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Labconco Shell Freezer, Cat # 7949020

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Our Price: $4,395.00

Condition: Fully Recertified and Tested to Perform at Manufacturer Specifications
Warranty: 180-Day Full Parts and Labor (Click for Info)
Typically Ships Within: 3 to 5 Business Days

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Quantity in Stock:1

Product Code: LA-SF

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Description

Recertification Protocol

Technical Specification Sheet

Labconco Shell Freezer, Cat # 7949020

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:

> 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

Labconco Shell Freezer Manual

Click Here to View all the Technical Specs for the Shell Freezer

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Labconco Shell Freezer - Marshall Scientific

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