W-1000-AST Automatic Grease Removal Device


New and updated Big Dipper AST Model!

In order to make it easier to protect sewer systems from grease, we have been working on improving our Big Dipper AST model. Now featuring Advanced Odor Protection, the new Big Dipper AST will be easier to install and maintain.

The Big Dipper W-1000-AST Automatic Grease Removal Device is capable of accepting up to a 100 GPM (6.3 l/s) flow.  The two center modules which comes with digital time control, heater assembly, and mechanized skimming assemble, automatically isolates trapped grease into grease collectors for easy disposal.  The Automatic Solids Transfer feature automatically empties incidental solids out of the solids chamber and down the sewer line.
  • Fully automatic self cleaning cycle. Removes collected grease & oils from tank without any operator assistance. Comes complete with two center lid assemblies with digital control interface and Grease Collector.
  • Constructed of corrosion resistant materials suitable for installation in virtually any location. Attractive sanitary Stainless Steel exterior.
  • Integrated Motor/Grease Outlet/Heater/Lid enables a fast, do-it-yourself unit operation reversal.
  • Compact footprint.
  • Two (2) No-Hub Connectors provided.


Exterior: 304 Stainless Steel, Bright Finish
Interior: Rotationally Molded Polyethylene

Electrical:  230 VAC, 50/60 Hz, 2346 Watts (12.2 Amps)*

Maximum Inlet Flow Rate:  100 GPM (8.16 l/s)

Number of Skimming Wheels:  2

Skimming Rate:  18 Pounds Per Hour (8.16 Kg Per Hour)

Grease Retention Capacity:  314.57 Pounds (142.7 Kg)

Thermaco Big Dipper Model No. W-1000-AST, bright finish type 304 stainless steel exterior, rotationally molded polyethylene interior automatic self-cleaning grease and oil recovery separator(s) for floor mounted or partially recessed installation, rated at 100 gallons per minute (6.3 l/s) peak flow, 314 pounds (142 Kg) of grease capacity and including as an integral part of the unit, two rotating gear hydrophobic wheel assemblies for automatic grease/ oil removal, an integral flow control device, two self-regulating enclosed electric immersion heaters, a vessel vent, an integral gas trap, two integral programmable 24-hour multi-event time controls, field reversible motor locations, field reversible grease/oil sump outlets, quick release stainless steel lid clamps, a gasketted and fully removable 304 stainless steel lid, lift-out filter basket access, an eductor transfer pump controlled by repeat cycle timer, and two separate grease and oils collection containers. Electric assembly shall be tested to comply with pertinent sections of the Standards for Safety ANSI/UL 73 and/or ANSI/UL 1004. Each electric motor equipped with overload protection.

*Electrical Variations

W-1000-AST: 230V 50/60Hz, 2346 Watts (12.2 Amps)
W-1000-AST-E: 230V 50/60Hz, 2346 Watts (12.2 Amps)

Unit may be improperly listed as W1250AST, W-1250AST, W1250-AST, W-1250, W1250, 1250-AST or 1250AST

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