Whirlpool GU640 Dishwasher User Manual


 
12
Filling the dispenser
1.
If the dispenser cover is closed, open the cover by rotating
the cover latch.
2.
Fill the Main Wash section with detergent. See “How much
detergent to use.”
3.
Fill the Pre-Wash section, if needed.
4.
Close the dispenser cover.
It is normal for the cover to open partially when dispensing
detergent.
NOTE:
Use both sections for cycles with 2 washes. Use only the
covered section for cycles with 1 wash. See the “Cycle Selection
Charts” for more details.
How much detergent to use
The amount of detergent to use depends on the hardness of
your water and the type of detergent. If you use too little,
dishes won’t be clean. If you use too much in soft water,
glassware will etch.
Water hardness can change over a period of time. Find out
your water’s hardness by asking your local water department,
water softener company, or county extension agent.
Different brands of dishwasher detergent have different
amounts of phosphorus for softening water. If you have hard
water and use a detergent with a phosphorous content of
less than 8.7%, you might need to use more detergent, or use
a detergent with a phosphorous content higher than 8.7%.
NOTE:
Fill amounts shown are for standard powdered detergent.
Amounts may vary if you use liquid or concentrated powdered
detergent. Tablet detergents should be placed in the main wash
section of the detergent dispenser with the cover closed. Follow
instructions on the package when using liquid dishwasher
detergent, concentrated powdered detergent or tablet detergent.
Water Hardness Amount of Detergent
Soft to Medium
Hard Water
0 to 6 grains per
gallon
For normally soiled loads
Partially fill the Main Wash
section (6 tsp or 30 g)
Fill the Pre-Wash section
(4 tsp or 20 g)
NOTE:
Add only 2 tsp or 10 g of
detergent to the Pre-Wash section if
dishes are pre-rinsed or the water is
very soft (0 to 2 grains per gallon).
For heavily soiled loads
Partially fill the Main Wash
section (7 tsp or 35 g)
Fill the Pre-Wash section
(4 tsp or 20 g)
Medium to Hard
Water
7 to 12 grains per
gallon
For normal and heavily soiled loads
Partially fill the Main Wash
section (7 tsp or 35 g)
Fill the Pre-Wash section
(4 tsp or 20 g)
Very Hard Water
13 grains per gallon
and above
NOTE:
It might be
necessary to use the
Pots Pans cycle, or a
normal cycle with the
Hi Temp Scrub option
for best wash
performance with
very hard water.
For normal and heavily soiled loads
Fill the Main Wash section
(8 tsp or 40 g)
Fill the Pre-Wash section
(4 tsp or 20 g)
Turn the rinse aid dispenser to a
higher setting. See “Rinse Aid
Dispenser” later in this section.