Greenheck Fan Tubular Centrifugal & Mixed Flow 459968 - Manual (Page 8)

8
Greenheck warrants this equipment to be free from defects in material and workmanship for a period of one year from
the purchase date. Any units or parts which prove defective during the warranty period will be replaced at our option
when returned to our factory, transportation prepaid. Motors are warranted by the motor manufacturer for a period of
one year. Should motors furnished by Greenheck prove defective during this period, they should be returned to the
nearest authorized motor service station. Greenheck will not be responsible for any removal or installation costs.
As a result of our commitment to continuous improvement, Greenheck reserves the right to change specifications
without notice.
Greenheck Catalogs Model TCF and Models QEI/QEID
provide additional information describing the equipment, fan
performance, available accessories, and specification data.
®
Phone: (715) 359-6171 • Fax: (715) 355-2399 • E-mail: [email protected] • Website: www.greenheck.com
Warranty
AMCA Publication 410-96, Safety Practices for Users and
Installers of Industrial and Commercial Fans, provides
additional safety information. This publication can be
obtained from AMCA International, Inc. at www.amca.org.
459968 • TCF and QEI/QEID, Rev. 3, July 2008 Copyright 2008 © Greenheck Fan Corporation
Troubleshooting
Problem Cause Corrective Action
Excessive Noise
Wheel Rubbing Inlet
Adjust wheel and/or inlet cone. Tighten wheel hub or bearing collars
on shaft.
V-Belt Drive
Tighten sheaves on motor/fan shaft. Adjust belt tension. Align sheaves
properly (see page 6). Replace worn belts or sheaves.
Bearings
Replace defective bearing(s). Lubricate bearings. Tighten collars and
fasteners.
Wheel Unbalance
Clean all dirt off wheel. Check wheel balance, rebalance in-place if
necessary.
Volume Too Low
Fan Check wheel for correct rotation. Increase fan speed.
Duct System See pages 3 and 4.
Volume Too High
Fan Decrease fan speed.
Duct System Resize ductwork. Access door, filters, grilles not installed.
Static Pressure Wrong
Duct system has more or less
restriction than anticipated
Change obstructions in system. Use correction factor to adjust for
temperature/altitude. Resize ductwork. Clean filters/coils. Change fan
speed.
Excessive Power Consumption
High Horsepower
Fan Check rotation of wheel.
Duct System
Resize ductwork. Check proper operation of face and bypass
dampers. Check filters and access doors.
Fan Doesn’t Operate
Electrical Supply
Check fuses/circuit breakers. Check for switches turned off or
disconnected. Check for correct supply voltage.
Drive Check for broken belts. Tighten loose pulleys.
Motor
Assure motor is correct horsepower and not tripping overload
protector.
Bearings Overheated
Lubrication Check for excessive or insufficient grease in the bearing.
Mechanical
Replace damaged bearing. Relieve excessive belt tension. Align
bearings. Check for bent shaft.
Excessive Vibration
Belts Adjust tightness of belts. Replacement belts should be a matched set.
System Unbalance
Check alignment of shaft, motor and pulleys. Adjustable pitch pulleys
with motors over 15 hp motors are especially prone to unbalance.
Check wheel balance, rebalance if necessary.