Acme Engineering QBMX User 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.

Engineering

The Acme Research and Engineering 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 engineering and production staff set 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.

Mixed-Flow Fan

Model QBMX

Model QBMX fan is a belt drive, mixed-flow, inline exhauster
with the motor, drives and bearings located outside the
airstream. This design exceeds the efficiency of comparably
sized tubular centrifugal and vaneaxial fans, resulting in lower
motor horsepower requirements and lower operating costs.

CAPACITIES

up to 60,349 CFM

U.L. 705 Listed

up to 5" w.g. static pressure!

Construction Features

Housing

Heavy gauge, rolled steel construction and continuously

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welded to eliminate air leakage
Straightening vanes are welded to the housing to ensure

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maximum efficiency and strength
Standard coating is charcoal baked enamel

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Access Door

Bolted, over-sized access door with gasketing for servicing

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Mixed-Flow Wheel

Hybrid (centrifugal and axial) wheel

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Wheels are made of welded, high-strength steel

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Precision balanced for smooth, trouble-free operation

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Non-overloading design for high efficiency and minimal

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sound

DIMENSIONS

Fan

Model

QBMX16 28.37 25.16 30.00 21.32 14.01 12.58 21.97 23.66 10.65 8.00 0.63

QBMX18 32.65 27.75 36.00 25.31 14.94 13.88 24.56 26.19 11.58 8.00 0.63

QBMX20 33.99 30.13 37.00 26.94 15.79 15.07 26.92 28.57 12.43 8.00 0.63

QBMX22 39.16 33.13 39.00 30.50 16.85 16.57 29.95 31.57 13.50 16.00 0.63

QBMX24 42.43 36.19 42.00 32.35 21.40 18.10 32.97 34.75 15.52 16.00 0.63

QBMX27 44.89 39.56 44.00 68.57 22.60 19.78 36.34 38.00 16.72 16.00 0.63

QBMX30 52.50 43.56 46.00 42.85 24.02 21.78 40.38 42.00 18.13 16.00 0.63

QBMX33 55.57 47.69 51.00 45.47 25.45 23.85 44.41 46.13 19.57 16.00 0.63

QBMX37 59.62 53.44 54.00 50.62 27.33 26.72 49.13 51.69 21.42 16.00 0.75

QBMX40 65.60 58.56 57.00 55.66 32.01 29.28 54.26 56.81 24.58 16.00 0.75

QBMX45 72.16 65.25 63.00 62.10 24.07 32.63 59.98 63.00 26.64 24.00 0.75

QBMX49 79.23 71.44 66.00 69.10 26.25 35.72 66.05 69.19 28.83 24.00 0.75

ABCDEFGHJKL

Acme Engineering & Manufacturing Corporation certi
fies that the models shown herein are licensed to bear
the AMCA seal. The ratings shown are based on tests
and procedures performed in accordance with AMCA
Publication 211 and AMCA Publication 311 and comply
with the requirements of the AMCA Certified Ratings
Program.

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Inlet

Streamlined inlet optimally matched to the impeller

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Bearings

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Lubricated unitary pillow block bearings with extended lube
lines

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Rated at L10life of 40,000 hours

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2 year limited warranty on unitary pillow block bearings

Shaft

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Corrosion resistant, coated steel shaft

Motor

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Continuous duty motors with sealed ball bearings

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Motors are located outside the airstream

Vibration Isolation

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Motors are isolated for extended life and quiet operation

Drive Assembly

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Cast iron drives sized for 150% of fan horsepower

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Static-free, oil, and heat resistant belts

Nameplate

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Permanently affixed manufacturer’s nameplate containing
the model number, serial number, CFM and static pressure
(inches w.g.) for future identification

Page 3

Options/Accessories

Disconnect Switch

Nema 3R

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Factory wired and externally mounted (except

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explosion proof motors)

Inlet and Outlet Companion Flanges

Heavy gauge, coated galvanized steel

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Factory mounted

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Inlet and Outlet Screens

Factory mounted, heavy gauge galvanized steel

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Weather Cover

• Enclosed, removable motor and belt guard

• Factory mounted

Drain

• 1.5” Drain and drain plug

Isolators

Hanging Spring

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Hanging Rubber

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Floor Spring

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Floor Rubber

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Optional Wheel Material

Aluminum wheel

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Spark Resistant Construction

AMCA B

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Shaft Seal

Factory mounted

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Stainless Steel Tag

• 4” x 2” with model, order number, and tag
information

Optional Coatings

• Acrylic Epoxy

• Decorative Coatings

• Heresite

• Insulmastic

• Special Coatings

Smoke Exhaust Option Pending Certification

The QBMX-SE mixed-flow inline smoke exhauster will combine
superior energy efficiency with emergency smoke management
technology. Under severe temperatures, the QBMX-SE is designed
to exhaust life-threatening smoke to provide extra evacuation time.

These power ventilators are intended for installation in buildings in
accordance with requirements contained in the Recommended
Practice for Smoke Control System, NFPA 92A; and are intended to
be connected to and controlled by Listed Smoke Control System
Equipment (UUKL).

Page 4

QBMX-SE

Maximum Temperatures

500°F for 4 hours

1000°F for 15 minutes