LAB
EXHAUSTER
Capacities
Up to 16,000 CFM
Up to 5.0” w.g. SP
Max Air Temp 200º F
Est. 1938
ACME ENGINEERING & MANUFACTURING CORP.
P.O. Box 978 • Muskogee, OK 74402 • 918/682-7791
Acme’s Model TIB-LE is a belt drive, centrifugal lab
exhauster with the motor, drives and bearings located
outside the airstream designed to exhaust potentially
dangerous laboratory fumes. The TIB-LE is constructed
to operate in a roof mounted vertical position with optional Bypass Air Dampers and Plenum
intended to dilute noxious fumes. The TIB-LE is also available with a high pressure wheel for
applications with higher static pressure requirements.
• Neoprene gasket for fan connection to curb
TIB Lab Exhauster Check-List
✓ High Plume Nozzle
and curb cab
• AMCA “B” Spark Resistant Construction
✓ UL 705 Electrical Listed
✓ TIB with UL762 Restaurant Grease Listed
Certication Pending
✓ AMCA Certication for Sound and Air Performance
Certication Pending
✓ Designed to meet ANSI Z9.5: Laboratory Ventilation
✓ Designed to meet NFPA 45: Standard on Fire
Protection for Laboratories Using Chemicals
✓ Designed to meet ASHRAE Laboratory Guidelines
✓ AMCA Type B Spark Resistant Construction
✓ Oversized Access Doors
✓ Optional Bypass Dampers and Plenum
Standard Construction Features
1. Cone
• Heavy duty, seam-welded steel construction
• Designed to meet ANSI Z9.5, NFPA 45, and
ASHRAE guidelines
2. Extension Housing
• Heavy duty, seam-welded steel construction
with rolled ange
• Designed to increase the overall lab
exhauster height to a minimum of 10 feet
3. TIB
a. Construction
• Heavy gauge, welded-steel construction
• Bolted, gasketed, oversized access door
for accessing the wheel, shaft and bearings
• Lifting lugs
• Drain hole connection
b. Wheel
• Aluminum, centrifugal wheel with backward
curved blades
• Non-overloading design for high efciency
and minimal sound
• The dynamically balanced impellers for our
products are balanced to the grade G6.3
as described in the standards:
• ANSI/AMCA 204 “Balance Quality and
Vibration Levels for Fans”
• ISO 14694 “Fans – Specications for
balance quality and vibration levels”
c. Drive Assembly
• Dual belt drives
• Cast iron drives sized for 150% of fan
horsepower
• Static-conducting, oil, and heat-resistant
belts
d. Motor (TEFC or EXP)
• Continuous duty motors with sealed ball
bearings
• Motors are located outside the airstream
e. Shaft
• Corrosion-resistant coated, steel shaft
(stainless steel - Optional)
• Sized so that rst critical speed is at least
25% over the max operating speed
f. Concentric Locking Bearings
• The shaft is centered in the bearings
• Rated at L10 life of 100,000 hours
• 2 year limited warranty
• With nylon extended lube lines
4. Motor/Drive Cover
• Heavy duty, steel construction
5. Curb Cap
• Heavy gauge, steel curb cap
6. Bypass Air Plenum - Optional
• Heavy gauge, welded-steel
construction
• Drain hole connection on the
bottom of the housing
• Connects directly to a roof curb
7. Access Doors
• Heavy gauge, steel construction
• One bolted, oversized access
door for side-intake servicing
• Two bolted, oversized access
doors for ease of damper
servicing
8. Plenum Weatherhood - Optional
• Heavy duty, steel construction
with galvanized steel birdscreen
• For mounting with the bypass
air damper
9. Bypass Air Damper - Optional
• Opposed blade
• Electrically actuated
10. Isolation Damper - Optional
• Gravity or control
• Parallel blade damper
Standard lab exhaust grade coating
• Provides a tough, durable surface
Reinforced Roof Curb
• Withstands 125 mph wind load without guy wires
Disconnect Device
• Factory wired with NEMA 3R Disconnect Switch
• Explosion Proof switch shipped separate when Explosion Proof motors are selected
Fasteners
• Stainless steel fasteners
Nameplate
• Permanently afxed manufacturer’s nameplate containing the tag information, model
number, serial number, CFM and static pressure (inches w.g.) for future identication
LAB EXHAUSTERS
Also Available Through SPR
QBMX-LE This mixed ow, in-line,
belt drive lab exhauster uses a mixed ow
fan. This type of design has higher
efciencies resulting in lower motor
horsepower requirements and lower
operating costs.
