Vibratory Feeder Bowls, 
Parts Orientation, Hoppers, Service 
and lots more.

 

 TROUBLESHOOTING Vibratory feeder bowls

PROBLEM

POSSIBLE CAUSE

CORRECTION
UNIT HUMS BUT DOES NOT VIBRATE Defective controller

Controller not properly set

 Replace.

Check to see controller is set properly for type of drive unit.

R.C. Units - "Half Wave / 60"

A.C. Units - "Full Wave /120"
UNIT STRIKING Air gap set too close

 

 Adjust spacing as close as possible without striking under load. Ensure armature and core faces are parallel across entire area.
Bowl or inline too close together Move bowl back using the clearance in mounting feet of the bowl.
COIL HEATING UP - EXCESSIVE CURRENT DRAW Air gap set too wide

 

 Under normal operation coil will run warm but NEVER too hot to touch. Adjust air gap closer but not too close as to cause striking.
  Improper tune on feeder bowl causing controller to be turned up too high Tune drive unit. (See Tuning Section)
UNIT DOES NOT OPERATE Lack of power supply to controller or between controller and unit.

Voltage and frequency not as per name plate.

Coil burned out or grounded.

 

 Check wiring, fuses, loose components in Controller, etc.

Correct as required.


Check for magnetism using a thin scale between coil and striker plate - replace if defective.

or:
  High level track sensor blocked.

Clear interrupted signal.

Check for damaged sensor.

Check for dirty fibre optic sensor.

 
FEEDER BOWL OPERATING BELOW CAPACITY - FEED RATE LOW BUT SPEED O.K. Overloaded feeder bowl.


Worn out feeder bowl or worn "rate making" areas.


Incorrect manifold air pressure.


Orienting features not adjusted correctly.

"Rate making" air jets broken or position changed

 See Operating and Installation Section.

Repair or replace as required. *Repairs should be performed by Crown.

Unless otherwise specified air pressure should be set at 50 psi.

Position properly and tighten.


Position properly or replace broken parts.
DECREASED FEEDER BOWL OUTPUT Low voltage.

Feeder bowl touching rigid surface.

Defective or dirty leaf springs.


Spring clamping bolts improperly torqued.

Feeder bowl or bowl mounting arm cracked

Unit improperly tuned

Air Gap set too wide

Orienting features altered or damaged

Bowl surface too smooth - eliminating friction needed to transfer parts

 Repair as required.

Reposition correctly.


Clean or replace. (See Spring Replacement Section)

Ensure torqued to 140 inch-pounds.

Repair or replace as required.


Adjust to correct. (See Tuning Section)

Adjust to correct. (See Air Gap Adjustment Section)

Check for loose hardware and tighten. *Repairs should be performed by Crown.

Grind bowl tracks and bowl bottom. (Call Crown first before performing such repair)