American-sanders FloorCrafter Belt Sander User Manual download pdf (Page 14)

ENGLISH

-14- Clarke

American Sanders Operator's Manual (EN) - Floorcrafter

Figure 14

Chatter Wave Prevention

Clarke Sanders are designed and manufactured to the most rigid toler-

ances. However, after a nishing cut it is possible to see “chatter” or

“waves”.

The best guarantee to remove the chatter is to nish the oor with a

rotating horizontal sander, such as Clarke’s Sander 16.

To minimize chatter when using a belt or drum sander the following

steps should be taken:

1. DRUM MARKS...are caused by the operator lowering the drum

to the oor without forward traverse. These marks should be

removed by cutting at a 45 degree angle to the mark. Cutting at

the mark while maintaining the same path will only increase the

mark depth and width.

(See gure 14)

2. UNEVEN WALKING SPACE...can leave lengthy “waves”.

The machine cuts more material during the slower pace. Pay

particular attention to a steady even pace.

3. EXCESSIVE LIGHT CUTS...may reveal high spots on the

paper/contact wheel and cause chatter. Take a heavier cut and

increase the pace.

4. DEBRIS...lodged between the paper and the drum will leave

chatter. On a belt sander, debris may be adhered to the drum.

Insure the drum is clean and free of debris before placing the

paper on.

5. ABRASIVE QUALITY...may vary. Belt seams can be thicker on

low quality paper and cause chatter. Use only Clarke specied

sandpaper. Store abrasive according to manufacturer’s recom-

mendation.

PROPER CARE OF YOUR MACHINE CAN MINIMIZE

CHATTER AND WAVES.

1. V-BELTS...can cause vibration and chatter if they are of low

quality. Use only belts specied by Clarke.

2. TRUCK AND CASTER WHEELS...with at spots, out-of-round-

ness, or debris adhered to their surface can cause “waves” or

a “chatter effect”. Always clean and inspect all wheels before

starting to sand, and before the nish cut. Replace or true the

wheels if found to be out-of-round. Never allow the sander to

stand on hard surfaces for lengthy periods of time.

3. DUST PICK-UP SHOES...may need adjusted differently for dif-

ferent materials that are to be sanded. An improperly adjusted

shoe will leave trailing debris that will be run over by the wheels

and cause “random waves”.

4. CONTACT WHEELS (DRUMS)...may be out-of-round and

cause “chatter”. Contact your Clarke dealer for assistance to

true or replace the drum.

5. BEARINGS...in the motor, drum, or fan system may become

worn and induce vibration which could cause “chatter”.

6. PULLEYS...that are damaged or severely worn can induce

vibration and cause “chatter”. Contact your Clarke dealer for

assistance.

7. SANDPAPER TENSION...should always be released when the

machine is shut off for 10 minutes or longer to avoid compres-

sion of the drum.

NOTE: Clarke is not responsible for rework of oors that

are unacceptable to the customer. It is your responsibility

to insure your equipment is in proper operating order, and

that you use the right machine for the job.

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American-sanders FloorCrafter Belt Sander User Manual Page 14

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