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SECUFLOW – ULTRA LOW AIRFLOW FUMEHOODS

Fume hoods with airflow rates as low as 33

feet/minute (fpm), running in Europe’s top

Pharmas and Research Centers.

40 fpm ASHRAE tested by

a third party.

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FUMEHOODS

Waldner has one of the largest range of Fumehoods and Airflow Technology in the world. All of

which are certified under EN and ASHRAE standards.

Cable Pass-

through:

Safety +

Functionality

Side

Windows:

Safety +

Ergonomics

Possibility of Fitting

in Safety

Underbenches with

an Independent

Ventilation Duct

from the Fumehood

Itself:

Safety Maximum

Space Utility

per Linear

Foot:

Functionality +

R.O.I.

Full and

Complete

Working

Area Vision:

Safety +

Ergonomics

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Double Side Walls Single Side Walls

Panels with complete

electrical and

mechanical

interfaces are

especially sloped

towards the user,

easing the vision of all

services:

ergonomics + safety

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Waldner reccomends the use of our own designed and developed Airflow Technology: AC3

Airflow Controllers, although we are capable of integrating other airflow controllers from the

market. Our Airflow Controllers have been used for thousands of customers all over the world in

the last 25 years. The majority have been installed in Europe where we have a large market

share, with a well known and tested system used by some of the most reputable

Pharmaceutical Companies that are based in both Europe and the US.

Another interesting feature is the automatic sash opening/closing system. With a very slight

touch, the user can easily manipulate the whole sash, thanks to a motorized sash system. This

system will permit the user to move the sash even if they are carrying something in both of their

hands.

Our vertial sash also has horizontal sash sections, so that the user can open just the right space

to insert their arm in the fumehood, keeping their body protected with the rest of the sash.

Installing the services along the

whole length of the fume hood

allows a more convenient

positioning of the handles

according to the user’s

preferences. The outlets are

located closer to the point of

use, rather than on the sides of

the fume hood. This results in an

easier cleaning scenario and a

less risky way of handling

elements inside the fume hood.

Example of the user

working with the sash

closed in the vertical

position, but

opening a section of

the horizontal sash.

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The sash design, involving counterweights and a toothed cable system, allow a very soft and

smooth manipulation of the sash. A feature that all of our customers appreciate from Waldner

Fumehoods.

Whenever a sash stopper must be used, Waldner has designed a simple integrated system to

overpass the standard sash opening height. The user must consciously press two latches

together with one hand in order to set the sash stopper.

Waldner has developed a Sash Controlling device, so a zone presence system can detect if there

is no user working in front of the fumehood. The motorized sash then closes automatically, enclosing

the equipment inside and eliminating the potential for any accidents, thus increasing the safety of

the lab. Moreover, since the sash closes down, the controlling valve will also adapt the airflow to

One hand sash manipulation

Whenever the sash goes over the

stopper, an alarm will go off,

indicating to the user that the

conditions may not be safe.

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the minimum necessary, obtaining energy savings as well as ergonomics aspects since the noise

level will also be minimized.

Since it is possible that the user might leave some parts of the equipment sticking out beyond the

fume hood sash, Waldner includes a horizontal photoelectric barrier.This Sash Detector will detect

any element in the way of the vertical movement of the sash, stopping a few inches above, and

thus, avoiding any possible incidents.

The touch controlling panel on one side of the fumehood is totally

integrated in the profile, very easy to clean, and with all necessary

functions a user may need. Waldner believes that the users should not

have to read difficult operating manuals to work in a fumehood.

Therefore, the controlling panel has been designed to offer the relevant

safety information with a color coding system in coordination with a

sound pattern, depending on the type of incident that is occurring.

Drip cups are

integrated into the

back panel, so they do

not interfere with the

working space, nor the

airflows. Each drip cup

allow up to 5 different

outlets

Sockets can be located

inside at the back

panel with controlling

switches on the outside

panels

Outside Dimensions: 4 feet 11

inches (1500 mm)

Useful Dim: 4 ft 9 “ (1450 mm)

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All of our fumehoods can be delivered pre-assembled from the factory in two different parts

(bottom + top). This is a clear advantage of setting up on site, installing the bottom part first with all

the integrated services, so that the different specialists can install all of the services with barely any

barriers. This not only increases the quickness of the fitting, but also the quality of the whole

installation itself. All leakage tests can be performed quickly and any potential problems will be

solved immedietaly.

Since both parts of the fumehood can be delivered pre-assembled, after the bottom part has

been installed and connected, the fitters will then place the superstructure on top. This can be

done in less than 10 minutes!

This photo shows the

bottom parts already

installed and ready to

support the top parts.

Underbench Ventilation

Ductwork

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This same sequence can be reversed in the future, in case a change in the layout of the lab must

be done. Again, this saves on operating costs, as the timing will be minimized to less than half-an-

hour.

SECUFLOW TECHNOLOGY

Supplying air in a certain and controlled manner reduces the turbulences generated by friction on

the sides of the fume hood and on the worktop, achieving a smooth flow pattern of the air that

gently increases the air containment of the fumehood. Waldner is a leading manufacturer in this

technology that has been changing the design of labs for more than 10 years.

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It is important to add that the Secuflow technology can run at 40/60/80/100 fpm. It is a matter of

our customers preference to determine the right relationship that they may feel more comfortable

to work with. At any speed, Secuflow will have no competitor regarding user safety!

We strongly believe that managing the air correctly, with airflow tests passed both at the factory

and on site, gives us the edge in the present and in the future way of designing labs. Not simply

compromising on the safety of the users, but increasing it.

SECUFLOW, an auxiliary air system that enhances the performance of the fumehood containment,

allowing a more efficient way of using energy in terms of air.

Secuflow-Types 40 fpm (ULTRA LOW AIRFLOW)

Fumehood without Secuflow Fumehood with Secuflow on

Fumehood with secuflow after a few seconds, fully working

- The effect of the Secuflow is to push back all the vapors as soon as they are produced. This

creates an air barrier about 6” inside of the working area of the fume hood. This air barrier is

typically created when the outside airflow of the Secuflow hits the inside air trying to come out

of the fumehood. Since the barrier is pushed back, the containment increases drastically, not

being affected by backdrafts generated in the lab by people passing by or inefficient supply

air systems.

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- All this technology has been certified and tested not only at the factory but also on site. For

more than 10 years now in many top class labs around the world with very demanding

customers from a health and safety perspective.

- Secuflow used along a VAV system takes labs to the greatest levels in safety and energy

performance that have ever been seen.

Zone Presence Sensor

So the Lab can achieve the most efficient degree of performance, a sash controller device must

be included in the fumehoods. This sash controller, or Zone Presence Sensor, will maintain that the

sash is closed as long as no user is working at the fumehood. This means that this simple device will

allow one to technically design the ventilation plant in a very efficient way, increasing the

simultaneity factor, converting the lab to an “on demand” type of system, using just the right

amount of energy at any particular point in time.

As explained before, this solution comes along with a horizontal photoelectric barrier to stop the

closing of the sash in case there is any element sticking out of the face of the sash.

The sash controller adds an extra safety feature, since maintaining that the sash is closed most of the

time means that, in case of an accident, the explosion or whatever it may happen inside will stay

contained, protecting the users in the lab.

Zone Sensor

Photoelectric Barrier

800.635.6646

INFO@LONGOINC.COM

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