Labconco FreeZone 2.5 Liter Benchtop Freeze Dry System

1. Introduction

The Labconco FreeZone 2.5 Liter Benchtop Freeze Dry System (Model 7670521) is engineered for efficient lyophilization of light sample loads or for personal laboratory use. Its compact design allows for placement in tight spaces, making it ideal for various research and development applications. This system features a robust 1/4 hp refrigeration system and an upright stainless steel collector coil designed to remove up to 2 liters of water in 24 hours, with a total ice capacity of 2.5 liters before defrosting is required.

Key features include a CFC-free refrigeration system, corrosion-resistant exterior, automatic start-up with manual overrides, and an LCD display for monitoring operational parameters and alarm messages. This manual provides essential information for the safe and effective setup, operation, and maintenance of your FreeZone Freeze Dry System.

2. Safety Information

Always adhere to standard laboratory safety practices when operating this equipment. Read and understand all instructions before use. Failure to do so may result in injury or damage to the equipment.

• Ensure the unit is connected to a properly grounded electrical outlet (115V, 60 Hz).
• Do not operate the system with damaged cords or plugs.
• Always wear appropriate personal protective equipment (PPE), such as safety glasses and gloves, when handling samples or performing maintenance.
• Avoid contact with cold surfaces, as the collector coil reaches temperatures as low as -50°C (-58°F).
• Ensure adequate ventilation around the unit to prevent overheating.
• Do not block air vents.
• Only use the system for its intended purpose of freeze drying.
• Disconnect power before performing any maintenance or service.

3. Setup

Proper setup is crucial for optimal performance and safety. The FreeZone system requires a separate vacuum pump, drying accessory, and freeze dry glassware, which are not included and must be acquired separately.

1. Placement: Position the freeze dry system on a stable, level benchtop or cart. Ensure there is sufficient space around the unit for ventilation and access. The compact design allows it to fit in tight spaces.
2. Electrical Connection: Connect the system to a dedicated 115V, 60 Hz grounded electrical outlet.
3. Vacuum Pump Connection: Connect your external vacuum pump to the system using the provided 3 feet of 3/4 inch ID vacuum hose and 2 clamps. Ensure all connections are secure to maintain vacuum integrity.
4. Accessory Attachment: Utilize the 3-inch diameter accessory attachment port for connecting your drying accessory and glassware.

Figure 3.1: Labconco FreeZone 2.5 Liter Benchtop Freeze Dry System shown with an external vacuum pump on a laboratory cart. A user is shown interacting with the system, demonstrating the connection of a sample flask.

4. Operating Instructions

The FreeZone system is designed for user-friendly operation with automated features and manual overrides.

1. Power On: Locate the power switch and turn the unit on.
2. Automatic Start-up: The system features a one-button automatic refrigeration and vacuum start-up. Press the designated button to initiate the cooling of the collector and the pull-down of the vacuum.
3. Manual Overrides: Manual override switches are available for independent control of refrigeration and vacuum functions, allowing for greater flexibility in specific applications.
4. Monitoring: The LCD display provides real-time information on set-up and operating parameters. It also displays alarm messages and the total number of hours since refrigeration and vacuum were last serviced.
5. Vacuum Control and Break Valve: Utilize the integrated vacuum control and break valve to manage the vacuum level during the freeze-drying process.
6. Moisture Sensor: The patented moisture sensor helps detect moisture in the collector, providing an early warning for potential issues.
7. Sample Loading: Once the collector has reached its target temperature (-50°C) and the vacuum is established, attach your freeze-dry glassware containing the pre-frozen samples to the accessory attachment port.

5. Maintenance

Regular maintenance ensures the longevity and optimal performance of your freeze dry system.

• Defrosting: The upright stainless steel collector coil can hold up to 2.5 liters of ice. Defrost the collector when necessary, typically after 2 liters of water have been removed or when ice buildup impedes performance. Use the collector drain hose for convenient drainage of melted ice.
• Vacuum Pump Service: The LCD display tracks the total number of hours since the vacuum pump was serviced. Refer to your vacuum pump's manual for its specific maintenance schedule, including oil changes and filter replacements.
• Refrigeration System Service: The LCD display also tracks the total number of hours since the refrigeration system was serviced. While routine user service is minimal, professional service may be required if performance degrades.
• Cleaning: Clean the exterior of the unit with a mild detergent and a soft cloth. Avoid abrasive cleaners or solvents.
• Inspection: Periodically inspect the vacuum hose and clamps for any signs of wear or damage. Replace as needed to maintain vacuum integrity.

6. Troubleshooting

The system is equipped with an audible/visual alarm system to alert you to abnormal events. Consult the LCD display for specific alarm messages.

For issues not listed or if troubleshooting steps do not resolve the problem, please contact Labconco customer support.

7. Specifications

• Model Number: 7670521
• Capacity: 2.5 Liter ice capacity, removes 2 liters of water in 24 hours
• Refrigeration System: 1/4 hp, CFC-free, cools collector to -50°C (-58°F)
• Collector Coil: Upright stainless steel
• Exterior: Corrosion-resistant glacier white epoxy-coated steel and brushed stainless steel with blue accents
• Display: LCD for parameters, alarms, and service hours
• Connectivity: RS-232 port
• Accessory Port: 3" diameter
• Vacuum Hose: 3' of 3/4" ID vacuum hose and 2 clamps included
• Electrical Requirements: 115V, 60 Hz
• Package Dimensions: 30 x 25.5 x 21 inches
• Weight: 97 Pounds

8. Warranty and Support

For information regarding product warranty, service, or technical support, please contact Labconco directly. Ensure you have your model number (7670521) and serial number ready when contacting support.

Manufacturer: Labconco

For the most current contact information, please visit the official Labconco website or refer to the documentation provided with your purchase.