Big Dipper 51000 Series Installation instructions

Copyright ©2020 Big Dipper®Thermaco, Inc. • P.O. Box 2548 • Asheboro, NC 27204
Toll Free: [phone] • V: [phone] • F: [phone]
[email protected] • www.big-dipper.com
Installation & Operation Instructions
For Big Dipper 51000 Series
with Advanced Maintenance Assistant
Models W-250-AST, W-750-AST, and W-1000-AST
(Including 230 VAC Units)
A Big Dipper W-1000-AST
Part# MNL-AST51000
AFE
1
1
2
2
3
3
4
4
A A
B B
C C
D D

THIS DRAWING CONTAINS PROPRIETARY AND PATENTED MATERIAL. THIS DRAWING MAY NOT BE REPRODUCED IN WHOLE OR PART WITHOUT
WRITTEN CONSENT FROM THERMACO, INC. POSSESSION OF THIS DRAWING DOES NOT CONSTITUTE THE RIGHT TO MANUFACTURE.
POSSESSION OF THIS DRAWING DOES CONSTITUTE AN IMPLIED NONDISCLOSURE AGREEMENT BETWEEN THERMACO, INC. AND THE HOLDER OF
THIS DRAWING. DO NOT DESTROY THIS DRAWING, IT IS THE SOLE PROPERTY OF THERMACO, INC. AND MUST BE RETURNED UPON REQUEST.
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
646 GREENSBORO STREET
PO BOX 2548, ASHEBORO, NC 27203
VOICE 336-629-4651 FAX [phone]
Decimals
.XX +/- .03
.XXX +/- .015
Unless otherwise specified
Dimensions are in inches
Tolerances
Angular
+/- 1°
CHECKED SIZE REV. NO. DWG NO.
PART NO.
C
SCALE RELEASE DATE SHEET OF
ENGINEERING
DRAWN DATE
THIRD ANG LE PRO JECTION
Complies with C22.2
No. 68-09 & UL 73(9th Ed.)
* Please consult Thermaco, Inc. for specic models
tested, certied and/or listed by these organizations.
®

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 2
51K with Advanced Maintenance Assistant
Table of Contents
Table of Contents
Advanced Maintenance Assistant Overview 3
Caring for Your Advanced Maintenance Assistant 4
Advanced Maintenance Assistant Digital
Control Operation 5
Advanced Maintenance Assistant Function Operation 6
Advanced Maintenance Assistant Troubleshooting 7
How To Reverse Advanced Maintenance Assistant
Operation 8
Plumbing Installation 9
Vented Flow Control Installation 12
Electrical Installation 13
Safety Instructions 14
Grounding Instructions 15
Advanced Maintenance Assistant Wiring Diagram 16
Advanced Maintenance Assistant Component
Identication        19
Advanced Maintenance Assistant Replacement Parts 22

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 3
51K with Advanced Maintenance Assistant
Big Dipper®Advanced Maintenance Assistant Overview
The Thermaco, Inc. Big Dipper® Automatic Grease and Oils Removal System removes free-oating
grease & oils from kitchen drain water ows. As most food service facility managers already know, grease
buildup within a building’s plumbing drainage system is a major cause of problems due to drain line block-
ages. These problems jeopardize normal operations as well as create health and safety hazards within
the facility itself.
The proper installation of a Big Dipper System can reduce or eliminate grease problems. Use of the Big
Dipper assures minimization and/or elimination of costly sewer surcharges and nes through efcient
separation and removal of free-oating grease & oils. In addition, the Big Dipper also helps reduce or
eliminate pumping and disposal costs associated with conventional grease traps or interceptors. The
recovered grease & oils are substantially water-free and are suitable for recycling by local rendering and/
or biodiesel companies.
The Big Dipper system is an automatic grease removal device. As greasy kitchen efuent drains from
kitchen xtures, the unit traps the grease & oils. These separate from the efuent and rise to the surface
of the separator tank. The unit automatically skims the trapped grease & oils and transfers the grease &
oils to a collection container. A digital control maintains the self cleaning operation, activating the skim-
ming wheel periodically based on the setting chosen. Only the “cleaned” water and incidental solids exits
the unit and ows into the facility drain lines.
Incidental food solids less than 1” (25 mm) in diameter are separated and ushed out of the system au-
tomatically by the Advanced Maintenance Assistant. These incidental solids are typical of those that are
rinsed off of plates before going to a dishwasher. The Centrifugal Pump of the Advanced Maintenance
Assistant is not designed to handle non-food products such as plastic, rubber, or metal items.
The Big Dipper system’s compact footprint allows installation directly at the source where grease prob-
lems originate. The system design also allows easy maintenance and operation requiring only a minimal
amount of daily and weekly maintenance to maintain peak operating performance.
The Big Dipper system design allows for maximum installation exibility. Reversing the system operation
is a simple as rotating the center module of the unit.
Hydromechanical grease interceptors (formerly referred to
as grease traps), grease separators, automatic recovery
units, grease removal devices and other similar plumbing
devices receiving kitchen ows from sinks, oor drains,
woks and other food bearing sources may generate
odors. The 51k Series Big Dipper has been designed
to seal in odors and prevent them from leaking into the
kitchen through the tank lids. It does not prevent odors
related to the rest of the plumbing system including but
not limited to: open oor drains, air gaps, external solids
straining devices, improper venting, and odors generated elsewhere in the plumbing system. These odors
are usually prevented by good area ventilation, frequent uid inputs, good product maintenance practices,
and proper product installation. Additional pretreatment steps not performed by the Big Dipper automatic
grease interceptor, including aeration, chlorination, improved area ventilation, and additional maintenance
control, may be needed at some sites.
Big Dipper®Advanced Maintenance
Assistant Overview
1
1
2
2
3
3
4
4
A A
B B
C C
D D

