Method for dispensing different amounts of detergent in a warewash machine depending on a fill cycle or a rinse cycle

A method of dispensing detergent in a warewash machine including a washtank for holding a supply of wash water supplied during a fill cycle, a rinse water spray head through which water is supplied to the washtank during at least the rinse cycle, and an overflow drain for draining excess water introduced into the washtank, the method comprising the steps of:

• sensing when water is supplied into the washtank;
• determining whether the water is being supplied into the washtank in a fill cycle or a rinse cycle;
• introducing into the washtank during a fill cycle a supply of water sufficient to fill the washtank;
• introducing during the fill cycle a first supply of detergent sufficient to charge the water supplied into the washtank during the fill cycle;
• introducing during the rinse cycle a supply of water sufficient to rinse wares in the warewash machine and draining through the overflow drain the excess water introduced into the washtank;
• and
• supplying into the washtank after each rinse cycle is complete a second supply of detergent sufficient to fully charge the water in the washtank.

A method of dispensing detergent in a warewash machine including a washtank for holding a supply of wash water and a rinse water spray system through which water is supplied in a rinse cycle and in a fill cycle, the method comprising the steps of:

• monitoring the condition of the rinse water spray system to sense when water is supplied to the warewash machine;
• determining whether the water is being supplied in a fill cycle or a rinse cycle, including generating a first electrical signal when a rinse cycle is determined and a second electrical signal when a fill cycle is determined;
• dispensing detergent to the washtank of the warewash machine;
• and
• controlling the amount of detergent dispensed based upon the determination of whether the water is being supplied in a fill cycle or a rinse cycle, including dispensing a first amount of detergent after the rinse cycle is complete in response to the first electrical signal and dispensing a second amount of detergent in response to the second electrical signal.