TROUBLESHOOTING

 

 

 

 

SECTION 7-3

 

 

 

 

Mechanical Faults

 

 

 

 

 

 

PROBLEM

 

PROBABLE CAUSE

 

REMEDY

Mechanical Faults

 

 

 

 

 

A. Bearing overheating

1.

Excessive wear on the V-

1.

Check belt tension and

 

 

Belt drive

adjust as necessary

 

 

2.

Inadequate lubrication

2.

Check lubrication frequency

 

 

 

 

and the recommended

 

 

 

 

lubricants in motor and rotor

 

 

 

 

bearings

 

 

3.

Dirt/Contamination in

3.

Eliminate source of

 

 

bearing

contamination

 

B. Visible cracks in knives

1.

Incorrect grinding

1.

Check grinding procedures

 

 

procedure or incorrect

and contact a Cumberland

 

 

grinding wheels in use

Service Engineer

 

C. Knives moving on seats

1.

Uneven knifes seat surfaces

1.

Clean knife seats to provide

 

 

 

 

maximum bearing surface

 

 

2.

Loose knife screws

2.

Tighten to correct torque,

 

 

 

 

per section 4

 

 

3.

Stretched knife screws

3.

Knife screws should not be

 

 

 

 

used more than six times.

 

 

 

 

Renew them if there is

 

 

 

 

evidence of stretching

 

D. Knives breaking

1.

Possibly due to cracks

1.

Refer to problem B.

 

 

caused by incorrect grinding

“Visible cracks in knives”

 

 

 

 

(above left)

 

 

2.

Abnormally heavy material

2.

Contact a Cumberland

 

 

 

 

Service Engineer

 

 

3.

Contaminated input

3.

Inspect the material for

 

 

material

contaminates and foreign

 

 

 

 

matter

 

E. Excessive knife wear

1.

Open knife setting

1.

Reset as detailed in

 

 

 

 

alternate material

 

 

2.

Abrasive materials

2.

Contact a Cumberland

 

 

 

 

Service Engineer

 

F. Screens wearing

1.

Incorrectly seated

1.

Check that the screen is

 

 

 

 

seated correctly and fully on

 

 

 

 

its cradle

 

 

2.

Abrasive materials being

2.

Obtain special alloy or heat

 

 

granulated

treated screens

 

96

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Image 96
Sterling D48160s manual Mechanical Faults