THIS DRAWING CONTAINS PROPRIETARY AND PATENTED MATERIAL. THIS DRAWING MAY NOT BE REPRODUCED IN WHOLE OR PART WITHOUT
WRITTEN CONSENT FROM THERMACO, INC. POSSESSION OF THIS DRAWING DOES NOT CONSTITUTE THE RIGHT TO MANUFACTURE.
POSSESSION OF THIS DRAWING DOES CONSTITUTE AN IMPLIED NONDISCLOSURE AGREEMENT BETWEEN THERMACO, INC. AND THE HOLDER OF
THIS DRAWING. DO NOT DESTROY THIS DRAWING, IT IS THE SOLE PROPERTY OF THERMACO, INC. AND MUST BE RETURNED UPON REQUEST.
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
646 GREENSBORO STREET
PO BOX 2548, ASHEBORO, NC 27203
VOICE 336-629-4651 FAX [phone]
Decimals
.XX +/- .03
.XXX +/- .015
Unless otherwise specified
Dimensions are in inches
Tolerances
Angular
+/- 1°
CHECKED SIZE REV. NO. DWG NO.
PART NO.
C
SCALE RELEASE DATE SHEET OF
ENGINEERING
DRAWN DATE
THIRD ANGLE PRO JECTION

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 4
51K with Advanced Maintenance Assistant
Caring for Your Big Dipper®with
Advanced Maintenance Assistant
*CAUTION! DISCONNECT POWER TO UNIT BEFORE CLEANING
to prevent damage to the unit and personal injury
**NOTE:Beforeenergizingunitaftercleaning,lltankwithwater
to protect wipers and heater from damage
Caring for Your Big Dipper®Advanced Maintenance Assistant
Daily Care:
(A) Empty the clear plastic grease/oils collection container (located on the front of the unit) prior to its be-
coming 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 trans-
lucent characteristic of the collector. Contents may be disposed of in rendering barrel with permission of
rendering company or as solid food waste. To dispose in this manner, empty grease into plastic bucket lined
with trash bag and allow contents to solidify at room temperature or in cooler before diposal into garbage.
Please consult with local authorities before disposing of grease in this manner.
WeeklyCare:
(A) Check the collection trough and the wiper blades for any solids build-up. Wipe off any accumulated deposits
and assure that the wiper blade assembly is replaced properly.
(B) Press the Skim Start/Stop button (on the bottom-right of the user interface) to ensure that the motor and
skimming wheel are still operating correctly. Press again to stop test. This will not affect the normal run-time
of the unit.
(C) Remove & spray down the basket lter to remove accumulated solids. Be sure to spray down both the
inside and outside surfaces of the basket lter.
(D) Check the thickness of the grease layer at the top of the unit. There should be no appreciable amount of
grease or oil left in the tank immediately after the daily automatic skimming cycle. If there is more than a 1/2”
(13 mm) thick layer of grease after the skimming cycle, this indicates a need to increase the skimming time.
Increase the digital control settings accordingly until a clean unit appearance is obtained after the automatic
skimming cycle. A simple guide is to change to the next higher setting and run for a period of time until enough
grease is being skimmed from the tank.
Quarterly Care:
(A) The internal basket lter in the unit is designed to remove incidental solids from kitchen drain ows. Over
a period of time, sediment consisting of very ne particles may begin to accumulate on the bottom of the unit.
If this build-up is allowed to continue, it may eventually block the outlet bafe. To prevent this from occurring,
remove the lid and stir the bottom of the unit with a long handled spatula while water is owing to ush out the
sediment. Occasionally drain and clean the unit thoroughly. Properly used, a wet-vac may be appropriate for
this purpose.

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 5
51K with Advanced Maintenance Assistant
SELECT
SKIM MODE
SKIM
START/STOP
Automatic Operation:
Skimming wheel operates every day for the time
indicated by setting below (may include more than one
skim during the day). Use Select Skim Mode to toggle
between skim settings. Skim Start/Stop button
begins/stops skim cycle.
For help with operation, visit big-dipper.com/operation
or call 800-633-4204.
I - Skim 15 min. per day
2 - Skim 30 min. per day
3 - Skim 45 min. per day
4 - Skim 60 min. per day
5 - Skim 120 min. per day
Information regarding additional settings and
LED functionality available in product manual.
TimedSkimmingDefault
Using the “User Interface” ve levels of skimming may be
selected in the “default” mode using the ‘Select Skim Mode’
button. By selecting one of the skim settings – 1, 2, 3, 4, or 5
- the skimming time per day (indicated to the right of the light)
is activated. The LED associated with the selected button is
illuminated continuously as an indicator of the selected skim
cycle and as a “power on” indicator. If the skimming level is
changed during an active skimming cycle, the next active skim
cycle will be at the new setting (The LED associated with the
newly selected level will change immediately). If the skimming
cycle is changed between active skimming cycles the next
skim cycle will be at the new level.
The skim cycle will occur at the same time each day. This is
determined by the time at which power is applied to the unit.
In the case of setting 5, the unit will skim for 60 minutes every
12 hours. To choose a new skim time, disengage power to the
unit and reapply power at the time when skim cycle is desired.
All skim cycles will last no more than 60 minutes at one time.
In the case of setting 5 in default mode or settings in extreme
mode, the electrical assembly will run more than one 60 minute
cycle per day.
Motor Exercising
For all selected skimming levels with system delays greater than
12 hours the skimmer motor will be energized for 5 seconds
every 12 hours. Only the motor will be energized (no heater
operation) at these exercising times.
SkimStart/StopButtonOperation
Any time the start button is depressed operation begins for
the selected skim level. Pressing this button does not effect
the normal timing of the unit. Pressing this button again will
stop the current skim.
Heater Operation
By default, the heater activates 60 minutes prior to a scheduled skim cycle. The heater will operate under thermistor
control with settings of 130°F heater off point, 120°F heater on point for the duration of the preheat and skim cycle.
Extreme Modes
Two (2) additional run-times are accessible which allow the unit to operate more frequently.
• 2+5 - When lights 2 and 5 are both illuminated, the unit will skim for 60 minutes every 6 hours
• 3+5 - When lights 3 and 5 are both illuminated, the unit will skim for 60 minutes every 4 hours
SelectingDefaultorExtremeskimming
To toggle between the two skimming levels remove power from the Big Dipper® either by unplugging the unit or
lifting the center module to open the interlock switch. Reapply power while holding the Select Skim Mode button
depressed. The number of LEDs illuminated will be the skim level indicator – 1 LED for the default modes and
two for the extreme modes. When toggled from extreme to default mode, level 3 will be initially selected.
Big Dipper®with Advanced Maintenance
Assistant Digital Control Operation

