GE PDW8900 Series Technical Service Manual page 17

When
to
Purge the Bulk Dispenser Tank
Only liquid or gel automatic dishwoshing detergent
can be used in the bulk dispenser. The dispenser
must be purged if the consumer puts hand
dishwoshing detergent or o rinse agent in the
dispenser. These products will produce copious
amounts of suds, and water leaks will result every
time the dishwasher is run until the tank is emptied.
The dishwasher must also be purged if a liquid
dishwasher detergent contoining chlorine
(like Cascode Pure Rinse Formula) and a liquid
dishwasher detergent contoining enzymes llike
Cascade Complete1 have been mixed in the
dispenser. When this happens, the chlorine destroys
the enzymes resulting in poor wash performance.
You can tell if the detergent contains chlorine
or enzymes by reading the content label on the
container.
A chemical reaction also takes place between the
chlorine detergent and the enzyme detergent which
causes the two liquids to coagulate and buildup
around the detergent level sensor. This build up may
prohibit the sensor from sending the low detergent
signal to the control board and the law detergent
lightwill not be illuminated when the bulk dispenser
is empty.
Consumer Purge Cycle
The consumer must enter Service Mode to activate
the purge cycle. The purge cycle fills the dishwasher
for 57 seconds, then energizes the dispenser pump
[instead of the main motor) continuously to drain
the bulk dispenser tank.
The purge cycle deselects all other options and
runs for 65 minutes. The consumer should run the
purge cycle 3 times, filling the dispenser tank with
water for the second and third cycles. Total time
is
approximately 3 hours.
Follow these steps carefully to have a successful
purge run.
Front Mount Controls
IPDW89001
Top Mount Controls
(PDW9700, POW99001
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1 . Moke sure Pre-wash. Added Heat, and Heated
Dry LEDs are off.
2. Press Heated Dry pod and Cookware pad
(down arrow pad on Top Mount Control models)
together for
3
seconds. All LEDs illuminate.
3. Press Added Heat pad and Normal pad lup
arrow pad on Top Mount Control models)
together for 3 seconds. The Anti-bacterial LED
illuminates.
4. Press Start pad one time
5. Press Normal Wash pad and make sure Pre-
wash, Added Heat and Heated Dry LEDs ore off.
6. Press Start pad. Dishwasher will run a complete
cycle without the main motor running. Cycle is
complete when the clean light illuminates. This
should take approximately 60 minutes.
7. Open door and wipe up the excess detergent
from the door and tub.
8. Pour water on the door and tub where there is
detergent residue.
9. Remove SmortDispenseTM cap and fill tank with
water. Reploce cap.
10. Repeat steps 1 through 9 one time.
1 1 . Repeat steps 1 through 6. When the Clean LED
illuminates, the system is purged and ready to
be refilled with the correct detergent.