Greenheck Centrifugal (CSW, BIDW, AFDW), Industrial (IPA, IPO, IPW) and Filtered Supply (LSF) (463687) - Manual (Page 9)

9 Centrifugal, Industrial and Filtered Supply
Improper sheave
alignment
Proper sheave
alignment
Deflection =
Belt Span
64
Belt Span
V-Belt Drives
V-belt drives must be checked on a regular basis
for wear, tension, alignment and dirt accumulation.
Premature or frequent belt failures can be caused by
improper belt tension, (either too loose or too tight)
or misaligned sheaves. Abnormally high belt tension
or drive misalignment will cause excessive bearing
loads and may result in failure of the fan and/or motor
bearings. Conversely, loose belts will cause squealing
on start-up, excessive belt flutter, slippage, and
overheated sheaves. Either excessively loose or tight
belts may cause fan vibration.
When replacing V-belts on multiple groove drives all
belts should be changed to provide uniform drive
loading. Do not pry belts on or off the sheave. Loosen
belt tension until belts can be removed by simply
lifting the belts off the sheaves.
After replacing
belts, insure that
slack in each belt
is on the same
side of the drive.
Belt dressing
should never be
used.
Do not install new belts on worn sheaves. If the
sheaves have grooves worn in them, they must be
replaced before new belts are installed.
The proper tension for operating a V-belt drive is
the lowest tension at which the belts will not slip at
peak load conditions. For more information about
measuring belt tension, refer to Greenheck’s Product
Application Guide, FA/127-10 Measuring Belt Tension.
Check belt tension before start up and after the first
24 hours of operation. The belt tension should also be
checked periodically thereafter.
Model = General description of fan
S/N = Serial Number assigned by Greenheck,
which is a unique identifier for every unit
Mark = Customer supplied identification
MODEL
S/N
MARK
MAX FRPM @ 70˚ F
Unit Identification
This nameplate is an example of an identification
label on the fan. The information provides general
details about the fan, as well as containing specific
information unique to the unit. When contacting
your Greenheck representative with future needs or
questions, please have the information provided on
this nameplate available.
Nameplates are mounted in an area which is clearly
visible, usually near the fan outlet on the drive side of
the fan. The exact nameplate location may differ due
to fan model and size.
WARNING
Do not overtighten belts. Excessive belt tension can
lead to premature belt and/or bearing failure.