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 6
51K with Advanced Maintenance Assistant
Efuent Flow
Inlet
Solids Trapped in
Basket Filter
Assembly
Greasy Efuent
Rises Through
Basket Filter
Solids Ejected to
Outlet Flow
Heating Element
Skimming Wheel
Clean Water Flow
Through Outlet
Bafe
Clean Water
Flow From
Outlet
Advanced Maintenance Assistant Operation
Big Dipper models with Advanced Maintenance Assistant function to ush 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 oating fats, oils, and grease. The Advanced Maintenance Assistant feature includes a Basket Filter
Assembly, which separates out solids, and an impeller motor which periodically ushes the contents of the strainer.
W-250 with Advanced Maintenance Assistant
The Basket Filter separates incidental solids allowing larger solids to settle in the Basket Filter Assembly and grease
efuent to ow into the main tank. Every 24 hours (beginning with initial power application), the impeller motor runs,
ushing the incidental solids from the system. The incidental solids removal frequency is reset by disconnecting
and reconnecting power to the unit.
W-750 and W-1000 with Advanced Maintenance Assistant
The Basket Filter Assembly separates incidental solids allowing larger solids to settle in the Basket Filter Assem-
bly and grease efuent to ow into the main tank. The Advanced Maintenance Assistant in the W-750 and W-1000
uses two Basket Filters. Every 24 hours (beginning with initial power application), the impeller motor runs, ush-
ing the incidental solids from the system. The incidental solids removal frequency is reset by disconnecting and
reconnecting power to the unit.
Connecting the Impeller Motor
The Advanced Maintenance Assistant module ships from factory disconnected from the Center Lid Assembly
(CLA) center module. After reversing the center module to reverse the direction of Big Dipper (optional), the
Advanced Maintenance Assistant module must be connected to the CLA to receive power. Connect the Advanced
Maintenance Assistant motor cable to the motor plug in the back of the CLA above the power cable.
Big Dipper®with Advanced Maintenance
Assistant Operation

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 7
51K with Advanced Maintenance Assistant
Big Dipper®with Advanced Maintenance
Assistant Troubleshooting
BigDipperunitoverows
(1) Check to see that the outlet pipe is not reduced to a
smaller size, the outlet piping is vented, has as few 90
degree outlet turns as possible, and that no “P” trap is
installed on the outlet. Re-plumb the piping, if neces-
sary. Check outlet piping for clogs. Have a plumber
clean the line, if necessary.
(2) Make sure that the solids collection chamber is free of
excessive debris. To check the Centrifugal Pump opera-
tion, unplug the unit for 10 seconds, then re-energize.
The Centrifugal pump should automatically activate.
(3) Check the bottom of the grease chamber for exces-
sive solids and silt buildup which may be blocking the
outlet bafe. Disconnect the power and use a long
handled spatula or similar instrument to stir the bottom
while water ows through the unit. If necessary, drain
and clean the sediment from the unit. To prevent recur-
rence, schedule this cleaning to be done on a regular
basis (properly used, a wet vac may be appropriate for
cleaning sediment from the bottom of the unit).
(4) Make sure the ow rate to the unit does not exceed
the maximum ow rate, which is shown on the nameplate.
If necessary, have a plumber install an approved ow
control to restrict the inlet ow to the specied level or
install a properly sized Big Dipper for the application.
Excessive water observed in the grease collection
container
(1) Check Digital Control for excessive run time. Unit
will pick up incidental water after all grease is removed.
If necessary, reduce the digital control setting (i.e. 3 to
2) until no water is observed in the grease collection
container.
(2) Make certain that the water ow rate to the unit does
not exceed the rated ow and there are no drain line
clogs downstream from the unit.
No grease is collected in the container
(1) Check to be sure the power is on and the correct
setting is chosen. One of the setting buttons should be
illuminated. If none of the setting buttons are illuminated,
the unit is not powered.
(2) Lift the sump cover and clean away any buildup
that may be present on the wiper blades or collection
trough. Make sure the wiper blade(s) are properly in
place on the skimmer wheel(s). Replace wiper blades
when worn or warped.
(3) Press the Skim Start/Stop Button on the bottom of the
user interface to ensure that the skimming wheel turns.
CAUTION: Keep your hands away from moving parts
to avoid possible injury. If the skimmer motor does not
come on, the motor assembly may need to be replaced.
(4) Check for congealed grease in the unit. If the Big
Dipper’s heating element is not warming the unit, the
heating element may need to be replaced.
(5) Some sites do not generate enough grease to be
captured by the skimming process. Set Control for mini-
mum operation - Setting 1 for Light Skimming Operation.
Objectionable odor
(1) Clean the solids strainer and grease collection
container more frequently.
(2) Make sure grease/oil is being skimmed properly
from the unit.
(3) Check Digital Control for excessive run time. Unit
will pick up incidental water after all grease is removed.
If necessary, reduce the skim setting (i.e. 3 to 2) until
no water is observed in the grease collection container.
(4) If excessive sediment has collected on the bottom
of the unit, clean the unit as described in item 3 in “Big
Dipper unit overows.”
(5) Hydromechanical grease interceptors, grease traps,
automatic recovery units, grease removal devices and
other similar plumbing devices receiving kitchen ows
from sinks, oor drains, woks and other food bearing
sources may generate odors. While the Advanced Odor
Protection features of your Big Dipper are designed to
keep odors from escaping the lid, there may be other
factors inuencing odor evolution and dissemination.
These include room ventilation, kitchen menu, ambient
temperatures, ware washing practices, grease/oil input,
daily input uid volume, sanitizers, installation plumbing
design and product maintenance/upkeep. Odors are
usually prevented by good area ventilation, frequent
uid inputs, good product maintenance practices, and
proper product installation. Additional pretreatment
steps not performed by the Big Dipper automatic grease
interceptor, including aeration, chlorination, improved
area ventilation, and additional maintenance control,
may be needed at some sites.

