Acme Engineering UBG Installation Manual

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Industry Leadership

Founded in 1938, Acme Engineering and Manufacturing
Corporation is known worldwide as a leader in the
manufacture of fans, blowers, and ventilation equipment.
Acme’s growth over the past half century is a tribute to
superior quality, customer loyalty, and dedicated employees
and sales representatives.

Today, from its headquarters in Muskogee, Oklahoma, Acme
serves customers worldwide with high quality air movement
and control products.

Manufacturing

With approximately 350,000 square feet of manufacturing
space, Acme produces one of the broadest lines of air
moving equipment in the industry. State-of-the-art
manufacturing equipment and a well trained, experienced
workforce is the key to Acme’s timely delivery of
quality air moving products.

Research and Testing

The Acme Research and Development Center operates both
air and sound laboratories. The Center houses four wind
tunnels with a data acquisition system, a reverberant sound
room with the latest sound analyzer equipment, and a
structural laboratory for stress and vibration analysis.
Solid modeling, and finite element analysis support
product research and development. The Center also
houses a fully equipped prototype facility enabling Acme to
develop and introduce new products to the market in the
shortest time possible.

Sales & Service

A factory trained, knowledgeable sales organization
addresses the needs of many diverse and distinct
markets. Customers around the world are serviced by a
complete system of sales representatives, equipment
distributors and local dealers supported by nationwide
distribution centers and backed by a staff of sales and
marketing professionals.

Quality

A highly trained production staff sets the standard for
dependable, quality air moving products. By using the
latest computer techniques for research and design,
and rigorous quality control standards Acme can offer

one of the best warranty programs in the industry. Our
exclusive 2/5 year limited warranty provides our customers
with confidence…Year After Year.

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UBG CONSTRUCTION FEATURES

REMOVABLE WINDBAND

Constructed of heavy gauge
galvanized steel. Removable
panels for easy access to fan
and dampers. (Size 72
windband shipped knocked
down; requires field assembly.)

Model UBG low silhouette belt drive exhausters are
ideally suited for moving large volumes of air.
Capacities range from 3,770 to 83,370 CFM and up
to ¾ inch static pressure. The UBG is a high
velocity exhauster design to discharge air up and
away from the building. Typical applications
includes all types of commercial and industrial
facilities such as warehouses, foundries, mills and
manufacturing plants.

BUTTERFLY DAMPERS

Constructed of aluminum for
ease of opening at low
velocities. Dampers provide
weather protection and
prevents backdrafts when fan
is not in operation.

LIFTING EYES

For ease in lifting onto the
roof deck.

BASE

Constructed of heavy
gauge galvanized
steel for weather
resistance.

HEAVY DUTY ALUMINUM
PROPELLER

Heavily reinforced, highly
efficient, cambered airfoil
blades, welded to hub and
precision balanced on
corrosion resistant coated fan
shaft.

MOTORS

Heavy-duty type with
prelubricated ball bearings
requiring minimum
maintenance.

DRIVE ASSEMBLY

Designed for 150% of driven
horsepower. Sheaves are
machined cast iron. Belts are
static free and heat and oil
resistant. Shafts have corrosion
resistant coating.
Variable speed drives are
standard for 5 HP and smaller.
Fixed speed drives are
standard for 7 ½ and 10 HP.
Pulleys have split taper bushing.

BEARINGS

Permanently lubricated bearings are
used in duplex split pillow block housing.
Bearings are resiliently mounted in
neoprene rings, providing extra
protection and vibration isolation. The
bearing assembly is rated at an L-50 life
of 200,000 hours and features Acme’s 5 year
limited warranty.

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UBGMX CONSTRUCTION FEATURES

Motor Out of Airstream

The UBGMX offers all of the standard construction
features of the UBG in addition to the motor out of the
airstream for ease of servicing and inspection.
Removable motor cover allows quick and easy
access to the motor, belt and drives without removing
the fan.

High Temperature Options

UBGMX exhausters are available with special
features for emergency high temperature exhaust
and smoke removal applications. The table below
lists the specific options and the high temperature
features.

UF Option

500° F for 4 hours

•

1000° F for 15 minutes

•

Construction Features

Hi-Temperature Bearings ··
Copper Lubrication Lines ··
Dual Heat Resistant Belts ··
Heat Slinger ··
Steel Propeller ··
Motor Outside Airstream ··
Ventilated Belt and Bearing Enclosure ··
Fusible Link Damper Lifters ··

Fusible Link Damper Lifters Capable of
Lifting 10 lbs./sq. ft., meets UL793.

UL Listed “Power Ventilator for Smoke
Control Systems”

Note: Exhausters with UF and SE options are constructed to operate
in temperature and time limits stated. Some parts of the fan may be
destroyed when exposed to unusually high temperatures for prolonged
periods.

OptionUFOption

SE

·

·

SE Option

500° F for 4 hours

•

1000° F for 15 minutes

•

Meets UL793 requirements

•

UBGMX exhausters with UF and SE options are designed and constructed to remove high temperature exhaust and smoke.

These specially equipped ventilators meet IRI (Industrial Risk Insurers) requirements for exhausting 500° F air for 4 hours
and SBCCI’s “Standard Fire Prevention Code” requirements for exhausting 1000° F air for 15 minutes. The Butterfly

Damper on the SE option meets the requirements of UL 793 for automatically opening under snow or dust load in an
emergency situation.

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