Bosch SHI 4302 Repair Manual

Contents

H 27Washability / DryingWASHABILITYThere are four factors that play a critical role in Washability: Time, Temperature, Water and Detergent. Itis important when attempting to determine the cause of a Washability complaint that all four factors beconsidered and tested.Time: The duration of the program is accurate (see cycle chart).Temperature: The wash and rinse temperatures are within the desired range (see cycle chart).Water: The unit is filling with the correct amount of water (Section 3, Fig.5-7)Detergent: The detergent is fresh, and not being used in excessive amounts.Please note: Other factors such as clean filters, a properly routed drain hose, water hardness andquality, as well as loading of items will also effect Washability.DRYINGAs part of an energy saving design Bosch Dishwashers do not activate the Heating Element during theDrying cycle. Instead, the dishwasher utilizes a rinse temperature of up to 161° Fahrenheit, and theaddition of Rinse Agent to achieve a quality drying result.HOW THIS SYSTEM FUNCTIONS:During the rinse cycle water is heated to 161° Fahrenheit, this heat is transferred to the items inthe dishwasher where it is absorb and stored.During the drying portion of the cycle all dishwasher items will then radiate the stored heat, thusevaporating any water that has collected on the items surface, burning it off and converting theliquid into steam.This process of “flash drying” is assisted by the release of Rinse Agent into the rinse water. RinseAgent is a water softener that inhibits water from collecting or pooling, allowing it to be easilyevaporated.The remaining steam is vented from the interior through the Steam Vent (Fig. 6-4, item 2) where itis then collected by, and drained from the Condensation Tube (Section 4, Fig. 7-5, item 2).Service note: When confronted with a drying complaint, make sure the Rinse Agent Dispenser is full,and the rinse water temperature is within the desired range. Please remember that theunit will not dry without Rinse Agent.