Terra Universal WhisperFlow User manual

WhisperFlow™ Document No. 1800-71
Benchtop Laminar Flow Hood
© Copyright 2017 Terra Universal Inc. All rights reserved. • Revised September 2017
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: [phone] • FAX: [phone]

WhisperFlow™
Benchtop Laminar Flow Hood
© Copyright 2017 Terra Universal Inc. All rights reserved • Revised Sept. 2017 • Document No. 1800-71
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: [phone] • FAX: [phone]
1.0 Introduction
This manual provides information on installing and operating your Terra
WhisperFlow™ Benchtop Laminar Flow Hood.
Be sure to also read the manuals for any additional equipment you have
incorporated into your system, such as Terra's ionizing equipment.
2.0 Description
Terra Universal’s WhisperFlow™ Benchtop Laminar Flow Hood removes
particulate airborne contamination to ensure a clean work surface.
The backbone of the system is a fan/filter unit that forces air through a
HEPA filter. In conjunction with the system’s pre-filters, the HEPA filter
removes 99.99% of all particles 0.3 microns and larger from a large
volume air stream, and the vertical laminar flow of air to the work surface
effectively blocks the inrush of contaminants. Each 2' x 4' fan filter unit
provides 650 CFM of filtered air @ 90 FPM. For more stringent
requirements, ULPA-filtered units are available that remove all particles
down to 0.12 microns with 99.999% efficiency.
The system also features LED lighting that is completely non-
contaminating and imposes no clearance requirements.
Proprietary Notice
This manual pertains to proprietary devices manufactured by Terra
Universal, Inc. Neither this document nor any portion of it may be
reproduced in any way without prior written permission from Terra
Universal.
Terra Universal makes no warranties applying to information contained
in this manual or its suitability for any implied or inferred purpose.
Terra Universal shall not be held liable for any errors this manual
contains or for any damages that result from its use.
Safety Notice
A thorough familiarity with all operating guidelines is essential to safe
operation of the product. Failure to observe safety precautions could
result in poor performance, damage to the system or other property, or
serious bodily injury or death.
The following symbols are intended to call your attention to two levels
of hazard involved in operation:
Cautions are used when failure to observe instructions
could result in significant damage to equipment.
CAUTION
Warnings are used when failure to observe instructions
or precautions could result in injury or death.
WARNING
The information presented here is subject to change without notice.

WhisperFlow™
Benchtop Laminar Flow Hood
© Copyright 2017 Terra Universal Inc. All rights reserved • Revised Sept. 2017 • Document No. 1800-71
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: [phone] • FAX: [phone]
3.0 Installation
All of Terra’s Benchtop Laminar Flow Hoods are shipped fully assembled.
1. Uncrate the Benchtop Laminar Flow Hood, checking for any visible damage incurred during shipment. If
damage is found, immediately contact the freight company to file a claim.
2. Place the hood on a sturdy benchtop capable of supporting the combined weight of the hood and FFU(s) (refer
to the original order for product specifications or contact a Terra representative).
3. Inspect the included power strip (sits on top of the FFU) to make sure that all cables are still firmly connected.
4. Connect the power strip to a grounded 115VAC/60Hz or 230VAC/50Hz receptacle
5. Turn on the switch on the power strip to begin operating the hood.
4.0 Maintenance
Cleaning the Laminar Flow Hood:
The surfaces of the WhisperFlow™ Benchtop Laminar Flow Hood should be periodically cleaned to ensure that
sensitive materials are not exposed to contaminants that may accumulate over time. Use only lukewarm water, a mild
detergent, and a clean, non-contaminating cloth. Allow surfaces to dry adequately before using them.
Special Care of Static-Dissipative Plating:
If your work station includes static-dissipative side panels, you should take extra care when cleaning them to avoid
damaging their static-dissipative properties:
1. Do not use alcohol or other strong cleaning agents on acrylic materials.
2. Do not expose static-dissipative materials to extreme heat or direct sunlight.
3. Avoid scratching this material.
Replacing the HEPA (or ULPA) Filter:
It is recommended that the pre-filter be inspected and
cleaned every three months or sooner depending on the
cleanliness of the external environment. The HEPA filter
cannot be cleaned and must be replaced when the air
velocity falls below 70 feet/min.
Changing the HEPA filter requires removal of the unit from
the hood. Place the unit on a flat work surface and remove
the 10 sheet metal screws that hold the HEPA filter to the
case. Replace the filter with a new one and secure it to the
case with the same screws before placing it back onto the
ceiling grid.

