FlexShaft™ Drain Cleaning Machine
999-995-214.10_REV. B
17
Figure 17 – Inspecting/Changing Motor Brushes
Motor Thermal Overload
The motor is equipped with a thermal overload
that turns OFF the motor if it gets too hot or
draws excessive current. To reset the thermal
overload, unplug machine, turn REV/O-OFF/
FOR switch to the O-OFF position and allow
the motor to cool for 15 minutes. Press the
reset button located on the front cover near
the REV/O-OFF/FOR switch
(see Figure 1C)
.
If motor does not start or the thermal over-
load continually trips during normal operation,
the machine should be taken to a RIDGID
Authorized Independent Service Center.
Motor Brush
Inspection/Change
Brushes should be inspected every 6 months
and changed when shorter than ½" (13 mm).
1.
See Cable Assembly Replacement, step
2
to remove cover.
2. Use a screwdriver to remove the brush
cover,
Figure 17
. Remove brush and in-
spect. If there are any signs of damage
or shorter than ½" (13 mm), replace
brushes.
3. Reverse process to reassemble.
4. Place chain knocker in drain and allow
to run 15 minutes in FORWARD and
REVERSE, to break in brushes.
Brush
Covers
SYMPTOM
POSSIBLE REASON
SOLUTION
Cable kinking or
breaking.
Cable turns in one
direction but not the
other.
Ground Fault Circuit
Interrupter (GFCI)
trips when machine
is plugged in.
FlexShaft Machine
wobbles or moves
while cleaning drain.
Motor does not turn
on with switch.
Troubleshooting
Cable assembly is being forced.
Incorrect FlexShaft Machine or chain
knocker used for pipe diameter.
Cable assembly exposed to acid/
corroded.
Cable/sheath worn out.
Cable assembly not properly
supported.
Chain knocker not properly set up/
adjusted.
Faulty REV/O-OFF/FOR switch.
Damaged power cord.
Short circuit in motor.
Faulty Ground Fault Circuit Interrupter
(GFCI).
Moisture in motor, switch box or on
plug.
Ground not level.
GFCI needs to be reset.
Thermal Overload has been tripped.
Do not force cable assembly. Follow
operating instructions.
Use correct FlexShaft Machine or chain
knocker for pipe size.
Clean cable assembly routinely.
Replace worn cable assembly.
Support cable assembly properly, see
instructions.
Properly set up/adjust chain knocker,
see instructions.
Have switch replaced. Take for service.
Have cord replaced. Take for service.
Take for service.
Have cord replaced. Take for service.
Take for service..
Operate in a clear, level and stable
location.
Reset GFCI.
Reset Thermal Overload.
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