ATHOM-28

Atosa ATHOM-28 26" Open Air Merchandiser

Overview

The Atosa ATHOM-28 is a compact, horizontal open air merchandiser built for high-visibility product display in retail and food service environments. Its open-front design with glass side panels allows customers easy access to pre-chilled items while maximizing visual appeal. With a 4.1 cubic foot capacity and a sleek black exterior paired with a stainless steel interior, this unit combines functionality with a modern aesthetic suitable for various commercial settings.

Key Features

• Open Air Design: Glass front and side panels provide unobstructed viewing and customer access to displayed items.
• Precise Temperature Control: Digital temperature controller and display allows for easy monitoring and adjustment, maintaining an internal temperature range of 33°F to 40°F.
• Enhanced Product Lighting: Bright LED interior lighting is installed under the shelf and at the interior top to highlight merchandise.
• Durable Construction: Features a black exterior and a easy-to-clean stainless steel interior.
• Mobility: Comes with pre-installed casters for easy repositioning within your space.
• Adjustable Storage: Includes one stainless steel shelf and one floor shelf. Each shelf on the ATHOM-28 has a load capacity of 50 lbs (22.7 kg).
• Eco-Friendly Refrigerant: Uses R290 refrigerant.

Specifications

• Model: ATHOM-28
• Exterior Dimensions (W x D x H): 26-13/16" x 34-9/16" x 44-3/8" (27-5/8" x 34-5/8" x 44-3/8" per spec sheet)
• Interior Capacity: 4.1 Cubic Feet
• Shelf Dimensions: 22-3/4" x 11"
• Net Weight: 145 lbs
• Gross Weight: 180 lbs
• Voltage/Hz/Phase: 115V / 60Hz / 1 Phase
• Plug Type: NEMA 5-20P
• Rated Current: 8.5 Amps
• Power (Wattage): 800W
• Compressor HP: 3/5 HP
• Refrigerant: R290 (4.9 oz / 140g charge)
• Temperature Range: 33°F – 40°F (35°F – 38°F per spec sheet)

Installation & Requirements

Proper installation is critical for performance and safety. The unit contains flammable refrigerant (R290).

• Location: Install indoors on a flat, stable surface in a dry, well-ventilated area. Avoid direct sunlight and proximity to heat sources.
• Clearances: Maintain a minimum clearance of 4 inches (10 cm) on both sides and between the back of the unit and any wall or object to ensure adequate airflow for the condenser.
• Power Supply: Requires a dedicated 110V–120V, single-phase, properly grounded outlet with a three-pin receptacle. Do not use an extension cord or share the outlet with other appliances.
• Initial Setup: After positioning, lock the front caster brakes or adjust leveling feet for stability. Allow the unit to sit for at least 2 hours after moving before initial power-up. Clean the interior before use.
• First Operation: Run the unit empty for 24 hours before loading any products to verify proper system function. Only place pre-chilled items inside once the internal temperature has reached the specified range.
• Handling: Never tilt the unit beyond 45 degrees. The glass components are fragile.

Operation

Separate switches control the lights and the cooling system (compressor, controller, and fan motors).

• Setting the Temperature: Press and hold the SET key on the digital controller for more than 2 seconds. The current set point will display, and the °C or °F LED will blink. Use the △ or ▽ buttons to adjust the value. Press SET again or wait 10 seconds to save.
• Advanced Settings: Enter programming mode by pressing SET and ▽ simultaneously for 3 seconds. Use SET to cycle through parameters and △/▽ to adjust values. Press SET + △ or wait 15 seconds to exit.
• Loading: Do not exceed 50 lbs per shelf. Ensure products do not block the air outlets or inlets or directly contact the side glass. Never place excessively hot food, medicine, or explosive/flammable substances like aerosol cans inside.
• Power Interruption: If unplugged or after a power outage, wait at least 5 minutes before restarting the unit.

Cleaning & Maintenance

Disconnect power before any cleaning or maintenance.

• Interior/Exterior: Clean at least once a week for food safety. Use a mild, non-corrosive detergent and water. Wipe thoroughly with a clean, damp cloth to remove residue. Do not use a direct stream of water from a faucet.
• Condenser Coil: Clean the condenser coil at least once a month to maintain efficiency. Remove the bottom front panel with a Phillips screwdriver. Use a vacuum cleaner with a wand attachment and a soft, non-metallic brush to remove dirt and debris. Do not bend the coil fins. Wear gloves and eye protection.
• Glass: Do not apply hot water to cold glass surfaces, as this can cause shattering. Allow glass to warm up gradually before cleaning with warm water.
• General: After cleaning, ensure all parts are completely dry before restoring power. Regularly monitor for unusual noises, odors, or smoke. If any are detected, disconnect power immediately and contact a qualified technician.
• Leak Inspection: Periodically check all connectors and welding joints for signs of oil stains, which may indicate a refrigerant leak. Only a qualified professional should perform welding repairs.

Troubleshooting

For complex issues, contact a professional technician or the manufacturer's service team.

• Unit not cooling properly: Potential causes include a temperature controller error code, loose wiring, or an iced-up evaporator coil. Check the drain pan, hose, and heater. Call a service center for diagnosis and adjustment.
• Condensation: During humid seasons, condensation may form on the exterior. This is normal. Simply wipe it off with a dry cloth.
• Damaged Power Cord: If the power cord or plug is damaged, it must be replaced by the manufacturer, an authorized service agent, or a similarly qualified person with an identical cord and plug to prevent risk.

Applications

The ATHOM-28 is designed for displaying and selling pre-chilled beverages, dairy products, vegetables, and fruits. Its compact footprint and attractive display make it ideal for:

• Convenience Stores & Gas Stations
• Grab-and-Go Counters in Cafés or Delis
• Hotel Breakfast Buffets
• University or Office Building Common Areas
• Small-format Grocery Stores
• Supplemental display for salads, desserts, or cold drinks in restaurants

Optional Accessory: A top mount dry display case is available for added non-refrigerated merchandising space above the unit.