bosch microwave oven is designed for domestic use, offering convenient heating, cooking, grilling, and rotisserie functionalities. It features mechanical controls for ease of use and a powerful grill for even browning.
2. Safety Instructions
Always observe the following safety precautions to reduce the risk of fire, electric shock, personal injury, or exposure to excessive microwave energy.
- Read all instructions before using the appliance.
- Do not operate the oven when empty. This can damage the appliance.
- Do not heat liquids or other foods in sealed containers, as they are liable to explode.
- Supervise children carefully when the oven is in use.
- Do not attempt to tamper with, adjust, or repair the door, control panel, safety interlock switches, or any other part of the oven.
- Ensure the appliance is properly grounded.
- Do not use corrosive chemicals or vapors in this appliance.
- Regularly clean the oven and remove any food deposits. Failure to maintain the oven in a clean condition could lead to deterioration of the surface that could adversely affect the life of the appliance and possibly result in a hazardous situation.
- Do not use the oven for drying clothes, paper, or other non-food items.
3. Product Overview and Features
The Bosch Series 4 BEL550MS0I is a built-in microwave oven designed for seamless integration into your kitchen. Its sleek black and stainless steel finish complements modern kitchen aesthetics.
Key Features:
- Mechanical Control: Easy and intuitive operation with rotary knobs for setting time and power levels.
- Powerful Grill: Ensures foods are evenly browned for optimal cooking results.
- Rotisserie Function: Provides convenient roasting and grilling with precise rotation speed for even cooking.
- Side-Opening Hinged Door: Designed for convenience, especially suitable for elevated installation.
- Stainless Steel Interior: Durable and easy to clean.

Figure 1: Front view of the Bosch BEL550MS0I Microwave Oven, integrated into kitchen cabinetry.

Figure 2: Interior view of the microwave oven with the door open, showing the turntable and control panel.

Figure 3: Interior of the microwave oven, highlighting the grill rack for browning dishes.
4. Setup and Installation
This appliance is designed for built-in installation. Ensure proper ventilation and a stable power supply for optimal performance and safety.
Installation Guidelines:
- Location: Install the oven in a cabinet opening that meets the specified dimensions. Refer to the separate installation template provided with your appliance for precise measurements.
- Ventilation: Ensure adequate air circulation around the oven. Do not block ventilation openings.
- Power Supply: Connect the oven to a properly grounded electrical outlet with the correct voltage and current rating as specified on the appliance's rating plate.
- Stability: Ensure the oven is securely fastened within the cabinet to prevent movement during operation.
- Side-Opening Door: The side-opening hinged door makes this model ideal for elevated installation, allowing easier access to the oven cavity.
5. Operating Instructions
Your Bosch microwave oven features intuitive mechanical controls for various cooking functions, including microwave, grill, and rotisserie.
Control Panel Overview:
The control panel typically consists of two rotary knobs:
- Upper Knob: Used to select the desired power level or function (e.g., Microwave, Grill, Rotisserie).
- Lower Knob: Used to set the cooking time.
Basic Microwave Operation:
- Place food in a microwave-safe container on the glass turntable.
- Close the oven door securely.
- Turn the upper knob to select the desired microwave power level (e.g., 800W for high power).
- Turn the lower knob to set the cooking time. The oven will start automatically.
- The oven will chime when the cooking time is complete. Open the door and carefully remove the food.
Grill Function Operation:
The powerful grill function is ideal for browning and crisping food.
- Place food on the grill rack (if provided) or a heat-resistant dish suitable for grilling.
- Close the oven door securely.
- Turn the upper knob to select the Grill function.
- Turn the lower knob to set the grilling time.
- Monitor food closely to prevent over-browning.
- Use oven mitts when handling hot dishes and the grill rack.
Rotisserie Function Operation:
For roasting and grilling with the rotisserie, ensure the rotisserie spit and forks are correctly assembled and the food is securely mounted.
- Prepare the food and secure it onto the rotisserie spit.
- Insert the rotisserie assembly into the designated slots inside the oven cavity.
- Close the oven door securely.
- Turn the upper knob to select the Rotisserie function.
- Turn the lower knob to set the cooking time.
- Monitor the cooking process. The rotisserie will rotate the food for even cooking.
- Always use oven mitts when removing the hot rotisserie assembly and food.
6. Maintenance and Cleaning
Regular cleaning and maintenance will ensure the longevity and efficient operation of your microwave oven.
- Before Cleaning: Always unplug the oven from the power outlet and allow it to cool down.
- Oven Interior: Wipe the interior surfaces with a damp cloth and mild detergent after each use. For stubborn food splatters, place a bowl of water with lemon juice inside and microwave for a few minutes to loosen residue, then wipe clean.
- Oven Exterior: Clean the exterior with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Door and Seals: Keep the door and door seals clean. Do not allow grease or food residue to build up.
- Turntable: The glass turntable can be removed and washed in warm soapy water or in a dishwasher. Ensure it is completely dry before placing it back in the oven.
- Grill Element: For the grill element, ensure it is cool. Use a soft brush to remove any food particles.
7. Troubleshooting
If you encounter issues with your microwave oven, refer to the following common problems and solutions. If the problem persists, contact Bosch customer service.
| Problem | Possible Cause | Solution |
|---|---|---|
| Oven does not start. | Power cord not plugged in; Door not closed properly; Fuse blown or circuit breaker tripped. | Ensure power cord is securely plugged in; Close door firmly; Check household fuse or reset circuit breaker. |
| Food not heating. | Incorrect power level or cooking time set; Microwave-safe dish not used. | Adjust power level and cooking time; Use only microwave-safe cookware. |
| Sparks or arcing inside the oven. | Metal or foil in the oven; Food splatters on oven walls. | Remove any metal objects; Clean the oven interior thoroughly. |
| Turntable not rotating. | Turntable not correctly placed; Debris under turntable. | Ensure turntable is correctly seated on its support; Clean under the turntable. |
8. Specifications
Refer to the following technical specifications for the Bosch Series 4 BEL550MS0I Microwave Oven:
- Model Number: BEL550MS0I
- Brand: Bosch
- Capacity: 25 litres
- Color: Black
- Special Feature: Programmable (refer to specific programming options in the full manual)
- Recommended Uses: Residential
- Item Weight: 22 kg
- Included Components: Stainless steel (likely referring to interior components or accessories)
- Manufacturer: Bosch
9. Warranty and Customer Support
For warranty information, please refer to the warranty card included with your appliance or visit the official Bosch website for your region. Keep your purchase receipt as proof of purchase.
For technical assistance, spare parts, or service requests, please contact Bosch customer support. You can find contact details on the Bosch website or in your appliance documentation.
Manufacturer: Bosch