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 8
51K with Advanced Maintenance Assistant
1
1
2
2
3
3
4
4
A A
B B
C C
D D

P.O. BOX 2548,
ASHEBORO, NC 27204
VOICE: 336-629-4651
FAX: [phone]
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
TOLERANCES
Decimals
.XX +/- .03
.XXX +/- .015
Angular
+/- 1°
All dimensions in inches
unless stated otherwise
PART NO.
W-257 AST Diagram Version
DRAWN
Zachary Rubeor
DATE
4/3/2019
REV. SIZE
C
SCALE
1:4
SHEET
1 OF 4
3RD ANGLE PROJECTION
1
1
2
2
3
3
4
4
A A
B B
C C
D D

P.O. BOX 2548,
ASHEBORO, NC 27204
VOICE: 336-629-4651
FAX: [phone]
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
TOLERANCES
Decimals
.XX +/- .03
.XXX +/- .015
Angular
+/- 1°
All dimensions in inches
unless stated otherwise
PART NO.
W-257 AST Diagram Version
DRAWN
Zachary Rubeor
DATE
4/3/2019
REV. SIZE
C
SCALE
1:4
SHEET
1 OF 4
3RD ANGLE PROJECTION
1
1
2
2
3
3
4
4
A A
B B
C C
D D

P.O. BOX 2548,
ASHEBORO, NC 27204
VOICE: 336-629-4651
FAX: [phone]
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
TOLERANCES
Decimals
.XX +/- .03
.XXX +/- .015
Angular
+/- 1°
All dimensions in inches
unless stated otherwise
PART NO.
W-257 AST Diagram Version
DRAWN
Zachary Rubeor
DATE
4/3/2019
REV. SIZE
C
SCALE
1:4
SHEET
1 OF 4
3RD ANGLE PROJECTION
1
1
2
2
3
3
4
4
A A
B B
C C
D D

P.O. BOX 2548,
ASHEBORO, NC 27204
VOICE: 336-629-4651
FAX: [phone]
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
TOLERANCES
Decimals
.XX +/- .03
.XXX +/- .015
Angular
+/- 1°
All dimensions in inches
unless stated otherwise
PART NO.
W-257 AST Diagram Version
DRAWN
Zachary Rubeor
DATE
4/3/2019
REV. SIZE
C
SCALE
1:4
SHEET
1 OF 4
3RD ANGLE PROJECTION
How To Reverse Big Dipper® with
Advanced Maintenance Assistant Operation
1) Unlatch the Unit lid. Pull the
side wing outward.
2) Lift the center module up off of
the unit, ensuring clearance for
the heater. It may be necessary to
remove the centrifugal pump to
remove center module.
3) Rotate the center module
180º.
4)Lowerthecentermoduleback
down on top of the unit. Move the
sidewingbackintoplace
& fasten all latches.
1) 2)
4)3)
Grease
Outlet
Power
Cord
Power
Cord
How To Reverse Big Dipper®Advanced Maintenance Assistant Operation
Clearance Required
To Remove Lid
*ALWAYS UNPLUG UNIT BEFORE REMOVING LID
**SYSTEM WILL NOT OPERATE UNLESS CENTER MODULE IS IN PLACE
14”
*Note: W-250 and W-750 units with Advanced
Maintenance Assistant have one (1) Advanced Mainte-
nance Assist module. The W-1000 has two (2) modules.
Motor
Plug
Motor
Plug

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 9
51K with Advanced Maintenance Assistant
Big Dipper®with Advanced Maintenance
Assistant Plumbing Installation
Locating the Unit
To minimize grease build-up in piping, a Big Dip-
per system should be located as close as possible
to the xture it is serving. The system should be
visible and easily accessible for maintenance and
inspection. The unit must be in a level position.
Be sure to check the Specication Sheet for
your model for the exact clearances needed for
installation. If the system is located directly on
the oor, the bottom should be sealed to the oor
with an approved silicone type sealant. Make sure
the height above the basket lter access cover is
enough to remove the basket lter.
Inlet/OutletPiping
The inlet and outlet piping connections require ex-
ible sleeve pipe couplings. The Centrifugal Pump
must be connected to the inlet piping. Keep outlet
piping as straight as possible. Use only “sweep”
connections. Do not reduce the pipe sizing on
the outlet piping. Do not install “P” trap on outlet
connection of system. (Note: The system already
has a internal gas trap). Failure to install to these
instructions voids Thermaco’s Warranty.
Flow Controls
Big Dipper Systems are tested and rated with an
external ow control. We caution against any instal-
lation that does not use an external ow control.
Each Big Dipper comes with the recommended ow
control device.
Fill Unit With Water Before Powering
Big Dipper systems, equipped with an electric
heatingelement,MUSTbelledwithwaterbefore
energizing the power to the system. Failure to do
so may damage the electric heating element. These
elements will NOT be replaced under Thermaco’s
Warranty.
Venting the Outlet
An outlet vent or approved vacuum breaker of at
least 1/2 the diameter of the system’s outlet con-
nection must be present as close as possible to
the Big Dipper outlet to prevent possible siphonage
problems. Failure to provide a vent for the system
voids Thermaco’s Warranty for the system.
For High Head Height Applications
Over Six (6) Feet (1.95 m)
Big Dipper systems are equipped with a molded
ow control located at the inlet end of the system.
Verify its location and placement prior to connect-
ing the inlet piping. If your code requires a vertical
type ow regulator, an approved control with a ow
rating matching the system’s ow rate should be
used. Note: When a Big Dipper is servicing multiple
xtures, some codes require separate ow controls
for each xture. See following page for suggested
high head height ow regulation installation.
Do Not Use With Food Grinders, Potato
Peelers or Waste Disposal Units
If the system is connected to a Waste Disposal Unit,
Garbage Grinder or Potato Peeler, Thermaco’s War-
ranty will be void.
Fill Unit With Water and Disconnect
During Periods of Kitchen Inactivity
Big Dipper systems MUST be lled with water
and the power must be disconnected during any
inactivity lasting longer than two (2) weeks. Fail-
ure to do so may damage the unit. Thermaco’s
Warranty will be void if proper precaution is not
taken for extended periods of kitchen inactivity.
Note: Thermaco does not recom-
mend plumbing a dishwasher
through a Big Dipper.
Big Dipper®with Advanced Maintenance Assistant Plumbing Installation

