433A Conveyor Systems 5

Question 1

What is a CEMA rating for conveyor idlers?

Accepted Answer

A classification by the Conveyor Equipment Manufacturers Association that defines idler load rating, bearing life, and construction quality for different service conditions

Answer

A rating for conveyor energy usage

Answer

A Canadian electrical safety rating

Answer

A rating for belt material quality

Question 2

What is the purpose of an emergency stop pull cord (rip cord) on a belt conveyor?

Accepted Answer

To allow workers anywhere along the conveyor to immediately stop the belt by pulling the cord, in case of entanglement or emergency

Answer

To start the conveyor in an emergency

Answer

To pull the belt back on track

Answer

To tension the belt in an emergency

Question 3

What is the main cause of premature idler bearing failure on a conveyor?

Accepted Answer

Contamination from material dust and moisture penetrating the bearing seals

Answer

Operating the conveyor at rated capacity

Answer

Using the correct CEMA rating

Answer

Proper belt tracking

Question 4

What is the purpose of a transfer chute between two conveyors?

Accepted Answer

To direct material flow from the discharge of one conveyor to the loading point of the next, controlling material velocity and minimizing dust and belt wear

Answer

To transfer power between conveyors

Answer

To transfer belt tension between conveyors

Answer

To charge the material electrically

Question 5

What is belt camber and how does it affect conveyor operation?

Accepted Answer

A manufacturing defect where the belt has a built-in curve that causes consistent mistracking to one side regardless of idler adjustments

Answer

The crown on the drive pulley

Answer

Belt flexibility measurement

Answer

The angle of the troughing idlers

Question 6

What is the purpose of a belt rip detection system?

Accepted Answer

To detect longitudinal tears or rips in the belt caused by trapped foreign objects, and automatically stop the conveyor before the damage propagates the full belt length

Answer

To detect belt wear

Answer

To detect belt splice failure

Answer

To measure belt stretch