Triangle Engineering QB2 4223 Installation And Operation Instructions page 3

SYMPTOM
Fan does not operate
Insufficient air flow
Squealing, slapping or whining
noises while operating
WARNING: Disconnect power before servicing
MINOR AND ROUTINE
1. Motor bearings are pre-lubricated ball bear-
ings. Re-lubrication is not required.
2. Keep guards and blade clean by vacuum-
ing or wiping periodically. Also keep motor
from accumulating excessive dust that may
cause overheating.
DISASSEMBLY PROCEDURE
1. Disconnect cord from power supply.
2. Remove guard screws.
3. Remove Guard.
QB2 Wiring Diagram
TROUBLEShOOTING
POSSIBLE CAUSE(S)
1. Faulty switch
2. Defective motor
3. No power
1. Loose pulleys or fan blade
2. Intake guard or exhaust
guard excessively dirty
3. Loose belt
1. Defective motor bearings
2. Defective fan bearings
3. Loose belt
4. Worn belt
MAINTENANCE
CORRECTIvE ACTION
1. Replace switch
2. Replace motor
3. Check to see if power cord
is plugged in. Check fuse or
circuit breaker.
1. Tighten pulley set screw
2. Clean guards
3. Move motor to tighten belt
1. Replace motor
2. Replace bearings and seals
3. Move motor to tighten belt
4. Replace belt
NOTE: Upon completion of maintenance, rein-
stall components in reverse order as indicated
above.
WhEN ORDERING REPAIR PARTS
always give the following information:
1. Part description
2. Model Number of fan
3. Serial number
Motor