Introduction
Welcome to your new Chefman Obliterator Blender. This manual provides essential information for safe operation, setup, use, and maintenance of your appliance. Please read all instructions carefully before first use to ensure proper functioning and to prevent injury or damage.
Important Safeguards
When using electrical appliances, basic safety precautions should always be followed, including:
- Always operate the blender on a stable, flat, and dry surface.
- Ensure the blending jar is securely locked onto the motor base before operation.
- Do not touch moving parts. Keep hands and utensils out of the jar while blending to prevent injury.
- Never immerse the motor base in water or other liquids.
- Unplug the blender from the outlet when not in use, before assembling or disassembling parts, and before cleaning.
- Do not blend hot liquids without proper ventilation. Remove the measuring cup cover and cover the lid opening with a towel to avoid excess splatter.
- Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or has been damaged in any manner. Contact customer support for assistance.
- This appliance is for household use only.
Components Included
- 1 x Chefman Obliterator Blender Motor Base
- 1 x 48 oz Tritan Blending Jar
- 1 x Lid with 1 oz Measuring Cup Cover (BPA-free)
- 1 x 2-in-1 Tamper and Scraper Tool
- 1 x User Guide (This document)

Image: The Chefman Obliterator Blender with its main components, including the motor base, blending jar filled with fresh fruit, and the control dial.
Setup and Assembly
- Place the motor base on a clean, dry, and stable surface.
- Ensure the blending jar is clean and dry.
- Place the blending jar onto the motor base, aligning it correctly until it clicks into place.
- Add your ingredients to the blending jar. Do not exceed the maximum fill line.
- Secure the lid onto the blending jar. Ensure the measuring cup cover is in place unless blending hot liquids (see Operating Instructions).
- Plug the blender into a standard electrical outlet.
Operating Instructions
Control Panel Overview

Image: Detailed view of the blender's control panel, showing the dial with speed settings (1-5), presets (Ice Crush, Auto Blend, Clean), Pulse button, and digital display with countdown timer and alerts.
The blender features a dial control panel with 5 blending speeds, a Pulse option, and 3 preset functions: Ice Crush, Auto Blend, and Clean. The digital display provides a countdown timer and alerts for optimal operation.
Manual Speed Control
Turn the dial to select speeds 1 through 5. Speed 1 is the lowest, and Speed 5 is the highest. Use lower speeds for softer ingredients or light mixing, and higher speeds for tougher ingredients or finer blending.
Pulse Function
Press and hold the "Pulse" button for short bursts of high-speed blending. Release the button to stop. This function is ideal for chopping ingredients, quick mixing, or breaking down larger pieces.
Preset Functions
- Ice Crush: Select this preset to efficiently crush ice. The blender will automatically adjust power and duration for optimal ice crushing results.
- Auto Blend: This intelligent function analyzes the ingredients in the jar and automatically customizes the blending settings to achieve the ideal consistency without guesswork.
- Clean: Use this preset for easy cleaning. Add warm water and a drop of dish soap to the jar, then select the "Clean" preset. (See Maintenance and Cleaning for more details).
Blending Hot Liquids
The 48 oz Tritan blending jar is designed to be heat-resistant. When blending hot liquids, remove the measuring cup cover from the lid to allow steam to escape. For safety, cover the lid opening with a towel to prevent splattering. Always start with a low speed and gradually increase.

Image: The Chefman Obliterator Blender pouring a smooth, orange-colored soup from its jar into a white bowl, demonstrating its capability with hot liquids.
Using the Tamper and Scraper Tool
The included 2-in-1 tamper and scraper tool can be used to push ingredients towards the blades during blending, especially for thick mixtures. Only use the tamper when the lid is securely in place and the measuring cup cover is removed. Do not use other utensils. The scraper end helps remove contents from the jar after blending.
Maintenance and Cleaning
Easy Cleaning Options
The Chefman Obliterator Blender offers two convenient ways to clean:
- "Clean" Preset: Add 2 cups of warm water and 1-2 drops of dish soap to the blending jar. Secure the lid. Select the "Clean" preset on the control dial. The blender will run a cycle to clean itself. After the cycle, rinse the jar thoroughly.
- Dishwasher Safe Accessories: The blending jar, lid, and tamper/scraper tool are top-rack dishwasher safe. Ensure all parts are separated before placing them in the dishwasher.
Motor Base Cleaning
Wipe the motor base with a damp cloth. Do not immerse the motor base in water or any other liquid.
Blade Design
The innovative blunt-blade design ensures safety during cleaning without compromising blending performance. Exercise caution when handling the blades.

Image: The Chefman Obliterator Blender on a countertop, with its blending jar and tamper/scraper tool placed in a dishwasher rack, illustrating the dishwasher-safe components.
Troubleshooting
- Blender does not turn on:
- Ensure the power cord is securely plugged into a working electrical outlet.
- Verify the blending jar is correctly seated and locked onto the motor base. The display may show "Fix Jar" if not properly aligned.
- "Add Liquid" alert:
- This alert indicates that the blender detects insufficient liquid for the ingredients being processed. Add more liquid to achieve the desired consistency and prevent motor strain.
- Motor sounds strained or stops:
- The load might be too heavy or too thick. Add more liquid, or use the tamper tool to push ingredients towards the blades.
- Unplug the unit, remove some ingredients, and try again.
- Ensure the blades are not obstructed by large, hard pieces of food.
- Blender is excessively loud:
- While powerful blenders can produce significant noise, ensure the lid is properly secured and the jar is correctly seated. If unusual or excessive noises persist, discontinue use and contact customer support.
Specifications
| Feature | Detail |
|---|---|
| Brand | Chefman |
| Model Number | RJ27-T1-CONCRETE-AM |
| Power | 1380W |
| Voltage | 120V |
| Capacity | 48 Fluid Ounces (approx. 1.4 Liters) |
| Material | Tritan (Jar), Stainless Steel (Blade) |
| Special Features | Auto-Blend, Ice Crush, Clean Presets, 5 Speeds, Pulse, Digital Display, Tamper/Scraper |
| Dimensions (D x W x H) | 4.5"D x 6"W x 16"H |
| Item Weight | 9.92 pounds |
| UPC | 810170922305 |

Image: A diagram illustrating the dimensions of the Chefman Obliterator Blender: 16" H, 7.1" D, and 7.3" W.
Warranty and Support
This Chefman Obliterator Blender is backed by a 5-year warranty provided by Chefman. For warranty claims, technical support, or any questions regarding your product, please visit the official Chefman website or contact their customer service.
For more information, visit: www.chefman.com





