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Big Dipper W-250-AST Installation & Operation Manual

40000 series, automatic solids transfer (ast) units
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Installation & Operation Instructions
For Big Dipper 40000 Series
Automatic Solids Transfer (AST) Units
Models W-250-AST, W-750-AST and W-1250-AST
(Including 230 VAC Units)
A Big Dipper W-750-AST in a
Basement Location
Kitchen Drainage Piping
*
Please consult Thermaco, Inc. for specific models
tested, certified and/or listed by these organizations.
Complies with C22.2
No. 68-09 & UL 73(9th Ed.)
Copyright ©2015 Big Dipper
Thermaco, Inc. • P.O. Box 2548 • Asheboro, NC 27204
®
Toll Free: (800) 633-4204 • V: (336) 629-4651 • F: (336) 626-5739
info@thermaco.com • www.big-dipper.com
ADJ
Part# MNL-AST40000

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Summary of Contents for Big Dipper W-250-AST

  • Page 1 Installation & Operation Instructions For Big Dipper 40000 Series Automatic Solids Transfer (AST) Units Models W-250-AST, W-750-AST and W-1250-AST (Including 230 VAC Units) A Big Dipper W-750-AST in a Basement Location Kitchen Drainage Piping Please consult Thermaco, Inc. for specific models tested, certified and/or listed by these organizations.

  • Page 2: Table Of Contents

    40000 Series Table of Contents Table of Contents AST System Overview AST System Maintenance AST Digital Control Operation AST Function Operation AST System Troubleshooting How To Reverse AST System Operation Plumbing Installation Electrical Installation AST System Wiring Diagram AST Component Identification AST Replacement Parts Limited Warranty ©2015 Thermaco, Inc.

  • Page 3: Ast System Overview

    Only the “cleaned” water exits the unit and flows into the facility drain lines. Incidental food solids less than 1” (25 mm) in diameter (W-250-AST) and 1.5” (38 mm) in diam- eter (W-750-AST & W-1250-AST) are separated and flushed out of the system automatically by the Automatic Solids Transfer component.

  • Page 4: Ast System Maintenance

    (A) Empty the clear plastic grease/oils collection container (located beside the unit) prior to its becoming full once each day. The Big Dipper recovers grease and oil virtually water-free so that they can be recycled. The collector container should be washed periodically so as to maintain the easy viewing translucent characteristic of the collector.

  • Page 5: Ast Digital Control Operation

    40000 Series Big Dipper AST System ® Digital Control Operation Digital Control Operation (Default Modes) Moderate Setting: Timed Skimming Default Light Setting: Heavy Setting: Recommended for Through the “User Interface” three Recommended for Recommended for Moderate Grease Output levels of skimming may be selected in...
  • Page 6 Digital Control Operation (Extreme Modes) Extreme Operation For Food Service Operations which produce more grease and need additional run-time, the 40000 Series Big Dipper provides additional modes for extreme operation. In order to access these modes: 1. Remove power from CLA by unplugging unit or lifting it to disengage the safety switch (found on REVISIONS underside of the back of assembly).

  • Page 7: Ast Function Operation

    Automatic Solids Transfer (AST) Function Operation The Automatic Solids Transfer feature in Big Dipper AST models function to flush solids of a certain size out of the unit and into the sewer collection system where it can be dealt with properly, while not interfering with the regular separation and isolation of free floating fats, oils, and grease.

  • Page 8: Ast System Troubleshooting

    Big Dipper for the application. (3) If excessive sediment has collected on the bottom Excessive water observed in the grease collection of the unit, clean the unit as described in item 3 in “Big...

  • Page 9: How To Reverse Ast System Operation

    AST System Unit Operation ® *ALWAYS UNPLUG UNIT BEFORE REMOVING LID *SYSTEM WILL NOT OPERATE UNLESS CENTER MODULE IS IN PLACE *Note: W-250-AST & W-750-AST have one (1) module. W-1250-AST has two (2) modules. Grease Outlet 1) Unlatch the Unit lid. Pull the 2) Lift the center module up off of side wings outward.

