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How to Assemble the Vertical Laminar Flow Hood

How to Assemble the Vertical Laminar Flow Hood

Our laminar flow hoods arrive flat-packed. This gives you the flexibility to set up your unit in either a vertical or a horizontal configuration, and switch between configurations if needed.

Setting up your vertical laminar flow hood involves six key steps:

  1. Assembling the Filter Panel
  2. Assembling the Frame
  3. Attaching the Filter Panel
  4. Fit the Screens
  5. Installing the HEPA filter
  6. Starting the Laminar Flow Hood
How to Assemble the Vertical Laminar Flow Hood

Assembling the Filter Panel


The filter panel consists of two main parts:

  • The baffle — containing the main electronics board and motor that control the laminar flow hood.
  • The plenum — a large hollow structure that will contain the HEPA filter. There is also a filter guard panel that attaches to the plenum.

Start by aligning the threaded studs on the baffle with the holes on the plenum. For the vertical laminar flow hood, arrange these as shown in the diagram below.

Once fitted, fix in place using the nuts provided.

For the vertical laminar flow hood, the baffle should rest on top of the long side of the plenum
Filter component orientation for the vertical laminar flow hood
Align the baffle with the plenum using the threaded studs, and secure in place using the nuts provided
Align the baffle with the plenum using threaded screws and fix in place

Assembling the Frame


To assemble the main body of the laminar flow hood, you will need:

  • 1 x steel tray
  • 2 x clear acrylic side panels
  • 1 x black back panel
  • 14 x M4 screws
  • 14 x M4 nuts
  • 12 x M4 washers
  • 2 x M4 locking washers

Align the steel tray with the acrylic side panels using the slots and holes in the tray and panels. Before securing, ensure the panels are correctly aligned.

The side panels should extend towards the back of the tray, allowing space for the back panel. The three smaller slots should face upwards to align with the filter panel at the top of the hood.

Once the tray and panels are positioned correctly, secure using the M4 screws, nuts and washers provided.

Align side panels with the tray ensuring correct panel orientation
Align the tray with the side panels
Fix tray and side panels into place using screws
Use screws, nuts, and washers to fix in place

Next, loosely fit M4 screws, bolts, and washers through the holes on the side of the back panel. Slot the back panel into place by lining up the screws with the slots in the acrylic side panels.

When the back panel is fitted, fix all the screws tightly to secure the frame.

Finally, secure the back panel to the metal tray using the final M4 screws, nuts and locking washers.

Slot back panel into side panels using the hole and slots provided
Slot back panel into side panels using the hole and slots provided
Fix back panel into place
Fix back panel into place

Attaching the Filter Panel


Loosely fix M4 screws, nuts, and washers along the lower side of the plenum. Push them out so that they are protruding. This will allow you to slot the filter panel onto the frame using the slots in the side panels.

You will need two people to carefully move the filter panel onto the frame. Once the plenum has been placed on the structure, fix it in place by tightening the fasteners.

Place the filter panel on top of the laminar flow hood, making sure to align with the slots on the side panel
Place the filter panel on top of the laminar flow hood
Fix filter panel to the side panels using the M4 screws, bots and washers provided.
Fix filter panel to the side panels

Fitting the Screens


Once the main structure is assembled, you can fix the protective screen and the display panel to the hood. Use the pilot holes in the plenum to position the screens.

Attach the display panel to the plenum using:

  • 2 x M4 6 mm screws
  • 2 x M4 domed nuts

Attach the protective acrylic screen using:

  • 4 x M4 6 mm screws
  • 4 x M4 locking washers (to reduce vibrations)
Fix the protective screen onto the front of your laminar flow hood
Fix the protection screen onto the front of the laminar flow hood, aligning with the pilot holes
Fix filter panel to the side panels using the M4 screws, bots and washers provided
Fix display screen to the front panel aligning with pilot holes

Installing the HEPA Filter


Slot the HEPA filter into the plenum, ensuring the correct filter orientation. The arrow on the filter should point downwards, in the direction of the air flow.

Slot the HEPA filter into the Laminar Flow Hood plenum, with the arrow pointing downwards.
Slot the HEPA filter into the plenum, ensuring correct orientation
Correct orientation of HEPA filter - arrow should point in the direction of the air flow i.e., downwards.
Correct orientation of a HEPA filter

Align the HEPA filter so that the gasket lies directly below the clamp screws. When this is position correctly, tighten the filter clamp screws into the plenum until the HEPA filter is secure.

Once the HEPA filter is secure, screw the filter access panel in place.

Screw the filter clamp screws into the plenum.
Screw the filter clamp screws into the plenum to fix the filter in place
Fix filter guard onto the plenum.
Fix filter guard onto the plenum

Laminar Flow Hood

Laminar Flow Hood

Starting the Laminar Flow Hood


The last step is to connect the control board to the display panel.

Use the supplied ethernet cable to connect the baffle to the display panel. This cable can be fed through one of the feedthrough holes in the back or side panels. You can use adhesive cable clips to keep the cable out of the way.

Use ethernet cable to connect the baffle to the display screen.
Use ethernet cable to connect the baffle to the display screen
Ethernet cable can be fed through the feedthrough holes in the back or side panels.
Ethernet cable can be fed through the feedthrough holes in the back or side panels
Plug it in and switch it on.
Plug it in and switch it on
The fully assembled Vertical Laminar Flow Hood
The assembled Ossila Vertical Laminar Flow Hood

Now, you can plug in your vertical laminar flow hood and switch it on.

Laminar flow hood in use

Before you use the hood, it is important to:

  • Clean your laminar flow hood thoroughly.
  • Turn on the fan and UV light for a period of time, to prepare the environment for use. It is advised to leave the system for at least 20 minutes before first use.

    Laminar Flow Hood

    Laminar Flow Hood

    Contributing Authors


    Written by

    Dr. Mary O'Kane

    Application Scientist

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