Common Electrical Defects-Cause And Troubleshooting Guide; Motor Will Not Run - Kirby G5 Service Manual

SECTION 4 -120 VT
4.4 Common Electrical Defects - Cause
and Troubleshooting Guide
A troubleshooting video and this service
manual are available through the Cus­
tomer Service Center or the International
Warehouse in your location.

4.4.1. Motor Will Not Run

The most common electrical defect is
that the motor will not run, almost al­
ways because there is an open circuit
point in the cleaner's electrical system.
To check for an open circuit after the
power supply and power cord have
been eliminated as a cause of the prob­
lem:
1. Unplug the cleaner and remove the top
cover.
2. Visually inspect the cleaner. Look for
loose or missing wires, loose motor
brushes, or brushes that are jammed in
the holder and not making good
contact with the armature.
3. In the following sequence: put the
cleaner in neutral, carefully plug in the
cord, release and attach the nozzle to
the front, release and attach the bag to
the exhaust port, depress the rear on­
off switch one time only. The cleaner
TROUBLESHOOTING
Equipment
Definition
Procedure
25
should come on. If it does not come
on, do not depress the rear on-off
switch and do not remove the nozzle
or bag.
Unplug the cord. The cleaner should
be in the on condition and ready for
the Open Circuit Isolation Check.
Ohm-meter, 0.1 ohm accuracy or bet­
ter (Radio Shack catalog #22-216 or
equivalent).
Continuity is defined as an ohm-meter
reading less than 50 ohms.
Refer to Figure 1 and Figure 2 for a
pictorial view of the GS circuit and
block diagram of the circuit. When the
motor works properly, the circuit
should show continuity from point 1 to
point 12. The most probable reason for
a motor that will not run is that there is
an incomplete circuit (open circuit)
which will test as no continuity at the
defect point.
The following Chart 4.4.1 gives a se­
quence for locating this open circuit
point.
Issued 1/97