Introduction
Thank you for purchasing the IRIS OHYAMA KPC-MA4-B 4.0L Electric Pressure Cooker. This versatile 7-in-1 appliance is designed to simplify your cooking with its 80 automatic menus and powerful 1000W heating element. This manual provides essential information for safe and efficient use, including setup, operation, maintenance, and troubleshooting.

Image: IRIS OHYAMA KPC-MA4-B 4.0L Electric Pressure Cooker, shown with an accompanying recipe book.
1. Setup
1.1 Unpacking and Initial Inspection
Carefully remove all packaging materials. Inspect the pressure cooker for any damage. Ensure all components are present: main unit, inner pot, lid, power cord, and any accessories.
1.2 Placement
Place the electric pressure cooker on a stable, level, and heat-resistant surface. Ensure there is adequate space around the unit for ventilation and to allow steam to escape safely. Keep it away from walls, cabinets, and other heat sources.
1.3 Cleaning Before First Use
- Wash the inner pot, sealing gasket, and steam release valve thoroughly with warm, soapy water. Rinse well and dry completely.
- Wipe the exterior of the main unit with a damp cloth. Do not immerse the main unit in water.
1.4 Power Connection
Connect the power cord to the pressure cooker and then plug it into a standard AC100V 50/60Hz electrical outlet. Ensure the outlet is properly grounded.

Image: Front view of the IRIS OHYAMA KPC-MA4-B Electric Pressure Cooker, showing the control panel and lid.
2. Operating Instructions
2.1 Control Panel Overview
The control panel features a digital display and several buttons:
- Reservation: Sets a delayed start time for cooking.
- Keep Warm: Maintains food at a warm temperature after cooking.
- Back: Returns to the previous menu or cancels a selection.
- Confirm: Confirms menu selections or starts cooking.
- Dial: Used to navigate through menus and adjust settings.
2.2 Basic Cooking Steps
- Prepare Ingredients: Cut and prepare your ingredients according to your recipe.
- Add Ingredients: Place the prepared ingredients into the inner pot. Do not exceed the maximum fill line.
- Close Lid: Place the lid on the main unit and rotate it clockwise until it locks securely. Ensure the steam release valve is set to the 'Sealed' position for pressure cooking.
- Select Menu: Use the dial to browse through the 80 automatic menus or select a manual cooking mode. Press 'Confirm' to select.
- Start Cooking: Press 'Confirm' again to start the cooking process. The display will show the remaining cooking time.
- Pressure Release: Once cooking is complete, the unit will automatically release pressure or switch to 'Keep Warm' mode. For quick pressure release, carefully turn the steam release valve to the 'Vent' position, ensuring hands are clear of escaping steam.
2.3 Cooking Demonstration Video
Watch this video for a visual guide on preparing a mushroom pork soup using the electric pressure cooker.
Video: This demonstration shows the steps for cooking a mushroom pork soup, including ingredient preparation, adding to the pot, closing the lid, starting the cooking process, and the final dish. Note: The video is a short preview.
3. Maintenance and Cleaning
Regular cleaning ensures optimal performance and extends the lifespan of your pressure cooker. Always unplug the unit and allow it to cool completely before cleaning.
3.1 Cleaning the Inner Pot
The non-stick inner pot can be washed with warm, soapy water and a soft sponge. Avoid abrasive cleaners or scouring pads that could damage the non-stick coating.
3.2 Cleaning the Lid and Components
The lid, sealing gasket, and steam release valve should be removed and washed after each use. Ensure no food particles are lodged in the valve or gasket, as this can affect pressure sealing. The sealing gasket is removable for thorough cleaning.
3.3 Cleaning the Main Unit Exterior
Wipe the exterior of the main unit with a damp cloth. Do not use harsh chemicals. Never immerse the main unit in water or any other liquid.
3.4 Storage
Store the pressure cooker in a dry place. You may place the lid upside down on the inner pot to prevent odors and allow for air circulation.
4. Troubleshooting
If you encounter issues with your IRIS OHYAMA KPC-MA4-B, please refer to the following common solutions. For more detailed troubleshooting, consult the full product manual.
- Unit does not power on: Ensure the power cord is securely plugged into both the unit and a working electrical outlet. Check your household circuit breaker.
- Lid does not seal: Verify that the sealing gasket is correctly installed and free from food debris. Ensure the lid is properly aligned and rotated until it locks into place.
- Steam leaks from lid: Check the sealing gasket for damage or improper placement. Ensure the steam release valve is in the 'Sealed' position during pressure cooking.
- Food is undercooked: Confirm that the correct cooking program and time were selected. Ensure the amount of liquid added is sufficient for pressure buildup.
5. Specifications
| Feature | Specification |
|---|---|
| Brand | IRIS OHYAMA |
| Model Number | KPC-MA4-B |
| Capacity | 4.0 Liters |
| Color | Black |
| Power Supply | AC100V 50/60Hz |
| Power Consumption | 1000 W |
| Product Dimensions (D x W x H) | 32 cm x 33.4 cm x 23.2 cm |
| Item Weight | 5508 grams |
| Rice Cooking Capacity | White rice 6 cups / Brown rice 4 cups |
| Automatic Menus | 80 types |
| Special Features | Reservation function, Keep warm setting |
| Control Method | Touch / Push button |
| Finish Type | Metallic |

Image: Detailed dimensions of the IRIS OHYAMA KPC-MA4-B Electric Pressure Cooker.
6. Warranty Information
The IRIS OHYAMA KPC-MA4-B Electric Pressure Cooker comes with a manufacturer's warranty. Please refer to the warranty card included with your product for specific terms, conditions, and duration. Keep your proof of purchase for warranty claims.
7. Customer Support
For further assistance, technical support, or inquiries regarding your IRIS OHYAMA KPC-MA4-B Electric Pressure Cooker, please contact IRIS OHYAMA customer service. Contact details can typically be found on the product packaging, the official IRIS OHYAMA website, or your purchase documentation.