TOUGH-WORKS MM493B, Instruction Manual

16

BD4603

 MM493B

TR

OUBLESHOO

TING 

PROBLEM

PROBLEM CAUSE

SUGGESTED CORRECTIVE ACTION

1. Sanding belt/disc has 

been stored in an incorrect 

environment.
2. Sanding belt/disc has 

been damaged or folded.

1. Ensure sanding accessories are
 stored away from extremely hot or 
 dry temperatures.
2. Store sanding accessories flat – not
 bent or folded.

1. Short circuit in motor 

or loose connections.
2. Low voltage.
3. Incorrect fuses or 

circuit breakers in 

power line.
4. Motor overload.

Machine

vibrates 

excessively.

Sanding Grains

easily rub off 

belt or discs. 

Motor stalls

(resulting in

blown fuses 

or tripped

circuit).

1. Inspect connections on motor for

 loose or shorted terminals or worn 

 insulations.
2. Correct low voltage conditions (for 

example: improper extension cord 

length and/or gauge).
3. Install CORRECT fuses or circuit 

breakers or plug tool into an appropriate

circuit, matched to an appropriate fuse

 or breaker.
4. Reduce the load on the motor.

Motor overheats.

1. Motor overloaded.
2. Extension cord too long 

and of insufficient gauge 

(weight).

1. Reduce load on motor (pressure on 

object being sanded).
2. Utilize an extension cord of appropriate

 gauge and length or plug tool directly into

 outlet.

1. Rubber feet worn, 

mounting hardware loose
2. Workbench or table is

not level
3. Worn bearings

1. Replace the rubber feet, tighten 

mounting hardware.
2. Shim or adjust as need.
3. Have bearings replaced by service 
technician.

Machine slows

when operating.

1. Feed rate too great.

2. Undersized circuit or 

use ofundersized extension 

cord.

1. Reduce the rate at which the workpiece

 is fed into the working area of the tool.

2. Ensure circuit wires or extension cords

 are proper gauge, or eliminate use of 

 extension cords.

Workpiece 

frequently

gets pulled out 

of operator’s 

hands.

1. Not supporting the 

workpiece against the stop.
2. Attempting to sand 

(unaided) a workpiece that

 is too small.

1. Use the platen (backstop) or miter 

gauge to support the workpiece.
2. Use another hand tool or jig to grasp

 or hold the workpiece.