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Sidewall Propeller Fans

7

®

PROBLEM

CAUSE

CORRECTIVE ACTION

Too much airflow Resistance lower than designed

Decrease fan speed.

Reduced airflow

System resistance too high

Check backdraft dampers for proper operation. Remove obstructions in 
ductwork. Clean dirty filters. Check for adequate supply air for exhaust 
fans or exhaust air for supply fans.

Fan too close to damper

Increase distance between fan and damper.

Fan speed too low

Increase fan speed.

Excessive dirt buildup on propeller

Clean propeller.

Excessive noise

Excessive vibration

Clean dirt buildup from propeller. Check all setscrews and fasteners for 
tightness. Check for worn bearing. Correct propeller imbalance. Check 
for loose dampers, guards or ductwork.

Defective motor

Replace motor.

Variable frequency drive (VFD)

Check VFD for drive setting, some controllers are able to be adjusted 
to lower the harmonic noises sometimes heard during operation by 
adjusting a simple setting on the controller.

Debris

Remove all debris from the fan.

Fan does not 
operate

Electrical supply

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

Motor

Assure motor is correct horsepower and not tripping overload protector.

WARNING

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

Troubleshooting

1.  Fan Panel
2.  Propeller
3.  Venturi Insert
4.  Corner Brackets (4)
5.  Drive Frame Upper Arm (2)
6.  Motor
7.  Motor Plate
8.  Drive Frame Lower Arm (2)

1

1

2

2

3

3

4

4

5

5

6

Exhaust

Airflow

Exhaust

Airflow

Airflow

Supply

Airflow

Supply

Exhaust

Airflow

Airflow

Supply

1

2

3

4

5

6

7

8

Direct Drive AER-M

Each fan bears a manufacturer’s nameplate with model number and serial number embossed. This information 
will assist the local representative and the factory in providing service and replacement parts. Before taking any 
corrective action, make certain unit is not capable of operation during repairs.

Parts List

Содержание AER-M

Страница 1: ...quately grounded 4 Do not spin fan propeller faster than max cataloged fan RPM Adjustments to fan speed significantly affects motor load If the fan RPM is changed the motor current should be checked t...

Страница 2: ...build up Leave coverings loose to permit air circulation and to allow for periodic inspection The unit should be stored at least 3 1 2 inch 89 mm off the floor on wooden blocks covered with moisture...

Страница 3: ...it be operated in a completely level position For further details on safety practices involving industrial and commercial fans please refer to AMCA Publication 410 Electrical Disconnects All fan motor...

Страница 4: ...ortant to reduce turbulence and damper flutter which may lead to premature damper failure Pre Installation Checks Fan Size Damper Size Square Recommended Wall Opening W O Square M Minimum Figure 1 Fig...

Страница 5: ...heavy motors and all Filtered Supply Wall Housings need additional bracing Typical Installation Check all fasteners and setscrews for tightness This is especially important for bearing setscrews The...

Страница 6: ...o the bearings In addition check all fasteners attaching the motor to the motor plate Lubrication Many fractional horsepower motors installed on the smaller fans are lubricated for life and require no...

Страница 7: ...ises sometimes heard during operation by adjusting a simple setting on the controller Debris Remove all debris from the fan Fan does not operate Electrical supply Check fuses circuit breakers Check fo...

Страница 8: ...Phase _______ Actual Voltage ________ Hertz _______ Phase __________ Amps ________________ Mark _________________ Actual Amperage ______________________________________ Supply hp ____________ Exhaust...

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