Cleaning, Maintenance, And Lubrication; Troubleshooting - Chicago Electric 47840 Owner's Manual & Safety Instructions

Maintenance and Servicing
Procedures not specifically explained in this manual must
be performed only by a qualified technician.
TO PREVENT SERIOUS INJURy FROM AccIDENTAL OPERATION:
Make sure that the Trigger is in the off-position and unplug the tool from its
electrical outlet before performing any procedure in this section.
TO PREVENT SERIOUS INJURy FROM TOOL FAILURE:
Do not use damaged equipment. If abnormal noise or vibration
occurs, have the problem corrected before further use.

cleaning, Maintenance, and Lubrication

1. BEFORE EAcH USE, inspect the general
condition of the tool. Check for:
• loose hardware,
• misalignment or binding of moving parts,
• damaged cord/electrical wiring,
• cracked or broken parts, and
• any other condition that may
affect its safe operation.

Troubleshooting

Problem
Tool will not start. 1. Cord not connected.
2. No power at outlet.
3. Internal damage or wear. (Carbon
Tool operates slowly. 1. Forcing tool to work too fast.
2. Extension cord too long or cord
Performance 1. Carbon brushes worn or damaged.
decreases over time.
2. Blade dull or damaged.
Excessive noise Internal damage or wear. (Carbon
or rattling. brushes or bearings, for example.)
Overheating. 1. Forcing tool to work too fast.
2. Bit dull or damaged.
3. Blocked motor housing vents.
4. Motor being strained by long or
Follow all safety precautions whenever diagnosing or servicing the tool.
Disconnect power supply before service.
Item 47840
Possible causes
brushes or Trigger, for example.)
diameter too small.
small diameter extension cord.
For technical questions, please call 1-800-444-3353.
2. AFTER USE, wipe external surfaces
of the tool with clean cloth.
3. No motor lubrication is required.
Under normal operating conditions, the bearings are
sufficiently lubricated for the life of the machine.
4. When not using the tool for long periods
of time, remove the saw blade.
5. WARNING! If the supply cord of this
power tool is damaged, it must be replaced
only by a qualified service technician.
Likely Solutions
1. Check that cord is plugged in.
2. Check power at outlet. If outlet is unpowered, turn off tool
and check circuit breaker. If breaker is tripped, make sure
circuit is right capacity for tool and circuit has no other loads.
3. Have technician service tool.
1. Allow tool to work at its own rate.
2. Eliminate use of extension cord. If an extension
cord is needed, use one with the proper diameter
for its length and load. See Extension Cords
Grounding
in section on page 5.
1. Have qualified technician replace brushes.
2. Replace Blade as needed.
Have technician service tool.
1. Allow tool to work at its own rate.
2. Keep bits sharp. Replace as needed.
3. Wear ANSI-approved safety goggles and
NIOSH-approved dust mask/respirator while blowing
dust out of motor using compressed air.
4. Eliminate use of extension cord. If an extension
cord is needed, use one with the proper diameter
for its length and load. See Extension Cords
in Grounding section on page 5.
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