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 10
51K with Advanced Maintenance Assistant
1
1
2
2
3
3
4
4
A A
B B
C C
D D

P.O. BOX 2548,
ASHEBORO, NC 27204
VOICE: 336-629-4651
FAX: [phone]
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
TOLERANCES
Decimals
.XX +/- .03
.XXX +/- .015
Angular
+/- 1°
All dimensions in inches
unless stated otherwise
PART NO.
Fas Vent - 257 AST
DRAWN
Zachary Rubeor
DATE
4/3/2019
REV. SIZE
C
SCALE
1:4
SHEET
3 OF 4
3RD ANGLE PROJECTION
1
1
2
2
3
3
4
4
A A
B B
C C
D D

P.O. BOX 2548,
ASHEBORO, NC 27204
VOICE: 336-629-4651
FAX: [phone]
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
TOLERANCES
Decimals
.XX +/- .03
.XXX +/- .015
Angular
+/- 1°
All dimensions in inches
unless stated otherwise
PART NO.
No Fas Vent - 257 AST
DRAWN
Zachary Rubeor
DATE
4/3/2019
REV. SIZE
C
SCALE
1:4
SHEET
2 OF 4
3RD ANGLE PROJECTION
Big Dipper®with Advanced Maintenance
Assistant Plumbing Installation
The following drawings show proposed venting for Big Dipper units in various situations. Flow control device
should be installed. Checkstateorlocalplumbingcodetodetermineproperinstallationforyourfacility.
Sites without Upstream Facility Vents or Other Air Relief
Installations without Upstream Facility Vents or other Air Relief require the use of the vessel vent (also referred to
as a chamber vent) to prevent air bound conditions. Thermaco provides a 1” NPT connection by which this vessel
vent may be connected from the unit to atmosphere (preferred) or the facility vent.
Sites with Upstream Facility Vents
Sites using facility vents upstream of the Big Dipper unit do not require the use of a vessel vent. In this case, the
open inlet design of the unit works in conjunction with the facility vent to facilitate air movement into and out of the
interior grease interceptor air space and prevents air bound conditions from occurring. An upstream P-Trap (not
shown) is only required in certain districts, and is not recommended by Big Dipper.
INCOMING FLOW
FACILITY
VENT
FACILITY
VENT
OUTGOING FLOW
INCOMING FLOW
OUTGOING FLOW
VESSEL VENT
FACILITY
VENT
TIE-IN
NOTE: Drawing for reference only. Equipment must be installed in compliance with all applicable laws,
regulationsandcodes,includingplumbingcodes.Installationshouldbeperformedbyaqualiedplumber.

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 11
51K with Advanced Maintenance Assistant
1
1
2
2
3
3
4
4
A A
B B
C C
D D

P.O. BOX 2548,
ASHEBORO, NC 27204
VOICE: 336-629-4651
FAX: [phone]
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
TOLERANCES
Decimals
.XX +/- .03
.XXX +/- .015
Angular
+/- 1°
All dimensions in inches
unless stated otherwise
PART NO.
vfca W-750-AST
DRAWN
Zachary Rubeor
DATE
4/3/2019
REV. SIZE
C
SCALE
1:12
SHEET
4 OF 4
3RD ANGLE PROJECTION
NOTE: Drawing for reference only. Equipment must be installed in compliance with all applicable laws,
regulationsandcodes,includingplumbingcodes.Installationshouldbeperformedbyaqualiedplumber.
Drainage Piping
from Kitchen
VFCA-25 Vented Flow Control for W-250-AST
VFCA-75 Vented Flow Control for W-750-AST
VFCA-100 Vented Flow Control for W-1000-AST
Big Dipper®with Advanced Maintenance
Assistant Plumbing Installation
Outlet Vent
(Note: Vent may be atmosphere
vent, facility vent connection or code-
approved air admittance valve)
* Installation in high head height
locations requires removal of the
Molded Flow Control (small rub-
ber cap under no-hub coupling
over the Inlet).
Sometimes space restrictions require the installation of Big Dipper units in basement locations where signicant
head pressure becomes a factor. The Big Dipper®VFCA Vented Flow Control module provides an option for
use with installations where a signicant amount of head pressure is present (greater than 6 ft./1.95 m) or where
applicable regulations require vented ow controls. A Vented Flow Control helps reduce problems associated with
high head pressure and helps slow the drainwater ow down. The VFCA kit contains an appropriate tting and
ow control orice. An appropriate high head pressure Vented Flow Control is provided with W-750 and W-1000
models with the Advanced Maintenance Assist feature. If a high head pressure Vented Flow Control is required for
W-250 with Advanced Maintenance Assist, please purchase VFCA-25 from Big Dipper. Multiply Big Dipper siz-
ing calculations by 1.5 when using a VFCA.
FlowControlVent/AirIntake
(Note: Flow Control Vent may be connected
to atmosphere vent or code-approved air
admittance valve. To be installed above sink
ood rim.)
Vessel/TankVent
(Note: Vent may be to atmosphere
or facility vent. Do not connect to air
admittance valve.)

