1. Introduction
This manual provides essential information for the safe and efficient operation, installation, and maintenance of your Dukers D28F Commercial Single Door Freezer. Please read all instructions carefully before using the appliance to ensure proper function and to prevent injury or damage.
The Dukers D28F is a commercial reach-in freezer designed for professional use, featuring a stainless steel interior and exterior, digital temperature controls, and automatic defrosting.
Image: Angled front view of the Dukers D28F Commercial Single Door Freezer, showcasing its stainless steel finish and casters.
2. Safety Information
WARNING: Risk of electric shock. Disconnect power before servicing.
Observe the following safety precautions to reduce the risk of fire, electric shock, or injury:
- Ensure the freezer is connected to a properly grounded 115V/60Hz electrical outlet with a NEMA 5-15P plug. Do not use extension cords.
- Do not store explosive substances such as aerosol cans with a flammable propellant in this appliance.
- Keep ventilation openings in the appliance enclosure or in the built-in structure 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. This appliance uses R290 Natural Refrigerant.
- Only qualified service personnel should perform repairs.
3. Product Overview
The Dukers D28F is a robust commercial freezer designed for demanding environments. Key features include:
- Construction: High-quality brushed stainless steel interior and exterior for durability and hygiene.
- Door: Single, self-closing, reversible door with recessed handle.
- Refrigeration System: Heavy-duty 3/4 HP bottom-mounted compressor, R290 Natural Refrigerant, automatic defrosting.
- Temperature Control: Digital controls with LED display for precise temperature adjustment (0 to -8°F approx.).
- Storage: 17.79 cu.ft capacity with 4 adjustable and removable wire shelves.
- Mobility: 4 locking swivel casters (5 inches) for easy positioning.
- Certifications: NSF/ANSI 7 Standard for Commercial Refrigerators and Freezers, ETL Listed / ETL Sanitation.
Image: Front view of the Dukers D28F Commercial Single Door Freezer, showing the digital display and recessed handle.
4. Setup
4.1 Unpacking
- Carefully remove all packaging materials, including tape and protective film.
- Inspect the freezer for any shipping damage. Report any damage to the carrier immediately.
- Ensure all included components are present: 4 adjustable and removable wire shelves, casters, and a 9 ft power cord.
4.2 Placement
- Place the freezer on a strong, level surface capable of supporting its weight (approximately 287 pounds empty).
- Allow adequate clearance around the unit for proper ventilation (minimum 4 inches from walls).
- Avoid direct sunlight or proximity to heat-generating appliances. The ambient temperature should not exceed 100.4°F.
- Install the 5-inch locking swivel casters for mobility. Ensure they are securely tightened and locked once the freezer is in its final position.
4.3 Electrical Connection
- Before plugging in, ensure the power switch on the freezer is in the OFF position.
- Connect the 9 ft power cord to a dedicated 115V/60Hz, 9.5 Amp circuit with a NEMA 5-15P receptacle.
- Do not overload the circuit or use adapters.
4.4 Initial Start-up
- After plugging in, wait at least 2 hours before turning on the unit to allow refrigerants to settle.
- Turn the power switch to the ON position. The digital display will illuminate.
- Allow the freezer to operate empty for several hours (e.g., 4-6 hours) to reach the desired temperature before loading products.
5. Operating Instructions
5.1 Temperature Control
- The digital control panel allows for precise temperature adjustment. Refer to the specific instructions on the control panel for setting the desired temperature.
- The operating temperature range is approximately 0 to -8°F.
- The LED display shows the current internal temperature.
5.2 Loading the Freezer
Image: Interior view of the Dukers D28F Commercial Single Door Freezer, showing the adjustable wire shelves.
- Arrange products to allow for proper air circulation around items. Do not block the internal air vents.
- The 4 wire shelves can be adjusted or removed to accommodate various product sizes.
- Avoid overloading shelves beyond their weight capacity.
5.3 Door Operation
- The door is self-closing, which helps maintain internal temperature and energy efficiency.
- Minimize door openings to prevent temperature fluctuations and frost buildup.
- The door is reversible; consult a qualified technician for instructions on changing the door swing direction.
6. Maintenance
6.1 Cleaning the Interior
- Disconnect power before cleaning.
- Remove all food items and shelves.
- Clean the interior surfaces with a mild detergent and warm water. Rinse thoroughly and dry completely.
- Do not use abrasive cleaners, steel wool, or harsh chemicals.
6.2 Cleaning the Exterior
- Wipe down the stainless steel exterior with a soft cloth and a stainless steel cleaner or mild detergent.
- Polish in the direction of the grain to avoid streaks.
6.3 Condenser Coil Cleaning
Image: Rear view of the Dukers D28F Commercial Single Door Freezer, highlighting the bottom-mounted compressor and condenser coil area.
- The condenser coil should be cleaned regularly (e.g., monthly) to ensure optimal performance and energy efficiency.
- Disconnect power to the unit.
- Locate the condenser coil, typically near the bottom-mounted compressor at the rear of the unit.
- Use a stiff brush or vacuum cleaner with a brush attachment to remove dust and debris from the coil fins.
- Ensure the area is clear of obstructions before restoring power.
6.4 Automatic Defrosting
- The unit features an automatic defrosting system, which minimizes manual intervention.
- During the defrost cycle, the internal temperature may temporarily rise slightly. This is normal.
- Ensure the drain pan is clear and functioning correctly to collect defrost water.
7. Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Freezer not operating | No power to the unit; power switch off; circuit breaker tripped. | Check power connection; ensure switch is ON; reset circuit breaker. |
| Temperature too high | Door left open; condenser coil dirty; thermostat set incorrectly; excessive product load. | Ensure door is closed; clean condenser coil; adjust thermostat; reduce product load. |
| Excessive noise | Unit not level; loose components; fan obstruction. | Level the unit; check for loose parts; ensure fan is clear. |
| Water on floor | Drain pan overflowing; clogged drain line. | Empty/clean drain pan; clear drain line. |
If problems persist after attempting these solutions, contact customer support or a qualified service technician.
8. Specifications
| Feature | Detail |
|---|---|
| Model | D28F |
| Brand | Dukers Appliance Co. USA Ltd |
| Capacity | 17.79 Cubic Feet |
| Dimensions (W x D x H) | 27 1/2″ x 32 5/8″ x 80 3/8″ (Overall) |
| Item Weight | 287 pounds |
| Temperature Range | 0 to -8°F (approx.) |
| Ambient Temperature | Up to 100.4°F |
| Electrical Requirements | 115V/60Hz, 9.5 Amps, 750 Watts |
| Compressor | Heavy-duty 3/4 HP, bottom-mounted |
| Refrigerant | R290 Natural Refrigerant |
| Defrost Type | Automatic |
| Noise Level | 35 Decibels |
| Plug Type | NEMA 5-15P |
| Shelves | 4 adjustable and removable wire shelves |
| Certifications | NSF/ANSI 7 Standard, ETL Listed / ETL Sanitation |
9. Warranty and Support
The Dukers D28F Commercial Single Door Freezer comes with the following manufacturer warranty for commercial locations:
- 3 Year Parts & Labor Warranty
- 5 Year Compressor Warranty
Note: There is no residential warranty for this product.
For warranty claims, technical support, or service inquiries, please contact Dukers Appliance Co. USA Ltd directly. Refer to your purchase documentation for contact information or visit the official Dukers website.
