Nano DeBEE Gen 1

The Nano DeBEE is a compact benchtop, electric-hydraulic high-pressure homogenizer designed for laboratory R&D. It combines the power and consistency of a hydraulic system with a footprint small enough for laboratory benchtops. It is used for:

• Cell Lysis: Rupturing bacteria (E. coli), yeast, algae, and insect cells.
• Particle Size Reduction: Creating consistent nanoparticles for pharmaceutical or chemical applications.
• Emulsification: Creating stable nano-emulsions and micro-emulsions.
• Dispersions: De-agglomerating solids into liquids.

• Unlike standard homogenizers that rely on a single force, the Nano DeBEE uses a modular Emulsifying Cell (EC). This allows you to tune and mix three distinct mechanical forces - Shear, Cavitation, and Impact - to optimize results for your specific product.

• Yes. Results achieved on the Nano DeBEE are scalable to Pion’s larger pilot and production units (Mini DeBEE, DeBEE 2000 systems) because they utilize the same underlying EC technology.

• The minimum sample volume is approximately 12mL. This low hold-up volume makes it ideal for expensive or scarce R&D materials.

• The Nano DeBEE can operate at pressures up to 45,000 PSI, though standard operation often falls between 20,000 and 30,000 PSI depending on the application.

The Nano DeBEE Emulsifying Cell (EC) can be configured in two main flow patterns:

• Parallel Flow: Product flows straight through the nozzle. Best for maximum cavitation and laminar flow. Often used for cell lysis.
• Reverse Flow: Product exits the nozzle and immediately impacts a reactor wall before reversing direction. Best for maximum impact and shear. Often used for hard-to-break particles or tough emulsions.
• To change from Parallel to Reverse Flow watch this video - Nano DeBEE Changing Process Setup

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• Yes. High-pressure homogenization generates significant heat. The Nano DeBEE typically includes a heat exchanger (cooling coil) at the outlet to bring the product temperature down immediately after processing to preserve sample integrity.

• Yes. The EC is modular. You can swap between Parallel Flow (Cavitation, laminar shear), Reverse Flow (Shear/Impact), or change nozzle sizes (e.g., Z05 vs. Z08) using standard wrenches included in the tool kit. Always ensure the system is depressurized before opening the EC. Parallel flow is typically used in cell lysis, while reverse flow is typically used in emulsions.
• To change the Nozzle, Reactors and Seal watch this video - Nano DeBEE Maintenance - Changing Seals & Reactors

• Pion recommends a yearly preventative maintenance service. However, high-wear parts (seals and gaskets) should be inspected regularly based on usage frequency.

• To replace the Plunger Seal watch this video - Nano DeBEE Maintenance - Changing the Plunger Seal
• To determine if the Plunger Seal need to be replaced follow these steps:

Preparation

• Flush the system with water.
• Depressurize completely (open the priming valve or run until gauge reads 0).
• Power down the unit to prevent accidental stroking.
• Remove the High-Pressure Cylinder
• Disconnect the inlet tubing and the Emulsifying Cell (EC) from the front of the cylinder.
• Using the provided spanner wrench, loosen the large nut/collar holding the High-Pressure Cylinder to the drive body.
• Critical Step: Slowly and carefully pull the cylinder straight out horizontally.
  
  • Why? The plunger remains attached to the drive unit. You are sliding the cylinder off the plunger. If you tilt the cylinder, you might snap the plunger.

Inspect the Plunger (The Piston)

• With the cylinder removed, the plunger is now exposed protruding from the drive end.
• Visual Check: Look for dull streaks or vertical lines running along the length.
• The Fingernail Test: Gently run your fingernail across the surface of the plunger.
  
  • Smooth: The plunger is good.
  • Catching: If your fingernail "catches" or clicks on a scratch, the plunger is scored. It must be replaced. Putting a new seal on a scored plunger will ruin the new seal in minutes.

Inspect the Seal

• The high-pressure seal is located inside the bore of the cylinder you just removed (or sometimes on the carrier, depending on the specific vintage of the Nano DeBEE).
• Use a plastic pick (never metal) to hook the seal and pull it out.
• Look for:
  
  • Extrusion: Does the back edge of the seal look "chewed" or ragged? (Indicates high pressure gap extrusion).
  • Flat Spots: Is the O-ring profile flattened? (Indicates compression set/aging).
  • Debris: Are there particles embedded in the polymer?

Decision

• If you removed the seal: It is generally recommended to replace it. High-pressure seals deform to fit the space; once removed, they rarely reseal perfectly.
• If the plunger is scratched: You must replace the plunger and the seal.
• When sliding the cylinder back over the plunger during reassembly, wet the plunger with a little water or a drop of alcohol. This lubricates the seal sliding over the plunger tip and prevents the seal from "rolling" or tearing on the initial installation.

These are the most common issues. Potential causes include:

• Hydraulic Oil: Check the hydraulic oil level. Low oil can cause the hydraulic pump to cavitate or lose pressure.
• Priming: Ensure the system is fully primed with liquid. Air trapped in the product cylinder ("air lock") will prevent the hydraulic piston from effectively compressing the sample.
• Check Valve Debris: A particle may be stuck in the inlet or outlet check valve, preventing it from closing. Flush the system or disassemble and clean the check valves.
• Worn Seals: The plunger seal or high-pressure seal may be worn and leaking.

• This indicates the Plunger Seal has failed. Stop the machine and replace the seal immediately. Continuing to run with a leaking plunger can score the piston, leading to expensive repairs.
• To replace the Plunger Seal watch this video - Nano DeBEE Maintenance - Changing the Plunger Seal

• Check the inlet filter for clogs.
• Ensure the product viscosity isn't too high for the current feed setup.

• Check that the cooling water is flowing through the heat exchanger.
• The Heat Exchanger may be scaled up (internally) or fouled.
• You may need to reduce the operating pressure (pressure is directly proportional to heat generation).

• This often indicates hydraulic pump cavitation. Check the oil level immediately.
• It could also indicate the intensifier piston hitting the end of its stroke too hard if the limit switches are misadjusted or if the product side is starved of feed (no resistance).

Determine where the leak is coming from, identifying weep holes drilled into the cylinder assembly.

• The weep holes serve two critical functions - Safety (preventing pressure build up behind seals) and diagnostics (acting as a visual indicator).
• Fluid leaking from the high-pressure cylinder may indicate a plunger seal failure. It is recommended to stop and inspect the plunger seal for damage.
• Please watch this video: Nano DeBEE: Maintenance - Managing Leaks

You should keep spares of the following:

• Plunger Seals: These prevent leakage around the high-pressure piston. Please watch this video on how to replace the Plunger Seal - Nano DeBEE Maintenance - Changing the Plunger Seal
• Check Valve (CV) Seals: O-rings that seal the inlet/outlet valves.
• Backup Rings: Used to support the O-rings under high pressure.