Important Safety Information
Read all instructions carefully before using this appliance. Failure to follow these instructions may result in electric shock, fire, or injury. Keep this manual for future reference.
- Do not attempt to operate this oven with the door open as this can result in harmful exposure to microwave energy.
- Do not place any object between the oven front face and the door or allow soil or cleaner residue to accumulate on sealing surfaces.
- Do not operate the oven if it is damaged. It is particularly important that the oven door closes properly and that there is no damage to the: (1) door (bent), (2) hinges and latches (broken or loosened), (3) door seals and sealing surfaces.
- The oven should not be adjusted or repaired by anyone except properly qualified service personnel.
- Ensure the appliance is properly grounded.
- Do not use corrosive chemicals or vapors in this appliance.
- Always use oven mitts when handling hot items from the microwave.
Product Overview
The Chefman Countertop Microwave Oven (Model RJ55-SS-9) is a 0.9 cubic foot, 900-watt appliance designed for efficient heating, defrosting, and cooking. It features a digital display, stainless steel finish, and a range of convenient functions.

Figure 1: Front view of the Chefman Countertop Microwave Oven, showing the digital display, control panel, and door handle.
Key Features:
- 0.9 Cu. Ft. Capacity: Compact size suitable for various kitchen spaces.
- 900 Watts Power: Provides efficient heating and cooking performance.
- 10 Power Levels: Offers versatility for different cooking needs.
- 6 Pre-programmed Settings: Dedicated buttons for Popcorn, Potato, Pizza, Veggies, Beverages, and Leftovers.
- Memory Function: Saves frequently used settings for quick access.
- Multi-phase Cooking: Allows programming two different cooking cycles consecutively.
- Eco Mode: Reduces energy consumption by turning off the digital display when idle.
- Mute Option: Silences operational beeps and alarms.
- Quick Start +30 Seconds: Instantly adds 30 seconds of cooking time.
- Child Safety Lock: Prevents unintended operation.
- Easy-Clean Interior: Features a dishwasher-safe glass turntable.

Figure 2: The control panel highlighting features like 6 Presets, Mute Button, Eco Mode, and +30 Seconds Quick Start.
Setup
- Unpacking: Carefully remove the microwave oven and all packing materials from the carton. Check for any damage such as dents or a misaligned door. Do not operate if damaged.
- Placement: Place the microwave on a flat, stable surface that can support its weight and the heaviest food item likely to be cooked in it. Ensure adequate ventilation:
- Leave a minimum of 3 inches (7.5 cm) of space on the top, sides, and back for proper airflow.
- Do not block air vents.
- Turntable Installation:
- Place the turntable ring inside the microwave cavity.
- Position the glass turntable plate securely on top of the turntable ring. Ensure it sits properly on the center hub.
- Power Connection: Plug the microwave oven into a standard 120V, 60Hz grounded electrical outlet. Do not use an extension cord.

