Danby DDW1802 - 14352 Service Manual

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COMPOruEruT
OPERATION
AND
REPAIR
SAFETY PRECATIONS
Always
turn
off the
electric
power
supply
before servicing
any
electrical
component,
making
ohmmeter checks,
or replacing
any
parts.
All voltage
checks
should
be
made
with a voltmeter
having
a full scale
range
of
130 volts
or higher.
After
service is
completed,
be
sure all
safety-grounding
circuits
are complete,
all
electrical
connections
are secure,
and
all
access
panels
are in
place.
TIMER
With
the timer,
user selects
the various
cleaning
cycles of the
dishwasher.
The
timer
controls
all
the electrical functions
of
the dishwasher
in
all stages
of each
cycle. All functions
can be traced
on
the chart. Diagram
provided
in this
service
manual.
To
Test The
Timer
lf the
timer is
suspected
of faulty operation,
reference
timer chart and
electrical
schematic
diagram
and
proceed
as follows:
1. lndex
the timer
to the first increment
of
the
normal
cycle,
which is
a drain
period.
2. lf
the
pump
motor fails
to operate
during
the first
cycle increment,
check
for
power
at the
pump
motor
connector
block, if
there
is no
power
check
the door
latch
switch,
if
there is
power,
check
the
pump
motor as
described in
this
section.
3. lf
the
pump
motor
does
operate, let
the timer motor
advance the
timer
through
the drain increment
to determine
if
the timer motor and
drive train
are fully
operative.
4. Let
the
timer advance,
or index
it forward
to the
portion
of the
cycle in
question.
5.
lf
a
component
controlled
by the timer fails
to function as
the timer
advances
through
the cycle,
check for voltage
at the timer terminals. lf the
check voltage
is
supplied to
the component,
check
the component
as described
in this
section.
Continuity
through
timer
contacts,
other controls,
and wires can
also
be
checked
with
an ohmmeter
with
electrical
power
disconnected.
lf
the timers
contacts fail
to close in
the sequence
shown on the
timer
chart
are
burned
(have
resistance
measurable
with
an ohmmeter),
or
if
timer
does
not
advance automatically,
replace
the timer.
To
Replace Timer
1.
Disconnect
dishwasher
from
electrical supply.
2. Remove
the
timer knob.