Greenheck Fan 459968 manual Troubleshooting, Warranty, Problem, Cause, Corrective Action

Troubleshooting

Problem	Cause	Corrective Action
	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.
Excessive Noise
	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.
	Duct system has more or less	Change obstructions in system. Use correction factor to adjust for
Static Pressure Wrong		temperature/altitude. Resize ductwork. Clean filters/coils. Change fan
	restriction than anticipated
		speed.
Excessive Power Consumption	Fan	Check rotation of wheel.
		Resize ductwork. Check proper operation of face and bypass
High Horsepower	Duct System
		dampers. Check filters and access doors.
	Electrical Supply	Check fuses/circuit breakers. Check for switches turned off or
		disconnected. Check for correct supply voltage.
Fan Doesn’t Operate
	Drive	Check for broken belts. Tighten loose pulleys.
	Motor	Assure motor is correct horsepower and not tripping overload
		protector.
	Lubrication	Check for excessive or insufficient grease in the bearing.
Bearings Overheated
	Mechanical	Replace damaged bearing. Relieve excessive belt tension. Align
		bearings. Check for bent shaft.
	Belts	Adjust tightness of belts. Replacement belts should be a matched set.
Excessive Vibration		Check alignment of shaft, motor and pulleys. Adjustable pitch pulleys
	System Unbalance	with motors over 15 hp motors are especially prone to unbalance.
		Check wheel balance, rebalance if necessary.
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.

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.

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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 Copyright 2008 © Greenheck Fan Corporation