Hazardous Sidewall Propeller Fans
4
®
Electrical Connection
NOTE:
Refer to motor nameplate for wiring procedures.
Refer to switch manufacturer for installation and wiring
procedures.
1. Motor and fan must be securely grounded (bare
metal) to a suitable electric ground, such as a
grounded water pipe or ground wire system.
Comply with all local and national safety codes
including the National Electrical Code (NEC) and
National Fire Protection Act (NFPA).
WARNING
Comply with all local and national safety codes
including the National Electrical Code (NEC) and
National Fire Protection Act (NFPA).
AVERTISSEMENT
Respecter tous les codes de sécurité en vigueur,
notamment le National Electrical Code (NEC) et le
National Fire Protection Act (NFPA).
NOTE:
Motor and switch must be classified as
hazardous for fan to be suitable for use in hazardous
environments. Installation must be performed
by qualified personnel with a suitable motor and
disconnect for application.
2. Wire motor for desired voltage per wiring diagram
on motor.
3. Wire control switches at ground level.
4. Before activating fan, inspect to be sure that there
are no obstructions or debris that would interfere
with the propeller.
Pre-Starting Checks
1. Check all fasteners and setscrews for tightness.
2. The propeller should rotate freely and not rub on
the fan panel venturi. Rotation direction of the
propeller should be checked by momentarily
turning the unit on. Propeller blade should cup and
throw the air when rotating in the correct rotation
as shown in the figure below. Rotation should be in
the same direction as the rotation decal affixed to
the unit.
3. For 3-phase installations, fan rotation can be
reversed by simply interchanging any two of the
three electrical leads. For single-phase installations
follow the wiring diagram located on the motor.
WARNING
Always disconnect, lock and tag power source before
installing or servicing. Failure to disconnect power
source can result in fire, shock or serious injury.
AVERTISSEMENT
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.
Routine Maintenance
Once the fan has been put into operation, a periodic
maintenance program should be set up to preserve
the reliability and performance of the fan. Items to be
included in this program are: Fasteners and Setscrews,
Lubrication, and Removal of Dust and Dirt.
Fasteners and Setscrews
Any fan vibration has a tendency to loosen mechanical
fasteners. A periodic inspection should include checking
all fasteners and setscrews for tightness. Particular
attention should be paid to setscrews or taper-lock
bushings attaching the propeller to the motor shaft. In
addition, check all fasteners attaching the motor to the
motor plate.
Lubrication
Many fractional horsepower motors installed on
the smaller fans are lubricated for life and require
no further attention. Motors equipped with oil holes
should be oiled in accordance with the manufacturer’s
instructions printed on the motor. Use a high grade SAE
20 machine oil and use caution not to over lubricate.
Motors supplied with grease fittings should be greased
according to directions printed on the motor.
Removal of Dust and Dirt
Dirt can clog cooling openings on the motor housing,
and collect on propeller blades causing severe
imbalance if left unchecked. The exterior surface of
the motor, fan panel and entire propeller should be
thoroughly cleaned periodically. Use caution and do not
allow water or solvents to enter the motor. Motors must
not be sprayed with steam or water.
NOTE:
No repair parts available for Hazardous Location
Fans.
Maintenance