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 12
51K with Advanced Maintenance Assistant
FLOW CONTROL VENT
MAY BE CONNECTED TO
ATMOSPHERE VENT OR
CODE-APPROVED AIR
ADMITTANCE VALVE.*
TO BE INSTALLED
ABOVE SINK FLOOD
RIM.
*Air Admittance Valves are not
permitted in some locations. Check
local plumbing code to determine
if they are permitted by state or
local plumbing code.
VFCA Vented Flow Control
Installation Instructions
IMPORTANT!
Theowcontrolshouldbeinstalledafterthelastxtureascloseaspossibletothe
undersideofthelowestxture.Iftheowcontrolisinstalledmorethan2feet
belowthelowestxtureconsultthemanufacturerforamorerestrictivedisc.
Removethemoldedow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.
Installationshouldonlybeperformedbyaqualiedplumber.

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 13
51K with Advanced Maintenance Assistant
1
1
2
2
3
3
4
4
A A
B B
C C
D D

THIS DRAWING CONTAINS PROPRIETARY AND PATENTED MATERIAL. THIS DRAWING MAY NOT BE REPRODUCED IN WHOLE OR PART WITHOUT
WRITTEN CONSENT FROM THERMACO, INC. POSSESSION OF THIS DRAWING DOES NOT CONSTITUTE THE RIGHT TO MANUFACTURE.
POSSESSION OF THIS DRAWING DOES CONSTITUTE AN IMPLIED NONDISCLOSURE AGREEMENT BETWEEN THERMACO, INC. AND THE HOLDER OF
THIS DRAWING. DO NOT DESTROY THIS DRAWING, IT IS THE SOLE PROPERTY OF THERMACO, INC. AND MUST BE RETURNED UPON REQUEST.
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
646 GREENSBORO STREET
PO BOX 2548, ASHEBORO, NC 27203
VOICE 336-629-4651 FAX [phone]
Decimals
.XX +/- .03
.XXX +/- .015
Unless otherwise specified
Dimensions are in inches
Tolerances
Angular
+/- 1°
CHECKED SIZE REV. NO. DWG NO.
PART NO.
C
SCALE RELEASE DATE SHEET OF
ENGINEERING
DRAWN DATE
THIRD ANGLE PROJECTION
Big Dipper®with Advanced Maintenance
Assistant Electrical Installation
Big Dipper®with Advanced Maintenance Assistant Electrical Installation
Electrical
Panel
(NOT
SUPPLIED)
Duplex Outlet
(NOT
SUPPLIED)
The Big Dipper W-250 & W-750 models with Advanced Maintenance Assistant are equipped with one (1) Push Button
Digital Time Controller while the W-1000 with Advanced Maintenance Assistant is equipped with two (2) Push Button
Digital Time Controllers. The push button control is located on top of the lid of the Big Dipper next to the skimming
wheel (See Digital Timer Operation Instructions pg 5). The Big Dipper should only be plugged into a properly
grounded 3-prong 120 VAC or 230 VAC outlet. If possible, the power supply outlet for the Big Dipper should be
connected to an electrical circuit controlled by a ground fault circuit breaker.
One of the setting buttons should be illuminated to show the unit is powered. If none of the setting buttons are
illuminated, the unit is not powered.
This Big Dipper unit is shipped from the Factory wired for Preheat Operation. This means the Heater will come on
1 hour prior to scheduled skim and heat the water to 130ºF ±5 and maintain this temperature range for the duration
of the skim cycle. Continuous Heater Operation is where the Heater is active at all times. To switch to alternative
heating programming, please contact a Thermaco representative for further instructions.
Electrical Junction
Box (Back of Unit)
*W-1000-AST Only
Note:
Digital Control Supplied with
system.
Drawing for reference only.
Equipment must be installed
in compliance with all appli-
cable laws, regulations and
codes, including electrical
codes. Installation should
beperformedbyaqualied
electrician.
115VAC Circuit,
Ground Fault Circuit Breaker
(NOT SUPPLIED)
*For 230 VAC Units
use 230 VAC Circuit
Big Dipper Electrical Requirements
115VAC Models:
W-250-AST: 12.2 Amps @ 115VAC
50/60Hz (1400 Watts)
W-750-AST: 12.2 Amps @ 115VAC
50/60Hz (1400 Watts)
230VAC Models:
W-250-E-AST: 6.1 Amps @ 230VAC
50/60Hz (1400 Watts)
W-750-E-AST: 6.1 Amps @ 230VAC
50/60Hz (1400 Watts)
W-1000-AST: 11.2 Amps @ 230 VAC
50/60Hz (2570 Watts)
Note: The Big Dipper unit will not operate when the lid is removed.