Laboratory Exhaust System Planning
“For laboratory fume hood exhausts, American Industrial Hygiene
Association (AIHA) Standard Z9.5 recommends a minimum stack
height of 10 ft above the adjacent roof line, an exhaust velocity Ve of
3000 fpm, and a stack height extending one stack diameter above
any architectural screen; National Fire Protection Association (NFPA)
Standard 45 species a minimum stack height of 10 ft to protect
rooftop workers.” ASHRAE 2011 Handbook.
To calculate the plume height such that it will circumvent building air
h
r
intakes and wind re-circulating zones use the following calculation
taken from the ASHRAE 2011 Handbook:
hr = 3 * b * de * (Ve / UH )
2100-LE This airfoil, in-line, belt
drive lab exhauster uses an in-line centrifugal
fan for commercial and industrial settings,
available in both class 1 and class 2. This type
of design meets higher pressures in a lab
exhaust conguration.
hr = plume rise
b = capping factor where 1.0 is used for uncapped roof exhaust
de = stack diameter ft (m)
Stack
Height
Ve = Stack exit velocity ft/min (m/s)
UH = wind speed, ft/min (m/s)
ASHRAE. 2011. “Building Air Intake and Exhaust Design.”
ASHRAE Handbook - HVAC Applications. pp. 45.1-45.10.
LIMITED WARRANTY Acme Engineering and Manufacturing Corporation extends
this limited warranty to the original purchaser and warrants that products described
herein shall be free from original defects in workmanship and materials for two
block bearings and shaft 5 years from shipment, belts one year from shipment,
and polyethylene tubing at 90 days from shipping), provided same have been
properly handled, stored, installed, serviced, maintained and operated. Refer to
Form MS149 for complete limited warranty terms and conditions. This form is
available to anyone at www.acmefan.com. The Company’s warranty is in lieu of all
other warranties, express or implied, arising by law or otherwise, including without
limitation the implied warranties of merchantability and tness for a particular
purpose, which are hereby expressly disclaimed claimed and waived.
Acme products are designed and manufactured to provide reliable performance
but they are not guaranteed to be 100% free of defects. Even reliable products will
experience occasional failures and this possibility
should be recognized by the Purchaser and End
User. If these products are used in a life support
ventilation system where failure could result in loss
or injury, the Purchaser and End User should provide
adequate back-up ventilation, supplementary natural
ventilation or failure alarm system, or acknowledge
willingness to accept the risk of such loss or injury.
WARNING DO NOT use in HAZARDOUS
ENVIRONMENTS where fan’s electrical system could provide ignition to
combustible or ammable materials unless unit is specically built for hazardous
environments. Comply with all local and national safety codes including the
National Electrical Code (NEC) and National Fire Protection Act (NFPA). Guards
must be installed when fan is within reach of personnel or within eight (8) feet (2.5
m) of working level or when deemed advisable for safety.
DISCLAIMER The Company has made a diligent effort to illustrate and describe
the products in this literature accurately; however, such illustrations and
descriptions are for the sole purpose of identication, and do not express or imply
a warranty that the products are merchantable, or t for a particular purpose.
INDEMNITY Purchaser acknowledges various warnings by the Company
regarding the products and its installation and use. If the Company incurs any
claims, lawsuits, settlements, or expenses (including attorney fees) for any loss,
injury, death or property damage including, but not limited to, claims arising out of
the Purchaser’s or any end user’s installation or use of the products, the Purchaser
shall indemnify and hold the Company harmless.
Est. 1938
January 2012 PM240A
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