Customer Purge of the Bulk Dispenser Tank
When to Purge the Bulk Dispenser Tank
Only liquid or gel automatic dishwashing detergent can be used in the bulk dispenser. The dispenser must be purged if the consumer puts hand dishwashing detergent or a 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 containing chlorine (like Cascade Pure Rinse Formula) and a liquid dishwasher detergent containing enzymes (like Cascade Complete) 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 low detergent light will 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 (PDW8900)
Top Mount Controls (PDW9700, PDW9900)
SPEED CYCLE | SINGLE RACK WASH | Smart Dispense | DRYING | |
LOW DETERGENT | ||||
COOKWARE | CHINA CYCLE | RINSE ONLY | SENSING | SANITIZED |
NORMAL | PLASTIC CYCLE |
| WASHING | CLEAN |
1.Make sure Pre-wash, Added Heat, and Heated Dry LEDs are off.
2.Press Heated Dry pad 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 (up arrow pad on Top Mount Control models) together for 3 seconds. The
4.Press Start pad one time.
5.Press Normal Wash pad and make sure Pre- wash, Added Heat and Heated Dry LEDs are 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 SmartDispenseTM cap and fill tank with water. Replace cap.
10.Repeat steps 1 through 9 one time.
11.Repeat steps 1 through 6. When the Clean LED illuminates, the system is purged and ready to be refilled with the correct detergent.
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