Greenheck SQ and BSQ (472058) User Manual
Installation, operation and maintenance manual, General safety information

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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!
Centrifugal Inline Fans
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Document 472058
Models SQ and BSQ
Centrifugal Inline Fans
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.
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.
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
3
/hr) 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 to 160
unit sizes). Each fan shall bear a permanently affixed
manufacturers engraved metal nameplate containing the
model number and individual serial number.
Model BSQ Belt Drive
Model BSQ is a belt drive centrifugal inline
exhaust fan. These fans are specifically
designed for inline applications.
Performance capabilities range up to
27,200 cfm (46,200 m
3
/hr) and 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 to 420 unit sizes). Each fan shall bear
a permanently affixed manufacturers engraved metal
nameplate containing the model number and individual
serial number.
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.
DANGER
Pour écarter les risques d’incendie, de choc électrique
ou de blessure grave, veiller à toujours débrancher,
verrouiller et étiqueter la source de courant avant
l’installation ou l’entretien.
ATTENTION
Lors de toute intervention sur la soufflante, le moteur
peut être suffisamment chaud pour provoquer une
douleur voire une blessure. Laisser le moteur refroidir
avant toute maintenance.
ATTENTION
Faire preuve de précaution dans les atmosphères
explosives.