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         ACCU-MAX+ SERIES 

 

Marshall Excelsior Company 

 

   Base Engineering 

1506 George Brown Drive Marshall, MI 49068 

 

      600 Rothesay Ave, Saint John, NB E2H 2H1, Canada 

Phone (269) 789-6700   Fax (269) 781-8340                                                                                                         Phone (506) 635-2280  Fax (506) 635-2281 

www.marshallexcelsior.com

                                                                                                                                                                                

www.baseng.com

 

 

The contents of this publication are for informational purposes only.  While every effort has been made to ensure accuracy, these contents are not to be construed as warranties or 

guarantees, expressed or implied, regarding the products or services described herein or for their use or applicability.  Marshall Excelsior Co. and BASE Engineering reserve the right to 

modify or improve the designs or specifications of such products at any time without notice.  The MEC™/BASE™ logo is the trademark of Marshall Excelsior Co. and BASE Engineering. 

 

FORM #1173 

 

 

 

 

 

                                                          REV B 7/13/2021 

 

Installation Information 

 

1

 

Before you Begin & Qualified Installer Requirements 

 
BEFORE YOU BEGIN 

       

 

 

Carefully

  read this Installation Guide before installing this 

product. If anything is unclear, please contact 

BASE 

Engineering for support. 

 

 

Ensure that the 

NEGATIVE

 battery connection is disconnected 

before beginning work. 

 

NOTE:

 Some components may lose short-term memory (i.e. engine or 

transmission adaptive parameters and radio presets) after a prolonged time without battery power. 

 

 

Accu-Max+ should be serviced by qualified, trained personnel only. Attempting to remove the 

cover or disassemble the device could expose you to dangerous high voltage points. 

 

 

Do not attempt to install or operate a damaged device. If the unit has been exposed to excessive 

amounts of water, shows evidence of physical damage, or is not operating properly, unplug it 

from the power source and contact qualified service personnel. 

 

 

Use of thread-locking compounds, such as Loctite, may cause serious damage to plastic 

enclosures. Many thread-locking compounds are not compatible with thermoplastics and can lead 

to stress-cracking. 

Summary of Contents for Accu-Max+ Series

Page 1: ...e you Begin Qualified Installer Requirements BEFORE YOU BEGIN Carefully read this Installation Guide before installing this product If anything is unclear please contact BASE Engineering for support E...

Page 2: ...iring does not chafe and a seal is maintained between compartments Appropriate industry standard fasteners splices connectors and ties are used for the vehicle environment Appropriate slack is in plac...

Page 3: ...he installer must be equipped with the correct tools for performing each installation operation The customer must ensure that the installation of all equipment provided for this project is safe used f...

Page 4: ...ng key components 1 Digital Dial 2 Barrier 3 Harness 4 Optional Brake Pressure Switch Figure 2 1 Accu Max System Drawing Not to Scale Black GND Red 12 24VDC To PC3 Receiver or OBC To Battery through a...

Page 5: ...ed The estimated volume field may be enabled without the tilt compensation if the float dimensions are not provided Figure 3 1 Typical Installation Locations of Digital Dial Barrier is mounted inside...

Page 6: ...SE Receiver Module is connected to Barrier to communicate to a PC3 Receiver or an OBC connect serial port to compatible RS485 port Activity LED blinks in Blue color when the system has normal communic...

Page 7: ...onal Specification Power Supply 12V 24V Absolute Range 9V 32V Nighttime Backlit Current Draw 90mA 12V External Fuse Rating 2A Communication Link MODBUS over RS485 at 9600 Baud Operating Temperature Ra...

Page 8: ...1173 8 REV B 7 13 2021 6 Mechanical Specification 5 22 4 625 4 02 4 65 2 95 4 73 0 315 Length variable Length 15 Length 15 Length 3 Black Red Gray Connector Black Connector COM N O 3 8 NPT 0 827 1 968...

Page 9: ...ons float arm measurements and precise location of the dial Much of the required information is available on the Tank Plate i e tank radius diameter length and shape and several typical preset locatio...

Page 10: ...Thickness inches Generally stamped on the tank plate Tank Head Shape Hemisphere Elliptic Generally stamped on the tank plate Mounting Point Proud Recess inches See Figure 7 1 Flange to Pivot Length in...

Page 11: ...t being received verify the connection between the Barrier and Digital Dial Activity LED blinks Red without any Blue o This condition indicates that the PC3 or OBC is sending data on the RS485 line ho...

Page 12: ...1 Digital Dial UL Markings and Standards UL Marking UL cUL Class I Zone 1 AEx ib IIB T4 Gb Ex ib IIB T4 Gb Temperature Range 40 C to 50 C Applicable Standards UL 60079 0 Seventh Edition UL 60079 11 Si...

Page 13: ...o shown on any associated apparatus used The same applies for inductance Lcable Li and La or Lo respectively Where the cable capacitance and inductance per foot are not known the following values shal...

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