ACR Electronics HRU-100 User Manual

INSTALLATION PROCEDURES

HydroFix™//
Hydrostatic Release Unit (HRU)

Model No.: HRU-100
Product No.: 9490.1

Y1-06-0276, Rev. B

CAUTION: Before proceeding to install, test or use your new ACR

Electronics’ product, please read this Product Support Manual in its entirety.
If you have questions regarding the contents of the manual, please contact our

Technical Service Department at ACR Electronics, Inc., Telephone +1 (954)
981-3333. Please be ready to provide the technician with the page number you
wish to discuss. If you have a question that is not covered in the manual,
please visit our website and access the Frequently Asked Questions (FAQs)
section for further information or call our Technical Service Department. The
website address is www.acrelectronics.com. If in the future you lose this
manual, you may access and print a replacement on the ACR website.

Y1-06-0276B 1

Table of Contents

SECTION 1 – INTRODUCTION _________________________________ 3

SECTION 2 – PREPARING TO INSTALL ___________________________ 4

SECTION 3 – HOW TO DETERMINE HRU EXPIRATION DATE _________ 6

SECTION 4 – INSTALLING THE HRU IN A SeaShelter3™ BRACKET _____ 7

SECTION 5 – INSTALLING THE HRU IN A SeaShelter2™ BRACKET _____ 9

SECTION 6 – INSTALLING THE HRU IN A SeaShelter™ BRACKET _____ 11

APPENDIX A – WARRANTY, NOTICES __________________________ 13

PLEASE READ ALL WARNINGS, CAUTIONS AND NOTES

CAREFULLY

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SECTION 1 – INTRODUCTION

Congratulations and thank you for purchasing the ACR HydroFix™
Hydrostatic Release Unit (HRU) replacement for your ACR Category I
EPIRB.

ACR designs, manufactures and distributes quality products knowing
they are used to save lives. Many of our products are required to be
tested and approved by regulatory bodies worldwide. We believe in
going beyond those specifications to ensure our products work when
needed in real world conditions. With proper care and maintenance your
ACR product will last for years.

ACR is proud to be certified to ISO 9001: 2008, the International
Standard for Quality.

This manual provides installation instructions for the HydroFix™
Hydrostatic Release Unit (HRU), model HRU-100, in supported ACR
Cat I brackets only.

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Figure 1

SECTION 2 – PREPARING TO INSTALL

UNPACKING THE HydroFix™ HRU

The HydroFix™ HRU Kit is a universal kit in that it is used for Category I
ACR EPIRBs. The kit components that are required to replace the HRU
in a particular model will vary with the EPIRB bracket you are servicing.
The content of the universal HRU kit includes the following:

Figure 1 items:
A Category I bracket (SeaShelter™) release rod
B Keyed bracket adapter
C Replacement hydrostatic release unit (HRU)
D Cotter pin, large
E HRU expiration label

F Category I bracket (SeaShelter™

) release rod

3

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