Accurex XRUD-121 Handbuch für Installation, Betrieb und Wartung - Seite 2

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Maintenance

Motor maintenance is generally limited to cleaning and lubrication (where applicable). Cleaning should be limited to exterior

surfaces only. Removing dust buildup on motor housing ensures proper motor cooling. Greasing of motors is only intended

when fittings are provided. Many fractional motors are permanently lubricated and should not be lubricated after installation.

Motors supplied with grease fittings should be greased in accordance with manufacturers' recommendations. With motor

temperatures under 104ºF (40ºC), the grease should be replaced after 2000 hours of running time as a general rule.

Wheels require very little attention when moving clean air. Occasionally, oil and dust may accumulate causing imbalance.

When this occurs, the wheel and housing should be cleaned to ensure smooth and safe operation.

All fasteners should be checked for tightness each time maintenance checks are performed prior to restarting unit.

A proper maintenance program will help these units deliver years of dependable service.

Troubleshooting

PRObLEM

REDUCED

AIRfLOW

ExCESSIvE

NOISE OR

vIbRATION

NOTE: Before taking any corrective action, make certain unit is not capable of operation during repairs.

Replacement

Parts

*VERTICAL

NOTE

Each fan bears a manufacturer's nameplate with model number and serial number embossed. This information

will assist the local Accurex representative and the factory in providing service and replacement parts.

Accurex warrants this equipment to be free from defects in

material and workmanship for a period of one year from the date of

purchase. Any units or parts which prove to be 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

Accurex prove defective during this period, they should be returned

to the nearest authorized motor service station. Accurex will not be

responsible for any removal or installation costs.

As a result of our commitment to continuous improvement, Accurex

reserves the right to change specifications without notice.

CAUSE

System resistance too high.

Unit running backwards.

Excessive dirt buildup on wheel.

Improper wheel alignment.

Wheel improperly aligned and rubbing.

Foreign objects in wheel or housing.

Unbalance of wheel caused by excessive

dirt and grease buildup.

HOOD

BIRDGUARD

CONDUIT

CHASE

SUPPORTS

*DRAIN

TROUGH

*CURB CAP /

VENTURI

Warranty

CORRECTIvE ACTION

Check system: Proper operation of

backdraft or control dampers,

obstruction in ductwork, etc.

Correct as shown in Fig. 2.

Clean wheel.

See Fig. 1 and Pre-Starting Checks.

Remove objects, check for damage.

Remove buildup.

MOTOR

SHOCK

MOUNTS

BREATHER

TUBE

*WINDBAND

*For replacement, the windband,

vertical supports, drain trough

WHEEL

and curb cap/venturi come as one

complete assembly.

P.O. Box 410 Schofield, WI 54476

Phone: 800.333.1400 Fax: 715.241.6191

www.accurex-systems.com

IOM XRUD Rev. 1 June 2007