1. Introduction
This manual provides essential information for the safe and efficient operation of your Global Industrial Undercounter Laboratory Freezer, Model DW-25L92. This unit is designed for precise temperature control, ideal for laboratories, medical rooms, pharmacies, and similar facilities requiring storage between -10°C and -25°C. Please read these instructions thoroughly before installation and use, and retain this manual for future reference.
2. Safety Information
To prevent personal injury or damage to the unit, always observe the following safety precautions:
- Ensure the freezer is connected to a properly grounded electrical outlet with the correct voltage (115V).
- Do not operate the freezer with a damaged power cord or plug.
- Keep ventilation openings clear of obstructions.
- Do not store explosive substances or flammable materials inside the freezer.
- Only qualified personnel should perform repairs or maintenance.
- Always unplug the unit before cleaning or performing maintenance.
- Keep children away from the appliance.
3. Setup and Installation
3.1 Unpacking
- Carefully remove all packaging materials, including foam and adhesive tape.
- Inspect the freezer for any shipping damage. Report any damage immediately to your supplier.
- Remove any internal packing materials and accessories.
3.2 Placement
- Place the freezer on a firm, level surface capable of supporting its weight when fully loaded.
- Ensure adequate ventilation around the unit. Maintain a minimum of 4 inches (10 cm) clearance from walls on the sides and rear, and 12 inches (30 cm) above.
- Avoid direct sunlight or proximity to heat sources (e.g., ovens, radiators).
- The unit is designed for undercounter installation, ensuring proper airflow is maintained.
Figure 3.2.1: Rear view of the freezer, illustrating the condenser coils and the importance of maintaining clearance for proper ventilation.
3.3 Power Connection
- Allow the freezer to stand upright for at least 2-4 hours before plugging it in. This allows refrigerants to settle.
- Connect the power cord to a dedicated, grounded 115V, 60Hz electrical outlet. Do not use extension cords or adapter plugs.
3.4 Initial Cleaning
- Before first use, clean the interior and exterior surfaces with a mild detergent and warm water. Rinse thoroughly and dry with a soft cloth.
3.5 Key Lock Operation
- The freezer is equipped with a cylinder lock for secure access. Insert the key and turn to lock or unlock the door. Keep spare keys in a safe location.
Figure 3.5.1: Detail of the digital thermostat LED display and the integrated key lock for secure access.
4. Operating Instructions
4.1 Powering On and Initial Cooling
- After proper installation and allowing the unit to settle, plug the freezer into the power outlet.
- The digital thermostat LED display will illuminate, showing the current internal temperature.
- Allow the freezer to operate empty for at least 4-6 hours to reach the desired temperature before loading contents.
4.2 Temperature Control
- The freezer features a large front digital Thermostat LED Display for easy temperature monitoring and adjustment.
- The operating temperature range is between -10°C and -25°C. Refer to the specific controls on the display panel for setting the desired temperature. Typically, there are 'Set' or 'Mode' buttons and 'Up'/'Down' arrows.
- Once the desired temperature is set, the display will revert to showing the actual internal temperature.
4.3 Loading Contents
- Ensure the freezer has reached the set temperature before loading any materials.
- Distribute contents evenly to allow for proper air circulation. Do not block the internal air vents.
- Avoid overloading the freezer, as this can hinder cooling performance.
- The unit includes internal drawers for organized storage.
Figure 4.3.1: Interior view of the freezer, highlighting the three pull-out drawers for organized storage of laboratory materials.
5. Maintenance
5.1 Cleaning
- Exterior: Clean the exterior surfaces with a soft cloth and mild detergent. Avoid abrasive cleaners or solvents.
- Interior: Periodically clean the interior with a solution of baking soda and water (2 tablespoons baking soda to 1 quart water) or a mild, non-abrasive cleaner. Rinse thoroughly and dry.
- Door Gasket: Clean the door gasket regularly to ensure a tight seal. Use warm, soapy water and dry completely.
5.2 Defrosting
Frost buildup can reduce cooling efficiency. Defrost the freezer when frost accumulation reaches approximately 1/4 inch (6 mm) thickness.
- Unplug the freezer from the power outlet.
- Remove all contents and store them in another suitable freezer or cooler.
- Leave the freezer door open to allow frost to melt naturally. Place towels on the floor to absorb water.
- Do not use sharp objects or heating devices to remove frost, as this can damage the cooling system.
- Once defrosted, clean and dry the interior thoroughly before plugging the unit back in and reloading contents.
5.3 Power Cord Inspection
- Regularly inspect the power cord for any signs of damage, such as fraying or cuts. If damaged, contact a qualified technician for replacement.
6. Troubleshooting
Before contacting service, review the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Freezer does not operate | No power; Power cord unplugged; Circuit breaker tripped. | Check power supply; Ensure cord is securely plugged in; Reset circuit breaker. |
| Temperature is not cold enough | Door not closed properly; Excessive door openings; Overloaded with warm items; Poor ventilation; Temperature setting too high. | Ensure door is sealed; Reduce door openings; Allow items to cool before loading; Ensure adequate clearance; Adjust temperature setting lower. |
| Excessive frost buildup | Door not sealed properly; High humidity; Frequent door openings. | Check door gasket for damage; Reduce door openings; Defrost the unit. |
| Unusual noises | Unit not level; Items vibrating inside; Normal compressor operation. | Ensure unit is level; Rearrange contents; Normal operating sounds are common. |
If the problem persists after attempting these solutions, contact customer support for assistance.
7. Specifications
The following are the technical specifications for the Global Industrial Undercounter Laboratory Freezer, Model DW-25L92:
| Feature | Detail |
|---|---|
| Brand Name | Global Industrial |
| Model Number | DW-25L92 (also 2453705) |
| Capacity | 3.2 Cu.Ft. (Effective volume: 2.2 Cu.Ft.) |
| Temperature Range | -10°C to -25°C |
| Power Connection | 115V, 60Hz |
| Installation Type | Undercounter |
| Product Dimensions (D x W x H) | 25" x 23.5" x 32.88" (63.5 cm x 59.7 cm x 83.5 cm) |
| Item Weight | 101.2 pounds (45.9 kg) |
| Color | White |
| Included Components | Assembly Guide |
| Refrigerant | R600a (2.5g) |
Figure 7.1: Front view of the freezer, displaying its compact design and the Global Industrial branding.
8. Warranty and Support
For information regarding the product warranty, please refer to the warranty card included with your purchase or visit the official Global Industrial website. For technical support, troubleshooting assistance beyond this manual, or to inquire about replacement parts, please contact Global Industrial customer service. Ensure you have your model number (DW-25L92) and purchase date available when contacting support.
Global Industrial Distribution, Inc.
11 Harbor Park Drive, Port Washington, New York 11050