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©2013 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-ASTPS14000 4

Big Dipper

®

 Internal Strainer (IS) Features

Jog Switch

The Stainless IS Series Big Dipper has a built in Jog 

Switch on the side of the housing which allows for quick 

and easy monitoring of the unit to ensure that it is op-

erating correctly.  By simply pressing the button, the 

motor should activate and the skimming wheel should 

turn normally.  Letting go of the button will disengage 

the motor.  Using this jog switch will not interfere with 

the timer setting of the unit.  

Feedback Provided by Jog Switch

• If the unit is not operating regularly, but will work when the button is pressed, it is likely that the 

timer on the unit is no longer operating and should be replaced.  

• If pressing the button does nothing then there may be a problem with the motor assembly.  

Please contact Thermaco or your local service agent.

Energy Saver Switch

Each Stainless IS Series Big Dipper ships with the 

heating element activated such that the heater oper-

ates only when the motor is running.  Alternatively, the 

unit can be run in Energy Saver Mode which deacti-

vates the heater in the unit.  The switch for changing 

this mode is in the rear of the Center Lid Assembly 

just above the power cord.  To engage Energy Saver 

Mode and deactivate the heater, press and release 

the button once.  The button will stick out further 

than it does when the heater is on.  For continuous 

operation of the heater, please see the underside of 

the center module lid or contact Thermaco or contact 

your local service agent.

Heater On

Energy Saver Mode Off

Heater Off

Energy Saver Mode On

Energy Saver Switch Settings

Big Dipper

®

 Internal Strainer (IS)

System Overview

Summary of Contents for Big Dipper W-250-AST

Page 1: ...00 633 4204 V 336 629 4651 F 336 626 5739 E mail info thermaco com Online www big dipper com Installation Operation Instructions For the Big Dipper W 250 AST Automatic Solids Transfer AST Series Unit...

Page 2: ...Phone 336 629 4651 MNL ASTPS14000 2 Table of Contents Table of Contents AST System Overview 3 AST System Maintenance 5 AST Timer Operation 6 AST System Troubleshooting 7 How To Reverse AST System Ope...

Page 3: ...self cleaning operation activating the skimming wheel at a user set time Only the cleaned water exits the unit and flows into the facility drain lines Incidental food solids less than 1 25 mm in diame...

Page 4: ...mer on the unit is no longer operating and should be replaced If pressing the button does nothing then there may be a problem with the motor assembly Please contact Thermaco or your local service agen...

Page 5: ...cumulated solids Be sure to spray down both the inside and outside surfaces of the strainer assembly E Check the thickness of the grease layer at the top of the unit If there is more than a 1 2 12 mm...

Page 6: ...allation is complete the Big Dipper unit needs to be set for the proper automatic self cleaning operation for the facility The Big Dipper W 250 AST model is equipped with one 1 24 Hour 96 Event time c...

Page 7: ...5 minutes per day There is a Power Indicator Light under the Timer which indicates that Power is reaching the unit If this light is not Red power is not reaching the unit 2 Remove the lid and clean aw...

Page 8: ...er AST System Unit Operation ALWAYS UNPLUG UNIT BEFORE REMOVING LID SYSTEM WILL NOT OPERATE UNLESS CENTER MODULE IS IN PLACE 1 Unlatch the Unit lid Pull the side wings outward 2 Lift the center module...

Page 9: ...sible Assure that outlet pipe has at least a slope of 1 4 per foot 2 cm per meter Use only sweep connections Don t reduce the pipe sizing on the outlet piping Don t install P trap on outlet connection...

Page 10: ...ad height is greater than 6 feet 1 95 m NOTE Drawing for reference only Equipment must be installed in compliance with all applicable laws regu lations and codes including plumbing codes Installation...

Page 11: ...lectrical circuit controlled by a ground fault circuit breaker There is a Power Indicator Light that will glow Red if power is being fed to the unit If this light is off power is not reaching the unit...

Page 12: ...ULLY INSULATED FEMALE CONNECTOR BLACK RED RED INTERCHANGE FULLY INSULATED QUICK CONNECTORS TO CHANGE HEATER OPERATING MODE RED WIRE TO THERMOSTAT GIVES SIMULTANEOUS HEATER MOTOR OPERATION BLACK WIRE T...

Page 13: ...Thermaco Inc 646 Greensboro St Asheboro N C 27204 2548 Phone 336 629 4651 MNL ASTPS14000 13 Big Dipper AST System Electrical Components Safety Switch Part MSS 7 Motor Part M 58 Heater Part H 8 Thermo...

Page 14: ...vers In Place Big Dipper AST Lid Components With Wheel Cover Removed Note W 250 AST system requires one 1 Hinged Skimming Wheel Cover Motor Electrical Cover Timer Cover Grease Collector Strainer Baske...

Page 15: ...h Part MJS 1 Energy Saver Heater Switch Part ESHS 1 Big Dipper AST System Component Identification Big Dipper AST System Component Identification Timer Cover Part MTC 1 Wheel Cover Part MSC 1 Wheel Wi...

Page 16: ...Units THERMOSTAT 1 per unit PART TSTAT 4 INTERNAL FLOW CONTROL PART MFC 25 FOR W 250 AST LID GASKET PART RG 7 WIPER BLADES PART PB 3 W 250 AST requires two 2 WHEEL WIPER ASSEMBLY PART WWA 4 WHEEL DRI...

Page 17: ...s Thermaco shall not be respon sible for damage to products resulting from vault flooding sewer line back up pumping or lift station failure ambient water flow or other sources of water damage This wa...

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