Utility and Centrifugal Fans
4
®
Guards – Motor Cover, Weatherhood,
Shaft, Belt, Inlet or Outlet Guard
Do not operate fans without proper protective devices
in place. Failure to do so may result in serious bodily
injury and property damage. Check local codes to
ensure compliance for all protective devices.
Access Doors
Before opening access doors, ensure the fan wheel
has stopped moving and that the wheel has been
secured from being able to rotate. Do not operate fan
without access door in its fully closed position.
Air Pressure and Suction
In addition to the usual hazards associated with
rotating machinery, fans also create a dangerous
suction at the inlet. Special caution needs to be used
when moving around a fan, whether it is in operation
or not. Before start-up, make sure the inlet area is
clear of personnel and loose objects.
To ensure a successful installation, the instructions in
this manual should be read and adhered to. Failure to
comply with proper installation procedures may void
the warranty.
Unit and System Identification Tags
Each fan has a permanently affixed manufacturer’s
engraved metal nameplate containing the model
number and individual serial number.
The tag shown
is an example of
an identification
nameplate on the
fan. The information
provides general
details about the fan,
as well as containing specific information unique to
the unit. When contacting your local manufacturer’s
representative with future needs or questions, please
have the information on this label available. Tags are
mounted in an area which is clearly visible, usually on
the side of the fan cabinet.
Pre-Installation Information
Before installation, it is important to be certain the
mounting surface will bear the operating weight of the
unit. For proper unit operation, it is also important that
it be operated in a completely level position.
For further details on safety practices involving
industrial and commercial fans, please refer to AMCA
Publication 410.
Electrical Disconnects
All fan motors should have disconnects located in
close visual proximity to turn off electrical service.
Service disconnects shall be locked-out when
maintenance is being performed.
Moving Parts
All moving parts must have guards to protect
personnel. Refer to local codes for requirements as to
the number, type and design. Fully secure fan wheel
before performing any maintenance. The fan wheel
may start “free wheeling” even if all electrical power
has been disconnected. Before the initial start-up or
any restart, check the following items to make sure
that they are installed and secure.
• Do not spin fan wheel faster than the maximum
cataloged fan RPM.
• Adjustments to fan speed significantly affects
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.
General Information
NOTE
The USFD-100 model has an integrated electrical
disconnect.
