Troubleshooting; Warranty - Greenheck TCF Installation, Operation And Maintenance Manual

Troubleshooting

Problem
Excessive Noise
Volume Too Low
Volume Too High
Static Pressure Wrong
Excessive Power Consumption
High Horsepower
Fan Doesn't Operate
Bearings Overheated
Excessive Vibration

Warranty

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: gfcinfo@greenheck.com • Website: www.greenheck.com
8
459968 • TCF and QEI/QEID, Rev. 3, July 2008
Cause
Wheel Rubbing Inlet
V-Belt Drive
Bearings
Wheel Unbalance
Fan
Duct System
Fan
Duct System
Duct system has more or less
restriction than anticipated
Fan
Duct System
Electrical Supply
Drive
Motor
Lubrication
Mechanical
Belts
System Unbalance
Corrective Action
Adjust wheel and/or inlet cone. Tighten wheel hub or bearing collars
on shaft.
Tighten sheaves on motor/fan shaft. Adjust belt tension. Align sheaves
properly (see page 6). Replace worn belts or sheaves.
Replace defective bearing(s). Lubricate bearings. Tighten collars and
fasteners.
Clean all dirt off wheel. Check wheel balance, rebalance in-place if
necessary.
Check wheel for correct rotation. Increase fan speed.
See pages 3 and 4.
Decrease fan speed.
Resize ductwork. Access door, filters, grilles not installed.
Change obstructions in system. Use correction factor to adjust for
temperature/altitude. Resize ductwork. Clean filters/coils. Change fan
speed.
Check rotation of wheel.
Resize ductwork. Check proper operation of face and bypass
dampers. Check filters and access doors.
Check fuses/circuit breakers. Check for switches turned off or
disconnected. Check for correct supply voltage.
Check for broken belts. Tighten loose pulleys.
Assure motor is correct horsepower and not tripping overload
protector.
Check for excessive or insufficient grease in the bearing.
Replace damaged bearing. Relieve excessive belt tension. Align
bearings. Check for bent shaft.
Adjust tightness of belts. Replacement belts should be a matched set.
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.
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.
Copyright 2008 © Greenheck Fan Corporation