(OBS) Page 19 of 20
Troubleshooting
Chart
Condition
Corrective
Action
Poor Cable Connection
Faulty micro switch
Faulty main power switch
Faulty control board
Blown
fuse
breaker has tripped
drive handle
switch
Faulty relay
Carbon motor brushes
need to be replaced
Circuit breaker has tripped
actuator
Faulty actuator
circuit
breaker
or actuator
Faulty control panel
Faulty control board
Deck stays on floor after motor after motor
Deck height fluctuates excessively
Clean battery cable
clamps of any corrosion and tighten test
voltage
at
points A
to
B
should
be
from
34
to
38
VDC.
Test voltage
at
points to
B should be from
34
to
38
VDC.
If
there is no voltage check switch for continuity. Adjust or replace
as
needed
With the main power switch turned on, test voltage at points B to
D
should be from
34
to
38
VDC.
If
there is no voltage remove
leads and check switch for
Replace
if
necessary
voltage at
L6
to
K7
should be from 34 to
38
VDC.
If
the
voltage is
good
at
L6 to
but the machine still won't
respond,
all the tests
above have been done, replace
the
control board.
Replace
Reset circuit breaker.
(N)
Unplug connector coming from main handle assembly. Squeeze
handle and test for continuity at handle end of connector E.
Adjust or replace switch
as
needed
.
See
page
13
15
for
exploded
view of switch cover
and drive control assemblies
With main power on, pad
in operating position
and
drive handle
squeezed:
Test
voltage
at
points
F
to and
F
to B
should be
from
34
to
38
VDC. When
the relay working
it
should make a
clicking noise
the
handle squeezed. Replace relay
the
test
measure properly and
the pad
motor still does
not run.
If
the test voltages are not
34
to
38V DC, check wiring
and connections at
D and B.
When the brush wear indicator light comes
on
it
is
necessary
to
put
a
new
set
of
carbon motor brushes
in.
Continuing to run the machine
until the brushes wear away completely
will cause motor damage.
Reset circuit breaker (M)
Check connections
J2
and
K4
on control board
along
with all other connections to actuator.
With
the
main
switch turned on
and
the
pad
switch depressed, test
at
K4
to
should
be from
34
to
38
VDC.
If
the voltage is good at
K4
to
but the actuator
still
is not operating it
need to be repaired or replaced.
Unplug
the connector at J on the control board. Test
J
(coming
from control panel) for continuity when pad switch is pressed.
Replace control panel
if
Test voltage
at
L6
to
be from 34
to
38
VDC.
If
the
voltage
is good
at
to
but
the lift mechanism still won't
respond,
all the tests above have been done, replace the control
board.
Check for worn out pad.
Check for worn
out pad.
Rev.1
19
