GE PDW8900 Series Technical Service Manual page 23
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Also See for PDW8900 Series:
- Owner's manual (48 pages) ,
- Quick start (2 pages) ,
- Technical service manual (37 pages)
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Drain System
The drain system consists of the
following
components:
Auxiliary drain pump (includes motor and one-
way check valve)
Drain tube
.
Check valve (in line with drain tubel
Drain hose
The inlet cover prevents large particles from entering
the sump. Water entering the drain pump is not
filtered by the fine filter (metal) or by the sump filter
(plastic). The drain pump is mounted on the sump
and contains a one-way check valve. The drain
pump is controlled by the control module and con be
activated using Service Mode.
Auxiliary Drain Pump strip Circuit
DRAIN PUMP
RED
m
WHITE
J2-8
a
The drain pump utilizes a 120V AC motor. The motor
should read approximately 30
a.
IMPORTANT: The drain system of this dishwasher
requires either a high drain loop or an air gap.
Installations without either a high drain loop or an
air gap will not perform properly.
Air
Gap
High Drain
Loop
Smart
Fill
System
The Smart Fill system consists
of
o
new silent
fill
hose design and electronicly controlled cavitation
,
- ,
sensing (adaptive filil.
The new fill hose design uses a rigid plastic tube
with rubber over mold at both ends. This smaller
diameter reduces water flow rate and fill noise. The
required water line pressure is still 20 to 120 psi.
The cavitation sensing controls the amount of water
~
1 .
for each fill. The dishwasher fills for 57 seconds,
then the pump motor starts. The load on the motor
changes as water enters and exits the sump. The
electronic control monitors this change as motor
current fluctuation and continues to fill the tub until
the fluctuations are stable, assuring the sump is full.
Note:
The maximum amount of time the electronic
control will energize the water valve is 95 seconds.
During a normal wash cycle, the water level in the
tub will cover the sump screen or bejust to the rear
edge of the heater bracket. The dishwasher will fill
with approximately 1.2 gal. of water.
Depending on the wosh cycle selection, a complete
wosh cycle will use between approximately 2.5 gal.
(Rinse Only1 to 10.9 gal. (Cookware
-
heavy soil level).
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