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BI-META
CAM i
FIGURE46
FIGURE47
Dispensers
A. Detergent DL_penser- B/-Metal Operated
The Bi-Metal trigger usedto releasethe detergent cup locking cam is made of two different metals which arebonded
together The expansion rates of these metals are considerably different,. The trigger bendswhen heated and releases
the Locking cam, (See Figures 46 and 47.
The Bi-Metal trigger isa low voltage device It isplaced in series with the dishwasher heating element Current flowing
through the heating elementisdirected bythe timer through the trigger mechanism either during or immediately after
the fill period for the second wash The current heats the trigger and the cam is released,
Severa{ different circuits have beenused with these devices Always refer to the wiring diagram for tile model you
are servicing in all cases,power istaken from a timer terminal to one terminal of the Bi-Metal The other Bi-Metat
terminal is connected to the red heater lead, usually at the timer The timer switch that normally supplies the heater
power must be open while detergent cup operation takes place
45