Figure 3: The microwave interior showing the glass turntable in place, ready for use.
Operating Instructions
Setting the Clock:
- Press the CLOCK button once.
- Use the number pad to enter the current time (e.g., 12:30 for 12:30 PM).
- Press the CLOCK button again to confirm.
Basic Microwave Cooking:
- Place food in a microwave-safe container on the turntable. Close the door.
- Press the TIME COOK button.
- Use the number pad to enter the desired cooking time (e.g., 1 for 1 minute, 100 for 1 minute 00 seconds).
- Press the POWER button.
- Use the number pad to select a power level from 1 to 10 (10 being 100% power).
- Press START/+30s to begin cooking.
Pre-programmed Settings:
The microwave features 6 convenient one-touch preset buttons:
- POPCORN: For popping popcorn.
- POTATO: For cooking potatoes.
- PIZZA: For reheating pizza slices.
- VEGGIES: For steaming or reheating vegetables.
- BEVERAGE: For heating drinks.
- LEFTOVERS: For reheating various leftover foods.
To use, simply place the food in the microwave and press the corresponding preset button. The microwave will automatically set the optimal cooking time and power level.
Multi-phase Cooking:
This function allows you to program two different cooking stages with varying power levels and times. For example, you can defrost food and then cook it in one continuous cycle.
- Program the first cooking stage (e.g., defrost by weight).
- Program the second cooking stage (e.g., time cook with desired power level).
- Press START/+30s to begin the multi-phase cooking process.
Memory Function:
Save up to three frequently used settings for quick one-touch cooking.
- Program your desired cooking time and power level.
- Press the SELECT FAVORITES button.
- Press a number (1, 2, or 3) to save the setting to that memory slot.
- To use a saved setting, press the corresponding number (1, 2, or 3) and then START/+30s.
Eco Mode:
To activate Eco Mode, press the ECO MODE button. The digital display will turn off when the microwave is not in use, reducing energy consumption. Press any button to reactivate the display.
Mute Option:
To silence the microwave's beeps and alarms, press and hold the MUTE button for 3 seconds. Repeat to unmute.
Quick Start +30 Seconds:
Press the START/+30s button to instantly start cooking at 100% power for 30 seconds. Each subsequent press adds another 30 seconds to the cooking time.
Child Safety Lock:
To prevent accidental operation, especially by children:
- To activate: Press and hold the STOP/CANCEL button for 3 seconds until a lock indicator appears on the display.
- To deactivate: Press and hold the STOP/CANCEL button for 3 seconds until the lock indicator disappears.

Figure 4: The microwave door handle, illustrating the child safety lock mechanism.
Maintenance and Cleaning
Regular cleaning helps maintain the performance and longevity of your microwave oven.
- Interior: Wipe the inside of the oven with a damp cloth after each use. For stubborn food splatters, use a mild detergent or microwave-safe cleaner. Do not use abrasive cleaners or scouring pads.
- Turntable: The glass turntable and turntable ring can be removed for cleaning. They are dishwasher safe.
- Exterior: Clean the exterior surfaces with a soft, damp cloth. Avoid spraying cleaners directly onto the control panel.
- Door Seals: Keep the door seals clean to ensure proper closure and efficient operation.
Troubleshooting
Before contacting customer support, please refer to the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Microwave does not start. | Power cord not plugged in; Door not closed properly; Child Safety Lock activated. | Ensure power cord is securely plugged in. Close the door firmly. Deactivate Child Safety Lock by holding STOP/CANCEL for 3 seconds. |
| Food is not heating. | Incorrect cooking time or power level set; Door not closed properly. | Verify cooking time and power level settings. Ensure the door is completely closed. |
| Unusual noise during operation. | Turntable not correctly placed; Foreign object in cavity. | Ensure the turntable and ring are correctly seated. Check for any obstructions inside the microwave. |
| Display shows "E" or error code. | Internal malfunction. | Unplug the microwave for 1 minute, then plug it back in. If the error persists, contact customer support. |
Specifications
| Feature | Detail |
|---|---|
| Model Number | RJ55-SS-9 |
| Capacity | 0.9 Cubic Feet |
| Wattage | 900 Watts |
| Voltage | 120 Volts |
| Product Dimensions (D x W x H) | 14.76" x 19.09" x 11.54" |
| Item Weight | 27.2 pounds |
| Material | Stainless Steel |
| Installation Type | Countertop |
| Special Features | Child Safety Lock, Defrost, Eco Mode, Express Cook, Programmable |

Figure 5: Diagram showing the dimensions of the Chefman Countertop Microwave Oven.
Warranty and Support
This Chefman Countertop Microwave Oven (Model RJ55-SS-9) is backed by a 1-year assurance provided by Chefman, covering defects in material and workmanship under normal household use.
For warranty claims, technical assistance, or product inquiries, please contact Chefman Customer Support:
- Website: www.chefman.com/support
- Phone: Refer to the Chefman website for the most current contact numbers.
- Please have your model number (RJ55-SS-9) and proof of purchase available when contacting support.