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 14
51K with Advanced Maintenance Assistant
Big Dipper®IS
Safety & Grounding Instructions
Important Safety Instructions
This appliance must be grounded. In the event of malfunction or breakdown, grounding provides
a path of least resistance for electric current to reduce the risk of electric shock. This appliance is
equipped with a cord having an equipment-grounding conductor and a grounding plug. The plug
must be plugged into an appropriate outlet that is properly installed and grounded in accordance
with all local codes and ordinances.
DANGER- Improper connection of the equipment-grounding conductor can result in a risk of
electric shock. The conductor with insulation having an outer surface that is green with or without
yellow stripes is the equipment-grounding conductor. If repair or replacement of the cord or plug
is necessary, do not connect the equipment-grounding conductor to a live terminal. Check with a
qualied electrician or serviceman if the grounding instructions are not completely understood, or
if in doubt as to whether the appliance is properly grounded. Do not modify the plug provided with
the appliance - if it will not t the outlet, have a proper outlet installed by a qualied electrician.
WARNING
When using electric appliances, basic precautions should always be followed,
including the following:
a) Read all instructions before using the appliance.
b) Do not contact moving parts.
c) Only use attachments recommended or sold by the manufacturer.
d) Do not use outdoors.
e) Do no unplug by pulling on cord. To unplug, grasp the plug, not the cord.
f) Unplug from outlet when not in use and before servicing or cleaning.
g) Connect to a properly grounded outlet only. See Grounding Instructions.
Save These Instructions
Grounding Instructions

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 15
51K with Advanced Maintenance Assistant
Big Dipper®IS
Grounding Instructions
Grounding Instructions
115 V Units
This appliance is for use on a nominal 115 V circuit, and has a grounding plug that looks like the
plug illustrated in drawing A below. A temporary adapter, which looks like the adapter illustrated
in drawing B and C, may be used to connect this plug to a 2-pole receptacle as shown in sketch
B if properly grounded outlet is not available. The temporary adapter should be used only until a
properly grounded outlet can be installed by a qualied electrician. The green colored rigid ear,
lug, and the like, extending from the adapter must be connected to a permanent ground such as
a properly grounded outlet box cover. Whenever the adapter is used, it must be held in place by
the metal screw.
230 V Units
This appliance is for use on a circuit having a nominal rating more than 120 V and is factory
equipped with a specic electric cord and plug. No adapter should be used with this appliance.
If the appliance must be reconnected for use on a different type of electric circuit, the recon-
nection should be made by qualied service personnel; and after the reconnection, the appli-
ance should comply with all local codes and ordinances.

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 16
51K with Advanced Maintenance Assistant
Big Dipper®with Advanced Maintenance
Assistant Wiring Diagram
NOTE:
220-240V Units (International Units) have the
following wire color changes:
On the POWER SUPPLY CORD:
The Black Wire becomes Brown
The White Wire becomes Blue
The Green Wire becomes Yellow/Green
Wiring Diagram For
Center Module Advanced Maintenance
Assistant Control
J5
J6
J7
J1
FD2
580-3 Main Control Board
Thermistor
Black, 14AWG
White, 16AWG
White, 14AWG
Motor Heater
Black, 18AWG Green, 16AWG White, 18AWG
Keypad
J4
J5 for 115V N
J4 for 230V
AST Connector
Black, 16AWG
ADVANCED MAINTENANCE ADVANCED MAINTENANCE
ASSISTANT CONNECTORASSISTANT CONNECTOR

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 17
51K with Advanced Maintenance Assistant
Big Dipper®with Advanced Maintenance
Assistant Wiring Diagram: Centrifugal Pump
1
1
2
2
3
3
4
4
A A
B B
THERMACO, INC
THIS DRAWING CONTAINS PROPRIETARY AND PATENTED MATERIAL. THIS DRAWING MAY NOT BE REPRODUCED IN WHOLE OR PART WITHOUT
WRITTEN CONSENT FROM THERMACO, INC. POSSESSION OF THIS DRAWING DOES NOT CONSTITUTE THE RIGHT TO MANUFACTURE.
POSSESSION OF THIS DRAWING DOES CONSTITUTE AN IMPLIED NONDISCLOSURE AGREEMENT BETWEEN THERMACO, INC. AND THE HOLDER OF
THIS DRAWING. DO NOT DESTROY THIS DRAWING, IT IS THE SOLE PROPERTY OF THERMACO, INC. AND MUST BE RETURNED UPON REQUEST.
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
646 GREENSBORO STREET
PO BOX 2548, ASHEBORO, NC 27203
VOICE 336-629-4651 FAX [phone]
Decimals
.XX +/- .03
.XXX +/- .015
Unless otherwise specified
Dimensions are in inches
Tolerances
Angular
+/- 1°
CHECKED SIZE REV. NO. DWG NO.
PART NO.
SCALE RELEASE DATE SHEET OF
ENGINEERING
DRAWN DATE
THIRD ANGLE PROJECTION
B
WIRING DIAGRAM AST
MOTOR BIG DIPPER
W SERIES S/N 51000 AND ABOVE
0
WD-AST-51K-MOTOR
01/21/19 1 1
NTS
B. KYLES 09/14/16
REVISION HISTORY
ZONE REV DESCRIPTION DATE APPROVED
AST MODULE
CONNECTOR
GREEN
RING TERMINALS TO
GROUND STUD
ON TANK COVER
CONNECTOR
CABLE
BLACK
WHITE
MOTOR
CAPACITOR
NOTE: VARIOUS OTHER WIRES ARE ATTACHED TO
THE MOTOR FOR INTERNAL FUNCTIONS. ALWAYS
CONNECT THE WIRING FOR CLOCKWISE ROTATION.
FOLLOW DIRECTIONS PRINTED ON MOTOR FACE.
Wiring Diagram For Advanced Maintenance
Assistant Centrifugal Pump
NOTE:
VARIOUS OTHER WIRES ARE ATTACHED TO THE
MOTOR FOR INTERNAL FUNCTIONS.
ALWAYS CONNECT THE WIRING FOR CLOCKWISE
ROTATION
FOLLOW DIRECTIONS PRINTED ON MOTOR FACE.
ADVANCEDADVANCED
MAINTENANCEMAINTENANCE
ASSISTANT ASSISTANT
CONNECTORCONNECTOR

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 18
51K with Advanced Maintenance Assistant
Big Dipper®with Advanced Maintenance
Assistant Wiring Diagram
Junction Box Wiring Diagram For Big Dipper
W-1000 with Advanced Maintenance Assistant
* Receptacles may differ depending
on specic electrical congurations
needed.

