Kenmore 808353 - Manual (Page 6)

A. WATER, DETERGENT AND THE AUTOMATIC
DISHWASHER
Water
Water is a рптагу ingredient in dewrrmningвиЮтвьс dishwashing resu/is The minerais in water, when in sufficient
quantity, wilf cause spotting, filming and the possible discoloration of sonne metals. The minerals which account for
the greatest difficulty are calcium and magnesium These minerals determine the hardness of the water
Thé’definition of hard water varies’somewhat However’ mosi'aIjthorîtres”3grëe with the following sca’ie
0 10 4 grains hardness per gallon - soft water
4 to 8 grains hardness per gallon ^ medium water
8
10 12 grains hardness per gallon - hard water
over 12 grains hardness per gallon - very hard water
Automatic dishwashing results are wsibiy affected when calcium and magnesium are present in_a concentr^atron of
eight grains per gallon or more As their concentration increases, the problems of spotting and filming can increase
proportionately
When spotting and filmirtg are caused by hard water conditions, they will normally be evident on glassware and table­
ware (silverware) within a short period of time Over a longer period of lime, hard water film can build up on the racks,
walls, spray mechanism and heating element of the dishwasher itself. The development of hard water film on the
dishwasher may cause additional problems and reduce the efficiency of the dishwâsher due to the build-up of the lime
deposits on the pump area, drain hoses, etc
If water supplied to the dishwasher is less than 10 grains hard, spotting and filming can be controlled satisfactorily by
the amounl of detergent used, in a properly functioning dishwasher
When correct amounts of detergent are used for the availing water conditions, the water softening ingredients wilt
also dissolve calcium and magnesium which have deposited on disfiware surfaces iri preceding dishwashing cycles
medium end hard warer conditions, the amount of detergent used should be increased We recommend filling the
detergent cups under these conditions. In some very hard water conditions, it may also be advisable to place addi­
tional detergent in the dishwasher tor the main wash cycle
When the total hardness of the water exceeds 12 grains per gallon, it may be advisable to install a water conditioning
unit to remove the catcium and magnesium from the water, in order to insure continuous excellent automatic dish­
washing results Also keep in mind that when a customer already has a water softener that it may not be function­
ing correctly or it may not be able to handle the capacity needed for the size of the household
REMOVAL AND CONTROL OF HARD WATER FILM
A 5% Of 6% acidic solution, such as vinegar, will remove hard water film and may be used to determine its presence
on glassware Place a small amount of vinegar in a bowl and allow filmed glassware to soak in the vinegar for 3 to 10
minutes Remove from vinegar, rinse and blot dry If the film present was due to hard water, it will have been re­
moved
The following "home ’ method may be used to remove hard water film from glassware and the dishwasher: Allow
dishwasher to fill for the main wash cycle; place two cups vinegar in the water and allow machine to complete the
entire cycle Do not place metalware, pSasticware, silverware, cutlery, or detergent in dishwasher when performing
this film stripping process
The Automatic Dishwasher
The automatic dishwasher is blamed for marry problems over which it exercises no control A properly functioning
dishwasher, properly loaded, using the recommended amount of a good dishwasher detergent and havtng the speci­
fied water charge will do an excellent job of cleaning
Some of the problems that do arise and are caused by conditions other than functional characteristics of tne dish­
washer ate as follows;