©2001 Thermaco, Inc. All rights reserved • Patented/Patents Pending • Specifications subject to change without notice
Thermaco, Inc. • 646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone (336) 629-4651
MNL-AST 4
®
AST
Solids
Removal
Chamber
• Kitchen, food-processing plant or other food waste bearing flows enter the solids removal
chamber. Wastes immediately separate into floating and non-floating (heavier than water)
components. While the solids are being collected in the solids removal chamber, the free-
floating grease and oils are trapped in the grease/oil retention area of the Big Dipper AST's
stainless steel tank. Clean water is allowed to exit the unit.
• Periodically, food scraps and other solid waste are shredded by a macerating pump and re-
entered into the outlet flow just after the Big Dipper AST automatic grease/oils removal
chamber.
• At a preset time of day the time controller activates the system to begin the automatic grease/
oil skimming operation. At this time the heater(s) activates to liquefy any congealed grease/
oil in the system. The Big Dipper motor begins to operate, skimming the grease & oils out and
depositing them into the grease collection container.
Inlet Flow
Shredded Solids
Outlet Flow
Outlet Effluent
Flow
Recovered
Grease/Oils
Collection
Container
Automatic Grease/Oils
Recovery Chamber
Operation Flow Chart
Macerating
Pump