L.B. White 24D370, Owner'S Manual

Page: 7 / 8

Galvanized Box Fans
Owner’s Manual • Galvanized Box Fans
7
Galvanized Box Fan Models
Service Parts Identification Schematic
Symptom Possible Cause(s) Corrective Action
Fan will not start 1. Tripped circuit breaker
2. Defective motor
3. Incorrectly wired
4. Electricity turned off
1. Reset circuit breaker
2. Repair or replace
3. Shut off power, check for proper connec -
tions
4. Contact local power company
Excessive noise or vibration 1. Blade is hitting housing
2. Blade is bent
3. Fan not securely anchored
4. Bad/noisy bearings
1. Free blade of obstruction
2. Replace blade
3. Secure properly
4. Replace motor
Insufficient airflow 1. Incorrect voltage applied
2. Defective motor
3. Propeller is damaged
4. Blocked Airflow
5. Not enough intake air
6. Fan is dirty
1. Wire properly
2. Replace motor
3. Replace propeller
4. Remove obstructions
5. Add additional air intake openings
6. Clean fan guards/screens, motor and
propeller
Motor overheats or trips out 1. Over/under line voltage
2. Defective motor
3. Fan is dirty.
4. Not enough intake air
1. Contact local power company
2. Replace motor
3. Clean fan guards/screens, motor and
propeller
4. Add additional air intake openings
Note: Aluminum discharge shutter not shown.
Item Description 24D370 36D370-N 36D370S-N 36D370T-N 48D750-N 48D750-N
1 Intake & Discharge screen 24SCREEN-N 36SCREEN-N 36SCREEN-N 36SCREEN-N 48SCREEN-N 48SCREEN-N
2 Self tapping screw S002 S002 S002 S002 S002 S002
3 Clip for screen CLIP-SC CLIP-SC CLIP-SC CLIP-SC CLIP-SC CLIP-SC
4 Motor B370-6E B370-8E B370-8E B370-8TE A750-8VE A750-8TVE
5 Upright frame piece N/A N/A N/A N/A N/A N/A
6 Side panel piece N/A N/A N/A N/A N/A N/A
7 Locking nut, 5/16-18 N004 N004 N004 N004 N004 N004
8 Hex head bolt, 5/16-18X1” B011 B011 B011 B011 B011 B011
9 Venturi panel N/A N/A N/A N/A N/A N/A
10 Carriage bolt, 5/16-18X3/4” B014 B014 B014 B014 B014 B014
11 Locking nut, 10-32 N002 N002 N002 N002 N/A N/A
12 Propeller 9001566 9001481 9001481 9001481 9001567 9001567
13 Motor mounting plate N/A N/A N/A N/A N/A N/A
- Alum discharge shutter N/A N/A SA36DX N/A N/A N/A