Terra Universal RSR ECM User manual

RSR ECM Fan/Filter Unit
Installation and Operation Manual Doc. 1788-25
© Copyright 2018 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 the operational guidelines for Terra Universal’s Smart
WhisperFlow™ RSR (Room-Side Replaceable) EC (Electronically Commutated)
Motor Fan/Filter Unit.
The Smart WhisperFlow™ ECM FFU provides uniform, laminar flow HEPA-filtered air to
the area below the mounted unit. This unit incorporates Whisperflow™ advanced
baffling technology to reduce noise and ensure uniform airflow.
The Smart WhisperFlow™ ECM Fan/Filter Unit uses an integrated control module
referred to in this manual as the EC Motor Control Card. The Control Card features can
be accessed at the EC Motor Control panel located on the motor housing, above the
HEPA filter housing.
1.1 Fan/Filter Unit Specifications
FFU Specifications
Size Options
2’x4’, 2’x3’, 2’x2’
Housing
White powder-coated cold-rolled steel or 304 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
Impeller
Forward-curved centrifugal type factory balanced. Entire
motor/blower assembly is removable from top of housing for service
Face Grille
304 stainless steel
Velocity
90 FPM or higher
Noise Level
50 dBA (measured at 30” from filter face)
Weight
76 lbs., 58 lbs., 49 lbs.
Power Options
1/3 HP motor; 120V/1/60Hz, 4.2 Amps
220V/1/60Hz or 240V/1/50Hz, 2.7 Amps
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.
2.0 Operation
The unit consists of a 1/3-HP electronically commutative motor driving a forward-curved
centrifugal impeller. 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, which can be used to
take differential pressure measurements to monitor filter performance or insert aerosols
for leak-test certification. Port is capped when not in use.
3.0 Installation
The Fan/Filter Unit is designed to fit on top of a Terra standard 2’ x 4’ clean room ceiling
grid. It includes a threaded fixture at each corner to accommodate four eye-bolts (not
provided) that can be used to assist in positioning the unit.
WARNING: To reduce the risk of fire, electric shock, or injury to persons,
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, the replacements 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 Initial 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, remove the pre-filter and fan guard screen.
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.
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 air velocity falls below 70 feet/min.

RSR ECM Fan/Filter Unit
Installation and Operation Manual Doc. 1788-25
© Copyright 2018 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]
Replacing the Filters
The Room-Side Replaceable FFU 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 separate from the fan module, which stays in place in the ceiling grid.
Follow these instructions to replace the filter.
A) First, you must remove the stainless steel 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.
Photo 1: Friction catches hold the screen to the fan module housing.
B) Next, rotate the metal tabs that help hold the HEPA filter in place (see Photo 3).
Photo 3: Filter-face grille’s metal tabs.
C) 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.
D) Rotate the metal tabs so that they lock in the new HEPA filter.
E) Reinstall the stainless steel screen by pushing up on the friction catches until the
screen clicks into place.
F) To replace the pre-filter located at the top of the fan module, slide the old filter out
of the two tracks holding it in place on top of the FFU and then slide in the new
pre-filter.

