®
Installation, Operation and Maintenance Manual
Please read and save these instructions for future reference. Read carefully before attempting to assemble,
install, operate or maintain the product described. Protect yourself and others by observing all safety
information. Failure to comply with instructions could result in personal injury and/or property damage!
Model SQ
Direct Drive
Model SQ is a direct drive
centrifugal inline exhaust fan.
These fans are specifically
designed for inline applications.
Performance capabilities range
up to 5,000 cfm (8,500 m
and up to 2.0 in. wg (498 Pa)
of static pressure. SQ fans are
available in thirteen sizes with
nominal wheel diameter ranging from 6 to 16 inches
(152 to 406 mm) (060 - 160 unit sizes). Each fan shall
bear a permanently affixed manufacturers engraved
metal nameplate containing the model number and
individual serial number.
General Safety Information
Only qualified personnel should install this fan.
Personnel should have a clear understanding of these
instructions and should be aware of general safety
precautions. Improper installation can result in electric
shock, possible injury due to coming in contact with
moving parts, as well as other potential hazards. Other
considerations may be required if seismic activity
is present. If more information is needed, contact a
licensed professional engineer before moving forward.
DANGER
Always disconnect, lock and tag power source before
installing or servicing. Failure to disconnect power
source can result in fire, shock or serious injury.
CAUTION
When servicing the fan, motor may be hot enough
to cause pain or injury. Allow motor to cool before
servicing.
CAUTION
Precaution should be taken in explosive
atmospheres.
®
3
/hr)
Centrifugal Inline Fans
Models SQ and BSQ
Model BSQ
Belt Drive
Model
centrifugal
These
designed for inline applications.
Performance capabilities range up
to 27,200 cfm (46,200 m
up to 4.0 in. wg (996 Pa) of static
pressure. BSQ fans are available
in fourteen sizes with nominal
wheel diameter ranging from 7 to 42 inches (178
to 1067 mm) (070 - 420 unit sizes). Each fan shall
bear a permanently affixed manufacturers engraved
metal nameplate containing the model number and
individual serial number.
1. Follow all local electrical and safety codes, as
well as the National Electrical Code (NEC) and the
National Fire Protection Agency (NFPA), where
applicable. Follow the Canadian Electric Code
(CEC) in Canada.
2. The rotation of the wheel is critical. It must be free
to rotate without striking or rubbing any stationary
objects.
3. Motor must be securely and adequately grounded.
4. Do not spin fan wheel faster than max cataloged
fan RPM. Adjustments to fan speed significantly
effects motor load. If the fan RPM is changed, the
motor current should be checked to make sure it is
not exceeding the motor nameplate amps.
5. Do not allow the power cable to kink or come in
contact with oil, grease, hot surfaces or chemicals.
Replace cord immediately if damaged.
6. Verify that the power source is compatible with the
equipment.
7. Never open access doors to a duct while the fan is
running.
Centrifugal Inline Exhaust Fans
Part #472058
BSQ
is
a
belt
drive
inline
exhaust
fan.
fans
are
specifically
3
/hr) and
1
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