Opening The Lid; Lid Switch Failure - Maytag LAT2300 Service Manual

Plunger
1~
Opening The Lid
LID OPEN
Lid Closed
LID CLOSED
The lid switch/unbalance lever will
push the actuator button of the lid
switch in moving it from the normally
open position to the closed position.
Electrical power from the line will be
passed through the closed switch con-
tacts to the common terminal of the
double throw check switch.
With the lid closed the actuator button
of the check switch will not be in
contact with the lid switch/unbalance
lever. The check switch will be in its
normal position with the common made
to the normally closed contact. Power
from line 1 is therefore connected to
timer terminal 88 (input to timer).
As the lid of the washer is raised, the
lid switch/unbalance lever releases the
button of the lid switch opening the con-
tacts. Power to the check switch
common is interrupted.
As the lid is further raised the lid
switch/unbalance lever will contact and
actuate the button of the check switch.
Even though the check switch contacts
will physically be moved, no electrical
action will take place because the lid
switch will have previously broken the
circuit.
When the lid is closed the lid switch and
the check switch are in series with the
line power input to the timer. When the
lid is opened, first the lid switch then
the check switch will open to interrupt
the line power input to the timer.
Lid Switch Failure
If the lid switch should fail in the open
position (no contact), the washer will
simply be non-operative (dead). While
rare, a switch can stick (weld) in the
closed position. This is unacceptable
because a washer cannot be allowed to
operate with an open lid particularly in
16001145
SECTION 3. WASHER - SERVICE PROCEDURES
3-16
©1994 Maytag Corporation