Grain-systems PNEG-377 User Manual download pdf (Page 12)

12

Fan and Heater

SYMPTOM

Fan will not run

Fan runs for a short period

of time then shuts off

Fan makes ticking noise

Fan vibrates

POSSIBLE CAUSE

Blown fuse or breaker in disconnect switch

Main power not turned on

Defective wiring or loose connection

Incorrect wire size

Overload kicked out

Defective motor

Defective magnetic contactor

Undersize wiring

Low line voltage at the installation. Power

failure.

Magnetic contactor malfunctioning.

Defective start/stop button

Wrong heater strip

Fan blade hitting fan housing

Motor bearing bad

Fan not mounted securely to pad.

Fan not level

Fan has dirt deposit on blade

Motor shaft is bent

Blade not mounted properly on shaft

Blade out of balance

SOLUTION

Replace fuses or reset breakers

Turn power on at all disconnects

ahead of the unit

Follow wiring diagram and tighten

any loose connections

See wire size charts for proper sire

size and change if needed

Check manual reset, push in to reset

Replace motor

Check the magnetic contactor

Check to see that power supply wires

are the proper size, contact your local

power company.

Call power company after making

sure wire size is correct

Change magnetic contactor

Replace necessary part

Replace with proper heater strip

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.

Replace motor bearing

Mount fan securely

Level fan

Clean blade

Replace motor

Mount blade properly on shaft

Replace or have blade rebalanced

Fan Troubleshooting Chart

FAN TROUBLESHOOTING

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 97 98

Comments to this Manuals

No comments