KitchenAid KAD-7, KUD01 Component Access, NOTE 1 - CYCLE MODIFICATIONS BASED ON SENSOR INPUTS

COMMON CYCLE TIME CHART NOTES

NOTE 1 – CYCLE MODIFICATIONS BASED ON SENSOR INPUTS

The control monitors food soil and temperature sensors during the first four intervals of the cycle (intervals 45-42) to determine what sensor based cycle modifications are appropriate. The modifica- tions made to the cycle depend on the cycle and options selected as well as the sensor inputs. Note the interval skip arrows and thermal hold temperature changes on the time chart for each version of the cycle.

In addition to being able to modify the cycle itself based on soil sensor input, the APF (Automatic Purge Filtration) wash system allows the control to continuously filter and flush food soil out of the pump during “APF enabled” intervals scattered throughout each cycle and do it without interrupting the cycle (see note 2 on APF).

(a) Anti-Bacteria/Cookware, Pots & Pans/Heavy, Normal, and China Cycles

The control assumes that the worst case cycle (the high soil version) is going to be required until the true soil level is determined. The soil level is determined by counting the number of pressure switch (soil sensor) trips that occur in the first APF interval of the cycle (interval 42). If no trips are detected in interval 42, the control modifies the remainder of the cycle to match the light soil/non-sensor version of the cycle. If one or more trips are detected in interval 42, the control continues with the heavy soil version of the cycle.

Note: Energy Star models have a different light soil/non-sensor version of the Normal cycle than other models (see Model Specifics table to identify Energy Star models).

Note: Models without pressure switches (soil sensors) never get sensor trips and thus always default to the light/non-sensor version of the cycle and never execute APF purges. (See Model Specific Tables to identify models without pressure switches).

Note: The Power Scour/High Temp Scrub option can override or alter the soil-based cycle modifica- tions (see note 14).

(b) Time Saver/Quick CleanUp Cycles

The control does NOT modify the Quick CleanUp/Time Saver cycle based on soil level. In-

stead, it modifies the cycle based on incoming water temperature detected during the first fill

interval of the cycle (interval 45). The control assumes the worst case cycle (Cool First Fill

version) will be required until the end of interval 42. At the end of interval 42, it modifies the

remainder of the cycle based on the inlet water temperature it actually detected in the first fill.

If the water was more than 135° F/57° C it changes to the “Hot First Fill” version of the cycle. If

Inner Feed Tube

Middle Spray

Arm

Water Inlet

Drain Tube

SECTION THREE

COMPONENT ACCESS

COMPONENT LOCATION

Upper
Spray	Active	Control
Arm	Vent	Panel

Electronic

Control Board

(Interconnect

Board Underneath)

Door Latch Assembly

Dispenser

Assembly

Sump and Motor

Assembly

Float

Lower Spray

Arm

Heating

Element

Accumulator

Check Valve (in drain tube)

the water was less than 135° F, it will continue with the “Cool First Fill” version of the cycle. The

“Cool First Fill” version of the cycle basically contains an extra drain and fill prior to the main

wash to increase the initial water temperature for the main wash and reduce the time needed

to heat the water.

Like other cycles, the Quick CleanUp/Time Saver cycle does allow APF purges to occur (in

APF intervals) if pressure switch trips occur, but cycle timing is not modified.

Wash Pump

Soil Sensor

Pressure Switch

Drain Pump Motor

Thermistor

(c) Rinse Only/Quick Rinse Cycles

The control does NOT modify the Rinse Only/Quick Rinse cycle based on sensor inputs. Like

other cycles, it does allow APF purges to occur (in APF intervals) if pressure switch trips occur

but the Rinse Only/Quick Rinse cycle timing itself is not modified based on any sensor inputs.

32

Run Capacitor

Wash Pump Motor

13