Ingersoll-Rand EL 24V DC Series, Maintenance Information

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TRANSFORMER
TRANSFORMER VOLTAGE
RED
RED
BLUE
RED
RED
WHITE
BLACK
TRIGGER SW
SCREWDRIVER
CONTROLLER
BRAKE SW
MOTOR
MOTOR VOLTAGE
M
BLUE
FORWARD/REVERSE SW
CONTROL BASE ASSEMBLY
YELLOW
YELLOW
1 1
2
1
2
1 2
ON
2
ON
5
5
3
4
6 7
(Dwg. TPD1817)
Troubleshooting Guide
Trouble Probable Cause Solution
Screwdriver fails to rotate
(forward or reverse)
Is there power to the tool?
Defective Power Cord Assembly. Replace the Power Cord
Assembly if necessary.
No power from the Controller. Repair or replace
(see Controller Service Manual)
Does the Trigger Switch click when the Trigger
is depressed?
Defective Trigger Switch. Replace the Trigger Switch.
Does the Trigger Switch turn on power to the
Motor?
Trigger pad Worn. Replace the Trigger.
Can the bit be turned by hand when the tool
is unplugged?
Planetary gearing defective. Replace the Planet Gears,
Spindle Assembly and Gear Head Assembly.
Clutch defective. Repair or replace the Clutch.
Does the tool operate properly when bumped
and jiggled?
Defective power cord. Replace the Power Cord Assembly.
Forward/Reverse Switch defective. Replace the Forward/
Reverse Switch.
Defective solder connection. Check all solder connections;
resolder where necessary.
Defective Armature. Replace the Motor Assembly.
Brush contact defective. Replace the Brush Assembly.
Does brush wear appear normal?
Worn or defective Brushes. Replace the Brush Assemblies.
Defective Commutator. Replace the Armature.
Does motor appear to be in good condition?
Carbon buildup or dirt on Armature. Clean the Armature
using a good electrical contact cleaner and blow dry.
Screwdriver runs in one
direction but not the other
Are wire leads in good condition and properly
soldered?
Defective solder connections. Resolder and rewire if
necessary.
Does Reverse Switch operate properly? Defective Reverse Switch. Replace it.
Bit does not rotate but motor
hums.
When gears are removed, will the motor rotate?
Is planetary gearing smooth when bit is rotated
by hand?
Armature is in contact with the magnets. Replace the
motor.
Foreign material in the motor. Clean the motor.
Bearing has failed. Replace the Spindle Assembly.
Gears are worn or damaged. Replace any defective gearing.
Clutch Assembly is worn. Replace damaged or worn parts.