WhisperFlow™
Benchtop Laminar Flow Hood
© Copyright 2017 Terra Universal Inc. All rights reserved • Revised Sept. 2017 • Document No. 1800-71
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: [phone] • FAX: [phone]
5.0 Specifications
Benchtop Laminar Flow Hood Specifications
Construction:
304 stainless steel frame
Hood Panels
Polycarbonate, Static-Dissipative PVC or Stainless steel
Lighting
LED lighting; does not disturb the air flow
Performance
Meets or exceeds the requirements/specifications of the following industry
standards:
ISO Class 4 (Class "100" (M 3.5)) air per the latest I.E.S.T. 14664-1 (Airborne
Particulate Cleanliness Classes)
I.E.S.T. Recommended Practices (Laminar Flow Clean Air Devices)
Fan/Filter Unit Specifications
Airflow Velocity
90 (±10) FPM (.45 m/s), when measured using a Velgrid (eight readings) 6 in.
(152mm) below the filter face
Sound Level
Approximately 50 dBA on low speed measure at 30 in. from the filter face, with the
fan delivering an average air flow velocity of 90 FPM (.45 m/s)
Ambient sound level less than 35 dBA
Vibration Level
Will not exceed .09 MILS RMS
Housing
Both the fan plenum and filter housing have a mill finish (powder coat paint or
stainless steel exterior optional), and sealed airtight
Prefilter
Furnished with a 19.5 in. x 19.5 in. x 0.875 in. polyurethane foam prefilter
HEPA Filter
Factory tested and rated 99.99% efficient in removal of particles 0.3 micron and
larger; leak free in accordance with the latest I.E.S.T. Recommended Practices
Filter Media
Microglass fiber with hot melt separators, sealed to the aluminum housing
Filter Face Guard
Epoxy powder coated expanded steel
Fan/Motor
Depends on the type of FFU; refer to the appropriate FFU operating manual
Power Requirements
Depends on the type of FFU; refer to the appropriate FFU operating manual
Static-Dissipative PVC Side Panels and Front Shield
Static-dissipative PVC features resistance between 106 and 108 ohms/square—much less than that of other treated
plastics. Tests show that when 10KV is applied to the surface, electrostatic potential remains less than 15V, and static
decay time is less than 1 second. And because this plating offers such effective static dissipation, it will not attract
dust or other contaminating particles that could damage sensitive microelectronic components.
HEPA Filters
The filtration medium consists of highly efficient microfiberglass paper folded over corrugated separators of aluminum
which prevent the media from nesting. This design channels air flow with optimal efficiency to reduce resistance.
All filters are tested for air flow resistance and DOP (dioctylphthalate) smoke penetration (with a mean particle
diameter of 0.3 microns) by measuring upstream and downstream smoke concentrations with a photometer.

WhisperFlow™
Benchtop Laminar Flow Hood
© Copyright 2017 Terra Universal Inc. All rights reserved • Revised Sept. 2017 • Document No. 1800-71
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: [phone] • FAX: [phone]
6.0 Warranty
Products Manufactured by Terra: Terra Universal, Inc., warrants products that it manufactures to be free from
defects for a period of 12 months for parts and 90 days for labor, commencing from the date of shipment. Terra’s sole
responsibility is to repair or replace, at its option, any part of the product that proves defective or malfunctioning
during this time limit. In some cases, components incorporated in Terra Universal products are covered by additional
warranties from component manufacturers; obtain specific information from Terra sales representatives. This
warranty is void if the equipment is abused or modified by the customer, is operated outside Terra’s operating
instructions or specifications, or is used in any application other than that for which it is specified. This warranty does
not include routine maintenance or service procedures, breakage of quartz baths after 60 days, shipping damage, nor
damage from misuse, intentional or unintentional abuse, neglect, natural disasters, or acts of God.
Products Manufactured by Others: Terra Universal, Inc., warrants that, to the best of its ability, Terra’s
representations of products that are manufactured by others reflect the manufacturer’s representations, subject to
change without notice. Sole warranty for these products is the original manufacturer’s warranty that is passed forward
to the purchaser and constitutes the customer’s sole remedy for these products. Detailed warranties for distributed
products are available through Terra sales representatives.
Freight Shortage or Damage: Upon receipt of any equipment from Terra Universal, Inc., customer shall immediately
unpack and inspect for damage or shortage. The customer shall not accept a damaged package or a short shipment
until the carrier makes a "damage or shortage" notation on both the carrier's and customer's copy of the freight bill or
delivery receipt. Service title passes when the shipment is loaded, so customer is responsible for filing and collecting
a freight claim. Any replacement products must be ordered and paid for separately. For Terra's "Policy and
Procedures for Returning Goods," see Terra's Internet site: www.TerraUniversal.com.
Generally, customers can improve the chance of collecting on a freight claim by following these procedures: 1)
formally requesting that the carrier inspect the shipment immediately upon suspecting damage or shortage to verify
condition; 2) notifying the carrier upon discovery of concealed damage and requesting an inspection within 15 days of
receipt, both in person or phone and following up via mail; 3) keeping the shipment as intact as possible, including
retaining original packaging materials and keeping the product as close to the original receiving location as possible;
4) holding salvage for disposition by the carrier.
All Claims: Terra Universal expressly disclaims all other warranties, expressed or implied or implied by statute,
including the warranties of merchantability or fitness for intended use. Terra Universal is not responsible for
consequential or incidental damages arising out of the purchase or use of the products supplied by Terra Universal.
Terra Universal is not liable for damage to facilities, other equipment, products, property or personnel of others, or of
their agents, suppliers, or affiliated parties, which is caused or alleged to have been caused by products supplied by
Terra Universal. In any event or series of events, Terra Universal’s total liability for any and all damages whatsoever
is limited to the lesser of the actual damages or the original invoice cost of the items alleged to have caused the
damage. The customer’s sole and exclusive remedy for any cause of action whatsoever is repair or replacement of
the non-conforming products or refund of the actual purchase price, at the sole option of Terra Universal. All claims
must be made in writing within 90 days of the date the product was shipped. Any claims not made within this time limit
shall be deemed waived by the customer. Terra Universal is not responsible for any additional costs of repair caused
by poor packaging or in-shipment damage during return.
Warranty Returns: All warranty returns must be authorized in advance by Terra Universal and approved under an
RMA. Unless approved in advance for good reason, all returns must be in original condition, including all manuals,
and must be packaged in original packaging materials. All returned goods are to be shipped to Terra Universal, freight
prepaid at customer’s expense. See Terra’s “Policy and Procedure for Returned Goods.”
Thank you for ordering from
Terra Universal!