Accurex XRUB Belt Drive Kurulum, Kullanım ve Bakım Kılavuzu - Sayfa 12

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1. Parts List

Troubleshooting

WARNING

Before taking any corrective action, make certain unit

is not capable of operation during repairs.

PROBLEM

Wheel rubbing inlet

V-belt drive

Bearings

Wheel unbalance

Excessive

Belts too tight or too loose

noise

Wheel improperly aligned and rubbing Center wheel on inlet, see page 7, Figure 12.

or vibration

Loose drive or motor pulleys

Foreign objects in wheel or housing

Fan base not securely anchored

Motor hood loose and rattling

Defective or loose motor bearings

Fan

High

horsepower

Duct system

Electrical supply

Fan does

Drive

not operate

Motor

Lubrication

Mechanical

Belt slippage

Motor

Over/Under line voltage

overloads

or overheats

Incorrect wheel rotation

Wheel RPM too high

Undersized motor

Motor wired incorrectly

System resistance too high

Unit running backwards

Excessive dirt buildup on wheels

Reduced

Improper wheel alignment

airﬂow

Dampers closed

Blocked duct/clogged ﬁlter

Belt slippage

Speed too slow

Our Commitment

As a result of our commitment to continuous improvement, Accurex reserves the right to change speciﬁcations

without notice.

Product warranties can be found online at accurex.com, either on the speciﬁc product page or in the Warranty

section of the website at Accurex.com/Resources/Warranty.

P.O. Box 410 Schoﬁeld, WI 54476

Phone: 800.333.1400 • Fax: 715.241.6191

Parts: 800.355.5354 • accurex.com

474737 • XRUD and XRUB, Rev. 11, November 2018

CAUSE

Adjust wheel and/or inlet cone. Tighten wheel hub or bearing collars on shaft.

Tighten pulleys on motor/fan shaft. Adjust belt tension. Align pulleys properly,

see page 7, Figures 14 and 15. Replace worn belts or pulleys.

Replace defective bearing(s). Lubricate bearings. Tighten collars and fasteners.

Clean all dirt off wheel. Check wheel balance, rebalance in place if necessary.

Adjust tension, see page 8, Figures 17a and 17b.

Align and tighten. See "Pre-Starting Checks", pages 7 and 8.

Remove objects, check for damage or unbalance.

Secure properly.

Tighten fasteners to secure the motor hood.

Replace motor with same frame size, RPM-HP

Check rotation of wheel, see page 7, Figure 13. Reduce fan speed.

Resize ductwork. Check proper operation of face and bypass dampers.

Check filters and access doors.

Check fuses/circuit breakers. Check for switches off. Check for correct supply voltage.

Check for broken belts. Tighten loose pulleys or belts.

Ensure 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 tension or replace bad belts, see pages 7 and 8.

Contact power company.

Check motor wiring, see page 4, Figure 6. Conﬁrm wheel rotation, see page 7, Figure 13.

Check drives or slow down fan by opening variable pitch pulley on motor shaft.

Check motor ratings with catalog speed and air capacity chart.

Check motor wiring to wiring diagram located on fan motor.

Check system: Proper operation of backdraft or control dampers, obstruction in

ductwork, clean dirty ﬁlters.

Correct as shown see page 7, Figure 13.

Clean wheel, see page 7.

Center wheel on inlet, see "Pre-Starting Checks".

Inspect and repair.

Clean or replace.

Replace and adjust tension.

Check for correct drives.

AVERTISSEMENT

Avant d'entreprendre toute action corrective, s'assurer

que l'appareil ne pourra pas fonctionner durant les

réparations.

CORRECTIVE ACTION