Terra WhisperFlow RSR User manual

Explosion-Proof RSR Fan/Filter Unit
Quick-Start Operating Guide Doc . 1788-12
© Copyright 2015 Terra Universal Inc.
All rights reserved Revised November 2019
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: [phone] • FAX: [phone]
IMPORTANT SAFETY INSTRUCTIONS
READ AND SAVE THESE INSTRUCTIONS
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.
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.
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.
CAUTION
Cautions are used when failure
to observe instructions could
result in significant damage to
equipment.
WARNING
Warnings are used when failure
to observe instructions or
precautions could result in
injury or death.
The information presented here is subject to change without notice.
1.0 Introduction
This manual documents installation and operation of Terra Universal’s Room-Side
Replaceable (RSR) Explosion-Proof WhisperFlow™ Fan/Filter Unit (FFU). The FFU
provides uniform, laminar flow, HEPA-filtered air to the area below the mounted unit.
2.0 Operation
The unit consists of a ¼-HP, explosion-
proof motor driving a forward-curved
centrifugal blower. Air is drawn into the
unit through a pleated pre-filter and in
turn to an insulated chamber where it is
then directed to an exit HEPA filter with
a built-in diffuser.
The unit can also be equipped with a
3/8”-diameter challenge port, shown in
photo to the right. Take differential
pressure measurements to monitor filter performance, and insert aerosols for leak-test
certification. Port is capped when not in use.
3.0 Installation
The RSR WhisperFlow FFU is designed to allow filter replacement from the inside of the
cleanroom, without breaching the seal. A gel-sealed filter can be separated from the fan
module for replacement. The fan module stays in place on top of a standard 2’x4’ clean
room ceiling grid and includes a threaded fixture at each corner to accommodate four
eye-bolts (not provided) that can be used to assist in positioning the unit.
All metal components are grounded. A grounding wire is clipped to metal hardware on the
filter screen as well as the metal threads running through the pre-filter mesh. Make certain
that these wires are in place before final installation.
WARNING:
To reduce the risk of fire, electric shock, or injury to persons, do not
use this fan with any solid-state speed control device, and observe the
following:
A) Use this unit only in the manner intended by the manufacturer. If you have questions,
contact the manufacturer.
B) Before servicing or cleaning unit, or replacing a filter, switch power OFF at the
service panel and lock the service disconnecting means to prevent power from being
accidentally switched on. When the service disconnecting means cannot be locked,
securely fasten a prominent warning device, such as a tag, to the service panel.
C) When the removal/disconnection of either filter is required due to service or
component replacement, they are to be remounted as previously installed.
D) Installation work and electrical wiring must be done by qualified person(s) in
accordance with all applicable codes and standards, including fire-rated construction.
All metal components must be properly grounded.
E) When cutting or drilling into a wall or ceiling, do not damage electrical wiring and
other hidden utilities.
4.0 Start up
WARNING:
Keep unit disconnected from power supply during inspection
Prior to providing power to the unit, check that no damage has occurred during shipping.
This can be accomplished via a visual check to make sure there are no visible dents or
penetrations. If the unit is intact, unclip the grounding wire and remove the pre-filter.
Manually rotate the fan wheel to make sure it is not in contact with any stationary parts
and that there are no visible loose screws or bolts obstructing the wheel’s rotation. Once
visual inspection is completed, have a professional perform the installation who is familiar
with Class I, Groups C & D and Class II, Groups F & G hazardous location requirements.
NOTE: Remember to replace the filter-screen and pre-filter grounding wires. After
installation, with power applied, the fan will rotate, and filtered air will exit the HEPA filter.
5.0 Cleaning and Maintenance
WARNING:
Disconnect from power supply before servicing unit or replacing
filters. When servicing or replacing either filter, the new filter is to be
installed in the same manner as the filter it replaces.
The scheduled maintenance of the unit depends on the installed location and consists of
cleaning or changing the pre-filter and the HEPA 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 laminar flow rate falls below 70 feet/min.
Explosion-proof FFU to be installed with wiring embedded in filled rigid conduit.
5.1 Replacing the RSR Filters
The RSR filter is designed so that the HEPA or ULPA filter can be replaced from inside
the cleanroom without breaching the controlled environment. The filter assembly is
detached from the fan module, which stays in place in the ceiling grid. Follow these
instructions to replace the filter.
First, you must remove the outer screen covering the filter that is held in place with friction
catches (Photo 1). This screen protects the filter from damage and enhances airflow
uniformity. While gently pulling on the screen to disengage the catches, detach the
grounding wire clip as shown in Photo 2. The clip is attached to a steel rivet holding one
of the catches in place.
Photo 1: Friction catches hold the screen to the fan module housing.
Pre-Filter
Lid
Assembly
HEPA/ULPA
Filter
Grounding
Wire
Optional
Challenge
Port

