Grain Systems PNEG-119 - Manual (Page 18)

18 PNEG-119 Inline Centrifugal Fan
8. User Servicing Instructions and Troubleshooting
Hub Bolt Torque Requirement for Fan Blades
18"-1.5 HP through 18" 3 HP..........................12 ft. lbs. (Browning)
24"-7 HP through 28" 15 HP...........................16 ft. lbs. (Browning)
Important Information Regarding Fuse Replacement
This product employs overload protection (fuse). A blown fuse indicates an overload or short circuit
situation. If the fuse blows, disconnect all power to the product. Replace the fuse as per the user servicing
instructions (follow product marking for proper fuse rating) and check the product. If the replacement fuse
blows, a short circuit may be present and the user should discontinue use of the product until customer
service can be contacted for further assistance.
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 Page 11 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.