Labconco Shell Freezer, Cat # 7949020
Fixed Temperature
-40°C
Capacity
12 L (0.42 cu ft)
Dimensions (L x W x H)
22.1 x 14.5 x 19.7 in (56.1 x 36.8 x 50 cm)
Features
- Provides a controlled cooling environment for thin sample coatings
- Enhances freeze drying by supporting increased sample surface area
- Ideal for preparing shell-frozen samples in flasks
- Compact benchtop design conserves valuable lab space
- Compatible with laboratory freeze drying workflows
- Ensures uniform cooling for consistent sample preparation
- Durable design for reliable and long-lasting use
- Optimized for scientific and laboratory applications
The Labconco Shell Freezer, Cat # 7949020 is in excellent condition. Labconco FreeZone shell freezers provide a means to freeze a thin coating of a sample on the inside walls of flasks. Since shell frozen samples have a greater surface area than slab frozen samples, freeze drying is enhanced. Prefreezes to -40C.
All of our equipment is fully tested to perform at factory specifications before being shipped.
INCLUDED:
The Labconco Shell Freezer, Cat # 7949020 includes:
The Labconco Shell Freezer, Cat # 7949020 includes:
- > Power Cord
- > Operator's Guide
- > Full 180 Day Parts and Labor Warranty
Labconco FreeZone Shell Freezer Specifications
|
Temperature |
-40C |
|
Capacity |
12 L (0.42 cu ft) |
|
Dimensions (L x W x H) |
56.1 x 36.8 x 50 cm (22.1 x 14.5 x 19.7 in) |
|
Electrical Requirements |
115V, 60Hz, 6A |
Recertification Inspection Protocol
- Inspect the display for pixel clarity and brightness issues; replace any dim or defective pixels to ensure optimal visual quality.
- Test each button for responsiveness, resistance, and continuity; replace any buttons that show wear or unresponsiveness.
- Check the acrylic/glass lid for structural integrity, looking for cracks or chips; replace if any damage is found.
- Examine all external gasket seals for elasticity, cracks, or tears; replace compromised seals with OEM-approved parts.
- Remove and replace all manifold ports with new OEM parts, ensuring proper fit and sealing to maintain system integrity.
- Drain and replace the oil, verifying the new oil’s viscosity and particulate levels fall within operational standards.
- Conduct diagnostic checks on all PCB test points, replacing any malfunctioning components to maintain circuit integrity.
- Inspect all internal rubber connections and gaskets for cracks or brittleness; replace compromised parts as needed.
- Disassemble and clean the condenser coils and fan assembly to remove dust; replace worn components to ensure efficiency.
- Confirm the start capacitor for the refrigeration system meets the manufacturer-specified capacitance range; replace if readings deviate.
- Test and calibrate all internal sensors and safety switches, ensuring accurate readings and replacing any faulty components.
- Verify displayed temperatures by cross-referencing with independent calibrated probes; recalibrate the system if discrepancies are detected.
- Check vacuum pressure using an independent gauge, aiming for ~0.40 mbar; address any leaks or inefficiencies affecting vacuum levels.
- Confirm the system achieves and maintains low temperatures (~-50°C or ~-80°C) using certified measurement tools; troubleshoot as necessary.
- Inspect all external surfaces, labels, and interfaces for cosmetic wear; address any scratches, blemishes, or visible signs of damage.
Technician Inspection and Recertification Checklist
The Following Checklist Is to Be Performed on All Incoming and Outgoing Equipment| Task | Completed? | Remarks? |
| Inspect display for pixel issues and replace if needed | Completed | |
| Test button functionality and replace any defective buttons | Completed | |
| Examine door seal and lock functionality; replace if compromised | Completed | |
| Conduct PCB test point diagnostics and replace as needed | Completed | |
| Verify compressor and internal fan functionality | Completed | |
| Confirm temperature probe accuracy with NIST-traceable probe | Completed | |
| Inspect all wiring for frays, tears, or breakages | Completed | |
| Test start capacitor capacitance range; replace if needed | Completed | |
| Replace all internal filters and clean condenser fins | Completed | |
| Test alarm battery for full functionality | Completed | |
| Run 72-hour test with data recorder to confirm stable temperatures | Completed | |
| Conduct cosmetic inspection and address any issues | Completed |
102 Tide Mill Road, Hampton NH 03842
customerservice@marshallscientific.com | (603) 601-8511 |
www.marshallscientific.com
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