Explosion-Proof RSR Fan/Filter Unit
Quick-Start Operating Guide Doc . 1788-12
© Copyright 2015 Terra Universal Inc.
All rights reserved Revised November 2019
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: [phone] • FAX: [phone]
Photo 2: Remove grounding clip from the steel rivet post on the back side of the outer
filter screen.
Next, remove the anodized aluminum face grille by rotating the metal tabs that help hold
the grille in place and provide grounding (see Photo 3). The tabs fit tightly and will scrap
across the anodized layer, exposing the metal beneath; this is critical for successful
grounding as the anodized layer is non-conductive.
Photo 3: Filter-face grille’s metal tabs.
Gently let the used filter drop down, and set aside. The filter assembly is surrounded by
a channel containing gel seal. Wipe any residual gel from the knife-edge of the fan
module still in the ceiling to prepare for the replacement filter. Position your new filter
carefully before pushing into place; the knife-edge of the fan module should be centered
in the channel (equal amounts of gel on both sides). Photo 4 shows the gel-filled
channel of the RSR filter.
Photo 4: Gel-filled channel of RSR filter.
Replace the face grille and rotate the metal tabs so that they cover the frame. Check to
be sure that the tabs are in direct contact with areas of the frame where the anodized
layer has been scraped off. This is important for grounding. Reattach the grounding clip
to the rivet on the outer screen, and then re-engage the friction catches.
To replace or clean the pre-filter located at the top of the fan module, qualified personnel
will need access to the ceiling grid. Un-clip the grounding wire and slide the filter out of
the two tracks holding it in place. When finished, put the filter back in place and make
certain that the grounding wire is clipped to metal threads running through the filter mesh.
Photo 5: Clipping the grounding wire to metal threads in the pre-filter.
6.0 Specifications
Dimensions: 23.625"W x 47.625"L x 20.2"H (600 mm x 1210 mm x 513 mm)
Housing: Stainless steel
HEPA Filter: 99.99% efficient on removal of particles 0.3 microns and larger
Pre-Filter: 20" x 20" x 1" - 30% efficient ASHRAE rated
Blower: Forward-curved centrifugal type factory balanced. Entire motor/blower
assembly is removable from top of housing for service
Motor: 1/4 HP Direct drive, Explosion-proof, 1 Phase
Electrical: Motor wiring should only be connected to an appropriate control unit. All
wiring should be housed by UL-listed rigid conduit
Power Cord: None supplied
Face Grille: Perforated anodized aluminum
Noise Level: 50 dBA (measured at 30" from filter face)
Weight: 76 lbs. (35.5 kg) shipping weight
Support: Threaded screw receptacles provided for insertion of optional eyebolts
Power Options: ¼ HP motor with voltage of 115/1/60Hz, 208-230/1/60Hz
Power Specifications: for 2 ft. x 4 ft. HEPA, 115VAC (Model No. 6601-24HE)
Full Load Amps 6.8
Watts 190
Specification Notes:
• All FFU data is based on a standalone unit using 1” prefilter and clean filters.
• Data will vary depending on filter media and configurations with other
products/systems, such as ductwork or hoods.
7.0 Warranty
See last section.

Quick-Start Operating Guide
High- Filter/Fan Unit
© Copyright 2015 Terra Universal Inc. All rights reserved • Revised November 2019 • Document 1788-12
Terra Universal, Inc. • TerraUniversal.com • 800 S. Raymond Ave. • Fullerton, CA 92831 • TEL: [phone] • FAX: [phone]
Limited 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
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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
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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
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customer’s expense. See Terra’s “Policy and Procedure for Returned Goods.”
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