  • Page 10: Plumbing Installation

    1/2 the diameter of the system’s outlet connection height above the strainer access cover is enough must be present as close as possible to the Big Dipper to remove the strainer basket assembly. outlet to prevent possible siphonage problems. Failure to provide a vent for the system voids Thermaco’s...
  • Page 11 Big Dipper AST System ® Plumbing Installation Sometimes space restrictions require the installation of Big Dipper units in basement locations where significant head pressure becomes a factor. The Big Dipper VFCA Vented Flow Control module provides an option for use ®...
  • Page 12 If the flow control is installed more than 2 feet below the lowest fixture consult the manufacturer for a more restrictive disc. Remove the rubber flow control from the Big Dipper system. Note: This equipment must be installed to comply with all applicable national, state, and local plumbing codes for your area.

  • Page 13: Electrical Installation

    ® Big Dipper Automatic Solids Transfer (AST) Models The Big Dipper W-250-AST & W-750-AST models are equipped with one (1) Push Button Digital Time Controller while the W-1250-AST model is equipped with two (2) Push Button Digital Time Controllers. The push button control is located under the hinged lid of the motor enclosure on top of the lid of Big Dipper (See Digital Timer Operation Instructions).

  • Page 14: Ast System Wiring Diagram

    40000 Series Big Dipper AST System ® Wiring Diagram Wiring Diagram For Big Dipper Models: W-250-AST and W-750-AST REVISION HISTORY GROUND WIRE ATTACHED ZONE REV DESCRIPTION DATE APPROVED TO HEATER GREEN (GREEN/YELLOW) HEATER RING TERMINALS TO GROUND STUD ON MOTOR MOUNT BRACKET...
  • Page 15 40000 Series Big Dipper AST System ® Wiring Diagram Wiring Diagrams for Big Dipper Model: W-1250-AST Center Module #1: AST Control REVISION HISTORY GROUND WIRE ATTACHED ZONE REV DESCRIPTION DATE APPROVED TO HEATER GREEN (GREEN/YELLOW) HEATER RING TERMINALS TO GROUND STUD...

  • Page 16: Ast Component Identification

    40000 Series Big Dipper AST System ® Electrical Components Control Assembly Part# PCBA-2 Consisting of 1- Printed Circuit Board 3-Thermistor 2- User Interface Assembly (Part of PCBA-2) 3- Thermistor w/Wiring 4- Ribbon Cable w/Connectors 4-Ribbon Cable (Part of PCBA-2) 2-User Interface...
  • Page 17 40000 Series Big Dipper AST System ® Component Identification Big Dipper AST System Component Identification ® Rear Electrical Enclosure Assembly Part# REEA-1 Control Cover Part# MTC-1 Wheel Cover Part# MSC-1 Front Electrical Enclosure Digital Assembly Part# FEEA-1 Wheel Wiper Assembly...

  • Page 18: Ast Replacement Parts

    PART# RG-7 WHEEL WIPER ASSEMBLY* PART# WWA-4 WHEEL DRIVE SPROCKET* PART# WDS-3 GREASE/OILS COLLECTION CONTAINER* FOR MODEL W-250-AST, USE PART# GC-7 SKIMMING WHEEL ASSEMBLY* FOR MODEL W-750-AST, USE PART# GC-7 PART# PDA-3 FOR MODEL W-1250-AST, USE PART# GC-6 (2) SAFETY SWITCH...

  • Page 19: Limited Warranty

    40000 Series Big Dipper Limited Warranty & Remedy ® Thermaco, Inc. warrants to the original user that the products manufactured by it delivered with this warranty shall be free from material defects in workmanship and materials for a period of 12 months from the date of invoice to the distributor (if sold by an authorized Thermaco distributor) or the date of invoice to the purchaser (if sold directly by Thermaco, Inc.), but in no event longer than 15 months from date of shipment from Thermaco’s production facility.

This manual is also suitable for:

W-750-astW-1250-ast

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