8. User Servicing Instructions and Troubleshooting
26
PNEG-119
Inline Centrifugal Fan
Troubleshooting
Fan Troubleshooting Chart
Symptom
Possible Cause
Solution
Fan does not run.
1. Blown fuse or breaker in disconnect switch.
1. To replace blown fuse, grasp center
of fuse securely and pull carefully outward
to remove fuse from fuse holder.
RISK OF FIRE. Replace fuse only with
equally rated fuse shown on panel label.
2. Main power not turned ON.
2. Turn power ON at all disconnects ahead
of the unit.
3. Defective wiring or loose connection.
3. Follow wiring diagram and tighten any
loose connections.
4. Incorrect wire size.
4. See wire size charts on
for proper
wire size and change if needed.
5. Overload kicked out.
5. Check manual reset, push in to reset.
6. Defective motor.
6. Replace motor.
7. Defective magnetic contactor.
7. Check the magnetic contactor.
Fan runs for a short period
of time then shuts off.
1. Undersize wiring.
1. Check to see that power supply wires
are the proper size, contact the local
power company.
2. Low line voltage at the installation.
Power failure.
2. Call power company after making sure
wire size is correct.
3. Magnetic contactor malfunctioning.
3. Change magnetic contactor.
4. Defective start/stop button.
4. Replace necessary part.
5. Overload setting incorrect.
5. Adjust overload to correct setting.
Fan makes ticking noise.
1. Fan blade hitting fan housing.
1. Stop fan and turn OFF electricity. Remove
fan screen and check to see if fan blade is
hitting the housing. Adjust motor position
to obtain proper clearance.
2. Motor bearing bad.
2. Replace motor bearing.
Fan vibrates.
1. Fan not mounted securely to pad.
1. Mount fan securely.
2. Fan not level.
2. Level fan.
3. Fan has dirt deposit on blade.
3. Clean blade.
4. Motor shaft is bent.
4. Replace motor.
5. Blade not mounted properly on shaft.
5. Mount blade properly on shaft.
6. Blade out of balance.
6. Replace or have blade rebalanced.
Summary of Contents for PNEG-119
Page 28: ...28 PNEG 119 Inline Centrifugal Fan 10 Wiring Diagrams 1 Phase 230 Volt Schematic ...
Page 30: ...10 Wiring Diagrams 30 PNEG 119 Inline Centrifugal Fan 3 Phase 230 Volt Schematic ...
Page 32: ...10 Wiring Diagrams 32 PNEG 119 Inline Centrifugal Fan 3 Phase 460 Volt Schematic ...
Page 34: ...10 Wiring Diagrams 34 PNEG 119 Inline Centrifugal Fan 3 Phase 575 Volt Schematic ...