RSR ECM Fan/Filter Unit
Installation and Operation Manual Doc. 1788-25
© Copyright 2018 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]
6.0 EC Motor Control Card Set-up
6.1 Overview
The EC Motor Control Card is a variable-speed controller designed for brushless DC
(BLDC), electrically-commutated (EC) motors. The control card features industry
standard MODBUS® networking, precision speed control (1-100%), and closed-loop
control capability that supports a variety of sensors such as air pressure, air flow, and
particle counts.The EC Motor Control panel provides access to LED diagnostics,
manual speed adjustment, test probe jacks, CAT5e ports, the Control Mode DIP Switch,
and the MODBUS® Address DIP Switch Bank.
EC Motor Control Card
•Operating Temperature: 0 – 40°C
•Open-frame PCB with standoffs; Panel-mounted
•12-24V DC Power Supply (or network power)
•Two non-directional CAT5e/RJ45 connections for networking
•Motor Tachometer RPM Control
Analog Control Options
•5-10V from controlled voltage source
•4-20mA signal from a sensor or potentiometer
•Internal Closed-Loop Control
•Manual Speed Adjustment
PWM Speed Command Signal
•10V, 80Hz
TACH Motor Speed Input
•10V @ 1mA needed switched to ground
•Maximum 5000 RPM measured
•Minimum 60 RPM measured
Industry Standard MODBUS® Networking
•RTU Protocol
•RS485 9600,8,n,1
6.2 Control Modes
The EC Motor Control Card offers three different control modes for operating the FFU:
MODBUS® RTU networking, 0-10 VDC analog control, or manual control through an
onboard potentiometer.
Manual Control Mode:
The onboard potentiometer can be manually adjusted at the EC Motor Control Panel
using a Philips-head screwdriver. Clockwise rotation increases the motor output, and
counterclockwise rotation decreases the motor output.
Analog Control Mode:
Two terminals located on the EC Motor Control Card are designed to receive either a 0-
10 VDC demand signal or 4-20mA sensor signal to regulate the motor output.
Network Control Mode:
Each EC Motor Control Card in a MODBUS® network must be assigned a unique
address set in binary format using the eight DIP switches in the Address DIP Switch
Bank.
Control Mode DIP Switch Configurations
Manual Control Mode
DIP Switch Bank S1:
SWITCH #1 OFF
SWITCH #2 OFF
Analog Control Mode
DIP Switch Bank S1:
SWITCH #1 ON
SWITCH #2 OFF
Network Control Mode
DIP Switch Bank S1:
SWITCH #1 OFF
SWITCH #2 ON
Closed-Loop Feedback
Network Control Mode
DIP Switch Bank S1:
SWITCH #1 ON
SWITCH #2 ON
Example Addresses in Network Mode
MODBUS® Address Value = 1
DIP Switch Bank S2:
SWITCH #1 ON
MODBUS® Address Value = 21
DIP Switch Bank S2:
SWITCHES #1,3,5 ON
NOTE: Address zero should not be used as it is reserved for global commands.
NOTE: The EC Motor Control Card must be power-cycled for any address changes to
take effect.

RSR ECM Fan/Filter Unit
Installation and Operation Manual Doc. 1788-25
© Copyright 2018 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]
7.0 Test Probe Terminals
The test probe terminals are provided on the EC Motor Control Card to measure the
motor RPM or check for a PWM signal using a multimeter.
Manual or Analog Control Modes:
To measure RPM, set the Address DIP Switches at a value greater than 1. The test
probe jacks will output 0-2000 mVDC to represent motor RPM.
Example: 500 mVDC = 500 RPM
To measure demand signal, change the Address DIP Switches to the value of 0.
NOTE: Changing the address will not interrupt power to the Control Card.
Network Control Mode:
In the MODBUS® network control mode, the test probe terminals will always output
0-2000 mVDC to represent motor RPM.
8.0 120V vs. 220V Configuration
120V Configuration
1. Black and Red wires are connected to the lower terminal.
2. Yellow Jumper Cable is installed.
220V Configuration
1. Black and Red wires connect to the upper terminal as shown.
2. Yellow Jumper Cable is removed.
9.0 Control Card Electrical Specifications
Electrical Ratings
Input Voltage, AC, 50/60Hz
12 – 28V1AC
Input Voltage, DC
14 – 30V DC
Operating Current, AC
35 mA AC
Operating Current, DC
30 mA DC
Accessory Current 5V, 10V
503mA DC
Accessory Current V.RFU2
1003mA DC
1 Refers to actual AC voltage values
2 V.RFU is rectified and capacitive-filtered, but is unregulated
3
Maximum current values stated in support of a single connected load
“Stand Alone Operation” Power Source Ratings
Supply Transformer Voltage Rating,
12 – 24V AC
Supply Transformer Power Rating
2 VA
Regulated DC Supply Voltage Rating
14 – 30V DC
Regulated DC Supply Power Rating
2 W
Extended Accessory Output Currents for Stated Input Voltage Condition
Input Voltage Accessory Current, DC mA2
Suggested
AC/DC Source
Power Rating
5V
10V
V.RFU
VA
14V DC Regulated
300
300
500
20,20,30
30V DC Regulated
50
50
500
10,10,60
12V AC1Transformer
100
100
100
5,5,5
28V AC1Transformer
50
50
200
10,10,25
1AC voltage spec refers to actual AC voltage values, i.e., not transformer ratings, etc.
2
Current values stated in support of a single connected load.
10.0 EC Motor Specifications
Specifications
Horsepower
1/3 HP
Voltage
120/240V, 50/60Hz
Speeds
300 – 1250 RPM
Inputs
2 Way Serial Communication & PWM
Frame
NEMA® 48
Enclosure
Continuous Air Over
Mounting
Belly Band
Amperage
4.2/2.7 Amps

RSR ECM Fan/Filter Unit
Installation and Operation Manual Doc. 1788-25
© Copyright 2018 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]
11.0 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
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.”
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