Introduction
This manual provides essential information for the safe and efficient operation of your CAMMOO 133Qt 5-Tier 900W Commercial Food Warmer. Please read all instructions carefully before use and retain this manual for future reference. This commercial-grade food warmer is designed to maintain food at optimal serving temperatures, offering versatility for various culinary applications.
Safety Instructions
General Safety
- Always place the unit on a stable, level, and heat-resistant surface.
- Ensure adequate ventilation around the unit. Do not block air vents.
- Do not operate the unit with wet hands or while standing on a wet surface.
- Keep children and unauthorized personnel away from the appliance during operation.
- Never immerse the unit in water or other liquids.
- Use only food-grade containers and utensils inside the warmer.
- Do not use the appliance for purposes other than its intended use.
Electrical Safety
- Connect the unit to a properly grounded 120V electrical outlet.
- Do not use extension cords unless absolutely necessary and ensure they are rated for the appliance's wattage (900W).
- Regularly inspect the power cord for damage. If damaged, do not use the appliance and contact qualified service personnel.
- Unplug the unit from the power outlet before cleaning, maintenance, or when not in use.
- The unit features auto-shutoff and overheat protection. If the unit shuts off unexpectedly, unplug it and allow it to cool before restarting.
Product Overview
The CAMMOO 133Qt Food Warmer is constructed with durable stainless steel and features a double-tempered glass door for visibility and heat retention. It includes five adjustable shelves and a water tray for humidity control.
Components
- Control Panel: Features an adjustable thermostat (86-185°F) and temperature gauge.
- Heating Element: 900W 304 blued stainless steel for rapid and even heating.
- Shelves: Five adjustable mesh racks to accommodate various food sizes.
- Water Tray: Located at the bottom to maintain humidity and prevent food from drying out.
- Doors: Double-tempered glass doors with magnetic seals for heat retention and visibility.

Figure 1: Front view of the CAMMOO 133Qt 5-Tier Commercial Food Warmer.

Figure 2: Close-up of the control panel with adjustable thermostat and temperature gauge.
Setup
Before first use, ensure all packaging materials are removed. Place the unit in its desired location, ensuring proper clearance for ventilation and access to a power outlet.
Shelf Installation
- Open the tempered glass doors.
- Insert the mesh racks into the desired height slots on the interior side supports. The racks are adjustable to accommodate various item sizes, such as 13-inch pizzas or 1/1 hotel pans.
- Ensure all racks are securely seated before placing food items.

Figure 3: Interior of the food warmer demonstrating adjustable shelving for various capacities.
Water Tray Setup
- Locate the water tray at the bottom of the unit.
- Fill the water tray with clean water before turning on the unit. This helps maintain humidity and prevents food from drying out.
- Regularly check and refill the water tray as needed during operation.
Operating Instructions
Powering On and Temperature Setting
- Plug the power cord into a grounded 120V electrical outlet.
- Turn the power switch to the 'ON' position.
- Rotate the adjustable thermostat knob to your desired temperature between 86°F and 185°F (30°C to 85°C).
- Allow the unit to preheat for approximately 20-30 minutes to reach the set temperature. The temperature gauge on the control panel will indicate the current internal temperature.
Food Placement and Usage
- Place pre-cooked, hot food items directly onto the mesh racks or in appropriate food-grade containers.
- Avoid overloading the shelves to ensure proper air circulation and even heating. The 360° hot air circulation system works best with adequate space.
- Close the tempered glass doors securely. The magnetic seals help maintain internal temperature.
- Monitor the temperature gauge to ensure food remains at a safe and desirable serving temperature.
Versatile Functions (4-in-1)
- Keep Warm: Ideal for maintaining hot meals, pastries, and snacks at serving temperature.
- Dough Proofing: The adjustable low-temperature settings (e.g., 86°F) are suitable for rising dough.
- Food Dehydration: Lower temperature settings can be used for gentle dehydration of certain snacks.
- Thawing: Use low, controlled heat for gentle thawing of frozen foods.
Video 1: Demonstration of the CAMMOO 5-Tier 900W Commercial Food Warmer in operation, highlighting its electric catering hot box features.
Video 2: Overview of the CAMMOO 133Qt 5-Tier 900W Commercial Food Warmer, showcasing its design and features.
Maintenance
Cleaning
- Always unplug the unit and allow it to cool completely before cleaning.
- Remove all shelves and the water tray. These components can be washed with warm, soapy water and thoroughly dried.
- Wipe the interior and exterior surfaces of the unit with a damp cloth and mild detergent. Avoid abrasive cleaners or scouring pads that could damage the stainless steel finish.
- Ensure all surfaces are dry before reassembling and operating the unit.
Care and Storage
- Store the food warmer in a clean, dry place when not in use.
- Regularly check the magnetic door seals for any signs of wear or damage to ensure optimal heat retention.
- The 304 blued stainless steel heating element is designed for long-term durability; however, avoid direct contact with sharp objects.
Troubleshooting
If you encounter any issues with your food warmer, please refer to the following common troubleshooting steps:
- Unit not heating: Check if the power cord is securely plugged in and the power switch is 'ON'. Verify the circuit breaker has not tripped.
- Temperature inconsistent: Ensure the doors are fully closed and sealed. Check if the water tray has sufficient water. Avoid overloading the unit.
- Food drying out: Ensure the water tray is filled. The water tray is crucial for maintaining humidity.
- Unusual odors: Before first use, some manufacturing odors may be present. Operate the unit empty for a short period in a well-ventilated area. If odors persist, clean the unit thoroughly.
For issues not covered here, please contact customer support.
Specifications
| Feature | Specification |
|---|---|
| Model Number | NT520 |
| Capacity | 133 Quarts |
| Wattage | 900 Watts |
| Voltage | 120 Volts |
| Temperature Range | 86°F - 185°F (30°C - 85°C) |
| Number of Tiers/Shelves | 5 |
| Material | Stainless Steel, Tempered Glass |
| Product Dimensions (L x W x H) | 24.2 x 16.3 x 28.74 inches |
| Item Weight | 68.7 Pounds |
Warranty and Support
This product comes with a standard manufacturer's warranty. For detailed warranty information, please refer to the documentation included with your purchase or contact CAMMOO customer support. For any technical assistance, parts, or service inquiries, please reach out to the seller or manufacturer directly.