Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Dukers DSM-48R Commercial Glass Swing 2-Door Merchandiser Refrigerator. Please read this manual thoroughly before using the appliance and retain it for future reference.

Image: Front view of the Dukers DSM-48R Commercial Glass Swing 2-Door Merchandiser Refrigerator.
Safety Information
Always follow basic safety precautions when using electrical appliances to reduce the risk of fire, electric shock, and injury. This appliance is designed for commercial use only.
- Ensure the unit is properly grounded.
- Do not store explosive substances such as aerosol cans with a flammable propellant in this appliance.
- Keep ventilation openings clear of obstruction.
- Do not use mechanical devices or other means to accelerate the defrosting process, other than those recommended by the manufacturer.
- Do not damage the refrigerant circuit.
- Only qualified personnel should service this appliance.
Unpacking and Installation
Unpacking
Carefully remove all packaging materials. Inspect the refrigerator for any shipping damage. Report any damage immediately to the carrier and your dealer.
Placement
Place the unit on a strong, level surface capable of supporting its weight (approximately 385 lbs). Ensure adequate ventilation around the unit, especially near the bottom-mounted compressor. Avoid direct sunlight or heat sources.
Movement
The unit is equipped with 4 locking swivel casters (3 inches) for easy movement and positioning. Engage the stabilizing breaks on the casters once the unit is in its final position to prevent unintended movement.
Electrical Connection
This commercial refrigerator comes with a NEMA 5-15P plug for simple plug-in installation. Ensure the electrical outlet meets the unit's requirements: 115V/60Hz, 9.8 Amps, 690 watts. The power cord is 9 ft long.
Operation
Temperature Control
The unit features digital temperature controls with an LED display for precise adjustment. The temperature range is approximately 32°F to 50°F. Refer to the specific controller manual for detailed instructions on setting the desired temperature.
Lighting
Super bright LED lighting illuminates the interior, making merchandise easily visible. There is also a backlit marquee for additional display.
Shelving
The refrigerator includes 10 adjustable and removable wire shelves (5 on each side) to accommodate various merchandise sizes. Ensure shelves are securely placed before loading products.
Maintenance
Cleaning
Regular cleaning of the interior and exterior surfaces is recommended. Use a mild detergent and warm water. For glass doors, use a non-abrasive glass cleaner. Ensure the unit is unplugged before cleaning.
Defrosting
The unit features automatic defrosting. This system manages ice buildup, eliminating the need for manual defrosting under normal operating conditions.
Condenser Coil
The bottom-mounted 3/5 HP compressor is designed for efficiency. Periodically clean the condenser coils to ensure optimal performance and energy efficiency. A louver panel for the compressor facilitates heat dissipation.
Drainage System
The automatic drainage and evaporation system handles condensate water. Ensure the drainage path is clear of obstructions.
Troubleshooting
Before contacting service, check the following common issues:
- Unit not powering on: Check power cord connection and circuit breaker.
- Temperature too high: Ensure doors are closed properly, condenser coils are clean, and there is adequate ventilation. Verify temperature settings.
- Excessive noise: Check for loose components or obstructions around the fan.
For issues not resolved by these steps, contact qualified service personnel.
Specifications

Image: Technical specifications and features of the Dukers DSM-48R.
| Feature | Detail |
|---|---|
| Brand | Dukers |
| Model | DSM-48R |
| Capacity | 48.73 Cubic Feet |
| Product Dimensions (D x W x H) | 31.8" x 54.1" x 79.5" |
| Item Weight | 385 Pounds |
| Number of Doors | 2 |
| Door Material Type | Glass (Anti-fogging tempered glass) |
| Shelves | 10 adjustable and removable wire shelves (5 on each side) |
| Temperature Range | 32°F to 50°F (approx.) |
| Defrost System | Automatic |
| Compressor | Heavy-duty 3/5 HP bottom mounted |
| Refrigerant | R290 Natural Refrigerant |
| Voltage | 115V/60Hz |
| Amperage | 9.8 Amps |
| Wattage | 690 watts |
| Power Cord | 9 ft. with NEMA 5-15P plug |
| Noise Level | 45 Decibels |
| Special Features | 4 locking swivel casters, Digital temperature controls with LED display, Interior LED lighting, Backlit marquee |
| Certifications | NSF/ANSI 7, ETL Listed / ETL Sanitation |

Image: Detailed dimensions diagram for the Dukers DSM-48R.
Warranty and Support
Manufacturer Warranty for commercial locations only:
- 2 year parts and labor
- 5 year on compressor
For warranty claims or technical support, please refer to the contact information provided by your dealer or the manufacturer's official website.