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 19
51K with Advanced Maintenance Assistant
1
1
2
2
3
3
4
4
A A
B B
C C
D D

THIS DRAWING CONTAINS PROPRIETARY AND PATENTED MATERIAL. THIS DRAWING MAY NOT BE REPRODUCED IN WHOLE OR PART WITHOUT
WRITTEN CONSENT FROM THERMACO, INC. POSSESSION OF THIS DRAWING DOES NOT CONSTITUTE THE RIGHT TO MANUFACTURE.
POSSESSION OF THIS DRAWING DOES CONSTITUTE AN IMPLIED NONDISCLOSURE AGREEMENT BETWEEN THERMACO, INC. AND THE HOLDER OF
THIS DRAWING. DO NOT DESTROY THIS DRAWING, IT IS THE SOLE PROPERTY OF THERMACO, INC. AND MUST BE RETURNED UPON REQUEST.
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
646 GREENSBORO STREET
PO BOX 2548, ASHEBORO, NC 27203
VOICE 336-629-4651 FAX [phone] Decimals
.XX +/- .03
.XXX +/- .015
Unless otherwise specified
Dimensions are in inches
Tolerances
Angular
+/- 1°
CHECKED SIZE REV. NO. DWG NO.
PART NO. C
SCALE RELEASE DATE SHEET OF
ENGINEERING
DRAWN DATE
THIRD AN GLE PRO JECTION
Big Dipper®with Advanced Maintenance
Assistant Electrical Components
*230 VAC Units use M-58-230
and H-12-230
DETAIL A
SCALE 1 : 1
A
1
1
2
2
3
3
4
4
A A
B B
C C
D D

THIS DRAWING CONTAINS PROPRIETARY AND PATENTED MATERIAL. THIS DRAWING MAY NOT BE REPRODUCED IN WHOLE OR PART WITHOUT
WRITTEN CONSENT FROM THERMACO, INC. POSSESSION OF THIS DRAWING DOES NOT CONSTITUTE THE RIGHT TO MANUFACTURE.
POSSESSION OF THIS DRAWING DOES CONSTITUTE AN IMPLIED NONDISCLOSURE AGREEMENT BETWEEN THERMACO, INC. AND THE HOLDER OF
THIS DRAWING. DO NOT DESTROY THIS DRAWING, IT IS THE SOLE PROPERTY OF THERMACO, INC. AND MUST BE RETURNED UPON REQUEST.
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
646 GREENSBORO STREET
PO BOX 2548, ASHEBORO, NC 27203
VOICE 336-629-4651 FAX [phone] Decimals
.XX +/- .03
.XXX +/- .015
Unless otherwise specified
Dimensions are in inches
Tolerances
Angular
+/- 1°
CHECKED SIZE REV. NO. DWG NO.
PART NO. C
SCALE RELEASE DATE SHEET OF
ENGINEERING
DRAWN DATE
THIRD ANGLE PROJ ECTION
Printed Circuit Board
PCB-3
Motor
M-58*
Heater
H-12*
Safety Switch
MSS-9
Rear Plate
RP-1
Magnet for Complete
Lid Assembly
MLEM-2
Thermistor
Part# PCRAT-3
Thermistor Clamp Assembly (not
pictured)
Part# 51K-TMBKT-1
Adapter Board
(not pictured)
PCCAB-3
Ribbon Cable,
connects Printed Circuit Board
to Adapter Board
PCRC-3

©2020 Thermaco, Incorporated All rights reserved • Patented/Patents Pending • Specications subject to change without notice
646 Greensboro St. • Asheboro, N. C. 27204-2548 • Phone [phone] MNL-AST51000 20
51K with Advanced Maintenance Assistant
Big Dipper®with Advanced Maintenance
AssistantComponentIdentication
1
1
2
2
3
3
4
4
A A
B B
C C
D D

THIS DRAWING CONTAINS PROPRIETARY AND PATENTED MATERIAL. THIS DRAWING MAY NOT BE REPRODUCED IN WHOLE OR PART WITHOUT
WRITTEN CONSENT FROM THERMACO, INC. POSSESSION OF THIS DRAWING DOES NOT CONSTITUTE THE RIGHT TO MANUFACTURE.
POSSESSION OF THIS DRAWING DOES CONSTITUTE AN IMPLIED NONDISCLOSURE AGREEMENT BETWEEN THERMACO, INC. AND THE HOLDER OF
THIS DRAWING. DO NOT DESTROY THIS DRAWING, IT IS THE SOLE PROPERTY OF THERMACO, INC. AND MUST BE RETURNED UPON REQUEST.
MATERIAL (UNLESS NOTED)
FINISH (UNLESS NOTED)
646 GREENSBORO STREET
PO BOX 2548, ASHEBORO, NC 27203
VOICE 336-629-4651 FAX [phone] Decimals
.XX +/- .03
.XXX +/- .015
Unless otherwise specified
Dimensions are in inches
Tolerances
Angular
+/- 1°
CHECKED SIZE REV. NO. DWG NO.
PART NO. C
SCALE RELEASE DATE SHEET OF
ENGINEERING
DRAWN DATE
THIRD AN GLE PRO JECTION
Electrical Enclosure Cover
(Includes User Interface
and Flip Door)
EECA-115*
Wheel Wiper
Assembly
WWA-5
Magnet for Com-
plete Lid Assembly
MLEM-2
Heater
H-12*
*230 VAC Units use M-58-230,
H-12-230, and EECA-230
Adapter Board (not pictured)
PCCAB-3