Schaefer VAF8000A/A-3/B-3 Owner's Manual & Safety Instructions

AMERIC AXIAL FAN TROUBLESHOOTING
CAUTION: All service procedures should be executed with the unit unplugged.
CAUSE
PROBLEM
1 No power to unit.
Unit will not run.
2) Switch not on.
3) Switch is faulty.
4) Faulty / Broken cord or motor wire.
1) Unit has been severely jolted causing fan to
Unit runs but fan
rub against housing.
makes loud scraping
2) Unit has been severely jolted causing
noise.
housing to deform.
1) Severe jolt has bent motor shaft causing
Unit runs but
unit to be out of balance.
vibrates
2) Fan blade damaged.
excessively.
3) Dirt build up on one side of fan blade.
1) Fan is jammed against housing.
Unit runs but fan
2) Capacitor wire has broken/come loose,
does not turn.
capacitor has failed.
3) Housing has been damaged such that it
presses on the fan blade.
1) Motor bearings are failing, or motor has
Unit runs briefly,
developed an internal electric fault.
then shuts off on
2) Intake grill and/or exhaust grill is obstructed.
overload.
3) Excessive duct length.
Item Part# Each Description
1 RING-VAF8000 2 Duct Ring 20" ABS
2 Guard-VAF8000 2 Wire Guard 20"
4 HSG-VAF8000 1 Housing Blue VAF8000
5 CS253 1 Motor 5HP 3Ph
CS251 1 Motor 5HP 1Ph
6 BLD-VAF8000-60 1 60 Hz Fan Blade Assembly
BLD-VAF8000-50 1 50 Hz Fan Blade Assembly
7 MTRVN-VAF8000 2 Motor Mount Primary Vane
8 SECVN-VAF8000 4 Secondary Vane
9 0B51624X1HZ 12 Bolt 5/16"-24 x 1" Hex Zinc
10 0B1420X114HZ 24 Bolt 1/4"-20x1-1/4" Hex Zinc
11 SWPNL-VAF8000 1 Switch Mount Panel
12 0RF212OD 4 Rubber Foot
13 0RIVET6-8A-B 20 Rivet 3/16"x1/2"G ABA
14 CORD-12/4-20 1 Power Cord Black 20'
15 0MS-KTA725S10A 1 Motor Starter 440V 10A 3Ph
0MS-KTA725S16A 1 Motor Starter 220V 16A 3Ph
0MS-KTA725S25A 1 Motor Starter 220V 25A 1Ph
16 0W1132X114Z 6 Washer 11/32"x1-1/4"x1/8" Z
17 0W14X1Z 4 Washer 1/4" x 1" Zinc
18 0GSKT-8000KTA7 1 Gasket Power Panel
19 0S-KT7AYTG2 1 Operator Switch
20 0FLEXPVC12 3 1/2" Flexible PVCConduit
©2012 Schaefer Ventilation Equipment. All rights reserved.
M-VAF8000A/A-3/B-3
SOLUTION
1) Plug unit in. Check circuit breaker.
2) Place in "ON" position.
3) Replace switch.
4) Perform continuity check, using volt/amp meter,
Repair/replace faulty/broken wire.
1) Remove motor and replace damaged motor
mounts.
2) Replace housing/unit as necessary.
1) Remove and replace motor. Replace fan blade if
necessary.
2) Replace fan blade.
3) Clean fan blade.
1) Remove motor and replace damaged motor
mounts. Replace fan blade if necessary.
2) Repair/replace wires/capacitor as necessary.
3) Replace housing/unit as necessary.
1) Replace motor.
2) Remove obstruction.
3) Reduce duct length to recommended maximum.
Item Part# Each Description
21 1 Shackle 5/8" Screw Pin
SHACKLE58-6500G
22 0WNJ1420R 4 Well Nut J1420 Rubber
23 0NY51624Z 12 Nylock 5/16"-24 Zinc
24 MSBOX-VAF8000 1 Motor Starter Box
25 0B1420X112HZ 12 Bolt 1/4"-20x1-1/2" Hex Zinc
26 DINRAIL-3 1 DIN Rail 35mm x7.5mm Zinc
27 0NY1420Z 32 Nylock 1/4"-20 Zinc
28 0W14STDZ 48 Washer 1/4" USS
29 0W14SAE 40 Washer 1/4" SAE
30 0CFLT12 2 Conduit Fitting 1/2" Snap In
31 CONNECTOR34 1 Cordgrip Liq. Tight 3/4" NPT
0LNROMEX34 1 Lock Nut for 3/4" Cord Grip
0ORING214SQ 1 O-Ring 214 Square
32 0WIL10STDZ 2 Washer Internal Lock #10 Z
0RGTERM1210-10 1 Ring Terminal #10 12-10 AWG
33 0B1032X58PHRHZ 4 Bolt 10-32x5/8" Rnd Head Z
0B1032X12SCS 2 Bolt 10-32x1/2" SC Screw Z
0W10X58SS 2 Washer Fender #10
0NY1032Z 3 Nylock 10-32 Zinc
LABELVAF8000440 1 Label VAF8000 440V
OWNER'S MANUAL

SAFETY INSTRUCTIONS

Please read and keep these instructions with the fan.
MODEL: VAF8000A/A-3/B-3
For use in Non-Explosive/Non-Flammable environments only.
Purchase Date: ___________________ Serial No. ___________________
Dealer: ______________________________________
1.800.779.3267 • www.schaeferfan.com