Haier GE DDT700S N0 Series Technical Service Manual page 60

• The wash pump turns on, water flows to the
lower spray arm, and the check ball blocks
the rear port or upper spray conduit. The
bypass allows low pressure and low volume
water to enter the main conduit, filling the
conduit with no actual spray from the mid and
upper wash components.
Upper Spray System
• The wash pump cycles off for one second.
Water that is in the rear conduit forces the
check ball to the lower spray port.
Lower Spray
Arm
– 60 –
• The wash pump cycles on, and water
pressure keeps the check ball positioned to
block water entering the lower spray arm.
Water flows to the mid spray arm and upper
sprayer.
• The wash pump cycles off for eight seconds.
The water pressure in the spray arms
equalizes, and the check ball is in the bottom
or home position.
• When the wash pump starts, the check ball
again seals the rear port or upper spray arms.
The cycle repeats.