Solid State Coffee Agitation System

Coffee agitation is accomplished with low pressure air, bubbling up through the coffee in liner. Air enters at the top coffee gauge elbow fittings and forces coffee down out of sight in gauge glasses during the agitation period. Air continues through into the liner connection elbow, and bubbles up from this center fitting. The rich, heavy portion of brew is carried up to the top and thoroughly mixed with weaker top level coffee.

Automatic Program - End of Brew and Delayed Types

At the end of the spray cycle, the air pump turns itself on for about 30 seconds automatical- ly. This automatic agitation program is either built into the solid state spray cycle (brew) timer or is provided by a separate solid state agitation relay on equipment with mechanical timers. Urns with delayed air agitation (Option 43D) have a two minute delay after the end of the brew cycle before the 30 second agitation cycle starts for improved mixing. This delayed program is provided by a separate delay solid state relay. Whenever power to the urn has been off, such as upon installation, the automatic agitation program will begin as soon as the power is turned on. Otherwise, it operates only after the end of spray.

Manual Agitation

At any desired time, holding in the “manual agitation” black push button switch will blend stored coffee.

Note: The plug in the cleanout cap at the top of the coffee gauges must be pushed in completely to avoid air leaks. Gauge glasses are cleaned with a gauge brush by first lifting out the top cap. (A slight twist will release a tightly sealed cap). Be sure to replace the cap properly so that the agitation system can operate.

WARNING: Overfilling coffee liners may damage air pumps. Never overfill liners at any time.


Page 10	American Metal Ware 87710E Coffee Urn